Crosslink‐Enhanced Emission‐Dominated Design Strategy for Constructing Self‐Protective Carbonized Polymer Dots with Near‐Infrared Room‐Temperature Phosphorescence

Angewandte Chemie, Год журнала: 2024, Номер 136(44)

Опубликована: Авг. 7, 2024

Abstract Self‐protective carbonized polymer dots (CPDs) with advantageous crosslinked nano‐structures have attracted considerable attention in metal‐free room temperature phosphorescence (RTP) materials, whereas their RTP emissions are still limited to short wavelength. Expanding Near‐Infrared (NIR) range is attractive but suffers from the difficulties constructing narrow energy levels and inhibiting intense non‐radiative decay. Herein, a crosslink‐enhanced emission (CEE)‐dominated construction strategy was proposed, achieving desired NIR (710 nm) self‐protective CPDs for first time. Structural factors, i.e., crosslinking (covalent‐bond CEE), conjugation (conjugated amine bridging N−H C=C group), steric hindrance (confined‐domain were confirmed indispensable triggering CPDs. Contrast experiments theoretical calculations further revealed rationality of design originating CEE terms promoting level triplet excitons quenching. This work not only firstly achieves also helps understand origin guide synthesis diverse efficient long‐wavelength emission.

Язык: Английский

Graphene quantum dot @ Flower-like Bi2S3 composites for photodegradation of organic pollutants combined photosynthesis of H2 and H2O2 from treated water

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 98, С. 1464 - 1477

Опубликована: Дек. 18, 2024

Язык: Английский

Highly fluorescent fish scale-derived carbon dots for quercetin sensing

New Journal of Chemistry, Год журнала: 2024, Номер 48(38), С. 16631 - 16641

Опубликована: Янв. 1, 2024

Through modification, this work significantly enhances the quantum yield of carbon dots derived from fish scales and applies them for trace detection quercetin.

Язык: Английский