- Novel phenazine fused triphenylene discotic liquid crystals: synthesis, characterisation, thermal, optical and nonlinear optical properties
-
A straightforward synthesis of novel phenazine fused triphenylene discotic liquid crystals (DLCs) is realized. The condensation of 3,4-diaminobenzoic acid with a triphenylene-1,2-diquinone intermediate gives an acid derivative which upon esterification with aliphatic alcohols produces the corresponding monomeric ester derivatives of the phenazine fused triphenylene discotic liquid crystals. The intermediate acid derivative exhibits a rectangular columnar phase along with a high isotropic phase transition temperature. However, the monomeric ester derivatives show a hexagonal columnar mesophase over a broad temperature range and stable when decreased to room temperature upon cooling from the isotropic phase. The mesomorphic properties of the acid and monomeric ester derivatives of the phenazine fused triphenylene DLCs were characterised by polarised optical microscopy (POM), differential scanning calorimetry (DSC) and X-ray diffraction studies (XRD). The molecular structures of the intermediate and final compounds were characterised by spectral and elemental analysis. The photophysical properties of all the monomeric ester compounds were investigated in an anhydrous chloroform solvent and absorption bands around 291-472 nm and the corresponding emission bands at 658-661 nm were observed, respectively. The π-extended conjugation in these materials gives rise to high nonlinear optical properties. These materials have immense potential for use in electro-optical applications.
- Gowda, Ashwathanarayana,Jacob, Litwin,Joy, Nithin,Philip, Reji,Kumar, Sandeep
-
-
Read Online
- Synthesis of novel regioisomeric phenanthro[a]phenazine derivatives through the SNAr strategy and their self-assembly into columnar phases
-
The cyclocondensation reaction of triphenylene-1,2-diquinone with 1,2-diamino-4-nitrobenzene results in two regioisomers, and is succeeded by a nucleophilic substitution reaction with alkyl mercaptans. The synthesis of unsymmetrically substituted phenazin
- Patra, Alakananda,Swamynathan,Kumar, Sandeep
-
-
Read Online
- Synthesis and QCM gas-sensing properties of 3,4-dialkoxyphenyl tosylamino-substituted phthalocyanines
-
Octa-substituted metallophthalocyanines [M = Ni(II), Zn(II), Co(II), and Cu(II)] carrying 3,4-dialkoxyphenyl tosylamino groups at the peripheral positions have been synthesized from 1,2-dicyano-4,5-bis[(3,4-dialkoxyphenyl-tosylamino)methyl]benzene in the
- Harbeck, Mika,Sen, Zafer,Erbahar, Dilek D.,?elik, Esranur Fidan,Gümü?, Gülay,Musluoglu, Emel
-
p. 830 - 839
(2020/01/21)
-
- ORGANIC COMPOUND, THREE-DIMENSIONAL ORGANIC FRAMEWORK FORMED BY USING ORGANIC COMPOUND, SEPARATION SIEVE AND OPTICAL LAYER, WHICH COMPRISE ORGANIC FRAMEWORK, AND OPTICAL DEVICE COMPRISING OPTICAL LAYER AS OPTICAL AMPLIFICATION LAYER
-
An organic compound, a three-dimensional organic structure formed by using the organic compound, a separation sieve and an optical layer having the organic structure, and an optical device having the optical layer as an optical amplification layer are provided. The organic structure includes a plurality of organic molecules self-assembled by non-covalent bonding. Each of the unit organic molecules has an aromatic ring, a first pair of substituents being connected to immediately adjacent positions of substitutable positions of the aromatic ring, and a second pair of substituents being connected to immediately adjacent positions of remaining substitutable positions of the aromatic ring. The unit organic molecules are self-assembled by van der Waals interaction, London dispersion interaction or hydrogen bonding between the first and the second pairs of the substituents and by pi-pi interactions between the aromatic rings.
- -
-
Paragraph 0342; 0343; 0344
(2019/02/13)
-
- Organic compound and 3-dimensional organic framework formed using the same
-
Provided is a three-dimensional organic framework. The organic framework comprises a plurality of organic molecules which are self-assembled by non-covalent bonds. Each of the organic molecules comprises: a first pair of substituents which are each bound to an aromatic ring and to immediately adjacent positions among substitutable positions of the aromatic ring; and a second pair of substituents which are each bound to immediately adjacent positions among the rest of the substitutable positions. The organic molecules are self-assembled through Van Der Waals interactions, London dispersion interactions, or hydrogen bonding between the first and second pairs of the substituents, and andpi;-andpi; interactions between the aromatic rings.COPYRIGHT KIPO 2018
- -
-
Paragraph 0298; 0301; 0302
(2018/07/07)
-
- Hydrogen bond-driven columnar self-assembly of electroluminescent D-A-D configured cyanopyridones
-
Herein, we report the design and synthesis of a new series of flying bird-shaped liquid crystalline (LC) cyanopyridone derivatives with a D-A-D architecture, CPO-1 to CPO-4. Their mesomorphic, photophysical, electrochemical, and electroluminescence charac
- Vinayakumara,Ulla, Hidayath,Kumar, Sandeep,Pandith, Anup,Satyanarayan,Rao, D. S. Shankar,Prasad, S. Krishna,Adhikari, Airody Vasudeva
-
supporting information
p. 7385 - 7399
(2018/07/25)
-
- Fluorescent columnar bis(boron difluoride) complexes derived from tetraketonates
-
Three new series of bis-(boron difluoride) complexes 1a-c derived from substituted tetraketonates 2a-c are reported, and their mesomorphic and optical properties have been investigated. Two single crystals of mesogenic ligand 2a (n = 6) and nonmesogenic d
- Chen, Ya-Wen,Lin, Yen-Chun,Kuo, Hsiu-Ming,Lai, Chung K.
-
p. 5465 - 5477
(2017/07/10)
-
- 2,1,3-Benzothiadiazole-based fluorophores. Synthesis, electrochemical, thermal and photophysical characterization
-
Three photoactive compounds with π-extended conjugation based on the 2,1,3-benzothiadiazole unit were synthesized and characterized. The compounds exhibited absorption in the violet-blue region with molar absorptivity coefficients and radiative rate constants arising from spin and symmetry allowed 1ππ* electronic transitions. An emission located in the green region with a large Stokes shift was observed, which was most likely due to a charge-transfer mechanism in the excited state. In spin-coated films a dependence on the fluorescence emission intensity with the size of the alkoxy chain could be observed, where an effective non-radiactive channel seems to be present to deactivate the excited state. The thermal properties were analyzed by differential scanning calorimetry (DSC), and all final compounds exhibited a similar behavior with a crystal-isotropic liquid transition during the heating scan and isotropic liquid-crystal transition during the cooling process. Thermogravimetric analysis indicated a main thermal event with an initial decomposition temperature that was higher than 340?°C. The electrochemical characterization indicate that the compounds exhibited a reversible peak at ?1.48?V and an irreversible oxidation process at 0.94?V versus Ag/Ag+. The electrochemical band gap was calculated to be approximately 2.30?eV versus NHE. The spectroelectrochemical measurements demonstrated changes in the absorption spectra due to changes in the electronic structure of the conjugated molecules under oxidative and reductive potentials.
- Frizon, Tiago Elias Allievi,Valdivia Martínez, Julio César,Westrup, José Luiz,Duarte, Rodrigo da Costa,Zapp, Eduardo,Domiciano, Kelvin Guessi,Rodembusch, Fabiano Severo,Dal-Bó, Alexandre Gon?alves
-
-
- Synthesis and self-assembly of phthalocyanine-tethered block copolymers
-
A series of novel phthalocyanine (Pc)-tethered block copolymers, Pc-poly(methyl methacrylate)-block-polystyrene (Pc-PMMA-b-PS), with various molecular weights (number average molecular weight mass = 41, 66, 86 kg mol-1), were prepared by atom transfer radical polymerization and click chemistry. The structurally related Pc-tethered homopolymer, Pc-PMMA was also synthesized for comparison. Pc-PMMA forms homogeneous polymer films containing π-assemblies of the terminal Pc groups, whereas Pc-PMMA-b-PS self-assembles into a cylindrical morphology in which the Pc units show π-π interactions inside the confined PMMA cylinders. Such polymer designs have potential applications in optoelectronic devices. This journal is
- Aimi, Junko,Komura, Motonori,Iyoda, Tomokazu,Saeki, Akinori,Seki, Shu,Takeuchi, Masayuki,Nakanishi, Takashi
-
supporting information
p. 2484 - 2490
(2015/03/18)
-
- Correlation of structure and photovoltaic performance of benzo[1,2-b:4,5-b′]dithiophene copolymers alternating with different acceptors
-
Four π-conjugated benzo[1,2-b:4,5-b′]dithiophene (BDT) based polymers were synthesized for application in polymer solar cells. These polymers possessed desirable HOMO/LUMO levels for polymer photovoltaic applications. PBDTT-TTz and PBDTT-DTBT displayed strong absorption in the range of 300-650 nm, while PBDTT-DPP and PBDTT-TTDPP showed a further 100 nm extended absorption band. The lowest unoccupied molecular orbital energy levels of polymers were tuned effectively from -3.34 eV to -3.81 eV by fusing with different accepting units. A maximum power conversion efficiency of 2.60% was obtained from photovoltaic cells with a PBDTT-TTz:PC61BM (1:2, w/w) blend film as the active layer, with a short circuit current density of 8.37 mA cm-2, an open circuit voltage of 0.70 V, and a fill factor of 44.3%. This journal is
- Yu, Jiangsheng,Zhao, Baofeng,Nie, Xuemei,Zhou, Baojin,Li, Yang,Hai, Jiefeng,Zhu, Enwei,Bian, Linyi,Wu, Hongbin,Tang, Weihua
-
supporting information
p. 2248 - 2255
(2015/03/18)
-
- Facile bottom-up synthesis of coronene-based 3-fold symmetrical and highly substituted nanographenes from simple aromatics
-
A facile and efficient self-sorting assemble (CSA) strategy has been paved for bottom-up construction of the 3-fold symmetrical and highly substituted hexa-cata-hexabenzocoronenes (c-HBCs), the trithieno analogues, and larger disc-shaped PAHs from simple
- Zhang, Qiang,Peng, Hanqing,Zhang, Guishan,Lu, Qiongqiong,Chang, Jian,Dong, Yeye,Shi, Xianying,Wei, Junfa
-
supporting information
p. 5057 - 5064
(2014/04/17)
-
- Solvent assisted fluorescence modulation of a C3-symmetric organogelator
-
The synthesis and self-assembling properties of C3 symmetric donor-acceptor molecules containing 1,3,4-oxadiazole and bisthiophene moieties in the core functionalized with octyl (BTOX8) and dodecyl (BTOX12) substituted phenyl acetylene units at
- Prabhu, Deepak D.,Sivadas, Aneesh P.,Das, Suresh
-
supporting information
p. 7039 - 7046
(2014/08/18)
-
- Polar effect in columnar unsymmetric 1,3,4-oxa(thia)diazoles
-
Three new series of heterocyclic 1,3,4-oxa(thia)diazoles 1a-c were prepared and their mesomorphic behavior studied. All compounds 1a exhibited monotropic columnar phases, which were confirmed by powder XRD diffractometer. Compounds 1b were not mesogenic.
- Hu, Tarng-Shiang,Lin, Kuan-Ting,Mu, Chih-Chin,Kuo, Hsiu-Ming,Chen, Ming-Chou,Lai, Chung K.
-
p. 9204 - 9213
(2015/02/19)
-
- Columnar catenar bisoxazoles and bisthiazoles
-
Three new series of catenar liquid crystals 1a-c derived from heterocyclic bisoxazoles and bisthiazoles exhibiting columnar phases were reported. All compounds 1a-c exhibited hexagonal columnar phases, which were confirmed by powder XRD diffractometer. Co
- Lin, Kuan-Ting,Kuo, Hsiu-Ming,Sheu, Hwo-Shuenn,Lai, Chung K.
-
p. 6457 - 6466
(2015/03/30)
-
- Unsymmetric 1,3,4-oxa(thia)diazoles of quinoxaline-naphthalene conjugates
-
Two new series of unsymmetric 1,3,4-oxa(thia)diazoles 1a,b containing both quinoxaline and naphthalene moieties were prepared and their mesomorphic properties were investigated. The mesomorphic behavior of compounds 1a,b and 2 was studied by DSC analysis
- Lin, Kuan-Ting,Kuo, Hsiu-Ming,Sheu, Hwo-Shuenn,Lai, Chung K.
-
p. 9045 - 9055
(2013/09/24)
-
- 2,1,3-Benzoxadiazole and 2,1,3-benzothiadiazole-based fluorescent compounds: Synthesis, characterization and photophysical/electrochemical properties
-
Six new fluorescent compounds derived from 2,1,3-benzoxadiazole and 2,1,3-benzothiadiazole heterocycles with varying numbers of alkoxy chains were successfully synthesized. Sonogashira cross-coupling was used as the key synthetic step to link the central and terminal aromatic units through an acetylenic linker unit which ensures molecular planarity and extension of the conjugation. All of the synthesized compounds showed UV-vis absorption in the 426-437 nm range with reasonably high molar extinction coefficients. All six compounds emit in the green region of the visible spectrum with reasonably large Stokes shifts (95-107 nm) and medium emission efficiencies (Φf = 0.27-0.32). Electrochemical studies showed that the compounds have closely spaced HOMO and LUMO energy levels and that they may present good electron transporting properties.
- Behramand, Behramand,Molin, Fernando,Gallardo, Hugo
-
p. 600 - 605
(2012/11/06)
-
- New octahedral, head-tail iron(II) complexes with spin crossover properties
-
The synthesis and characterisation of four new Schiff base-like ligands with long alkyl chains in the outer periphery and their iron(II) complexes with methanol and pyridine as axial ligands is reported. Two of the methanol complexes crystallise in a lipi
- Schlamp, Stephan,Thoma, Peter,Weber, Birgit
-
experimental part
p. 2759 - 2768
(2012/08/14)
-
- Full-color tunable photoluminescent ionic liquid crystals based on tripodal pyridinium, pyrimidinium, and quinolinium salts
-
Color-tunable luminescent ionic liquid crystals have been designed as a new series of luminescent materials. To achieve tuning of emission colors, intramolecular charge transfer (ICT) character has been incorporated into tripodal molecules. A series of th
- Tanabe, Kana,Suzui, Yuko,Hasegawa, Miki,Kato, Takashi
-
supporting information; scheme or table
p. 5652 - 5661
(2012/06/04)
-
- New moderate bandgap polymers containing alkoxysubstituted-benzo[c][1,2,5] thiadiazole and thiophene-based units
-
Alkoxysubstituted benzo[c][1,2,5]thiadiazole electron accepting units were prepared and copolymerized with various thiophene-based electron donating monomers to produce new low bandgap polymers P1-4. The materials showed broad absorption in the range from
- Lim, Zheng Bang,Xue, Bofei,Bomma, Swarnalatha,Li, Hairong,Sun, Shuangyong,Lam, Yeng Ming,Belcher, Warwick J.,Dastoor, Paul C.,Grimsdale, Andrew C.
-
experimental part
p. 4387 - 4397
(2012/05/20)
-
- Modular engineering of H-bonded supramolecular polymers for reversible functionalization of carbon nanotubes
-
A H-bond-driven, noncovalent, reversible solubilization/functionalization of multiwalled carbon nanotubes (MWCNTs) in apolar organic solvents (CHCl 3, CH2Cl2, and toluene) has been accomplished through a dynamic combinatio
- Llanes-Pallas, Anna,Yoosaf,Traboulsi, Hassan,Mohanraj, John,Seldrum, Thomas,Dumont, Jacques,Minoia, Andrea,Lazzaroni, Roberto,Armaroli, Nicola,Bonifazi, Davide
-
supporting information; experimental part
p. 15412 - 15424
(2011/11/12)
-
- Electrochromic devices and thin film transistors from a new family of ethylenedioxythiophene based conjugated polymers
-
New electrochromic conjugated polymers and their corresponding devices based on EDOT (ethylenedioxythiophene) are described. The best of these polymers display response times on the order of 1s and high switchable contrast in the visible and near-infrared
- Li, Zhongtao,Zhang, Yuan,Holt, Amanda L.,Kolasa, Borys P.,Wehner, Justin G.,Hampp, Andreas,Bazan, Guillermo C.,Nguyen, Thuc-Quyen,Morse, Daniel E.
-
scheme or table
p. 1327 - 1334
(2011/07/31)
-
- A new family of bent-core C2-symmetric liquid crystals
-
A series of C2-symmetric compounds with different core sizes and varying lengths and numbers of alkoxy side chains were prepared, and the factors influencing their liquid crystalline mesophase behaviour were investigated. The compounds studied were based on benzophenone, dibenzylidene-acetone, and 1,9-diphenyl-nona-1,3,6,8-tetraen-5-one cores with either 1 or 2 linear alkoxy side chains. The side chains were varied in length from C6H13 to C12H25. The liquid crystalline mesophase behaviour of the compounds was investigated using differential scanning calorimetry, polarizing optical microscopy, and small-angle X-ray scattering (SAXS). It was found that a number of the molecules were able to self-assemble into smectic and nematic liquid crystalline phases.
- Hope-Ross, Kyle A.,Heiney, Paul A.,Kadla, John F.
-
supporting information; experimental part
p. 639 - 645
(2010/08/21)
-
- New discotic mesogens based on triphenylene-fused triazatruxenes: Synthesis, physical properties, and self-assembly
-
A new type of discotic mesogen based on triphenylene-fused triazatruxenes was prepared by microwave-assisted 6-fold Suzuki coupling reactions from hexabromotriazatruxene, followed by FeCl3-mediated oxidative cyclodehydrogenation. These disklike molecules showed extended π-conjugation, compared with the triphenylene and triazatruxene themselves. More importantly, they possess desirable HOMO energy levels, which allow efficient charge injection from electrodes such as gold electrodes. Their thermal behavior and self-assembly were studied by different techniques such as thermogravimetric analysis, differential scanning calorimetry, polarizing optical microscopy, and variable-temperature X-ray diffraction. These new discotic mesogens have very good thermal stability and show thermotropic liquid crystalline behavior. Ordered columnar liquid crystalline phase and crystalline phase were observed in both compounds with tunable phase transition temperatures and mesophase widths. The charge carrier mobilities of these extended triazatruxene samples were determined using the space-charge limited-current (SCLC) technique and high hole mobilities of 0.03 and 0.8 cm2 V-1 s-1) were obtained for TP-TATC6 and TP-TATC12, respectively. Interestingly, the long-aliphatic-chain-substituted TP-TATC12 can gelate several nonpolar hydrocarbon solvents or polar aliphatic alcohol and ester solvents, because of strong intermolecular interactions. All these properties qualify this new type of discotic liquid crystals as potential hole transporting materials for electronic devices such as field-effect transistors, light-emitting diodes, and solar cells.
- Zhao, Baomin,Liu, Bo,Png, Rui Qi,Zhang, Kai,Lim, Kheng Aik,Luo, Jing,Shao, Jinjun,Ho, Peter K.H.,Chi, Chunyan,Wu, Jishan
-
experimental part
p. 435 - 449
(2011/10/09)
-
- Room temperature liquid crystalline perylene diester benzimidazoles with extended absorption
-
The synthesis, characterization and thermotropic properties of novel asymmetrically substituted discotic molecules, perylene diester benzimidazoles (PDBIs), are presented. PDBIs were designed with an imidazole unit at 3,4 positions and a bisester moiety a
- Wicklein, Andre,Muth, Mathis-Andreas,Thelakkat, Mukundan
-
supporting information; experimental part
p. 8646 - 8652
(2011/06/09)
-
- Synthesis and optical/thermal behavior of new Azo photoisomerizable discotic liquid crystals
-
In this study, discotic azo compounds were prepared by a reductive coupling of 5-nitroisophthalic acid followed by a convergent synthesis, resulting in five new examples of azo photoisomerizable discotic molecules, which differ from each other by the link
- Westphal, Eduard,Bechtold, Ivan H.,Gallardo, Hugo
-
experimental part
p. 1319 - 1328
(2011/10/02)
-
- H-Bonded metallomesogens: preparation, characterization, and mesomorphic studies of (3-hydroxypropylimino)propan-1,2-diols
-
Two series of new Schiff bases 2 (n=8, 12, 16) derived from (3-hydroxypropyl imino)propan-1, 2-diol with a hydroxyl group at C19/C20-position and their palladium complexes 1 were prepared and their mesomorphic properties investigated
- Chien, Chieh,Chen, Chun-Jung,Sheu, Hwo-Shuenn,Lee, Gene-Hsiang,Lai, Chung K.
-
scheme or table
p. 3583 - 3592
(2010/06/21)
-
- Solvophobic control of core-substituted naphthalene diimide nanostructures
-
The requirements for the self-assembly of 2,3-annulated core-substituted NDIs into discrete worm-like nanostructures are explored in MeOH-CHCl 3 solutions. AFM was used to visualize and characterize the structures formed at precise proportions
- Bhosale, Sheshanath V.,Jani, Chintan,Lalander, Cecilia H.,Langford, Steven J.
-
supporting information; experimental part
p. 973 - 975
(2010/06/12)
-
- Structural characterization and physical properties of new tetrabenzopentaphene mesogens
-
The synthesis, structural and mesomorphic properties of five tetrabenzopentaphene derivatives are presented. All the compounds exhibit columnar mesophases which have been characterized by optical microscopy, differential scanning calorimetry and X-ray dif
- Romero, Carmen,Pena, Diego,Perez, Dolores,Guitian, Enrique,Termine, Roberto,Golemme, Attilio,Omenat, Ana,Barbera, Joaquin,Serrano, Jose Luis
-
supporting information; experimental part
p. 4725 - 4731
(2010/05/18)
-
- Synthesis and stereochemistry of long-chain quinoxaline metallocyclophanes
-
(Figure Presented) Condensation of 1,2-diamino-4,5-bis(n-alkoxy)arenes with an oligopyridyl-type α-diketone afforded a series of long-chain pyridine-quinoxaline hybrids. These were evaluated for their ability to self-assemble with tetrahedral Cu(I) and Ag
- Howard, Mark J.,Heirtzler, Fenton R.,Dias, Sandra I. G.
-
p. 2548 - 2553
(2008/09/19)
-
- Physicochemical characterization of octakis(alkyloxy)-substituted Zn(II)-phthalocyanines non-covalently incorporated into an organogel and their remarkable morphological effect on the nanoscale-fibers
-
A series of octakis(alkyloxy)-substituted Zn(II)-phthalocyanines were efficiently incorporated into an organogel made of (1R,2R)-trans-1,2- bis(dodecanoylamino)cyclohexane by means of multiple cooperative non-covalent interactions, and SEM revealed the fo
- Diaz Diaz, David,Torres, Tomas,Zentel, Rudolf,Davis, Riju,Brehmer, Martin
-
p. 2369 - 2371
(2008/02/12)
-
- A new class of discotic mesogens derived from tris(N-salicylideneaniline)s existing in C3h and Cs keto-enamine forms
-
(Chemical Equation Presented) Two series of a unique class of columnar liquid crystals derived from tris(N-salicylideneaniline)s [TSANs] in which the proton and the electron interact with each other through the H-bonding environment are reported. The synt
- Yelamaggad, Channabasaveshwar V.,Achalkumar, Ammathnadu S.,Rao, D. S. Shankar,Prasad, S. Krishna
-
p. 8308 - 8318
(2008/03/12)
-
- Two-dimensional porous molecular networks of dehydrobenzo[12]annulene derivatives via alkyl chain interdigitation
-
The self-assembly of a series of hexadehydrotribenzo[12]annulene (DBA) derivatives has been scrutinized by scanning tunneling microscopy (STM) at the liquid-solid interface. First, the influence of core symmetry on the network structure was investigated b
- Tahara, Kazukuni,Furukawa, Shuhei,Uji-I, Hiroshi,Uchino, Tsutomu,Ichikawa, Tomoyuki,Zhang, Jian,Mamdouh, Wael,Sonoda, Motohiro,De Schryver, Frans C.,De Feyter, Steven,Tobe, Yoshito
-
p. 16613 - 16625
(2007/10/03)
-
- Self-assembly of semifluorinated Janus-dendritic benzamides into bilayered pyramidal columns
-
(Figure Presented) Two faces: Semifluorinated Janus-dendritic benzamides self-assemble into supramolecular bilayered pyramidal columns with diameters over twofold greater than those of columns generated from twin-dendritic benzamides (see model). The Janu
- Percec, Virgil,Imam, Mohammad R.,Bera, Tushar K.,Balagurusamy, Venkatachalapathy S. K.,Peterca, Mihai,Heiney, Paul A.
-
p. 4739 - 4745
(2007/10/03)
-
- CHARGE-TRANSPORT MATERIALS, METHODS OF FABRICATION THEREOF, AND METHODS OF USE THEREOF
-
Briefly described, embodiments of this disclosure include charge-transport materials, methods of forming charge-transport materials, and methods of using the charge-transport materials.
- -
-
Page/Page column 82
(2008/06/13)
-
- In Situ Synthesis of Hexakis(alkoxy)diquinoxalino[2,3-a:2′,3′ -c]phenazines: Mesogenic Phase Transition of the Electron-Deficient Discotic Compounds
-
2,3,8,9,14,15-Hexakis(alkoxy)diquinoxalino[2,3-a:2′,3′- c]phenazines with alkyl side chains varying from 6 to 12 carbon atoms were readily synthesized by the condensation of hexaketocyclohexane with the respective 1,2-bisalkoxy-4,5-diaminobenzene. Polariz
- Ong, Chi Wi,Liao, Su-Chih,Chang, Tsu Hsing,Hsu, Hsiu-Fu
-
p. 3181 - 3185
(2007/10/03)
-
- Synthesis and specific features of mesomorphic behavior of new polysubstituted triphenylenes
-
Previously unknown 2,3,6,7,10,11-hexakis(dodecyloxy)triphenylene and -(tetradecyloxy)triphenylene were synthesized. The structures of the synthesized compounds were proved by elemental analysis and spectral methods. Polymesomorphism was found for the first time and studied for substances of the hexaalkoxytriphenylene homologic series, as well as liotropic mesomorphism in a series of organic solvents.
- Zemtsova,Zheleznov
-
p. 1743 - 1748
(2007/10/03)
-
- Synthesis and Mesomorphism of [N,N'-Bis(3',4'-didodecyloxyphenyl)diaminoglyoxime] Complexes with Nickel and Palladium
-
A new vic-dioxime, [N,N'-Bis(3',4'-didodecyloxyphenyl)diaminoglyoxime](H2L) has been prepared from 3,4-didodecyloxyaniline and (E,E)-dichloroglyoxime. The (E,E)- and (E,Z)-forms of Ni(II) complex have been isolated, but palladium complex could
- Guemues, G.,Ahsen, V.
-
p. 167 - 178
(2007/10/03)
-
- Liquid crystalline properties of bis (salicylaldiminato) copper (II) complexes: The first columnar discotics derived from salicylaldimine Schiff bases
-
The synthesis and mesomorphic properties of a homologous series of N-(2-hydroxy-4-n-alkoxybenzylidene)-3′,4′-di-n-alkoxylanilines and their copper(II) complexes bis[(N-3′,4′-dialkoxyphenyl)-4-n-alkoxylsalicylaldiminato]copper(II) are reported. The disc-li
- Lai, Chung K.,Chang, Chung-Hsiung,Tsai, Chun-Hsien
-
p. 599 - 602
(2007/10/03)
-
- Synthesis and characterisation of some novel phthalocyanines containing both oligo(ethyleneoxy) and alkyl or alkoxy side-chains: novel unsymmetrical discotic mesogens
-
The synthesis of unsymmetrical, peripheral octa-substituted phthalocyanines which contain a combination of 1,4,7,10-tetraoxaundecyl and hexadecyl or dodecyloxy side-chains is described.These compounds were prepared by mixed phthalonitrile cyclotetramisati
- Clarkson, Guy J.,McKeown, Neil B.,Treacher, Kevin E.
-
p. 1817 - 1824
(2007/10/02)
-
- A Novel, Efficient and General Synthetic Route to Unsymmetrical Triphenylene Mesogens using Palladium-catalysed Cross-coupling Reactions
-
A novel, clean and efficient route to unsymmetrical triphenylene mesogens has been developed using palladium-catalysed cross-coupling reactions involving arylboronic acids.
- Goodby, John W.,Hird, Michael,Toyne, Kenneth J.,Watson, Timothy
-
p. 1701 - 1702
(2007/10/02)
-
- SYNTHESIS AND PROPERTIES OF NOVEL OCTASUBSTITUTED METALLOPHTHALOCYANINES
-
A series of novel metallophthalocyanines (OC12H25)8MPc, where M = Zn, Cu, Ni and Co have been prepared.These compounds are based upon the known metal-free (2,3,9,10,16,17,23,24) octakis(dodecyloxy)-phthalocyanine.These compounds all display discotic mesop
- Severs, L. M.,Underhill, A. E.,Edwards, D.,Wight, P.,Thetford, D.
-
p. 235 - 240
(2007/10/02)
-
- Evidence of an ordered columnar mesophase in peripherally octa-n-alkoxy-substituted phthalocyanines
-
Liquid crystalline phthalocyanines with eight n-alkoxy chains have been synthesized and their mesophase structures determined by X-ray diffraction.The mesophases appear to be of the Dho type.Reasons for the preference of ordered columns are dis
- Pol, J. F. van der,Neeleman, E.,Zwikker, J. W.,Nolte, R. J. M.,Drenth, W.
-
p. 615 - 620
(2007/10/02)
-
- PREMIERS EXEMPLES DE SELS HETEROAROMATIQUES A QUATRE CHAINES PARAFFINIQUES POSSEDANT DES PROPRIETES MESOMORPHES COLONNAIRES
-
Homologous series of diaryl-3,5 dithiolium-1,2 and diaryl-2,6 pyrylium salts, in which aryls possess two flexible alkoxy chains, were synthesized.With n>=8, dithiolium salts exhibit a columnar hexagonal mesophase.
- Strzelecka, H.,Jallabert, C.,Veber, M.,Davidson, P.,Levelut, A. M.,et al.
-
p. 403 - 412
(2007/10/02)
-
- NOUVEAUX SCRISTAUX LIQUIDES COLONNAIRES : CATIONS HETEROAROMATIQUES AVEC SIX CHAINES ALCOXY
-
The synthesis of 2,4,6-triarylpyrylium tetrafluoroborates with six alkoxy chains is described.They exhibit Dho mesophases for a large range of temperatures (ca. 200 deg C).The compounds with n=5,8 and 12 are mesomorphic at room temperature.
- Strzelecka, H.,Jallabert, C.,Veber, M.,Davidson, P.,Levelut, A. M.
-
p. 395 - 402
(2007/10/02)
-