Visible-Light-Activated Multi-Color Tunable Time-Dependent Afterglow Triggered by Variable Conjugation Effects via the Transformation of Matrix.

ABSTRACT: Achieving multi-color tunable time-dependent afterglow color (TDAC) in pure organic materials under visible light excitation remains a significant challenge. Herein, TDAC composites (CDs/U) are prepared with multi-color tunability upon visible-light excitation. Furthermore, the TDAC mechanism is the coexistence of shorter-lived afterglow and longer-lived afterglow. The long- and short-wavelength afterglow in CDs/U originate from highly conjugated nitrogen heterocyclic structures and abundant surface functional states, respectively. More impressively, p-CDs/U systems (p-phenylenediamine (p-PD) as carbon source) exhibit dynamic TDAC behaviors with different decay rates of long-wavelength red afterglow as varying the reaction temperature varies. The experimental results indicate that the tran

SUBMITTER: Xin H 

PROVIDER: S-EPMC12631833 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature