The C-O bond dissociation of naphthoxymethyl compounds in the higher triplet excited state using two-color two-laser flash photolysis

被引：6

作者：

Cai, Xichen

Yamaji, Minoru

Sakamoto, Masanori

Fujitsuka, Mamoru

Majima, Tetsuro

机构：

[1] Osaka Univ, Inst Sci & Ind Res SANKEN, Osaka 5670047, Japan

[2] Gunma Univ, Dept Chem, Gunma 3768515, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2007年 / 443卷 / 4-6期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/j.cplett.2007.06.062

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：

C-O bond dissociation of naphthoxymethyl compounds NpO-CH2R (Np = alpha- or beta-naphthalene moiety, R = Ph or Me) in the higher triplet excited state (T-n, n >= 2) was investigated using two-color two-laser flash photolysis. The C-O bond dissociation was found to occur with quantum yields (phi) of 0.06 and 0.07 for alpha- and beta-NpO-CH2Ph(T-n), respectively. With the use of reported data on C-O bond cleavage in NpCH2-OPh(T-n) and NpCH2-OMe(T-n), it was concluded that phi is related to the T-n-state lifetime and the energy barrier between the Tn state and dissociative potential surfaces. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：248 / 252

页数：5

共 28 条

[1] Stepwise photocleavage of C-O bonds of bis(substituted-methyl)naphthalenes with stepwise excitation by two-color two-laser and three-color three-laser irradiations [J].