Charge-Transfer Emission in Nonplanar Three-Coordinate Organoboron Compounds for Fluorescent Sensing of Fluoride

摘要

Three-coordinate organoboron compounds possess an empty p_(pi) orbital on the boron center and hence have a tendency to display intense intramolecular charge-transfer transitions when an appropriate electron donor is present.Such donor-acceptor charge-transfer properties have enabled a number of important applications of three-coordinate boron compounds in materials chemistry such as nonlinear optical materials,charge-transport materials,and emitters in organic light emitting devices (OLEDs).