Detection of phase transition of 4-heptyloxy-4 '-n-cyanobiphenyl Langmuir films by Maxwell displacement current and optical second harmonic generation measurement

doi:10.1080/15421400490439824

	Detection of phase transition of 4-heptyloxy-4 '-n-cyanobiphenyl Langmuir films by Maxwell displacement current and optical second harmonic generation measurement
	Tojima, A ; Fujimaki, H ; Ootake, H ; Hiyoshi, R ; Manaka, T ; Iwamoto, M ; Zhong-Can, OY
	2004
会议日期	JUN 30-JUL 05, 2002
会议地点	EDINBURGH, SCOTLAND
关键词	AIR-WATER-INTERFACE ORIENTATIONAL ORDER MONOLAYERS
卷号	412
DOI	10.1080/15421400490439824
页码	1807-1813
英文摘要	We investigated 4-heptyloxy-4'-n-cyanobiphenyl (70CB) Langmuir films by monolayer compression using Maxwell displacement current (MDC) and optical second harmonic generation (SHG) measurements. In the region with a slope in the surface pressure - area (pi-A) isotherm, it was found that the s-s and p-s SH signals were suddenly generated by monolayer compression, although the change of MDC was very gentle. This result reveals the appearance of phase transition accompanying the monolayer structural change from C-infinitynu to Cs-symmetry, due to the shear induced azimuthal in plane reorientation in monolayers.
会议录	MOLECULAR CRYSTALS AND LIQUID CRYSTALS
会议录出版者	TAYLOR & FRANCIS LTD
会议录出版地	ABINGDON
语种	英语
URL标识	查看原文
ISSN号	1058-725X
WOS研究方向	Chemistry ; Crystallography ; Materials Science
内容类型	会议论文
源URL	[http://ir.itp.ac.cn/handle/311006/23725]
专题	SCI会议论文
作者单位	1.Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, Tokyo 1528552, Japan 2.Tsing Hua Univ, Ctr Adv Study, Beijing 10084, Peoples R China 3.Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Tojima, A,Fujimaki, H,Ootake, H,et al. Detection of phase transition of 4-heptyloxy-4 '-n-cyanobiphenyl Langmuir films by Maxwell displacement current and optical second harmonic generation measurement[C]. 见:. EDINBURGH, SCOTLAND. JUN 30-JUL 05, 2002.