Synthesis and photophysical characterization of chalcogen substituted BODIPY dyes
Synthesis and photophysical characterization of chalcogen substituted BODIPY dyes
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DOI：
10.1039/b900786e
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发表时间：
2009-01-01
影响因子：
3.3
通讯作者：
Vosch, Tom
中科院分区：
文献类型：
--
作者：
Fron, Eduard;Coutino-Gonzalez, Eduardo;Vosch, Tom
介绍了五种含硫族元素的BODIPY衍生物的合成细节以及它们的稳态和时间分辨电子物理性质。的电子物理数据进行比较，作为参考的氯原子含有BODIPY。HOMO-LUMO跃迁能量的强烈影响是通过与硫族元素基单元的亲核取代实现的。从氧到碲，观察到吸收和发射光谱从绿色到近红外区域的红移。通过采用荧光单光子定时实验在两种不同极性的溶剂中，激发态动力学和它们的溶剂依赖性表明存在一种机制，涉及光诱导电荷转移，显着影响这些衍生物的光辐射过程。
Synthetic details and stationary and time-resolved photophysical properties of five BODIPY derivatives containing chalcogen atoms are presented. The photophysical data are compared to those of a chlorine atom containing BODIPY, acting as a reference. A strong impact in the HOMO-LUMO transition energy is achieved via nucleophilic substitution with chalcogen based units. Going from oxygen to tellurium a bathochromic shift in both absorption and emission spectra from the green to the near infrared region was observed. By employing fluorescence single photon timing experiments in two solvents of different polarity, the excited state dynamics and their solvent dependence indicate the presence of a mechanism involving a photoinduced charge transfer that dramatically affects the optical radiative processes of these derivatives.