Coherent electronic coupling versus localization in individual molecular dimers -: art. no. 103001

被引：83

作者：

Lippitz, M

Hübner, CG

Christ, T

Eichner, H

Bordat, P

Herrmann, A

Müllen, K

Basché, T

机构：

[1] Univ Mainz, Inst Phys Chem, D-55099 Mainz, Germany

[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.92.103001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated electronic excitation transfer in individual molecular dimers by time and spectrally resolved confocal fluorescence microscopy. The single molecule measurements allow for directly probing the distribution of the electronic coupling strengths due to static disorder in the polymer host. We find dimers where the excitation is delocalized (superradiant emission) while for others emission originates from a localized state. Transitions between delocalized and localized states as observed for a given dimer are attributed to structural fluctuations of the guest-host system.

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页码：103001 / 1

页数：4

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