Diarylfluorenes-based π-stacked molecules: synthesis, X-ray crystallography, and supramolecular light-emitting devices
作者:Yang Yang、Jian-Feng Zhao、Ran-Ran Liu、Jie-Wei Li、Ming-Dong Yi、Guo-Hua Xie、Ling-Hai Xie、Yong-Zheng Chang、Cheng-Rong Yin、Xin-Hui Zhou、Yi Zhao、Yan Qian、Wei Huang
DOI:10.1016/j.tet.2013.02.090
日期:2013.7
A series of intramolecular pi-stacked molecules as new-concept supramolecular organic semiconductors have been designed by means of the ortho-substituted steric hindrance of diarylfluorenes and facile synthesized via the key step of BF3 center dot Et2O-mediated Friedel Crafts reaction of carbinols. Their intramolecular pi-pi stacking interactions were corroborated by the X-ray crystallography, NMR, as well as theoretical simulation. The supramolecular organic light-emitting devices exhibited an anomalous electroluminescence with a maximum luminance of ca. 1282 cd/m(2), a luminous efficiency of 0.24 cd/A, and a turn-on voltage of 9 V. The pi-stacked semiconductors are potential models of supramolecular semiconductors and optoelectronics. (C) 2013 Published by Elsevier Ltd.