188685-16-7Relevant academic research and scientific papers
Tunable superstructures of dendronized graphene nanoribbons in liquid phase
Xu, Fugui,Yu, Chunyang,Tries, Alexander,Zhang, Heng,Kl?ui, Mathias,Basse, Kristoffer,Hansen, Michael Ryan,Bilbao, Nerea,Bonn, Mischa,Wang, Hai I.,Mai, Yiyong
, p. 10972 - 10977 (2019)
In this Communication, we report the first synthesis of structurally well-defined graphene nanoribbons (GNRs) functionalized with dendritic polymers. The resultant GNRs possess grafting ratios of 0.59-0.68 for the dendrons of different generations. Remark
Synthesis and self-assembly of aroylhydrazone based polycatenars: A structure-property correlation
Singh, Hemant Kumar,Gupta, Ravindra Kumar,Singh, Sachin Kumar,Rao, D.S. Shankar,Prasad, S. Krishna,Achalkumar, Ammathnadu S.,Singh, Bachcha
, p. 282 - 290 (2019/04/10)
Two series of aroylhydrazone based polycatenars which differ from each other in terms of the linking groups (semi flexible ester or flexible ether linkage) were synthesized. These hexacatenars were mesogenic and also showed gelation in organic solvents at
Synthesis, Thermal, and Optical Properties of Tris(5-aryl-1,3,4-oxadiazol-2-yl)-1,3,5-triazines, New Star-Shaped Fluorescent Discotic Liquid Crystals
Tober, Natalie,Rieth, Thorsten,Lehmann, Matthias,Detert, Heiner
supporting information, p. 15295 - 15304 (2019/11/14)
The synthesis of tris(aryloxadiazolyl)triazines (TOTs), C3-symmetrical star-shaped mesogenes with a 1,3,5-triazine center, 5-phenyl-1,3,4-oxadiazole arms, and various peripheral alkoxy side chains is reported. Threefold Huisgen reaction on a ce
Fluorescent columnar bis(boron difluoride) complexes derived from tetraketonates
Chen, Ya-Wen,Lin, Yen-Chun,Kuo, Hsiu-Ming,Lai, Chung K.
, p. 5465 - 5477 (2017/07/10)
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
Mesomorphism and luminescence properties of platinum(II) complexes with tris(alkoxy)phenyl-functionalized pyridyl pyrazolate chelates
Liao, Ching-Ting,Chen, Hsiu-Hui,Hsu, Hsiu-Fu,Poloek, Anurach,Yeh, Hsiu-Hsuan,Chi, Yun,Wang, Kang-Wei,Lai, Chin-Hung,Lee, Gene-Hsiang,Shih, Chun-Wei,Chou, Pi-Tai
experimental part, p. 546 - 556 (2011/03/21)
A series of new mesomorphic platinum(II) complexes 1-4 bearing pyridyl pyrazolate chelates are reported herein. In this approach, pyridyl azolate ligands have been strategically functionalized with tris(alkoxy)phenyl groups with various alkyl chain length
Influence of alkoxy tail length on the phase behaviour of mesogen-jacketed liquid crystalline polymers with fan-shaped pendants
Yang, Chang-An,Wang, Guo,Xie, He Lou,Zhang, Hai Liang
experimental part, p. 4503 - 4510 (2011/11/06)
A series of new monomers of 2, 5-bis [(3, 4, 5-trialkoxy benzyl) oxycarbonyl] styrene (denoted as M-tri-OCmH2m + 1, m = 1, 2, 4, 6, 8, 10, 12, where m indicated the number of carbon atoms in the alkoxy group) were designed and synthesized. Then, their corresponding polymers P-tri-OCmH2m + 1 (m = 1, 2, 4, 6, 8, 10, 12) were synthesized by free radical polymerization. The chemical structure of the monomers was confirmed by elemental analysis, 1H NMR and 13C NMR. The molecular characterization of polymers was performed with 1H NMR, gel permeation chromatography (GPC). The thermal stability of polymers was investigated by thermogravimetric analysis (TGA). The phase structure and transition behaviours were studied using differential scanning calorimetry (DSC), polarized light microscopy (PLM), one- and two-dimensional (1D and 2D) wide-angle X-ray diffraction (WAXD). We found that P-tri-OCmH2m + 1 (m = 1, 2) with short n-alkoxy substituents as the tail form columnar nematic (ΦN) phase; that with the increasing length of alkoxy tails, P-tri-OCmH2m + 1 (m = 4, 6, 8) can demonstrate the hexagonal columnar (ΦH) phase; however, when the length of alkoxy tails exceeded a threshold, P-tri-OCmH2m + 1 (m = 10, 12) only develop into columnar nematic (ΦN) phase instead of ΦH phase.
ROMP-POLYMERIZABLE ELECTRON TRANSPORT MATERIALS BASED ON A BIS-OXADIAZOLE MOIETY
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Page/Page column 49-50, (2009/07/25)
This invention relates generally to a solution processable norbornene monomer, poly(norbornene) homopolymer, and poly(norbornene) copolymer compounds containing a functionalized bis -oxadiazole side chain, and to an electron injecting/transporting layer, a hole -blocking layer, or an emissive material, organic electronic devices and compositions which include these compounds.
Elucidating the structure of the pm3n cubic phase of supramolecular dendrimers through the modification of their aliphatic to aromatic volume ratio
Percec, Virgil,Peterca, Mihai,Tsuda, Yusuke,Rosen, Brad M.,Uchida, Satoshi,Imam, Mohammad R.,Ungar, Goran,Heiney, Paul A.
supporting information; experimental part, p. 8994 - 9004 (2010/04/25)
The synthesis, and structural and retrostructural analysis of a library of second-generation conical dendrons that self-assemble into spherical supramolecular dendrimers is reported. This library consists of amphiphilic dendrons with n-alkyl groups contai
Coassembly of a hexagonal columnar liquid crystalline superlattice from polymer(s) coated with a three-cylindrical bundle supramolecular dendrimer
Percec, Virgil,Ahn, Cheol-H.,Bera, Tushar K.,Ungar, Goran,Yeardley, Duncan J.P.
, p. 1070 - 1083 (2007/10/03)
The synthesis and structural analysis of a polymer containing twin- dendritic benzamide side-groups (i.e. poly{N-[3,4-bis(n-dodecan-1-yloxy)- 5(1-methacryloyl-η-undecan-1-yloxy)phenyl]-3,4,5-tris(n-dodecan-1- yloxy)benzamide}) (19) are described. The disc
Discotic metallomesogens: Mesophase crossover of columnar rectangular to hexagonal arrangements in bis(hydrazinato) nickel(II) complexes
Lai, Chung K.,Tsai, Chun-Hsien,Pang, Yung-Shyen
, p. 1355 - 1360 (2007/10/03)
Three series of N-(3,4-dialkoxybenzylidene)-N′-(3′,4′,5′- trialkoxybenzoyl)hydrazine and their nickel(II) complexes, bis[N-(3,4-dialkoxybenzylidene)-N′-(3′,4′,5′- trialkoxybenzoyl)hydrazinato]nickel(II), were prepared and characterized. The mesomorphic properties of these disc-like compounds were also studied in terms of liquid crystallinity. The orange nickel(II) complexes with ten soft alkoxy side chains exhibited columnar disordered mesophases, which were characterized based on DSC analysis and optical polarized microscopy. Nickel complexes with shorter side chains (n = 5-8) displayed a monotropic columnar rectangular disordered (Colrd) phase; however, complexes with longer side chains showed monotropic (n = 10) and enantiotropic (n = 12, 14) columnar hexagonal disordered (Colhd) phases. Similar nickel complexes (n = 14) with eight side chains exhibited a columnar hexagonal phase, whereas complexes (n= 14) with six side chains formed crystalline phases. The structures of these columnar disordered phases were confirmed by X-ray powder diffraction. XRD data indicated that mesophase crossover from columnar rectangular (Colr) to hexagonal arrangements (Colh) was observed with increasing side chain lengths.
