Radiationless deactivation of the second excited singlet state 1Σg+ of O2 in solution

被引：39

作者：

Schmidt, R ^{[1
]}

Bodesheim, M ^{[1
]}

机构：

[1] Univ Frankfurt, Inst Phys & Theoret Chem, D-60439 Frankfurt, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 1998年 / 102卷 / 25期

关键词：

D O I：

10.1021/jp981170p

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 deactivation of the upper excited singlet oxygen O-2((1)Sigma(g)(+)) by 22 different quenchers has been studied in the liquid phase by time-resolved emission experiments. Radiationless deactivation occurs by electronic to vibrational (e-v) energy transfer to terminal bonds X-Y of the quenching molecule. A model is presented which describes the broad variation of rate constants over 4 orders of magnitude. The quantitative comparison with the e-v deactivation of O-2((1)Delta(g)) demonstrates that for O-2((1)Sigma(g)(+)) in addition to the excitation of stretching modes the excitation of bending modes of X-Y becomes important for the overall deactivation process.

引用

页码：4769 / 4774

页数：6

共 38 条

[11]

EINWOHNER T, 1968, J CHEM PHYS, V49, P1548

[12]

Herzberg G, 1966, MOL SPECTRA MOL STRU

[13] TRAJECTORY CALCULATIONS OF INTERMOLECULAR ENERGY-TRANSFER IN SO2-AR COLLISIONS .1. METHOD AND REPRESENTATIVE RESULTS [J].

HIPPLER, H ;

SCHRANZ, HW ;

TROE, J .

JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (23) :6158-6167

[14] LIFETIME OF SINGLET OXYGEN IN SOLUTION DIRECTLY DETERMINED BY LASER SPECTROSCOPY [J].

HURST, JR ;

MCDONALD, JD ;

SCHUSTER, GB .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1982, 104 (07) :2065-2067

[15] NONRADIATIVE RELAXATION OF SINGLET OXYGEN IN SOLUTION [J].

HURST, JR ;

SCHUSTER, GB .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1983, 105 (18) :5756-5760

[16] Quenching rate constants for PCl(b(1)Sigma(+),nu'=0) [J].

Liu, CP ;

Zou, SL ;

Guo, JZ ;

Gu, YS ;

Cao, DZ ;

Chu, YN ;

Setser, DW .

JOURNAL OF PHYSICAL CHEMISTRY A, 1997, 101 (40) :7345-7349

[17]

Minaev B.F., 1993, J MOL STRUCT, V284, P1

[18] OBSERVATION OF (B1SIGMA+G-A1DELTAG) TRANSITION IN O [J].

NOXON, JF .

CANADIAN JOURNAL OF PHYSICS, 1961, 39 (08) :1110-&

[19]

OGILBY PR, 1982, J AM CHEM SOC, V104, P2069, DOI 10.1021/ja00371a067

[20] SOLVENT-INDUCED DEACTIVATION OF SINGLET OXYGEN - ADDITIVITY RELATIONSHIPS IN NON-AROMATIC SOLVENTS [J].

RODGERS, MAJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1983, 105 (20) :6201-6205

← 1 2 3 4 →