Ultrafast Luminescence Detection with Selective Adsorption of Carbon Disulfide in a Gold(I) Metal−Organic Framework

Abstract Although a widely used and important industrial chemical, carbon disulfide (CS 2 ) poses a number of hazards due to its volatility and toxicity. As such, the development of multifunctional materials for the selective capture and easy recognition of CS 2 is one of the crucial issues. Herein, we demonstrate completely selective CS 2 adsorption among trials involving H 2 O, alcohols, volatile organic compounds (including thiol derivatives), N 2 , H 2 , O 2 , CH 4 , CO, NO, and CO 2 . We also showcase its fine detection using remarkable luminescent response in a gold(I)‐based metal−organic framework (MOF) of {Zn II (pz)[Au I (CN) 2 ] 2 } (pz=pyrazine; 1 ) with a two‐fold interpenetration network. Ex situ single crystal X‐ray diffraction for 1 and CS 2 ‐accommodated 1 suggested that the Au ⋅⋅⋅ Au atoms are not only luminescent centers but also act as interaction sites for CS 2 modulating the Au ⋅⋅⋅ Au contacts. These experiments revealed the specificity of CS 2 and how changes in the CS 2 ‐induced structure. Based on the obtained structural transformation, 1 exhibited a sensitive detecting ability for CS 2 with an ultrafast response time of less than 10 s. Moreover, ex situ time‐resolved photoluminescence analyses developed in this work implied that CS 2 varied the energetic relaxation at the excited states related to the luminescent efficiency of the resultant MOF system.