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

Leicheng Yin, Yunyun Liang, Bo Yu, Yeping Wu, Jiajun Ma, Kang Xie, Wei Zhang, Gang Zou, Zhijia Hu*, Qijin Zhang

*Corresponding author for this work

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)85538-85544
Number of pages7
JournalRSC advances
Volume6
Issue number88
Early online date22 Aug 2016
DOIs
Publication statusE-pub ahead of print - 22 Aug 2016

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    Yin, L., Liang, Y., Yu, B., Wu, Y., Ma, J., Xie, K., Zhang, W., Zou, G., Hu, Z., & Zhang, Q. (2016). Coherent random lasing from nano-scale aggregates of hybrid molecules by enhanced near zone scattering. RSC advances, 6(88), 85538-85544. https://doi.org/10.1039/c6ra10511d