117241-30-2Relevant articles and documents
Phase transition behaviour of amphiphilic supermolecules possessing a semiperfluorinated alkyl chain
Yamaguchi, Akihisa,Yoshizawa, Atsushi
, p. 181 - 189 (2007)
Recently we have found that a novel amphiphilic compound, 1H, 1H, 2H, 2H-heptadecafluoro-1-decyl 3, 4, 5- tris[6-(4'-cyanobiphenyl-4-yloxy)hexyloxy] benzoate, exhibited the phase sequence of isotropic liquid -smectic A-bicontinuous cubic-crystal. In this
Synthesis and Self-Assembly of Novel s-Tetrazine-Based Gelator
Khattab, Tawfik A.
, (2018)
The design, synthesis and self-assembly of new symmetrical 3,6-bis(4-(3,4,5-tris(dodecyloxy)benzoate)phenyl)-1,2,4,5-tetrazine were described. The novel gelator, sym-tetrazine, was prepared by addition reaction of 4-cyanophenol with hydrazine monohydrate
Columnar self-assembly of luminescent bent-shaped hexacatenars with a central pyridine core connected with substituted 1,3,4-oxadiazole and thiadiazoles
Pradhan, Balaram,Gupta, Ravindra Kumar,Pathak, Suraj Kumar,De, Joydip,Pal, Santanu Kumar,Achalkumar, Ammathnadu S.
, p. 3781 - 3798 (2018)
Bent-shaped molecules with a central pyridine core flanked with substituted 1,3,4-oxadiazole and thiadiazole derivatives with a variation in the number and length of terminal tails were synthesized. Thiadiazole based compounds exhibited a wider mesophase
Room temperature columnar liquid crystalline self-assembly of acidochromic, luminescent, star-shaped molecules with cyanovinylene chromophores
Gupta, Ravindra Kumar,Pathak, Suraj Kumar,De, Joydip,Pal, Santanu Kumar,Achalkumar, Ammathnadu S.
, p. 1844 - 1852 (2018)
Two new star-shaped tris(N-salicylideneanilines) (TSANs) incorporated with cyanovinylene chromophores were prepared through a multistep synthesis. The position of the cyano group was altered in the target molecules, to understand its impact on the photoph
New cyanopyridone-based unsymmetrical dyads: The effect of donor strength on their optoelectronic properties
Vinayakumara,Kesavan, Rajalakshmi,Kumar, Sandeep,Adhikari, Airody Vasudeva
, p. 2052 - 2060 (2019)
Herein, we describe the design, synthesis and optoelectronic characterization of a new series of highly fluorescent dyes configured with a D-A-D′ architecture, viz. CP1 to CP7. In the new molecular design, various electron-donating scaffolds were integrat
Dicyanamide Salts that Adopt Smectic, Columnar, or Bicontinuous Cubic Liquid-Crystalline Mesophases
Park, Geonhui,Goossens, Karel,Shin, Tae Joo,Bielawski, Christopher W.
, p. 6399 - 6411 (2018)
Although dicyanamide (i.e., [N(CN)2]?) has been commonly used to obtain low-viscosity, halogen-free, room-temperature ionic liquids, liquid-crystalline salts containing such anions have remained virtually unexplored. Here we report a
Optoelectronic exploration of novel non-symmetrical star-shaped discotic liquid crystals based on cyanopyridine
Vinayakumara,Swamynathan,Kumar, Sandeep,Adhikari, Airody Vasudeva
, p. 16999 - 17008 (2018)
A novel family of non-symmetrical star-shaped cyanopyridine based discotic liquid crystals (CPBz6, CPBz8 and CPBz12) was designed and synthesized, as potential luminescent materials for optoelectronic applications. The length of one of the arms in the design was systematically varied to determine the structure-property relationships. Evidently, all of the compounds exhibited a highly prospective ordered columnar mesomorphism stabilized at ambient temperature with advantageous very low isotropization temperatures. Furthermore, their photophysical characteristics were investigated in depth, both in solution and in the liquid crystal (LC) state. The discotics were found to be intense blue emitters with reasonably good quantum efficiency. Their dynamic intramolecular charge-transfer (ICT) behaviour was confirmed by steady-state absorption and fluorescence spectral analysis in varied solvent polarity. Furthermore, their electrochemical properties were studied from the combination of an experimental method and the theoretical simulations, which elucidated the low laying frontier molecular orbitals (FMOs) with a narrow energy band gap of ～2.0 eV. The resulted visually perceivable emission with favourable energy levels showcases their possible application in electronic display devices.
Columnar liquid crystalline self-assembly of hydrogen-bonded rod-coil diblock complexes created from pyrazole/benzoic acid derivatives
Kim, Ho-Joong,Cho, Sung,Park, Jung Su
, p. 2740 - 2745 (2015)
We synthesized hydrogen-bonded rod-coil diblock complexes having both a rigid rod and a flexible coil by combining bithiophene-conjugated pyrazole derivatives and alkoxy-substituted benzoic acid derivatives. Their self-assembled nanostructures were investigated using polarized optical microscopy, molecular modeling, and X-ray scattering in liquid crystalline (LC) state. They form different types of supramolecularLCphases depending on the numbers and lengths of alkoxy substituents in the benzoic acids. Diblock complexes with low volume ratios of aliphatic coils to rod segments (dioctyloxy chains) self-assembled into lamellar phases; systems with higher ratios (didodecyloxy, trioctyloxy, and tridodecyloxy chains) formed columns. In these columnar structures, two pyrazoles and two benzoic acids formed an aromatic tetramer core through N-H···O and O-H···N hydrogen bonds. Two sets of aromatic tetramers surrounded by flexible aliphatic chains were then stacked to give columnar phases. These are novel examples of supramolecular LC structures comprising hydrogen-bonded pyrazole-benzoic acid derivatives with tetrameric rigid aromatic scaffolds.
One-Dimensional Ion Transport in Self-Organized Columnar Ionic Liquids
Yoshio, Masafumi,Mukai, Tomohiro,Ohno, Hiroyuki,Kato, Takashi
, p. 994 - 995 (2004)
New fan-shaped ionic liquids forming columnar liquid crystalline phases have been prepared to obtain one-dimensional ion-transporting materials. The ionic liquids consist of two incompatible parts: an imidazolium-based ionic part as an ion-conducting part
Two asymmetrical perylene diimide derivatives: Synthesis, optical-electrochemical properties and morphologies of self-assembly
Liu, Jian,Song, Yuting,Tao, Jiayu,Xu, Hai-Jun,Zhang, Jiuxuan
, (2021/11/01)
Perylene diimides (PDIs) belong to an important class of photoactive materials due to their excellent electrical and photophysical properties. Highly controlled aggregation and self-assembly attributed to the large π-conjugated aromatic scaffold have led to a variety of optoelectronic applications. In this manuscript, two PDI derivatives PDI-1 and PDI-2 with unsymmetrical N-substitution of amine and ester-bridge were designed and synthesized. These two compounds were characterized by NMR, Fourier transform infrared (FT-IR), and high-resolution mass spectrometry (HRMS). The photophysical properties were studied by UV–Vis absorption and fluorescence spectroscopy. Cyclic voltammograms of PDI-1 and PDI-2 were investigated and HOMO and LUMO energy levels of both two PDIs were estimated as ?6.2 and ?3.9 ?eV, respectively. Thermal properties were also studied by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). PDI-1 was assembled into nanotubes while PDI-2 was assembled into nanobelts respectively, via a reprecipitation method. PDI-1 and PDI-2 show good potential application in organic devices such as solar cells, organic field-effect transistors (OFETs) and so on.
