ICCAS OpenIR
Acidichromism and chiroptical switch based on the self-assembly of a cyanine dye on the PLGA/PAH LbL film
Zhang, Guocheng; Liu, Minghua
2009
Source PublicationJOURNAL OF MATERIALS CHEMISTRY
ISSN0959-9428
Volume19Issue:10Pages:1471-1476
AbstractThe self-assembly and functionalization of a cyanine dye (3,3'-disulfopropyl-9-methylselenacarbocyanine, SeCy) on the layer-by-layer (LbL) assembled poly(L-glutamic acid) (PLGA) film was investigated. PLGA was assembled into an LbL film through the alternative deposition with poly(allylamine hydrochloride) (PAH). The cyanine dye was self-assembled on this film through loading from the aqueous solution. When an appropriate aqueous solution of the cyanine dye (0.1 mM, pH = 3.5) was used, the cyanine dye could be easily assembled on the PLGA/PAH film and the dye aggregated and stacked in a helical way in the film. Induced circular dichroism (ICD) of the achiral dye was observed for such dye-loaded LbL films. Upon exposing the dye loaded film to HCl gas, the color of the film changed and the ICD of the dye disappeared. Interestingly, both the color and ICD could be recovered again by subsequently exposing the film to water vapor. The process was repeated more than 20 times. Thus, both acidichromism and a chiroptical switch were realized in the complex film. A mechanism related to the cooperative loading of the dye into the LbL film, dye aggregation, conformational change of PLGA and their relationship with the supramolecular chirality of the film was discussed. The work provided an easy way to realize the chiroptical switch in the film using a supramolecular control over the dye assembly.
DOI10.1039/b817782a
Indexed BySCI
Language英语
WOS IDWOS:000263715300014
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66244
Collection中国科学院化学研究所
Corresponding AuthorLiu, Minghua
AffiliationChinese Acad Sci, BNLMS, CAS Key Lab Colloid Interface & Chem Thermodynam, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Guocheng,Liu, Minghua. Acidichromism and chiroptical switch based on the self-assembly of a cyanine dye on the PLGA/PAH LbL film[J]. JOURNAL OF MATERIALS CHEMISTRY,2009,19(10):1471-1476.
APA Zhang, Guocheng,&Liu, Minghua.(2009).Acidichromism and chiroptical switch based on the self-assembly of a cyanine dye on the PLGA/PAH LbL film.JOURNAL OF MATERIALS CHEMISTRY,19(10),1471-1476.
MLA Zhang, Guocheng,et al."Acidichromism and chiroptical switch based on the self-assembly of a cyanine dye on the PLGA/PAH LbL film".JOURNAL OF MATERIALS CHEMISTRY 19.10(2009):1471-1476.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Guocheng]'s Articles
[Liu, Minghua]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Guocheng]'s Articles
[Liu, Minghua]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Guocheng]'s Articles
[Liu, Minghua]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.