New Anthracene Derivatives as Triplet Acceptors for Efficient Green-to-Blue Low-Power Upconversion
作者:Zuo-Qin Liang、Bin Sun、Chang-Qing Ye、Xiao-Mei Wang、Xu-Tang Tao、Qin-Hua Wang、Ping Ding、Bao Wang、Jing-Jing Wang
DOI:10.1002/cphc.201300571
日期:2013.10.21
triplet acceptors for low‐power upconversion. Their linear absorption, single‐photon‐excited fluorescence, and upconversion fluorescence properties were studied. The acceptors exhibit high fluorescence yields in DMF. Selective excitation of the sensitizer PdIIoctaethylporphyrin (PdOEP) in solution containing DTACl, DTACN, or DNA‐CN at 532 nm with an ultralow excitation power density of 0.5 W cm−2 results
三种新的蒽衍生物[2-氯-9,10-二甲苯基蒽(DTACl),9,10-二甲苯基蒽-2-腈(DTACN)和9,10-二(萘-1-基)蒽]合成了2腈(DNACN)作为三重态受体,用于低功率上转换。研究了它们的线性吸收,单光子激发荧光和上转换荧光特性。受体在DMF中显示出高荧光产量。含有DTCCl,DTACN或DNA-CN的溶液中的敏化剂Pd II八乙基卟啉(PdOEP)在532 nm处有0.5 W cm -2的超低激发功率密度选择性激发,产生了反斯托克斯蓝光。最大转换量子效率(Φ UC对于一对PdOEP / DTACl,获得了17.4%的浓度。此外,通过猝灭实验定量研究了三重态-三重态能量传递过程的效率。实验结果表明,用于上转换的高效受体应将高荧光量子产率与敏化剂三重态的有效猝灭结合起来。