1
|
Wang Y, Zhao H, Yang C, Jie J, Dai X, Zhou Q, Liu K, Song D, Su H. Degradation of Cytosine Radical Cations in 2′-Deoxycytidine and in i-Motif DNA: Hydrogen-Bonding Guided Pathways. J Am Chem Soc 2019; 141:1970-1979. [DOI: 10.1021/jacs.8b10743] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Yinghui Wang
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Science, Beijing 100190, P. R. China
- University of Chinese Academy of Science, Beijing 100049, P. R. China
| | - Hongmei Zhao
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Science, Beijing 100190, P. R. China
| | - Chunfan Yang
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Jialong Jie
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Xiaojuan Dai
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Qian Zhou
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Kunhui Liu
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Di Song
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Science, Beijing 100190, P. R. China
| | - Hongmei Su
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| |
Collapse
|
2
|
Zhou Q, Wei Y, Liu X, Chen L, Zhou X, Liu S. Photochemical Reaction Between 1,2-Naphthoquinone and Adenine in Binary Water-Acetonitrile Solutions. Photochem Photobiol 2017; 94:61-68. [DOI: 10.1111/php.12808] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 06/19/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Qiaohui Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale; Department of Chemical Physics; University of Science and Technology of China; Hefei Anhui China
| | - Yaxiong Wei
- Hefei National Laboratory for Physical Sciences at the Microscale; Department of Chemical Physics; University of Science and Technology of China; Hefei Anhui China
| | - Xiang Liu
- Hefei National Laboratory for Physical Sciences at the Microscale; Department of Chemical Physics; University of Science and Technology of China; Hefei Anhui China
| | - Lin Chen
- Hefei National Laboratory for Physical Sciences at the Microscale; Department of Chemical Physics; University of Science and Technology of China; Hefei Anhui China
| | - Xiaoguo Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale; Department of Chemical Physics; University of Science and Technology of China; Hefei Anhui China
- Synergetic Innovation Center of Quantum Information & Quantum Physics; University of Science and Technology of China; Hefei Anhui China
| | - Shilin Liu
- Hefei National Laboratory for Physical Sciences at the Microscale; Department of Chemical Physics; University of Science and Technology of China; Hefei Anhui China
- Synergetic Innovation Center of Quantum Information & Quantum Physics; University of Science and Technology of China; Hefei Anhui China
| |
Collapse
|
3
|
Koley Seth B, Saha A, Haldar S, Chakraborty PP, Saha P, Basu S. Structure dependent selective efficacy of pyridine and pyrrole based Cu(II) Schiff base complexes towards in vitro cytotoxicity, apoptosis and DNA-bases binding in ground and excited state. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 162:463-472. [DOI: 10.1016/j.jphotobiol.2016.07.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 07/06/2016] [Accepted: 07/11/2016] [Indexed: 11/29/2022]
|
4
|
Bose A, Basu S. Effect of phosphate group in switching off electron transfer in different media. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2013.11.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
5
|
Koley Seth B, Ray A, Saha A, Saha P, Basu S. Potency of photoinduced electron transfer and antioxidant efficacy of pyrrole and pyridine based Cu(II)-Schiff complexes while binding with CT-DNA. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 132:72-84. [PMID: 24602815 DOI: 10.1016/j.jphotobiol.2014.02.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 01/18/2014] [Accepted: 02/06/2014] [Indexed: 10/25/2022]
Abstract
Here we report a systematic and comparative study to define a correlation between the structure and function of a series of simple, biologically active small inorganic Schiff base copper complexes for the occurrence of charge transfer phenomenon in calf thymus DNA (CT-DNA) using transient absorption spectroscopy corroborated with magnetic field effect. Four copper(II) Schiff base complexes with differently substituted heterocyclic ligands with antioxidant activity have been used. The binding constants of the order of ∼ 10(4) support the moderate binding affinity of the complexes towards CT-DNA. The methyl-substituted pyrrole complex shows maximum binding affinity (Kb: 8.33 × 10(4)) compared to others. The occurrence of photoinduced electron transfer (PET) from CT-DNA to pyrrole containing complexes has been confirmed by identifying the corresponding transient radical ions whereas the extent of PET with pyridine substituted complexes is too small to be observed. The increase of the yield of radical ions in presence of magnetic field depicts that the initial spin correlation in geminate radical ion pair is triplet. The difference between experimental and calculated B½ values, the measure of hyperfine interactions (HFI) present in the system, arises due to hole hopping through intrastrand and interstrand DNA bases. The unsubstituted pyrrole complexes cleave DNA much more than the methyl-substituted one. Therefore, the probability of intrastrand superexchange increases with methyl-substituted complexes, that reduces the rate of hole hopping and hence the B½ value.
Collapse
Affiliation(s)
- Banabithi Koley Seth
- Chemical Science Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India
| | - Aurkie Ray
- Chemical Science Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India
| | - Arpita Saha
- Crystallography and Molecular Biology, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India
| | - Partha Saha
- Crystallography and Molecular Biology, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India
| | - Samita Basu
- Chemical Science Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India.
| |
Collapse
|
6
|
Liu X, Chen L, Zhou Q, Zhou X, Liu S. Laser Flash Photolysis on Electron Transfer Reactions between 1,8‐Dihydroxyanthraquinone with Adenine and Cytosine. CHINESE J CHEM PHYS 2013. [DOI: 10.1063/1674-0068/26/05/498-503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
7
|
Electron transfer reactions between 1,8-dihydroxyanthraquinone and pyrimidines: A laser flash photolysis study. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.07.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
8
|
Pal K, Grampp G, Kattnig DR. Solvation dynamics of a radical ion pair in micro-heterogeneous binary solvents: a semi-quantitative study utilizing MARY line-broadening experiments. Chemphyschem 2013; 14:3389-99. [PMID: 23939826 DOI: 10.1002/cphc.201300435] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 07/15/2013] [Indexed: 11/10/2022]
Abstract
This work aims at elucidating the mechanism of solvation of a radical ion pair (RIP) in a micro-heterogeneous binary solvent mixture using magnetically affected reaction yield (MARY) spectroscopy. For the exciplex-forming 9,10-dimethylanthracene/N,N-dimethylaniline system a comparative, composition-dependent MARY line-broadening study is undertaken in a heterogeneous (toluene/dimethylsulfoxide) and a quasi-homogenous (propyl acetate/butyronitrile) solvent mixture. The half-saturation field extrapolated to zero-quencher concentration, B(1/2), and the self-exchange rate constants are analyzed in the light of solvent dynamical properties of the mixtures and a dielectric continuum solvation model. The dependence of B(1/2) on the solvent composition is explained by cluster formation giving rise to shortened RIP lifetimes. The results are in qualitative agreement with the continuum solvation model suggesting that it could serve as a theoretical basis for quantitative modeling.
Collapse
Affiliation(s)
- Kunal Pal
- Institute of Physical and Theoretical Chemistry, Graz University of Technolgy, Stremayrgasse 9/Z2, A-8010 Graz (Austria).
| | | | | |
Collapse
|
9
|
Zhang Q, Piro B, Ramsay S, Noël V, Reisberg S, Pham MC. Electrochemical investigation of interactions between quinone derivatives and single stranded DNA. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.08.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
10
|
Li K, Wang M, Wang J, Zhu R, Sun D, Sun X, Wang SL. Photoionization of Oxidized Coenzyme Q in Microemulsion: Laser Flash Photolysis Study in Biomembrane-like System. Photochem Photobiol 2012; 89:61-7. [DOI: 10.1111/j.1751-1097.2012.01180.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
11
|
Liu KH, Wu LD, Zou XR, Yang W, Du Q, Su HM. Photochemical Hydrogen Abstraction and Electron Transfer Reactions of Tetrachlorobenzoquinone with Pyrimidine Nucleobases. CHINESE J CHEM PHYS 2011. [DOI: 10.1088/1674-0068/24/05/580-585] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|