ICCAS OpenIR
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
2008-07-15
Source PublicationLANGMUIR
ISSN0743-7463
Volume24Issue:14Pages:7200-7207
AbstractThe 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.
DOI10.1021/la703703e
Indexed BySCI
Language英语
WOS IDWOS:000257468300026
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65016
Collection中国科学院化学研究所
Corresponding AuthorChen, Penglei
AffiliationChinese Acad Sci, CAS Key Lab Colloid Interface & Chem Thermodynam, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
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.
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