In situ coupling of carbon dots with zeolitic imidazolate frameworks enabling highly red emission in solid state

Wen Wang; Jinbao Wei; Yutong Ding; Yike Yang; Xin Zhou; Hong-Min Meng; Qianqian Zhu; Zhaohui Li

doi:10.1016/j.saa.2024.124235

In situ coupling of carbon dots with zeolitic imidazolate frameworks enabling highly red emission in solid state

Spectrochim Acta A Mol Biomol Spectrosc. 2024 Jul 5:315:124235. doi: 10.1016/j.saa.2024.124235. Epub 2024 Apr 1.

Authors

Wen Wang¹, Jinbao Wei², Yutong Ding², Yike Yang¹, Xin Zhou², Hong-Min Meng³, Qianqian Zhu⁴, Zhaohui Li²

Affiliations

¹ Department of Criminal Science and Technology, Henan Police College, Zhengzhou 450046, China.
² College of Chemistry, Institute of Analytical Chemistry for Life Science, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou Key Laboratory of Functional Nanomaterial and Medical Theranostic, Zhengzhou University, Zhengzhou 450001, China.
³ College of Chemistry, Institute of Analytical Chemistry for Life Science, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou Key Laboratory of Functional Nanomaterial and Medical Theranostic, Zhengzhou University, Zhengzhou 450001, China. Electronic address: hmmeng2017@zzu.edu.cn.
⁴ College of Chemistry, Institute of Analytical Chemistry for Life Science, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou Key Laboratory of Functional Nanomaterial and Medical Theranostic, Zhengzhou University, Zhengzhou 450001, China. Electronic address: zhuqian500@126.com.

PMID: 38599022
DOI: 10.1016/j.saa.2024.124235

Abstract

In this work, an extraordinary solid red emissive phosphor was prepared based on red-emitting carbon dots (R-CDs). The synthesis was conducted under an in-situ strategy, with assistance of zeolitic imidazolate frameworks. The obtained phosphor possesses a stronger red emission located at 630 nm in solid state, with CIE coordinate of (0.63, 0.35) and quantum yield of ∼ 45 %. As a consequence, not only aggregation-induced fluorescence quenching of R-CDs is avoided in solid state, but also an enhanced emission with high quantum yield is presented. Fluorescence properties were further explored in detail. The emission is found to be responsive to temperature and applied pressure. Based on the excellent emissive performance, the material has great potentials in anti-counterfeiting, latent fingerprint imaging, and temperature/pressure-sensing. This work provides a facile and promising way of preparing solid carbon-based phosphors for special applications.

Keywords: Carbon dots; Long-wavelength emission; Pressure; Solid-state fluorescence; Temperature.