Induced Circular Dichroism of Anionic Porphyrin TPPS Aggregates in DNA Solutions

doi:10.1295/polymj.PJ2009095

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	Induced Circular Dichroism of Anionic Porphyrin TPPS Aggregates in DNA Solutions
	Liao, Bo 1,2; He, Benqiao 1; Liu, Ruigang 1; Huang, Yong 1,3
刊名	POLYMER JOURNAL
	2009
卷号	41 期号:9 页码:739-743
关键词	Porphyrin Dna Chirality
ISSN号	0032-3896
DOI	10.1295/polymj.PJ2009095
英文摘要	Induced circular dichroism (CD) of achiral anionic tetrakis (4-sulfonatophenyl) porphine (TPPS) in polyanionic DNA solutions was investigated. Induced CD signals of the anionic TPPS aggregates in both cholesteric liquid crystal DNA solutions and isotropic DNA solutions are all observed within an appropriate pH range. When the pH value is less than 5, the induced CD signals of TPPS are split in the isotropic DNA solutions, which should result from the helical arrangement of TPPS molecules within the TPPS aggregates with L- or D-type helix. The induced CD signals without splitting of TPPS aggregates in the cholesteric liquid crystal DNA solutions should result from the helical arrangement of the aggregates like molecule screwing along the cholesteric helix axis. When the pH value is higher than 5.2, no induced CD can be observed in the isotropic solutions and the cholesteric liquid crystal DNA solutions, because the electrostatic repulsion force between the non-protonated TPPS molecules and the bases on DNA chains prevents the chiral induction. The mechanism of the different induced CD signals of TPPS aggregates in the DNA solutions is discussed.
语种	英语
出版者	SOC POLYMER SCIENCE JAPAN
WOS记录号	WOS:000272369700008
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/67837]
专题	中国科学院化学研究所
通讯作者	Huang, Yong
作者单位	1.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Beijing Natl Lab Mol Sci, Joint Lab Polymer Sci & Mat,Inst Chem, Beijing 100080, Peoples R China 2.Hunan Univ Sci & Technol, Sch Chem & Chem Engn, Xiangtan 411201, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Chem, Lab Cellulose & Lingnocellulos Chem, Guangzhou 510650, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Liao, Bo,He, Benqiao,Liu, Ruigang,et al. Induced Circular Dichroism of Anionic Porphyrin TPPS Aggregates in DNA Solutions[J]. POLYMER JOURNAL,2009,41(9):739-743.
APA	Liao, Bo,He, Benqiao,Liu, Ruigang,&Huang, Yong.(2009).Induced Circular Dichroism of Anionic Porphyrin TPPS Aggregates in DNA Solutions.POLYMER JOURNAL,41(9),739-743.
MLA	Liao, Bo,et al."Induced Circular Dichroism of Anionic Porphyrin TPPS Aggregates in DNA Solutions".POLYMER JOURNAL 41.9(2009):739-743.