Thermochromic Luminescent Nest‐Like Silver Thiolate Cluster |
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| Authors: | Dr. Bo Li Ren‐Wu Huang Jian‐Hua Qin Prof. Shuang‐Quan Zang Dr. Guang‐Gang Gao Prof. Hong‐Wei Hou Prof. Thomas C. W. Mak |
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| Affiliation: | 1. College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001 (P.R. China);2. College of Pharmacy, Jiamusi University, Jiamusi 154004 (P. R. China);3. Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR (P.R. China) |
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| Abstract: | A novel discrete open high‐nuclearity nest‐like silver thiolate cluster complex, [Ag33S3(StBu)16(CF3COO)9(NO3)(CH3CN)2](NO3) ( 1 ), has been isolated with nitrate and S2? anions acting as structure‐directing templates. Its similar nest‐like structure has been assembled into an extended layer [Ag31S3(StBu)16(NO3)9]n ( 2 ) by adjustment of auxiliary ligand. More interestingly, both complexes exhibit temperature‐dependent luminescence of high sensitivity with a large fluorescence enhancement (12‐fold for 1 , 21‐fold for 2 ), which can be easily recognized by the naked‐eye (dramatic red‐shift Δ=104 nm for 1 , larger Δ=113 nm for 2 at 77 K compared to those at 298 K). The correlation between luminescent thermochromism and temperature‐dependent variation of the coordination modes of template NO3? anion, Ag???S and Ag???Ag distances are also elucidated through variable‐temperature single‐crystal X‐ray crystal structure (VT‐SCXRD) analyses. |
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| Keywords: | cluster compounds nest‐like structures silver template synthesis thermochromism |
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