Structure determination of the intramolecular charge transfer state in crystalline 4-(diisopropylamino)benzonitrile from picosecond X-ray diffraction

被引：88

作者：

Techert, S ^{[1
]}

Zachariasse, KA ^{[1
]}

机构：

[1] Max Planck Inst Biophys Chem, Spektroskopie & Photochem Kinet, D-37070 Gottingen, Germany

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 17期

关键词：

D O I：

10.1021/ja0379518

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The molecular structure of photoexcited crystalline 4-(diisopropylamino)benzonitrile (DIABN) is determined by time-resolved X-ray diffraction with a time resolution of 70 ps. Spectroscopic results Suggest that an ICT state with a lifetime of 3 ns is produced after photoexcitation. According to structural refinement of the X-ray data (powder diffraction), the torsional angle of the diisopropylamino group with respect to the plane of the phenyl ring of DIABN decreases from 14degrees in the electronic ground state to 10degrees in the equilibrated ICT state.

引用

页码：5593 / 5600

页数：8

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