- Fluorescence-enhanced organogels and mesomorphic superstructure based on hydrazine derivatives
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New low-molecular-mass organic gelators (LMOGs) bearing hydrazine linkage and end-capped by phenyl, namely 1,4-bis[(3,4-bisalkoxyphenyl)hydrozide] phenylene (BPH-n, n = 4, 6, 8, 10), were designed and synthesized. These organogelators have shown great ability to gel a variety of organic solvents to form stable organogels with the critical gelation concentration as low as 8.7 × 10-4 mol L-1 (0.06 wt %). The formed gel has a high gel-sol transition temperature (Tgel) at low gelation concentration. Aggregation-induced emission (AIE) has been observed after gelation though conventional chromophore units not incorporated inBPH-n. The fluorescence quantumyields of xerogel are 2 orders higher than that of dilute solution. In addition, the BPH-n (n=6, 8, 10) exhibited thermotropic hexagonal column (Colh) mesophase, which are stable at room temperature as revealed by differential scanning calorimetry (DSC), polarized optical microscopy (POM), and X-ray diffraction (XRD) studies.
- Zhang, Peng,Wang, Haitao,Liu, Huimin,Li, Min
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- Tuning the self-assembly and photophysical properties of bi-1,3,4-thiadiazole derivatives through electron donor-acceptor interactions and their application in OLEDs
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We report several shape anisotropic molecules that contain two centrally placed 1,3,4-thiadiazole units, which vary from each other with respect to the number and length of the flexible chains at the termini. The number, position and length of the periphe
- Yadav, Abhay Kumar,Pradhan, Balaram,Ulla, Hidayath,Nath, Subrata,De, Joydip,Pal, Santanu Kumar,Satyanarayan,Achalkumar, Ammathnadu S.
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p. 9345 - 9358
(2017/09/29)
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- Synthesis and characterization of bis [ n -(4-benzoyloxy) Benzylidene{ n (n -di-/tri-alkoxy)benzoyl}-hydrazinato]nickel(II) complexes displaying liquid crystalline columnar phases
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A series of materials based on the aroylhydrazinatonickel (II) complex is synthesized and characterized. The molecule in the materials consist of two 4-benzoyloxy-benzene groups and two benzene rings having two or three alkoxy chains containing 6, 8, 10,
- Abser, M. Nurul,Karim, M. Manzurul,Kauser, Abu,Parvin, Rabeya,Molla, M. Elias,Yeasmin, Zenifer,Zoghaib, Wajdi Michel,Al-Rawahi, Zainab,Carboni, Carlo,Al-Saidi, Ghalib
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- Tailoring thermotropic cubic mesophases: Amphiphilic polyhydroxy derivatives
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Novel amphiphilic polyhydroxy compounds [N-(3,4-dialkoxybenzoyl)-1-amino-1-deoxy-D-glucitols (glucamides), N-(3,4-dialkoxybenzoyl)-1-deoxy-1-methylamino-D-glucitols, N-(3,4,5-trialkoxybenzoyl)-1-deoxy-1-methylamino-D-glucitols (N-methylgucamides), 1-benzo
- Borisch, Konstanze,Diele, Siegmar,Goering, Petra,Kresse, Horst,Tschierske, Carsten
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p. 529 - 543
(2007/10/03)
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- The synthesis and mesomorphism of di-, tetra- and hexa-catenar liquid crystals based on 2,2′-bipyridine
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2,2′-Bipyridines are known to coordinate to a wide variety of metal centres. In this paper, liquid-crystalline two-chained (dicatenar), four-chained (tetracatenar) and six-chained (hexacatenar) bipyridines are synthesised and their mesomorphism is described. For the tetracatenar bipyridines, a full homologous series, from tetramethoxy to tetratetradecyloxy, was synthesised, and the phase diagram showed a classic progression from nematic and smectic C phases at short chain length, through a cubic phase to a columnar phase.
- Rowe, Kathryn E.,Bruce, Duncan W.
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p. 331 - 341
(2007/10/03)
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- Discotic liquid crystals of transition metal complexes, 5: Double melting behaviour and double clearing behaviour of discogens
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Two new octa-substituted disk-like bis(β-diketonato)copper(II) complexes, 8C8-Cu and 8C8O-Cu, have been synthesized.The same type of octa-substituted copper complexes, 8C9O-Cu, which was synthesized for the first time by A
- Ohta, Kazuchika,Ema, Hiroshi,Muroki, Hiromitsu,Yamamoto, Iwao,Matsuzaki, Kei
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