Photoresponsive, liquid

Liquid Crystal Photonics Opto-photochemical Effects in Photoresponsive Liquid Crystals... 

T. Ikeda, S. Hawegawa, T. Sasaki, T. Miyamoto, M-P. Lin, and S. Tazuke, Photoresponsive liquid crystals prepared frompoly(biphenylyl vinyl ether-a/t-maleic anhydride), Makromol. Chem. 192, 215-221 (1991). 

V.K.S. Hsiao, Y.B. Zheng, B.K. Juluri, T.J. Huang, Light-driven plasmonic switches based on Au nanodisk arrays and photoresponsive liquid crystals. Adv. Mater. 20, 3528-3532 (2008)... 

N.S.S. Kumar, S. Abraham, K.V. Ratheesh, N. Tamaoki, S. Purumi, S. Das, Indane-1,3-Dione and cholesterol containing butadiene derivatives photoresponsive liquid crystalline glasses for imaging applications. J. Photochem. Photobiol. A Chem 207, 73-78 (2009)... 

Abstract The combination of nanomaterials and ordered deformable soft materials is emerging as an enabling system in nanoscience and nanotechnology. In this context, nanomaterial functionalized photoresponsive liquid crystalline polymers are very promising and versatile systems due to their dynamic function. Moreover, the unique characteristic of nanomaterials combined with the mechanical, self-organizing and stimuli-responsive properties of deformable liquid crystalline polymers opens up new and exciting possibilities. In this chapter, we present recent developments of photodeformable behaviors of liquid crystalline polymers functionalized with nanomaterials. The main emphasis revolves around how the physicochemical properties of different nanomaterials modulate the reversible photomechanical behaviors of liquid crystalline polymers and their potential application in devices such as optically controlled switches and soft actuators. 

In addition to investigating ferroelectric liquid crystalline conjugated polymers with dynamic switching functionahties under an electric field, our group has also developed photoresponsive liquid crystalline conjugated polymers with dynamic switching of linearly and circularly polarized luminescence. This was accomplished through the use of a photoisomerizable moiety in the polymer side chain. 

A new, low-Tg siloxane thermoplastic elastomer with a functionalizable backbone was recently synthesized via sequential anionic ring-opening polymerization and coupling. The attachment of a photoresponsive liquid crystal led to a rapid thermoplastic photoactuator. Polystyrene was used as a hard glassy end block, and poly(vinylmethylsiloxane) served as the soft middle segment in this polystyrene-b-poly(vinylmethylsiloxane)-b-polystyrene ABA triblock copolymer. 

Hafiz, HR. and Nakanishi, F. (2003) Photoresponsive liquid crystal display driven by new photochromic azobenzene-based Langmuir-Blodgett films. Nanotechnology, 14, 649-654. 

Another example of photoresponsive liquid crystalline material based on halogen bonding appeared recently [61]. The idea here was to extend the concept of photoinduced order-disorder phase transition (Fig. Ic) from conventional photoresponsive LCs to halogen-bonded supramolecular complexes. To do this, the authors complexed azopyridines (AzPy) and molecular dihalogens (Fig. 11) in a... 

Zhang X, Zhang J, Sun Y, Yang H, Yu H. Erasable thin-film optical diode based on a photoresponsive liquid crystal polymer. Nanoscale 2014 6 3854-60. 

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