Ultrafast dynamics of pyrene excimer formation in Y zeolites

被引:15
作者
Cheng, KAWY [1 ]
Schepp, NP [1 ]
Cozens, FL [1 ]
机构
[1] Dalhousie Univ, Dept Chem, Halifax, NS B3H 4J3, Canada
关键词
D O I
10.1021/jp046935+
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Pyrene excimer emission in alkali-metal-exchanged zeolites is readily observed to grow in using an ultrafast streak camera with 3.3 ps time-resolution. Rise-time constants range from 7 to 14 ps depending on the composition of the zeolite. These results show that two pyrene molecules in doubly occupied cavities must move from their pre-excitation orientation into the face-to-face orientation required for the excimer.
引用
收藏
页码:7132 / 7134
页数:3
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