Effects of silver nanoclusters on the spectral properties for fluorescein isothiocyanate with restrained photobleaching
Effects of silver nanoclusters on the spectral properties for fluorescein isothiocyanate with restrained photobleaching
复制标题
银纳米团簇对抑制光漂白的异硫氰酸荧光素光谱性质的影响
DOI：
10.1016/j.apsusc.2021.149287
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发表时间：
2021-02-18
影响因子：
6.7
通讯作者：
Zhang, Xinghua
中科院分区：
文献类型：
--
作者：
Shan, Pengyuan;Yang, Jiangfeng;Zhang, Xinghua
配体保护的贵金属纳米团簇具有独特的物理和化学性质，金属纳米团簇对荧光分子的光致发光和能量传递过程的影响仍不清楚。在这项工作中，我们制备了具有不同发射波长（蓝色、绿色和红色发射）的银纳米簇（Ag NCs），并研究了Ag NCs与异硫氰酸荧光素（FITC）之间的能量传递过程。由于Ag NCs和FITC之间的各种电子转移和能量转移过程，FITC的光致发光可以被Ag NCs调节。 FITC 可以作为电子供体或受体，决定 FITC 和不同发射的 Ag NC 之间的电子转移方向。令人惊讶的是，FITC与Ag NCs相互作用后可以有效抑制光漂白，这对于FITC的应用必将具有深远的意义。
Ligand protected noble metal nanoclusters have unique physical and chemical properties and the effects of metal nanoclusters on photoluminescence and energy transfer process for fluorescence molecules are still unclear. In this work, we prepared silver nanoclusters (Ag NCs) with different emission wavelengths (blue, green and red emission) and investigated the energy transfer process between Ag NCs and fluorescein isothiocyanate (FITC). The photoluminescence of FITC can be regulated by the Ag NCs due to various electrons transfer and energy transfer processes between Ag NCs and FITC. The FITC can serve as electrons donor or acceptor which determines the electrons transfer direction between FITC and Ag NCs with different emissions. Astonishingly, the photo bleaching of FITC can be effectively inhibited after interacting with Ag NCs, which will surely be of profound significance to the application of FITC.