Water-soluble Ag nanoclusters exhibit strong two-photon-induced fluorescence.

Water-soluble Ag nanoclusters exhibit strong two-photon-induced fluorescence.
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DOI:
10.1021/ja804710r
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发表时间:
2008-09-03
影响因子:
15
通讯作者:
Dickson, Robert M.
Dickson, Robert M.
中科院分区:
化学1区
文献类型:
--
作者:
Patel, Sandeep A.;Richards, Chris I.;Hsiang, Jung-Cheng;Dickson, Robert M.

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水溶性ssdna封装的银团簇显示出大的双光子截面,达到50000 GM,在红色和近红外波段具有高量子产率。三种不同的、光谱上纯净的、发射波长分别为660、680和710纳米的原子团簇已经被制造出来,它们的双光子横截面可以与更大的水溶性半导体量子点相媲美。它们的稳定性、生物相容性和小尺寸为无毒、灵敏的高分辨率生物成像提供了希望。
Water-soluble ssDNA-encapsulated Ag clusters exhibit large two-photon cross sections reaching 50 000 GM, with high quantum yields in the red and near-IR. Three distinct, spectrally pure, several atom clusters emitting at 660, 680, or 710 nm have been created with two-photon cross sections rivaling those of much larger water-soluble semiconductor quantum dots. Their stability, biocompatibility, and small size offer the promise of nontoxic, sensitive high-resolution biological imaging.
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