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(a) Absorption and emission spectra of DHLA-capped QDs. Fluorescence spectrum was obtained using a quartz cell with an optical path length of 1 cm, excitation wavelength at 467 nm, and 2, 2 nm slit width at the excitation and emission, respectively; (b) UV-vis and fluorescence spectra for fluorescein; (c) DHLA-capped QDs used for quantum yield measurements.
