Time, space, and spectrally resolved studies on J-aggregate interactions in zeolite L nanochannels

被引:87
作者
Busby, Michael [1 ,2 ]
Blum, Christian [3 ,4 ]
Tibben, Marc [3 ,4 ]
Fibikar, Sandra [1 ,2 ]
Calzaferri, Gion [5 ]
Subramaniam, Vinod [3 ,4 ]
De Cola, Luisa [1 ,2 ]
机构
[1] Univ Munster, CeNTech, Inst Phys, D-48149 Munster, Germany
[2] Univ Munster, CeNTech, Ctr Nanotechnol, D-48149 Munster, Germany
[3] Univ Twente, Fac Sci & Technol, Biophys Engn Grp, NL-7500 AE Enschede, Netherlands
[4] Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands
[5] Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland
关键词
D O I
10.1021/ja801178p
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Temporally and spectrally resolved confocal microscopy has been used to explore the behavior of pyronine intercalated zeolite L crystals at different loadings. The low pyronine loading of 0.6% exhibits photophysical behavior similar to that of the free molecule in solution, indicating molecules are isolated from each other in the crystal channels. The higher loading of 20% results in a dye gradient along the channel axis, and the presence of an additional red-shifted spectroscopic transition, with shorter lifetimes. The new band is assigned to an inline arrangement of the molecules undergoing a J-aggregate-type coupling, a process so far not observed in subnanometer channels.
引用
收藏
页码:10970 / 10976
页数:7
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