银纳米簇的光致激活产生强近红外光致发光。
The emergence of intense near-infrared photoluminescence by photoactivation of silver nanoclusters.
机构信息
Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-01921, Japan.
Institute for Molecular Science, Research Center for Computational Science, Myodaiji, Okazaki 444-8585, Japan.
出版信息
Chem Commun (Camb). 2021 Jul 1;57(53):6483-6486. doi: 10.1039/d1cc02119b.
Photoirradiation of a pyridine solution of Ag29 nanoclusters (NCs) with red photoluminescence (PL) at 680 nm activated intense PL in the near infrared (NIR) region, giving a PL quantum yield (PLQY) of 33% at 770 nm. The use of Au-doped silver NCs further boosted the PLQY to more than 45% at 800 nm. Photoirradiation is considered to induce a change in the charge localization in the NCs, leading to the formation of NIR emitting sites.
Ag29 纳米团簇（NCs）在吡啶溶液中的光辐照在 680nm 处产生红色光致发光（PL），在近红外（NIR）区域中产生强烈的 PL，在 770nm 处的 PL 量子产率（PLQY）为 33%。掺杂金的银 NCs 的使用将 PLQY 进一步提高到 800nm 处的 45%以上。光辐照被认为会导致 NCs 中电荷定位的变化，从而形成发射近红外光的位点。
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