Photodimerization Kinetics of a Styrylquinoline Derivative in Langmuir-Blodgett Monolayers Monitored by Second Harmonic Generation
文献类型：期刊论文
| 作者 | Ma, Yingxue1,2; Xie, Yu3; Lin, Lu4; Zhang, Li1; Liu, Minghua1; Guo, Yuan1,2; Lan, Zhenggang3; Lu, Zhou1,2 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2017-10-26 |
| 卷号 | 121期号:42页码:23541-23550 |
| 英文摘要 | To explore the influence of surface packing densities on the interfacial photochemical kinetics, the surface-selective second harmonic generation (SHG) technique was used to investigate the kinetics of two-photon induced [2 + 2] photocycloadditions of a styrylquinoline alkoxy derivative within the Langmuir-Blodgett (LB) monolayers. The laser power dependence experiment revealed that this interfacial photodimerization is a first-order reaction, which implies that the photoexcitation is the rate-limiting step. Interestingly, a comparison of photodimerization kinetics at different surface packing densities shows a nonmonotonic distribution of reaction rate constants, which can be attributed to a result of combined effects of the topochemical mechanism and steric hindrance. The atomic force microscopy measurements and theoretical calculations were also employed to help understand the [2 + 2] photocycloaddition mechanisms. The results presented in this work demonstrate that the surface packing density plays an important role in regulating the interfacial photoreactions within the LB monolayers composed of the conjugated aromatic molecular systems. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/39124]  |
| 专题 | 化学研究所_分子反应动力学实验室 |
| 作者单位 | 1.Chinese Acad Sci, CAS Res Educ Ctr Excellence Mol Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biobased Mat, Qingdao 266101, Shandong, Peoples R China 4.Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Yingxue,Xie, Yu,Lin, Lu,et al. Photodimerization Kinetics of a Styrylquinoline Derivative in Langmuir-Blodgett Monolayers Monitored by Second Harmonic Generation[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2017,121(42):23541-23550. |
| APA | Ma, Yingxue.,Xie, Yu.,Lin, Lu.,Zhang, Li.,Liu, Minghua.,...&Lu, Zhou.(2017).Photodimerization Kinetics of a Styrylquinoline Derivative in Langmuir-Blodgett Monolayers Monitored by Second Harmonic Generation.JOURNAL OF PHYSICAL CHEMISTRY C,121(42),23541-23550. |
| MLA | Ma, Yingxue,et al."Photodimerization Kinetics of a Styrylquinoline Derivative in Langmuir-Blodgett Monolayers Monitored by Second Harmonic Generation".JOURNAL OF PHYSICAL CHEMISTRY C 121.42(2017):23541-23550. |
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来源：化学研究所
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