are presented. Evidence for singlet electron and triplet energy transfer from the Cz chromophore to the F moiety are provided and discussed in detail. The rate for electron transfer is very fast (>4 x 10(11) s(-1)), whereas that for triplet-triplet energy transfer is much slower (approximately 10(3) s(-1)). This work represents a very rare example of studies that address electronic communication in
(-Cz-C [三
化学键] C-PtL(2)-C [三
化学键] C-Cz-X-)(n)类型的聚合物与相应的模型化合物(Ph-PtL '(2)-C [三
化学键] C-Cz)(2)-X-,其中Cz = 3,3'-
咔唑,X =无,Cz或F(2,2'-
芴),L报告了= PBu(3)和L'= PEt(3)。给出了在298和77 K下
2-甲基四氢呋喃(2MeTHF)中这些物质的电子光谱(吸收,激发,发射和ns瞬态光谱)和光物理性质。提供并详细讨论了从Cz生色团到F部分的单重态电子和三重态能量转移的证据。电子转移的速度非常快(> 4 x 10(11)s(-1)),而三重态-三重态的能量转移速度要慢得多(大约10(3)s(-1))。