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Issue 88, 2016
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Coherent random lasing from nano-scale aggregates of hybrid molecules by enhanced near zone scattering

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Abstract

Nano-scale aggregates of hybrid molecules, such as N,N′-di-[3-(isobutyl polyhedral oligomeric silsesquioxanes)propyl] perylene diimide (DPP) which is composed of perylene diimide (PDI) as gain group and polyhedral oligomeric silsesquioxanes (POSS) as scattering group at a mole ratio of 1 : 2, are formed in carbon disulfide (CS2) solution within a concentration range from 3 × 10−5 M to 10−3 M. The aggregation of DPP in the solution was characterized using ultraviolet visible (UV-vis) and fluorescence spectroscopy. Under pumping of a 532 nm pulse laser, coherent random laser (RL) is produced from the aggregates in CS2 solution with a threshold of 17.4 μJ and a Q value of 2440 at a DPP concentration of 10−4 M. Enhanced near zone scattering by aggregation is thought to boost coherent RL. This research not only extends the RL system to the extremely weak scattering regime but also provides a new direction for research on nano-scale materials for lasers using molecular design.

Graphical abstract: Coherent random lasing from nano-scale aggregates of hybrid molecules by enhanced near zone scattering

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Supplementary files

Article information


Submitted
23 Apr 2016
Accepted
22 Aug 2016
First published
22 Aug 2016

RSC Adv., 2016,6, 85538-85544
Article type
Paper

Coherent random lasing from nano-scale aggregates of hybrid molecules by enhanced near zone scattering

L. Yin, Y. Liang, B. Yu, Y. Wu, J. Ma, K. Xie, W. Zhang, G. Zou, Z. Hu and Q. Zhang, RSC Adv., 2016, 6, 85538
DOI: 10.1039/C6RA10511D

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