Structural Optimization and Property Tunability by Halogen Regulation in Zero-Dimensional Zinc Halide Organic–Inorganic Hybrid Materials

Low-dimensional hybrid materials show great structural flexibility and adjustability in photoelectric properties compared with high-dimensional (such as three-dimensional (3-D)) hybrid materials. To investigate the effect of halogen substitution on low-dimensional materials, three zero-dimensional (0-D) organic–inorganic hybrids, [BMPD]2ZnX4 (BMPD = 1-butyl-1-methylpiperidine cation, X = I, Br, and Cl), were synthesized. The phase transition temperature (Tc) increased gradually after changing I to Cl. Interestingly, the halogen regulation method induced the bright blue luminescence of [BMPD]2ZnBr4 with a quantum yield of 9.62% and the nonlinear optical properties of [BMPD]2ZnCl4. Thus, multiproperties are achieved by the above strategy. This work presented a method for discovering and application of new organic–inorganic hybrid multifunctional optoelectronic materials.