Picosecond kinetics and reverse saturable absorption of meso-substituted tetrabenzoporphyrins

被引：81
作者：
Chen, PL
Tomov, IV
Dvornikov, AS
Nakashima, M
Roach, JF
Alabran, DM
Rentzepis, PM
机构：
[1] UNIV CALIF IRVINE,DEPT CHEM,IRVINE,CA 92717
[2] USA,NATICK RES DEV & ENGN CTR,NATICK,MA 01760
来源：
JOURNAL OF PHYSICAL CHEMISTRY | 1996年 / 100卷 / 44期
关键词：
D O I：
10.1021/jp9615161
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：
The mechanism of reverse saturable absorption of meso-substituted tetrabenzoporphyrins was studied by means of picosecond transient spectroscopy. Characteristic (1)(pi,pi*), (3)(pi,pi*), and (d,d) transitions have been observed. The kinetics of the excited states vary with metal substitution. The nonlinear transmission of benzoporphyrins was measured, and the excited-state absorption was determined to be the dominant optical limiting mechanism. The results agreed very well with a five-level model.
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收藏
页码：17507 / 17512
页数：6
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