Chiral Zero‐Dimensional Hybrid Antimony Chloride with Circularly Polarized Luminescence and Solvent‐Induced Property Regulation

In this study, we synthesized two pairs of enantiomeric Sb³⁺-based 0D chiral hybrid metal halides (HMHs), (R/S-3AP)₄SbCl₁₁⋅DMF and (R/S-3AP)₄SbCl₁₁⋅ACN, which exhibit efficient circularly polarized luminescence (CPL) emissions with distinct optical properties influenced by the solvent environment. (R/S-3AP)₄SbCl₁₁⋅DMF displays bright orange luminescence with a photoluminescence quantum yield (PLQY) of 57.1 %, while (R/S-3AP)₄SbCl₁₁⋅ACN emits red luminescence with a PLQY of 17.4 %. Notably, (R/S-3AP)₄SbCl₁₁⋅ACN achieves a maximum dissymmetry factor (|g_lum|) of 2.27×10^-3, attributed to strong hydrogen bonding between organic and inorganic components. Reversible transformations between these two phases via solvent vapor stimulation enable dynamic photoluminescence (PL) switching, highlighting their application in anti-counterfeiting technology. Furthermore, circularly polarized light-emitting devices (CPL-emitting devices) based on these materials were fabricated, achieving a maximum |g_lum| of 2.01×10^-3. These findings underscore the potential of these chiral HMHs for advanced applications in chiral optoelectronics, anti-counterfeiting, and CPL-emitting devices.