A White‐Light‐Emitting Borate‐Based Inorganic–Organic Hybrid Open Framework

Intrinsic white borate phosphors: Solvothermal reaction of H3BO3 and ethylenediamine afforded the first three-dimensional zeolite-like ammonium borate. Its blue photoluminescence can be modified to white by a simple heat-treatment process at 250, at 360, or at 250 °C after doping with Eu3+ ions (see picture, left to right). In the absence of solvent, the same solvothermal reaction gave the first amine-pillared layer borate-based framework.