Synthesis of new C60donor dyads by reaction of pyrazolylhydrazones with [60]fullerene under microwave irradiation
摘要:
A facile synthesis of a series of pyrazolo[4,5'][60]fullerenes from pyrazolyl hydrazones under microwave irradiation is described. Evidence of intramolecular charge transfer internation is shown. (C) 1999 Elsevier Science Ltd. All rights reserved.
C<sub>60</sub>-Based Triads with Improved Electron-Acceptor Properties: Pyrazolylpyrazolino[60]fullerenes
作者:Fernando Langa、Pilar de la Cruz、Eva Espíldora、Antonio de la Hoz、José Luis Bourdelande、Luis Sánchez、Nazario Martín
DOI:10.1021/jo001755r
日期:2001.7.1
A series of triad pyrazolylpyrazolino[60]fullerenes has been prepared in one pot from suitably functionalized hydrazones by 1,3-dipolar cycloaddition reactions under microwave irradiation. The electrochemical properties of the compounds obtained were investigated by cyclic voltammmetry, and they show better electron acceptor character than the parent C-60 in all cases. Fluorescence experiments and time-resolved transition spectroscopy indicate the existence of photoinduced charge-transfer processes with the C-60 triplet acting as the acceptor.