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Luminescence Regulation of Silver‐Thiolate Clusters Protected by 1,2‐Dithiolate‐o‐carborane
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2020-07-06 , DOI: 10.1002/cjoc.202000250
Li‐Juan Liu 1 , Thomas C. W. Mak 1, 2 , Shuang‐Quan Zang 1
Affiliation  

Engineering the surface of the metal clusters with the core structure maintained and tuning their luminescence in a wide range is still a challenge in the nanomaterial research. We modified six mono‐pyridyl ligands with different electronic effects (conjugation effect or induction effect) on a superatomic silver cluster [Ag14(C2B10H10S2)6(CH3CN)8] (denoted as Ag14) through in situ site‐specific surface engineering, and obtained the corresponding clusters [Ag14(C2B10H10S2)6(CH3CN)6(L1/L2)2] (denoted as NC‐1, 2, L1/L2 = 4‐acetylpyridine/ 4‐carboxypyridine) and [Ag14(C2B10H10S2)6(L3/L4/L5/L6)8] (denoted as NC‐3, 4, 5, 6, L3/L4/L5/L6 = 4‐phenylpyridine/4‐(1‐naphthyl)pyridine/9‐(4‐pyridine)anthracene/9‐(4‐pyridine)pyrene). Through the modification of the Ag14 cluster, a wide‐range luminescence from blue to red was realized. This work might provide a practical guide for improving the emission performance of metal clusters via surface engineering.

中文翻译:

1,2-二硫代磺酸盐-邻-碳硼烷保护的硫氰酸银簇的发光调控

在纳米材料研究中,在保持核心结构的情况下对金属团簇表面进行工程设计并在很大范围内调节其发光度仍然是一个挑战。我们在超原子银团簇[Ag 14(C 2 B 10 H 10 S 26(CH 3 CN)8 ](表示为Ag 14)上修饰了六个具有不同电子效应(共轭效应或诱导效应)的单吡啶基配体。通过原位位点特异性表面工程,并得到相应的簇将[Ag 14(C 210 ħ 10小号26(CH 3 CN)6(L 1 / L 22 ](表示为NC-1,2,L 1 / L 2 = 4-乙酰吡啶/ 4-羧基吡啶)和[Ag 14(C 2 B 10 H 10 S 26(L 3 / L 4 / L 5 / L 68 ](表示为NC-3、4、5、6,L 3 / L 4 / L 5 / L 6= 4-苯基吡啶/ 4-(1-萘基)吡啶/ 9-(4-吡啶)蒽/ 9-(4-吡啶)py)。通过修改Ag 14团簇,实现了从蓝色到红色的宽范围发光。这项工作可能为通过表面工程改善金属团簇的排放性能提供实用指南。
更新日期:2020-07-06
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