Construction and Luminescence Regulation Strategies of Excited-State Intramolecular Proton Transferring Metal-Organic Optical Materials——On the Atomic Spectral Terms in Structural Chemistry
The process of excited-state intramolecular proton transfer(ESIPT)involves a unique four-level energy state cycle and associated multiple emissions.Under the regulation of ESIPT excited states,metal-organic supra-molecular optical materials exhibit a rich variety of luminescence mechanisms and applications across multiple fields by demonstrating the balance and transformation relationships of various photophysical processes(non-radiative transitions,radiative transitions,energy transfer,charge transfer,etc.).Given that the understanding of the prop-erties of ESIPT metal-organic supramolecular materials is still in its infancy,there is an urgent need to establish new strategies for regulating luminescence mechanisms.This paper reviews the construction and luminescence regu-lation of ESIPT metal-organic supramolecular materials,which is of guiding significance for the construction of no-vel photo-functional materials in the future and simultaneously strengthens the theoretical value of atomic spectral terms in the field of supramolecular materials.
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