title: Ag₂Se quantum dots with tunable emission in the second near-infrared window.
abstract: Quantum dots (QDs) with fluorescence in the second near-infrared window (NIR-II, 1000-1400 nm) are ideal fluorophores for in vivo imaging of deep tissue with high signal-to-noise ratios. Ag₂Se (bulk band gap 0.15 eV) is a promising candidate for preparing NIR-II QDs. By using 1-octanethiol as ligand to effectively balance the nucleation and growth, tuning the fluorescence of Ag₂Se QDs was successfully realized in the NIR-II window ranged from 1080 to 1330 nm. The prepared Ag₂Se QDs can be conveniently transferred to the aqueous phase by ligand exchange, showing great potential for multicolor NIR-II fluorescence imaging in vivo.
authors: Chun-Nan
authors: CN
authors: Zhu
authors: Peng
authors: P
authors: Jiang
authors: Zhi-Ling
authors: ZL
authors: Zhang
authors: Dong-Liang
authors: DL
authors: Zhu
authors: Zhi-Quan
authors: ZQ
authors: Tian
authors: Dai-Wen
authors: DW
authors: Pang