Pressure-Induced Luminescence Evolution Mediated by Phase Transition of a One-Dimensional Metal–Organic Chalcogenolate

Metal–organic chalcogenolates (MOCs), as an emerging type of hybrid semiconductor material, have garnered significant research interest owing to their tunable structures and excellent optoelectronic properties. A deep understanding of the intrinsic relationships between their structure and properties is of vital importance for controlling and optimizing their application. In this work, we obtained a 1D silver aliphatic thiolate MOC semiconductor {Ag4[(CH3)2CHS]4}∞ and studied its optical property variations induced by hydrostatic pressure. An obvious dual emission in the compound could be observed during compression, which was aroused by the closer argentophilic interaction. Multiple in situ high-pressure characterizations combined with theoretical calculations were performed to investigate the evolution of its optical properties with structures. This study presents an interesting photophysical process of dual emission evolution, enriching the research on high-pressure applications in the field of metal–organic chalcogenolates (MOCs) and providing a reference for the design of next-generation MOCs with tailored optoelectronic functions.