Exciton trapping in π-conjugated materials:: A quantum-chemistry-based protocol applied to perylene bisimide dye aggregates

被引:286
作者
Fink, Reinhold F. [1 ]
Seibt, Joachim [1 ]
Engel, Volker [1 ]
Renz, Manuel [1 ]
Kaupp, Martin [1 ]
Lochbrunner, Stefan [1 ]
Zhao, Hong-Mei [1 ]
Pfister, Johannes [1 ]
Wuerthner, Frank [1 ]
Engels, Bernd [1 ]
机构
[1] Univ Wurzburg, Inst Organ Phys & Anorgan Chem, D-97074 Wurzburg, Germany
关键词
D O I
10.1021/ja804331b
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Access to excited-state structures and dynamics of pi-chromophor aggregates is needed to understand their fluorescence behavior and the properties of related materials. A quantum-chemistry-based protocol that provides quantitative and qualitative insight into fluorescence spectra has been applied to perylene bisimide dimers and provides excellent agreement with measured fluorescence spectra. Both dispersion and dipol-dipole interactions determine the preferred relative arrangements of the chromophores in ground and excited states of the dimer. An exciton trappping mechanism is identified, which may limit the energy transfer properties of perylene bisimide and other dye materials.
引用
收藏
页码:12858 / +
页数:3
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