Control of rapid formation of interchain excited states in sugar-threaded supramolecular wires

被引：44
作者：
Petrozza, Annamaria [1 ,2 ,3 ]
Brovelli, Sergio [1 ,2 ]
Michels, Jasper J. [4 ]
Anderson, Harry L. [4 ]
Friend, Richard H. [3 ]
Silva, Carlos [5 ]
Cacialli, Franco [1 ,2 ]
机构：
[1] UCL, Dept Phys & Astron, London WC1E 6BT, England
[2] London Ctr Nanotechnol, London WC1E 6BT, England
[3] Univ Cambridge, Dept Phys, Cavendish Lab, Cambridge CB3 0HE, England
[4] Univ Oxford, Chem Res Lab, Dept Chem, Oxford OX1 3TA, England
[5] Univ Montreal, Dept Phys & Regroupement Quebecois Mat Pointe, Montreal, PQ H3C 3J7, Canada
来源：
ADVANCED MATERIALS | 2008年 / 20卷 / 17期
基金：
英国工程与自然科学研究理事会; 加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1002/adma.200800007
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The time-resolved photoluminescence of cyclodextrin-threaded conjugated molecular wires and their unthreaded analogues is studied to probe suppression of intermolecular interactions by supramolecular encapsulation. The polyrotaxane dynamics are exponential and independent of concentration, different from those of unthreaded semiconductors, which display instead optical signatures of interchain species. This is fundamental insight into the photophysics of semiconducting polymers, and crucial for the development of organic electronics.
引用
收藏
页码：3218 / +
页数：7
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