Fig. 2: H2O-modulated electron transfer from native NCs state to trap state.
From: Lighting up metal nanoclusters by the H2O-dictated electron relaxation dynamics
a Streak camera images of AuAg-D, AuAg-H, and AuAg-S NCs (from left to right) upon 400 nm laser pumping. b PL decay curves monitored at 480 nm in the streak camera images of AuAg-D, AuAg-H, and AuAg-S NCs, and their corresponding fitting results. c Femtosecond-TA spectra of AuAg-D, AuAg-H, and AuAg-S NCs recorded at different delay times. The scaling of the color scales is the absorption intensity, and its unit is milli-optical density (mOD). The excitation source is a 365 nm laser. d Time constants obtained from kinetic fittings of TA spectra at different monitoring wavelengths. e Decay kinetics and corresponding fittings of AuAg-D, AuAg-H, and AuAg-S NCs extracted from their femtosecond-TA maps. f The proposed diagram illustrates the critical mechanism of tailoring trap-state emission with water molecules. Source data are provided as a Source Data file.
