Tailored Fabrication of Carbon Dot Composites with Full-Color Ultralong Room-Temperature Phosphorescence for Multidimensional Encryption.

ABSTRACT: Ultralong room-temperature phosphorescence (RTP) is highly useful for information encryption, organic electronics, bioelectronics, etc. However, the preparation of related metal-free materials with multiple colors across the full spectrum remains a major challenge. Herein, a facile method is developed to fabricate boron-doped carbon dot (B-CD) composites with full-color long lifetime RTP continuously tailorable in the range of 466-638 nm simply by pyrolysis of the citric acid and boric acid precursors with various mass ratios at different temperatures. This leads to the formation of luminescent B-CD centers in a rigid polycrystalline B₂ O₃ matrix, which effectively stabilizes the triplet excited states of B-CDs. Thus, the composites become phosphorescent over a relati

SUBMITTER: Ding Y 

PROVIDER: S-EPMC8787396 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature