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Fabrication of chiral Langmuir-Schaefer films from achiral TPPS and amphiphiles through the adsorption at the air/water interface
Zhang, L; Lu, Q; Liu, MH
2003-03-20
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY B
ISSN1520-6106
Volume107Issue:11Pages:2565-2569
AbstractComplex monolayer formation between three amphiphiles: cetyltrimethylammonium bromide (CTAB), octadecylamine (ODA), dioctadecyldimethylammonium bromide (DOAB), and tetrakis(4-sulfonatophenyl)-porphine (TPPS) at the air/water interface were investigated. It was found that TPPS could form complex monolayers with the amphiphiles at the air/water interface through the electrostatic interaction at pH = 3.1. The complex monolayer could be deposited onto solid substrates using a Langmuir-Schaefer (LS) transfer method to form well-defined LS films. Although TPPS existed as a monomer in aqueous solution at pH 3.1, it could form a J-aggregate in the complex monolayers with the amphiphiles. It is interesting to note that the LS films showed strong split Cotton effect in the circular dichroism (CD) spectra although TPPS and the amphiphiles are all achiral. It was found that only if the chirality of the LS film was related to the J-aggregate formation of TPPS in the LS film, i.e., only when the TPPS formed J-aggregate, can a CD signal be detected. Further investigation through AFM measurements revealed that the nanothread formed in the LS films was responsible for the chirality of the LS film.
DOI10.1021/jp026621r
Indexed BySCI
Language英语
WOS IDWOS:000181599400020
PublisherAMER CHEMICAL SOC
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/80308
Collection中国科学院化学研究所
Corresponding AuthorLiu, MH
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Lab Colloid & Interface Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zhang, L,Lu, Q,Liu, MH. Fabrication of chiral Langmuir-Schaefer films from achiral TPPS and amphiphiles through the adsorption at the air/water interface[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2003,107(11):2565-2569.
APA Zhang, L,Lu, Q,&Liu, MH.(2003).Fabrication of chiral Langmuir-Schaefer films from achiral TPPS and amphiphiles through the adsorption at the air/water interface.JOURNAL OF PHYSICAL CHEMISTRY B,107(11),2565-2569.
MLA Zhang, L,et al."Fabrication of chiral Langmuir-Schaefer films from achiral TPPS and amphiphiles through the adsorption at the air/water interface".JOURNAL OF PHYSICAL CHEMISTRY B 107.11(2003):2565-2569.
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