非平面2,3,7,8,12,13,17,18-八乙基-5,10,15,20-四苯基卟啉的Cu(II)和Zn(II)配合物的外球单电子氧化反应分光光度法研究了平面卟啉以及2,3,7,8,12,13,17,18-八乙基卟啉和5,10,15,20-四苯基卟啉的铜(2+)给出相应的pi-阳离子自由基在乙腈中。使用电子转移反应的马库斯(Marcus)交叉关系,确定了母卟啉与卟啉配合物及其pi-阳离子自由基之间的电子自交换速率常数。对于平面卟啉和卟啉配合物,所获得的速率常数约为10(9)至10(11)M(-1)s(-1),以及10(4)至10(6)M(-1) T = 25.0摄氏度时非平面OETPP配合物的s(-1)。
Self-Assembled Porphyrin−C<sub>60</sub> and Porphycene−C<sub>60</sub> Complexes via Metal Axial Coordination
作者:Francis D'Souza、Gollapalli R. Deviprasad、Muhammad S. Rahman、Jai-pil Choi
DOI:10.1021/ic981358n
日期:1999.5.1
singlet emission studies show efficient quenching of the investigated zinc tetrapyrrole emission upon axial coordination of pyridine appended C(60). Free-energy calculations indicate that the photoinduced electron transferfrom the singlet excited zinc tetrapyrrole to C(60) is exergonic, and the estimated rates of electron transfer are found to be (2.4 +/- 0.3) x 10(8) s(-)(1) for the (TPP)Zn-py approximately