Metal nanoclusters (NCs) have emerged as a novel antibacterial agent featuring broad-spectrum antibacterial activity without drug resistance for bacteria, but suffer from fast antibacterial invalidation due to the consumption by...

Highly luminescent metal nanoclusters (MNCs) with aggregation-induced emission (AIE) have emerged as a new class of functional materials, which could be deployed to address challenging issues in diverse fields. In view of the wide application of white light-emitting diodes (WLEDs), which suffer from a low color rendering index (CRI, ≤70) and chromaticity parameter drift, we report the development of a high-performance WLED with high luminous efficiency (LE), excellent CRI attributes, and nonchromaticity parameter drift, achieved by employing AIEfeatured orange-emitting bimetallic AuAg NCs as a red phosphor. The delicately designed AuAg NCs with ultrasmall size (< 2 nm) have strong emission in the orange-light region (∼610 nm) with a large Stokes shift and more importantly show a very stable yet high absolute photoluminescence quantum yield of 43% in the solid state owing to the AIE property, which makes them suitable for constructing WLEDs for high-end lighting applications. The as-developed AuAg NC-based WLED exhibits an excellent CRI (80.6) and high LE (91.9 lm/W) without chromaticity parameter drift. This study is of broad interest because it not only demonstrates the usage of novel luminescent MNCs for WLED applications but also offers a feasible way for the design of high-performance WLEDs with a high LE, high CRI, and nonchromaticity parameter drift.

Long-lasting yet visible-light-driven bacterial inhibition is highly desired for environmental protection and public health maintenance. However, conventional semiconductors such as titanium dioxide (TiO2) are impotent for such antibacterial application due...

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The two-phase Brust-Schiffrin (B‒S) method has been widely used for synthesizing small-sized Au nanoparticles (NPs) of 2‒6 nm, as well as Au nanoclusters (NCs) of < 2 nm. However, size...