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

机译：通过增强近区域散射通过增强杂交分子纳米级聚集体的相干随机激光

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摘要

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 X 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 mJ 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.
机译：纳米级聚集的杂化分子，如N，N，N'-（异丁基多面体低聚二烷基烷基烷）丙基二酰亚胺（DPP），其由Per enge二酰亚胺（PDI）作为增益组和多面体低聚倍半烷基（ POSS）作为摩尔比为1：2的散射基团，在浓度范围内的碳二硫化物（CS2）溶液中形成为3×10（ - 5）m至10（-3）M. DPP的聚集在于 使用紫外线可见（UV-VI）和荧光光谱来表征溶液。 在泵送532nm脉冲激光器中，连贯的随机激光（R1）由CS2溶液中的聚集体产生17.4MJ的阈值，DPP浓度为10（4）米的DPP浓度为2440的Q值 通过聚合被认为能够提升连贯的RL。 这项研究不仅将RL系统扩展到极其弱的散射方案，而且还为使用分子设计的激光器的纳米级材料进行了新的方向。

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  • 来源
    《RSC Advances》 |2016年第88期|共7页
  • 作者

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

  • 作者单位

    Univ Sci &

    Technol China Anhui Key Lab Optoelect Sci &

    Technol Dept Polymer Sci &

    Engn Collaborat Innovat Ctr Chem Energy Mat Key Lab So Hefei 230026 Anhui Peoples R China;

    Hefei Univ Technol Sch Instrument Sci &

    Optoelect Engn Hefei 230009 Peoples R China;

    Univ Sci &

    Technol China Anhui Key Lab Optoelect Sci &

    Technol Dept Polymer Sci &

    Engn Collaborat Innovat Ctr Chem Energy Mat Key Lab So Hefei 230026 Anhui Peoples R China;

    China Acad Engn Phys Inst Chem Mat Mianyang 621900 Sichuan Peoples R China;

    Southwest Univ Sci &

    Technol State Key Lab Cultivat Base Nonmet Composite &

    Fu Mianyang 621010 Peoples R China;

    Hefei Univ Technol Sch Instrument Sci &

    Optoelect Engn Hefei 230009 Peoples R China;

    Hefei Univ Technol Sch Instrument Sci &

    Optoelect Engn Hefei 230009 Peoples R China;

    Univ Sci &

    Technol China Anhui Key Lab Optoelect Sci &

    Technol Dept Polymer Sci &

    Engn Collaborat Innovat Ctr Chem Energy Mat Key Lab So Hefei 230026 Anhui Peoples R China;

    Hefei Univ Technol Sch Instrument Sci &

    Optoelect Engn Hefei 230009 Peoples R China;

    Univ Sci &

    Technol China Anhui Key Lab Optoelect Sci &

    Technol Dept Polymer Sci &

    Engn Collaborat Innovat Ctr Chem Energy Mat Key Lab So Hefei 230026 Anhui Peoples R China;

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