journal article·2024-10-11

Na-Doped Carbon Dots with Room-Temperature Phosphorescence for Information Encryption

Hao Hu, Xia Zhao, Xiang Mao, Yongrun Dong, Wen Li, Zequan Li, Wei Gao

ACS Applied Nano Materials· Volume 7· Issue 19
Publisher page

Abstract

Room temperature phosphorescence (RTP) provides a longer and tunable afterglow time compared to conventional fluorescence, enabling complex information encryption effects. However, traditional RTP materials have a short afterglow, and acquiring the requisite raw materials is challenging. In this study, RTP carbon dots (CDs) were synthesized using a multifaceted method, achieving an extended lifetime of 743.55 ms. The afterglow duration of 23.5 s under 254 nm excitation. Additionally, the afterglow intensity was enhanced through Na doping. Notably, the B 2 O 3 matrix confine the vibration and rotation of the CDs chromophores. Mechanisms such as hydrogen bonding and covalent bonding collectively mitigate nonradiative decay of the triplet exciton. Furthermore, the potential application of these materials in information encryption is demonstrated. This investigation serves as a valuable reference for enhancing the afterglow properties and applications of RTP-CDs.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Carbon and Quantum Dots Applications · Luminescence and Fluorescent Materials · Nanocluster Synthesis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Resources, Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China

Guangxi Engineering and Technology Research Center for High Quality Structural Panels from Biomass Wastes, Nanning 530004, Guangxi, China

State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China

Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning 530004, Guangxi, China

Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning 530004, Guangxi, China

Funding

Guangxi Key Research and Development Program · Scientific Research and Technology Development Program of Guangxi Zhuang Autonomous Region · Guangxi Fucheng Furniture Group Co., Ltd

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