Facile fabrication of polymer-dispersed liquid crystal films via nucleophile-initiated thiol-ene click reaction

作者：Shi, Zhiqing; Guan, Yu; Wang, Fei; Zhang, Yuliang; Deng, Feifei; Liu, Yawei; Wang, Yinghan^*

来源：Liquid Crystals, 2017, 44(11): 1695-1700.

DOI：10.1080/02678292.2017.1308023

• Click reaction
• nitrogen-centred nucleophile
• temperature
• PDLC
• electro-optical properties

Nucleophile-initiated thiol-ene click reaction was employed to prepare polymer-dispersed liquid crystal (PDLC) films initiated by 4-dimethylaminopyridine (DMAP). The PDLC films were prepared in different temperature. It is found that the reaction temperature has a big influence on the electro-optical properties of PDLC films and 60 degrees C is the optimal temperature to fabricate PDLC film which has high ON state transmittance (T-on) and low OFF state transmittance (T-off). UV-Visible spectrophotometer, scanning electron microscopy and polarised optical microscope were employed to explore the obtained PDLC films. Nucleophile-initiated thiol-ene click reaction, without UV-light, probably provides a new pathway to prepare PDLC films. @@@ [GRAPHICS] @@@ .

• 出版日期2017
• 单位四川大学