Liquid-Crystalline Crown Ether: Forming Columnar Mesophases by Molecular Recognition

1997 ◽  
Vol 36 (10) ◽  
pp. 1119-1121 ◽  
Author(s):  
Jörg Andreas Schröter ◽  
Carsten Tschierske ◽  
Michael Wittenberg ◽  
Joachim Heinz Wendorff
Keyword(s):  
Molecular Recognition ◽  
Crown Ether ◽  
Liquid Crystalline ◽  
Columnar Mesophases

scholarly journals Temperature-Dependent X-Ray Studies of Discotic Hexagonal Columnar Mesophases in Trinuclear Gold(I) Pyrazolate Complex

2021 ◽  
Vol 17 (3) ◽  
pp. 285-294
Author(s):  
Mohamad Azani Abd Khadir Jalani ◽  
Hendrik O. Lintang ◽  
Siew Ling Lee ◽  
Juan Matmin ◽  
Nur Fatiha Ghazalli ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Variable Temperature ◽  
Gold Complex ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Heating And Cooling ◽  
Depth Study ◽  
Columnar Mesophases ◽  
Hexagonal Columnar

Gold(I) pyrazolate complex ([Au3Pz3]C10TEG) has been widely studied due to its interesting liquid crystalline properties by exhibiting the discotic hexagonal columnar arrangement. Generally, the liquid crystalline properties of the gold complex were confirmed based on their differential scanning calorimetry thermogram and polarized optical microscopy (POM) images. However, there is still no in-depth study on the phase transition in liquid crystals of [Au3Pz3]C10TEG especially on its structural change at variable temperature. In this study, the resulting liquid crystalline properties of [Au3Pz3]C10TEG upon being heated and cooled was extensively demonstrated via variable-temperature POM (VT-POM) and small angle X-ray scattering (VT-SAXS). Based on the VT-POM images, it was indicated that [Au3Pz3]C10TEG displayed a fan-shaped texture for typical arrangements of discotic hexagonal columnar of liquid crystals. Moreover, VT-SAXS results was in good agreement with the VT-POM images as it showed that [Au3Pz3]C10TEG might consist of two types of stacking system, which are ordered and disordered hexagonal discotic arrangements. Likewise, VT-SAXS analysis also demonstrated that hexagonal columnar mesophase of [Au3Pz3]C10TEG could be recovered even after the heating and cooling for two cycles.

Supramolecular Liquid-Crystalline Side-Chain Polymers Built through a Molecular Recognition Process by Double Hydrogen Bonds

1995 ◽  
Vol 28 (26) ◽  
pp. 8875-8876 ◽  
Author(s):  
Takashi Kato ◽  
Masahisa Nakano ◽  
Tomonori Moteki ◽  
Toshiyuki Uryu ◽  
Seiji Ujiie
Keyword(s):  
Molecular Recognition ◽  
Hydrogen Bonds ◽  
Liquid Crystalline ◽  
Side Chain ◽  
Recognition Process ◽  
Double Hydrogen

A self-healing supramolecular polymer gel with stimuli-responsiveness constructed by crown ether based molecular recognition

2013 ◽  
Vol 4 (11) ◽  
pp. 3312 ◽  
Author(s):  
Xuzhou Yan ◽  
Donghua Xu ◽  
Jianzhuang Chen ◽  
Mingming Zhang ◽  
Bingjie Hu ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Crown Ether ◽  
Supramolecular Polymer ◽  
Self Healing ◽  
Polymer Gel

Molecular recognition properties of crown ether-functionalized oligothiophenes

1999 ◽  
Vol 102 (1-3) ◽  
pp. 1323-1324 ◽  
Author(s):  
G. Rimmel ◽  
P. Bäuerle
Keyword(s):  
Molecular Recognition ◽  
Crown Ether

A supramolecular polymer formed by the combination of crown ether-based and charge-transfer molecular recognition

2013 ◽  
Vol 4 (4) ◽  
pp. 882-886 ◽  
Author(s):  
Shengyi Dong ◽  
Lingyan Gao ◽  
Jianzhuang Chen ◽  
Guocan Yu ◽  
Bo Zheng ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Molecular Recognition ◽  
Crown Ether ◽  
Supramolecular Polymer

A supramolecular hyperbranched polymer based on molecular recognition between benzo-21-crown-7 and secondary ammonium salt

2014 ◽  
Vol 50 (93) ◽  
pp. 14666-14669 ◽  
Author(s):  
Hui Li ◽  
Xiaodong Fan ◽  
Wei Tian ◽  
Haitao Zhang ◽  
Wanbin Zhang ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Crown Ether ◽  
Ammonium Salt ◽  
Hyperbranched Polymer ◽  
Effective Strategy ◽  
Stimuli Responsive ◽  
Responsive Behavior ◽  
Bold Type

This study provides an effective strategy for preparing a crown ether-based A2-B3-type supramolecular hyperbranched polymer with stimuli-responsive behavior.

Liquid-crystalline solvents as mechanistic probes. 29. Chiral discotic columnar mesophases from the .alpha. and .beta. anomers of penta-O-n-alkanoylglucopyranoses

1988 ◽  
Vol 110 (7) ◽  
pp. 2177-2185 ◽  
Author(s):  
Nancy L. Morris ◽  
Richard G. Zimmermann ◽  
Geoffrey B. Jameson ◽  
Adam W. Dalziel ◽  
P. Matthew. Reuss ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Columnar Mesophases
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