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. 2018 Jul 16;8(15):4141–4151. doi: 10.7150/thno.27995

Figure 3.

Figure 3

NIR-II biomedical imaging with FDA-approved ICG and IRDye800CW. a-b) Chemical structures of IRDye800CW and ICG. c) Fluorescent emission spectra of NIR-I dyes captured on InGaAs photospectrometers: the silicon detector measures artificially reduced emission tails due to their low efficiency in SWIR region, while InGaAs detectors recover the true emission tail 38. d) Fluorescent emission spectra of NIR-I/II dyes past 900 nm. e) Molecular structure of NIR AIEgen (TQ-BPN). f) PL spectra of TQ-BPN in THF/H2O mixtures with different water fractions (fw). Reprinted with permission from Ref. 38 for c), Ref. 37 for d), and Ref. 61 for e-f).