Theoretical investigation on the photophysical properties of N-heterocyclic carbene iridium (III) complexes (fpmb)xIr(bptz)3-x (x = 1-2). - Qi Cao; Jing Wang; Zhao-Shuo Tian; Zai-Feng Xie; Fu-Quan Bai (J. Comput. Chem., 2012)