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. 2018 Apr 23;10(3):48. doi: 10.1007/s40820-018-0202-8

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© The Author(s) 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 1 — a, b AFM images and c, d thickness profiles of MoS₂ (a, c) and MoS₂–ICG (b, d). e Absorbance spectra of MoS₂ and MoS₂–ICG at the same concentration of MoS₂. f Fluorescence spectra of free ICG and MoS₂–ICG at the same concentration of ICG