Responsive mechanism of 2-(2′-hydroxyphenyl)benzoxazole-based two-photon fluorescent probes for zinc and hydroxide ions*
Zhang Yu-Jin, Zhang Qiu-Yue, Ding Hong-Juan, Song Xiu-Neng, Wang Chuan-Kui†
       
Charge variations between charge transfer states and ground states of each molecule. The white and black areas represent electron gain and loss, respectively.