Study of Photomodulation of PDLC Membrane Based on Azo-LC

Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (18): 1921-1924. Previous Articles Next Articles

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基于偶氮液晶的PDLC膜光调制研究

韩国志*^{,1,2，刘学文¹，马鸿飞¹}

(¹南京工业大学理学院应用化学系南京 210009)
(²东南大学生物电子学国家重点实验室南京 210096)

投稿日期:2009-12-30 修回日期:2010-02-20 发布日期:2010-05-18
通讯作者: 韩国志 E-mail:han@njut.edu.cn
基金资助:
国家自然科学基金;南京工业大学青年学术基金

Study of Photomodulation of PDLC Membrane Based on Azo-LC

Han Guozhi*^{,1,2 Liu Xuewen¹ Ma Hongfei¹}

(¹College of Science, Nanjing University of Technology, Nanjing 210009)
(²State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096)

Received:2009-12-30 Revised:2010-02-20 Published:2010-05-18

Abstract

Polymer dispersed liquid crystals (PDLC) membrane was prepared by solvent method based on PS and photosensitive nematic LCs (5CB＋BMAB). Optical switch of the PDLC membrane was realized through photoinduced phase transition of azo-LC BMAB. Experimental results indicated that liquid crystals molecule assembled as double-pole configuration inside PDLC membrane. Temperature range for optical control was between 19 and 36 ℃. Transmittance of the membrane increased from 6% to 93% after irradiated by UV light around 360 nm. With the same work distance, photomodulation time was related with diameter of micropores in PDLC membrane. At the same concentration of liquid crystal, photomodulation time would increase with diameter of micropore reduced.

Key words: azo-LCs, PS, PDLC, photoinduced phase transition, photomodulation

Cite this article

HAN Guo-Zhi, LIU Xue-Wen, MA Hong-Fei. Study of Photomodulation of PDLC Membrane Based on Azo-LC[J]. Acta Chimica Sinica, 2010, 68(18): 1921-1924.

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基于偶氮液晶的PDLC膜光调制研究

Study of Photomodulation of PDLC Membrane Based on Azo-LC

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