Hydrogen Bonding Effects on the Photophysical Properties of 2,3-dihydro-3-keto-1H-pyrido[3,2,1-kl]phenothiazine
文献类型：期刊论文
| 作者 | Yang, Song-qiu1,2; He, Guo-zhong1 |
| 刊名 | chinese journal of chemical physics
 |
| 出版日期 | 2012-06-27 |
| 卷号 | 25期号:3页码:254-260 |
| 关键词 | 2 Time-dependent density functional theory Femtosecond transient absorption spectroscopy Hydrogen bonding effect 3-dihydro-3-keto-1H-pyrido[3 2 1-kl]phenothiazine |
| 产权排序 | 1,1 |
| 通讯作者 | 羊送球 |
| 英文摘要 | time-dependent density functional theory (tddft) and femtosecond transient absorption spectroscopy were used to investigate the photophysical properties of 2,3-dihydro-3-keto-1h-pyrido[3,2,1-kl]phenothiazine (ptz4) and 3-keto-1h-pyrido[3,2,1-kl]phenothiazine (ptz5). the calculated results obtained from tddft suggest that the red-shifts of the absorption spectra of these two fluorophores in methanol are due to the formation of hydrogen-bonded complexes at the ground state. four conformers of ptz4 were obtained by tddft. the two fluorescence peaks of ptz4 in tetrahydrofuran (thf) came from the ict states of the four conformers. the fluorescence of ptz4 in thf showed a dependence on the excitation wavelength because of butterfly bending. the excited state dynamics of ptz4 in thf and methanol were obtained by transient absorption spectroscopy. the lifetime of the excited ptz4 in methanol was 53.8 ps, and its relaxation from the le state to the ict state was completed within several picoseconds. the short lifetime of excited ptz4 in methanol was due to the formation of out-of-plane model hydrogen bonds between ptz4 and methanol at the excited state. |
| 学科主题 | 物理化学 |
| 类目[WOS] | physics, atomic, molecular & chemical |
| 研究领域[WOS] | physics |
| 关键词[WOS] | intramolecular charge-transfer ; excited-state dynamics ; proton-transfer ; radiationless deactivation ; molecular-mechanism ; ultrafast dynamics ; singlet-state ; fluorescence ; alcohols ; flavin |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000306535500002 |
| 公开日期 | 2013-10-11 |
| 源URL | [http://159.226.238.44/handle/321008/118390]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Song-qiu,He, Guo-zhong. Hydrogen Bonding Effects on the Photophysical Properties of 2,3-dihydro-3-keto-1H-pyrido[3,2,1-kl]phenothiazine[J]. chinese journal of chemical physics,2012,25(3):254-260. |
| APA | Yang, Song-qiu,&He, Guo-zhong.(2012).Hydrogen Bonding Effects on the Photophysical Properties of 2,3-dihydro-3-keto-1H-pyrido[3,2,1-kl]phenothiazine.chinese journal of chemical physics,25(3),254-260. |
| MLA | Yang, Song-qiu,et al."Hydrogen Bonding Effects on the Photophysical Properties of 2,3-dihydro-3-keto-1H-pyrido[3,2,1-kl]phenothiazine".chinese journal of chemical physics 25.3(2012):254-260. |
入库方式： OAI收割
来源：大连化学物理研究所
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