Visualizing photochemical dynamics in solution through picosecond x-ray scattering

被引：96

作者：

Neutze, R

Wouts, R

Techert, S

Davidsson, J

Kocsis, M

Kirrander, A

Schotte, F

Wulff, N

机构：

[1] Chalmers, Dept Mol Biotechnol, SE-40530 Gothenburg, Sweden

[2] Uppsala Univ, Ctr Biomed, Dept Biochem, S-75123 Uppsala, Sweden

[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[4] Uppsala Univ, Dept Phys Chem, S-75121 Uppsala, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.87.195508

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A photoexcited state of molecular iodine in solution is observed using diffuse x-ray scattering at a synchrotron source. The measured changes in the diffuse scattering profile were consistent with earlier models of iodine's photodissociation and geminate recombination reaction, for which the recombined A/A' state has a 0.4 Angstrom greater interatomic spacing than the resting state and has a lifetime of 500 ps in CH2Cl2. This technique should find application in the study of increasingly complicated photochemical systems which undergo structural rearrangements following rapid photolysis.

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页码：1 / 195508

页数：4

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