Bodipy–Anthracene Dyads as Triplet Photosensitizers: Effect of Chromophore Orientation on Triplet-State Formation Efficiency and Application in Triplet–Triplet Annihilation Upconversion,Organic Letters

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Bodipy–Anthracene Dyads as Triplet Photosensitizers: Effect of Chromophore Orientation on Triplet-State Formation Efficiency and Application in Triplet–Triplet Annihilation Upconversion
Organic Letters ( IF 4.9 ) Pub Date : 2017-08-15 00:00:00 , DOI: 10.1021/acs.orglett.7b02047
Zhijia Wang ₁ , Jianzhang Zhao ₁

Affiliation

Bodipy–anthracene dyads with two chromophores assuming orthogonal geometry to enhance the spin-orbital charge-transfer intersystem crossing (SOCT-ISC) were prepared. The photosensitizers show strong absorption of visible light, efficient triplet-state formation (quantum yield 90%), and a long-lived triplet state (85 μs). The dipole moment orientation exerts significant effect on the ISC efficiency. It is also the first time that photosensitizers based on SOCT-ISC were used for triplet–triplet annihilation upconversion. The upconversion quantum yield is up to 15.8%.

中文翻译：

Bodipy-蒽二联体作为三重态光敏剂：发色团取向对三重态形成效率的影响及其在三重态-三重Up灭上转换中的应用

制备了带有两个生色团的Bodipy-蒽二联体，假定它们具有正交几何形状以增强自旋轨道电荷转移系统间交叉（SOCT-ISC）。光敏剂显示出对可见光的强吸收，有效的三重态形成（量子产率为90％）和长寿命的三重态（85μs）。偶极矩方向对ISC效率有重要影响。这也是第一次将基于SOCT-ISC的光敏剂用于三重态-三重态an灭上转换。上转换量子产率高达15.8％。

更新日期：2017-08-15

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