Amplified Spontaneous Emission in Conjugated Polyrotaxanes Under Quasi-cw Pumping

被引：41
作者：
Mroz, Marta M. [1 ,5 ]
Sforazzini, Giuseppe [2 ]
Zhong, Yongchun [3 ]
Wong, Kam Sing [3 ]
Anderson, Harry L. [2 ]
Lanzani, Guglielmo [4 ,5 ]
Cabanillas-Gonzalez, Juan [1 ]
机构：
[1] IMDEA Nanociencia, Inst Madrileno Estudios Avanzados, Madrid 28049, Spain
[2] Univ Oxford, Dept Chem, Chem Res Lab, Oxford OX1 3TA, England
[3] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China
[4] Ist Italiano Tecnol, Ctr Nano Sci & Technol Polimi, I-20133 Milan, Italy
[5] Politecn Milan, IFN CNR, Dipartimento Fis, I-20133 Milan, Italy
来源：
ADVANCED MATERIALS | 2013年 / 25卷 / 31期
关键词：
rotaxanes; optoelectronics; lasing; quasi-cw pumping; INSULATED MOLECULAR WIRES; OPTICAL GAIN; POLYFLUORENES; OPTIMIZATION; POLYMERS; FILMS;
D O I：
10.1002/adma.201301703
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Amplified spontaneous emission under millisecond pulsed excitation on a rotaxane-insulated conjugated polymer is reported. Pump-probe spectroscopy confirms the absence of polaron-pair absorption in the gain spectral region as the main factor contributing to quasi-steady-state amplified spontaneous emission. The low polaron-pair yield in this compound is the likely result of effective backbone encapsulation provided by the threading ring. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：4347 / 4351
页数：5
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