as evaluated from luminescence lifetime. The photophysical studies and theoretical calculations suggest that the Forster resonance mechanism is very suitable for the energy transfer from PtP to the Er(III) ion and occurred through the first triplet excited state of PtP. The 12.3% energy transfer from the triplet state to the 4F9/2 and 4I9/2 states of Er(III) occurred with a rate distribution of 3
研究了与
铂[5,10,15-三苯基-20-(4-羧基苯基)-
卟啉](PtP)和三
吡啶(tpy)
配体配位的Er(III)配合物的光物理性质。当PtP
配体在脱氧条件下被激发时,Er(III)络合物发出敏化的近红外(NIR)发光。从发光寿命评估,敏化发光的量子产率(PhiLn)为0.015%。光物理研究和理论计算表明,Forster共振机制非常适合从PtP到Er(III)离子的能量转移,并且是通过PtP的第一个三重激发态发生的。从三重态到Er(III)的4F9 / 2和4I9 / 2状态的12.3%能量转移分别发生在3.36x10(5)和6.67x10(4)s(-1)的速率分布上。此外,