Статья

Cesium Lead Halide Perovskite Quantum Dots as a Photoluminescence Probe for Metal Ions

Xuexi ShengJiangsu Key Laboratory of Biofunctional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing 210046 P. R. ChinaYing LiuJiangsu Key Laboratory of Biofunctional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing 210046 P. R. ChinaYu WangJiangsu Key Laboratory of Biofunctional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing 210046 P. R. ChinaYafei LiJiangsu Key Laboratory of Biofunctional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing 210046 P. R. ChinaXun WangKey Lab of Organic Optoelectronics and Molecular Engineering Department of Chemistry Tsinghua University Beijing 100084 P. R. ChinaXinping WangKey Lab of Organic Optoelectronics and Molecular Engineering Department of Chemistry Tsinghua University Beijing 100084 P. R. ChinaXinping WangKey Lab of Organic Optoelectronics and Molecular Engineering Department of Chemistry Tsinghua University Beijing 100084 P. R. ChinaZhihui DaiJiangsu Key Laboratory of Biofunctional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing 210046 P. R. ChinaJianchun BaoJiangsu Key Laboratory of Biofunctional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing 210046 P. R. ChinaXiangxing XuJiangsu Key Laboratory of Biofunctional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing 210046 P. R. China

2017en

ABI

Аннотация

Perovskite structured CsPbX 3 (X = Cl, Br or I) quantum dots (QDs) have attracted great attention in the past few years for appealing application potentials in photovoltaic and optoelectronic devices. In this report, the CsPbX 3 QDs are shown to perform as a new probe for metal ions with high sensitivity, high selectivity and instant response by the quenching or enhancing of the photoluminescence (PL). Through experimental and calculation efforts, the probing mechanisms are investigated. A wide probing window for Cu 2+ and Yb 3+ ions ranging from 2 × 10 −9 to 2 × 10 −6 m is exhibited for CsPbBr 3 QDs. In practice, the CsPbBr 3 QDs are successfully applied for fast probing Cu 2+ ions in edible oils and vehicle lubricating oils with the precision consistent to the values measured by inductively coupled plasma (ICP). Thus, it provides a promising powerful tool in detecting certain metal ions in biological and industrial organic solution systems.

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Идентификаторы

DOI: 10.1002/adma.201700150

Цитирования и источники

Цитирований: 3Использованных источников: 0

Показатели — AkademScholar