Photochemical Phase Transition Behavior of Highly Birefringent Azotolane Liquid-Crystalline Polymer Films:  Effects of the Position of the Tolane Group and the Donor−Acceptor Substituent in the Mesogen

2006 ◽  
Vol 39 (1) ◽  
pp. 145-152 ◽  
Author(s):  
Kunihiko Okano ◽  
Atsushi Shishido ◽  
Tomiki Ikeda
Keyword(s):  
Phase Transition ◽  
Polymer Films ◽  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Phase Transition Behavior ◽  
Acceptor Substituent ◽  
Transition Behavior ◽  
Donor Acceptor

Optically controlled image storage in azobenzene liquid-crystalline polymer films

1999 ◽  
Vol 68 (6) ◽  
pp. 1117-1120 ◽  
Author(s):  
C. Wang ◽  
H. Fei ◽  
J. Xia ◽  
Y. Yang ◽  
Z. Wei ◽  
...  
Keyword(s):  
Polymer Films ◽  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Image Storage

Hydrogen bonding liquid crystalline benzoic acids with alkylthio groups: phase transition behavior and insights into the cybotactic nematic phase

2017 ◽  
Vol 41 (14) ◽  
pp. 6514-6522 ◽  
Author(s):  
Yuki Arakawa ◽  
Yukito Sasaki ◽  
Kazunobu Igawa ◽  
Hideto Tsuji
Keyword(s):  
Phase Transition ◽  
Hydrogen Bonding ◽  
Nematic Phase ◽  
Liquid Crystalline ◽  
Benzoic Acids ◽  
Phase Transition Behavior ◽  
Transition Behavior

A novel class of hydrogen bonding liquid crystalline benzoic acids with alkylthio groups was established and their phase transition behavior was investigated in detail.

Axis-Selective Photo-Fries Rearrangement and Photoinduced Molecular Reorientation in Liquid Crystalline Polymer Films

2011 ◽  
Vol 44 (14) ◽  
pp. 5736-5742 ◽  
Author(s):  
Nobuhiro Kawatsuki ◽  
Takuya Neko ◽  
Mami Kurita ◽  
Akinobu Nishiyama ◽  
Mizuho Kondo
Keyword(s):  
Polymer Films ◽  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Molecular Reorientation ◽  
Fries Rearrangement

Phase Transition Behavior of Main Chain Nematic Liquid-Crystalline Polymers Based on 2-methyl-1,4-bis[4-(4-pentenyloxy)benzoyl]hydroquinone and 2-tert-butyl-1,4-bis[4-(4-pentenyloxy)benzoyl]hydroquinone

2012 ◽  
Vol 1403 ◽  
Author(s):  
Christain Melchert ◽  
M. Behl ◽  
A. Lendlein
Keyword(s):  
Phase Transition ◽  
Nematic Phase ◽  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Phase Transition Behavior ◽  
Scanning Calorimetry ◽  
Thermal Stabilities ◽  
Crystalline Polymers ◽  
Transition Behavior ◽  
X Ray Scattering

ABSTRACTThe control of phase transition behavior in liquid crystalline polymers could enable potential application in the field of actuators and sensors by enabling a higher actuator performance of liquid crystalline elastomers (LCE). In this context the phase transition behavior of siloxane based liquid crystalline copolymers synthesized from 1,1,3,3-tetramethyldisiloxane, 2-methyl-1,4-bis[4-(4-pentenyloxy)benzoyl]hydroquinone (M-MeHq), and 2-tert-butyl-1,4-bis[4-(4-pentenyloxy)benzoyl]hydroquinone (M-tBHq) was explored. The selected monomers provided different thermal stabilities of the nematic phase, while the non-flexible siloxane spacer suppressed a smectic phase. The mesogenic properties were studied by means of differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and wide angle X-ray scattering (WAXS). With increasing fraction of M-MeHq the nematic phase of the copolymer was stabilized and a tailoring of relatively low TNI was achieved.

Photoresponsive Behavior of Crosslinked Liquid-Crystalline Polymer Films with a Different Content of an Azobenzene Moiety

2010 ◽  
Vol 529 (1) ◽  
pp. 53-59 ◽  
Author(s):  
Aki Shimamura ◽  
Tomohiro Hiraoka ◽  
Mizuho Kondo ◽  
Shoichi Kubo ◽  
Jun-ichi Mamiya ◽  
...  
Keyword(s):  
Polymer Films ◽  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Azobenzene Moiety ◽  
Different Content
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