A lead-free red fluorescent cesium rubidium europium perovskite for the detection of tetracycline by antenna effect

IF 4.3 2区化学 Q1 SPECTROSCOPY

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-03-28 DOI:10.1016/j.saa.2025.126128

Cheng-Kang Yang , Hai-Chi Zhang , Jing Cheng , Yong-Hui Xu , Xing-Wang Liu , Xin Wang , Rong Sheng Li , Jian Ling , Qiue Cao

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Abstract

Metal halide perovskite based on caesium and lead has excellent photoelectric properties, but the toxicity of lead in perovskite structure limits its application in analytical chemistry. It is of great significance to develop lead-free perovskite. Herein, lead-free red fluorescent Cs₂RbEuCl₆ perovskite nanocrystals (PNCs) were synthesized in this paper. Cs₂RbEuCl₆ PNCs has the maximum emission peak at around 615 nm. Red fluorescence intensity of Cs₂RbEuCl₆ PNCs can be increased more than 10-fold by antenna effect between tetracycline hydrochloride and Cs₂RbEuCl₆ PNCs. Meanwhile, the fluorescence intensity of Cs₂RbEuCl₆ PNCs increased with the concentration of tetracycline hydrochloride (TCH). Further studies showed that the fluorescence enhancement rate (I/I₀) of Cs₂RbEuCl₆ PNCs was linearly correlated with the concentration range of 5.0–60.0 μM TCH. This work provides a method to enhance the red fluorescence of lead-free perovskites by antenna effect, and also demonstrates that the antenna effect between small molecules and lead-free perovskites can be used for fluorescence-enhanced detection of small molecules.

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来源期刊

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 物理-光谱学

CiteScore

8.40

自引率

11.40%

发文量

1364

审稿时长

40 days

期刊介绍： Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (SAA) is an interdisciplinary journal which spans from basic to applied aspects of optical spectroscopy in chemistry, medicine, biology, and materials science. The journal publishes original scientific papers that feature high-quality spectroscopic data and analysis. From the broad range of optical spectroscopies, the emphasis is on electronic, vibrational or rotational spectra of molecules, rather than on spectroscopy based on magnetic moments. Criteria for publication in SAA are novelty, uniqueness, and outstanding quality. Routine applications of spectroscopic techniques and computational methods are not appropriate. Topics of particular interest of Spectrochimica Acta Part A include, but are not limited to: Spectroscopy and dynamics of bioanalytical, biomedical, environmental, and atmospheric sciences, Novel experimental techniques or instrumentation for molecular spectroscopy, Novel theoretical and computational methods, Novel applications in photochemistry and photobiology, Novel interpretational approaches as well as advances in data analysis based on electronic or vibrational spectroscopy.