Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635, Athens, Greece.
Department of Chemistry, University of North Texas, 305070, Denton, TX, 76203-5017, USA.
Chemistry. 2020 May 20;26(29):6652-6661. doi: 10.1002/chem.202000174. Epub 2020 Apr 1.
The preparation of an entirely supramolecular, multichromophoric azaborondipyrromethene (ABDP)/zinc tetraphenylporphyrin (ZnTPP)/exfoliated graphene (GR) nanoensemble was accomplished. The ABDP derivative bears glycol chains for enhancing solubility and a pyridine functionality for allowing coordination with ZnTPP. The ABDP/ZnTPP/GR nanoensemble was characterized in terms of morphology and composition by using complementary microscopy imaging, thermogravimetric analysis, Raman as well as steady-state and time-resolved absorption and emission spectroscopy. The photophysical and electrochemical assessment of ABDP/ZnTPP/GR as well as the binding properties of the ABDP/ZnTPP complex, employed as a reference, are presented. Energy and electron transfer events were observed in ABDP/ZnTPP upon photoexcitation. However, in the case of ABDP/ZnTPP/GR, the graphene-induced aggregation of the chromophores alters their electronic interactions, enhancing the energy/electron transfer process between them.
成功制备了完全超分子的多发色团的硼二吡咯亚甲基（ABDP）/锌四苯基卟啉（ZnTPP）/剥离石墨烯（GR）纳米复合材料。ABDP 衍生物具有二醇链以提高其溶解度，并具有吡啶官能团，以允许与 ZnTPP 配位。使用互补的显微镜成像、热重分析、拉曼以及稳态和时间分辨吸收和发射光谱，对 ABDP/ZnTPP/GR 纳米复合材料的形貌和组成进行了表征。介绍了作为参考的 ABDP/ZnTPP 复合物的光物理和电化学评估以及结合性质。在光激发时观察到 ABDP/ZnTPP 中的能量和电子转移事件。然而，在 ABDP/ZnTPP/GR 的情况下，石墨烯诱导的发色团聚集改变了它们的电子相互作用，增强了它们之间的能量/电子转移过程。
