title: Dual emissions from MnS clusters confined in the sodalite nanocage of a chalcogenide-based semiconductor zeolite.
abstract: A new host-guest hybrid system with MnS clusters confined in a chalcogenide-based semiconductor zeolite was for the first time constructed and its photoluminescence (PL) properties were also investigated. The existence of MnS clusters in the nanopores of the semiconductor zeolite was revealed by UV-Vis absorption spectroscopy, steady-state fluorescence analysis, Raman as well as Fourier transform infrared (FTIR) spectroscopy. The aggregation state of the entrapped MnS clusters at different measurement temperatures was probed by electron paramagnetic resonance (EPR) spectroscopy. Of significant importance is the fact that the entrapped MnS clusters displayed dual emissions at 518 nm (2.39 eV) and 746 nm (1.66 eV), respectively, and the long-wavelength emission has never been observed in other MnS-confined host-guest systems. These two emission peaks displayed tunable PL intensity affected by the loading level and measurement temperature. This can be explained by the different morphologies of MnS clusters with different aggregation states at the corresponding loading level or measurement temperature. The current study opens a new avenue to construct inorganic chalcogenide cluster involved host-guest systems with a semiconductor zeolite as the host matrix.
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China. wutao@suda.edu.cn.
authors.forename: Dandan
authors.initials: D
authors.lastname: Hu
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China. wutao@suda.edu.cn.
authors.forename: Yingying
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China. wutao@suda.edu.cn.
authors.forename: Jian
authors.initials: J
authors.lastname: Lin
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China. wutao@suda.edu.cn.
authors.forename: Yike
authors.initials: Y
authors.lastname: Hou
authors.affiliation: College of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, China.
authors.forename: Dongsheng
authors.identifier: http://orcid.org/0000-0003-1283-6334
authors.initials: D
authors.lastname: Li
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China. wutao@suda.edu.cn.
authors.forename: Tao
authors.identifier: http://orcid.org/0000-0003-4443-1227
authors.initials: T
authors.lastname: Wu