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通过宿主-客体复合增强三倍-三倍能量转移和上转化光

Chunying Fan¹, Wanhua Wu^1,2, Jason J Chruma^1,3

¹Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry and State Key Laboratory of Biotherapy, West China Medical School, Sichuan University , 29 Wangjiang Road, Chengdu 610064, China.

Journal of the American Chemical Society

|November 1, 2016

概括

超分子宿主-客体复合显著提高了三倍-三倍灭绝上转换 (TTA-UC) 的效率. 这一策略增强了能量传输,克服了减少的发射器光,提高了TTA-UC性能.

科学领域:

超分子化学
摄影化学
材料科学

背景情况:

三倍-三倍灭绝上转换 (TTA-UC) 是将低能光子转换为高能光子的关键过程.
有机三重光敏感剂和发射器是TTA-UC系统的关键组件,但它们的效率可能受到光物理特性和度效应的限制.
烯衍生物和富勒基二通常用于TTA-UC应用.

研究的目的:

为增强TTA-UC合成新型烯接柱[5]作为发射剂和C60-二甲基 (BODIPY) 二合物.
研究超分子宿主-客体复合对光物理性质和TTA-UC效率的影响.
证明超分子方法在改善TTA-UC而不会改变内在敏感剂和发射剂的有效性.

主要方法:

合成烯结合柱体[5]和C60-BODIPY双.
光物理性质的表征,包括光量子产量和关联常数.
通过宿主-客人复杂化研究评估TTA-UC效率.

主要成果:

稳定的1:1复合体形成在烯接柱[5]场 (主体) 和C60-BODIPY二极体 (客体) 之间,具有高关联常数 (4.0 × 10^4 M^-1).
主体-客体复合显著提高了三倍三倍的能量传输和TTA效率.
在低度 (6 × 10 ^ - 5 M) 中获得了3. 2% 的提升的TTA-UC效率,以弥补发射器光量的减少.

结论:

超分子宿主-客体复合是一种提高TTA-UC效率的高效策略.
这种方法通过优化能量传输途径而成功地提高了TTA-UC性能,而不会对组件固有的光物理特性产生负面影响.
这项研究展示了一种使用定制的超分子相互作用来提高TTA-UC效率的新方法.

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