1690-Fold enhanced electrochemiluminescence of gold nanoclusters <i>via</i> Zn²⁺ induced aggregation.

ABSTRACT: Herein, a zinc ion (Zn²⁺)-induced aggregation strategy is proposed for 1690-fold enhanced electrochemiluminescence (ECL) from d-penicillamine (DPA)-capped gold nanoclusters (AuNCs), and the aggregation-induced ECL (AIECL) is a multiplicative effect of two enhancing factors. One is the improved ligand rigidification of Zn²⁺-induced aggregation of AuNCs, i.e. Zn²⁺-AuNCs. The Zn²⁺ of Zn²⁺-AuNCs can reduce the vibration and rotation of DPA, suppress non-radiative decay, and result in ∼17-fold enhanced emission with photoluminescence (PL) as control. The other is the promoted electron transfer by Zn²⁺-DPA bonds, which can enhance charge annihilation with the assistance of energy level alignment between AuNCs and the Zn

SUBMITTER: Wang Y 

PROVIDER: S-EPMC12573880 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature