ICCAS OpenIR
Induced Circular Dichroism of Anionic Porphyrin TPPS Aggregates in DNA Solutions
Liao, Bo1,2; He, Benqiao1; Liu, Ruigang1; Huang, Yong1,3
2009
Source PublicationPOLYMER JOURNAL
ISSN0032-3896
Volume41Issue:9Pages:739-743
AbstractInduced 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.
KeywordPorphyrin Dna Chirality
DOI10.1295/polymj.PJ2009095
Indexed BySCI
Language英语
WOS IDWOS:000272369700008
PublisherSOC POLYMER SCIENCE JAPAN
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67838
Collection中国科学院化学研究所
Corresponding AuthorHuang, Yong
Affiliation1.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
Recommended Citation
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.
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