Fig. 5: Proposed photophysical mechanism for solvent-modulated emission tuning in AuH₂O NCs. | Nature Communications

Fig. 5: Proposed photophysical mechanism for solvent-modulated emission tuning in AuH₂O NCs.

From: Solvation-mediated isomerization of surface motifs tunes emissions and electron transfer dynamics in gold nanoclusters

Fig. 5: Proposed photophysical mechanism for solvent-modulated emission tuning in AuH₂O NCs.The alternative text for this image may have been generated using AI.

a The excited-state electron relaxation of PL I and PL II in AuH₂O NCs in aqueous solution (drew in Adobe Illustrator). b The excited-state electron relaxation of PL I and the evolution of the terminal domain on the AuH₂O NCs in organic solvents (drew in Adobe Illustrator). In the energy level diagram, the dark and light gray shaded areas represent the intermediate energy level of the T1 state and the light-emitting energy level of ETS in AuH₂O NCs with R1 domain, respectively. The red shaded area represents the light-emitting energy level of the T1 state in AuH₂O NCs with R2 domain. In the spectrum, the gray and reddish-brown shaded areas represent the PLI and PLII bands, respectively. S0: ground state, Sn: high-energy singlet state, S1: lowest singlet state, T1: lowest triplet state, ETS: electron transfer state, IC: internal conversion, ISC: the intersystem crossing, PCET: proton-coupled electron transfer. Source data are provided as a Source Data file.

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