| Ruthenium(ii) terpyridyl complexes exhibiting dna photocleavage: the role of the substituent on monodentate ligand | |
| Zhou, Qian-Xiong1,2; Yang, Fan3; Lei, Wan-Hua1; Chen, Jing-Rong1; Li, Chao1; Hou, Yuan-Jun1; Ai, Xi-Cheng3; Zhang, Jian-Ping3; Wang, Xue-Song1; Zhang, Bao-Wen1 | |
| 刊名 | Journal of physical chemistry b
 |
| 2009-08-20 | |
| 卷号 | 113期号:33页码:11521-11526 |
| ISSN号 | 1520-6106 |
| DOI | 10.1021/jp905506w |
| 通讯作者 | Wang, xue-song(xswang@mail.ipc.ac.cn) |
| 英文摘要 | Five ruthenium(ii) complexes, [ru(ii)(tpy)(dppz)(py-r)](2+) (tpy = 2,2':6',2 ''-terpyridine; dppz = dipyrido[3,2-a:2',3'-c]phenazine; py-r = 4-substituied pyridine; r = n(ch(3))(2), nh(2), och(3), h, no(2)), were synthesized; and the substituent effects oil the photophysical property, electrochemical property, dna binding, and dna photocleavage of the complexes were examined carefully. increasing the electron-donating ability of the substituent r from no to n(ch(3))(2) leads to a cathodic shift of ru-based oxidation potential, a red shift of the (1)mlct absorption at room temperature and the (3)mlct emission at 77 k, and enhancement of the dna photocleavage ability. dna photocleavage control experiments and the epr spin-trapping technique confirm that the photocleavage abilities of the complexes originate from (1)o(2) production. time-resolved absorption spectra suggest that the (3)mlct lifetime plays ail important role in the photosensitized (1)o(2) generation of these complexes, which in turn depends strongly on the electron-donating ability of the substituent r. by changing the substituent of pyridine from the electron-withdrawing to the electron-donating group, the photocleavage abilities of the complexes varied from inactive to active, providing a new strategy for the development of dna photocleavers of tpy-based ru(ii) complexes. |
| WOS关键词 | PHOTOINDUCED ELECTRON-TRANSFER ; SINGLET OXYGEN ; TRIDENTATE LIGANDS ; EXCITED-STATES ; DIPYRIDOPHENAZINE COMPLEXES ; BIS(TERPYRIDINE) COMPLEXES ; BINDING PROPERTIES ; REDOX PROPERTIES ; METAL-COMPLEXES ; RU(II) |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Physical |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000268907600022 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2404205 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wang, Xue-Song |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Photochem Convers & Optoelect Mat, Tech Inst Phys & Chem, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Qian-Xiong,Yang, Fan,Lei, Wan-Hua,et al. Ruthenium(ii) terpyridyl complexes exhibiting dna photocleavage: the role of the substituent on monodentate ligand[J]. Journal of physical chemistry b,2009,113(33):11521-11526. |
| APA | Zhou, Qian-Xiong.,Yang, Fan.,Lei, Wan-Hua.,Chen, Jing-Rong.,Li, Chao.,...&Zhang, Bao-Wen.(2009).Ruthenium(ii) terpyridyl complexes exhibiting dna photocleavage: the role of the substituent on monodentate ligand.Journal of physical chemistry b,113(33),11521-11526. |
| MLA | Zhou, Qian-Xiong,et al."Ruthenium(ii) terpyridyl complexes exhibiting dna photocleavage: the role of the substituent on monodentate ligand".Journal of physical chemistry b 113.33(2009):11521-11526. |
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