Interfacial assembly of an achiral zinc phthalocyanine at the air/water interface: A surface pressure dependent aggregation and supramolecular chirality

doi:10.1021/la703703e

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	Interfacial assembly of an achiral zinc phthalocyanine at the air/water interface: A surface pressure dependent aggregation and supramolecular chirality
	Qiu, Yunfeng; Chen, Penglei; Liu, Minghua
刊名	LANGMUIR
	2008-07-15
卷号	24 期号:14 页码:7200-7207
ISSN号	0743-7463
DOI	10.1021/la703703e
英文摘要	The aggregation and supramolecular chirality of the interfacial assemblies of an achiral phthalcyanine derivative, zinc 2,3,9,10,16,17,23,24-octakis(octyloxy)-29H,3 1H-phthaloxyanine (ZnPc), were investigated, and a surface pressure dependent behavior was observed. It was found that ZnPc could be spread as a Langmuir film on water surface and transferred onto solid substrates by the horizontal lifting method. The compound formed mixed J- and H-aggregates in the transferred Langmuir-Blodgett (LB) films. Deconvolution of the broaden Q-band revealed three main components of the spectra, which corresponded to H- and J-aggregates and medium transition aggregates, whose relative contents could be modulated by the surface pressure at which the films were transferred. On the other hand, the transferred LB films composed of these aggregates showed Cotton effects in circular dichroism spectra when the floating film was compressed over a certain surface pressure although the compound itself was achiral. The cooperative arrangement of the macrocylic ring in a helical manner through the interfacial organization was suggested to be responsible for such optical activity in the LB films. A possible explanation based on the cooperative arrangement of the ZnPc building blocks in a helical sense stacking in the aggregates was proposed.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000257468300026
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/65015]
专题	中国科学院化学研究所
通讯作者	Chen, Penglei
作者单位	Chinese Acad Sci, CAS Key Lab Colloid Interface & Chem Thermodynam, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Qiu, Yunfeng,Chen, Penglei,Liu, Minghua. Interfacial assembly of an achiral zinc phthalocyanine at the air/water interface: A surface pressure dependent aggregation and supramolecular chirality[J]. LANGMUIR,2008,24(14):7200-7207.
APA	Qiu, Yunfeng,Chen, Penglei,&Liu, Minghua.(2008).Interfacial assembly of an achiral zinc phthalocyanine at the air/water interface: A surface pressure dependent aggregation and supramolecular chirality.LANGMUIR,24(14),7200-7207.
MLA	Qiu, Yunfeng,et al."Interfacial assembly of an achiral zinc phthalocyanine at the air/water interface: A surface pressure dependent aggregation and supramolecular chirality".LANGMUIR 24.14(2008):7200-7207.