OPTICAL 2ND-HARMONIC GENERATION FROM LANGMUIR-BLODGETT-FILMS OF AN   ASYMMETRICALLY SUBSTITUTED PHTHALOCYANINE

doi:10.1021/j100018a030

CORC > 北京大学 > 化学与分子工程学院

	OPTICAL 2ND-HARMONIC GENERATION FROM LANGMUIR-BLODGETT-FILMS OF AN ASYMMETRICALLY SUBSTITUTED PHTHALOCYANINE
	LIU, YQ ; XU, Y ; ZHU, DB ; WADA, T ; SASABE, H ; ZHAO, XS ; XIE, XM
刊名	journal of physical chemistry
	1995
关键词	2ND-HARMONIC GENERATION THIN-FILMS METAL NONLINEARITIES DERIVATIVES BEHAVIOR DYES
DOI	10.1021/j100018a030
英文摘要	Phthalocyanine, which is a pi-conjugated macrocyclic molecule, usually shows third-harmonic generation. After chemical modification by attaching donor-acceptor substituents to its peripheral ring, intramolecular charge transfer through the pi-conjugated system is created. This makes phthalocyanine a second-harmonic-generation (SHG) active molecule. The Langmuir-Blodgett (L-B) film technique offers a way to create noncentrosymmetric structure, which in principle is a requirement for SHG materials. Here we report the L-B film fabrication of an asymmetrically substituted phthalocyanine consisting of three tert-butyl groups as donor substituents and one nitro group as an acceptor substituent, namely, nitrotri-tert-butylphthalocyanine both in pristine form and in alternating form alternating with either tetra-tert-butylphthalocyanine or arachidic acid. SHG from these L-B films was investigated, We find that the tilt angle of such phthalocyanine molecules on the substrate is almost the same as that at the air-water interface, indicating that the configuration of these molecules was maintained during the deposition process. We demonstrate an alternative strategy for improving the SHG behavior in L-B films. A nearly quadratic dependence of second-harmonic intensity on the number of bilayers is observed up to nine bilayers.; Chemistry, Physical; SCI(E); 65; ARTICLE; 18; 6957-6960; 99
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/402954]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	LIU, YQ,XU, Y,ZHU, DB,et al. OPTICAL 2ND-HARMONIC GENERATION FROM LANGMUIR-BLODGETT-FILMS OF AN ASYMMETRICALLY SUBSTITUTED PHTHALOCYANINE[J]. journal of physical chemistry,1995.
APA	LIU, YQ.,XU, Y.,ZHU, DB.,WADA, T.,SASABE, H.,...&XIE, XM.(1995).OPTICAL 2ND-HARMONIC GENERATION FROM LANGMUIR-BLODGETT-FILMS OF AN ASYMMETRICALLY SUBSTITUTED PHTHALOCYANINE.journal of physical chemistry.
MLA	LIU, YQ,et al."OPTICAL 2ND-HARMONIC GENERATION FROM LANGMUIR-BLODGETT-FILMS OF AN ASYMMETRICALLY SUBSTITUTED PHTHALOCYANINE".journal of physical chemistry (1995).