A new approach to the calculation of the triplet-triplet interaction constant in molecular crystals.

被引：5

作者：

BenFredj, A

Romdhane, S

Monge, JL

Bouchriha, H

机构：

[1] UNIV PARIS 06, PHYS SOLIDES GRP, F-75251 PARIS 05, FRANCE

[2] FAC SCI TUNIS, PHYS MAT CONDENSEE LAB, TUNIS 1060, TUNISIA

来源：

JOURNAL DE PHYSIQUE I | 1997年 / 7卷 / 02期

关键词：

D O I：

10.1051/jp1:1997149

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new approach to the calculation of the mutual annihilation rate constant of triplet excitons in molecular crystals is presented. The formalism includes spin relaxation and the exciton motion dimentionality effect. This method is applied to the study of magnetic field modulation of delayed fluorescence in four molecular crystals: anthracene, naphtalene, paraterphenyl and pyrene. The agreement of the best fit between experiment and theory allowed us to reach an average spacing interaction of the order of 30 Angstrom with annihilation rate constants ranging between 10(9) and 10(10) s(-1) depending on the considered materials.

引用

页码：349 / 370

页数：22

共 30 条

[1]

ALTWEGG L, 1976, CHEM PHYS B, V14, P1963

[2] EXPERIMENTAL STUDY OF TRIPLET EXCITATION DIFFUSIVITY IN CRYSTALLINE PYRENE AT 300 K [J].