Photoluminescence and Fluorescence Quenching of Graphene Oxide: A Review.
Photoluminescence and Fluorescence Quenching of Graphene Oxide: A Review.
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DOI：
10.3390/nano12142444
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发表时间：
2022-07-17
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影响因子：
--
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中科院分区：
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近几十年来，光致发光（PL）材料因其优异的光学性能而成为研究的热点。氧化石墨烯（GO）由于其独特的光学性质，与纯石墨烯相比，是一种很好的PL材料的候选者。GO内部带隙的存在可以显著丰富其光学性质。因此，GO在材料科学、生物医学、防伪等领域有着广泛的应用。近十年来，GO和量子点作为发光材料引起了众多研究者的关注，但其发光机理仍不明确，虽然取得了一定的理论成果。此外，GO和GOQD具有荧光猝灭特性，可用于医学成像和生物传感器。本文综述了GO和GOQD的光致发光现象和猝灭过程的研究进展。首先，深入讨论了GO的发光机理。其次，介绍了GO的荧光猝灭机理及调控。接着介绍了GO的光致发光和荧光猝灭在生物医学、电子器件、材料成像等方面的应用。最后，展望了GO的发光和荧光猝灭研究的发展方向，并对GO光学性质研究面临的挑战进行了总结。
In recent decades, photoluminescence (PL) material with excellent optical properties has been a hot topic. Graphene oxide (GO) is an excellent candidate for PL material because of its unique optical properties, compared to pure graphene. The existence of an internal band gap in GO can enrich its optical properties significantly. Therefore, GO has been widely applied in many fields such as material science, biomedicine, anti-counterfeiting, and so on. Over the past decade, GO and quantum dots (GOQDs) have attracted the attention of many researchers as luminescence materials, but their luminescence mechanism is still ambiguous, although some theoretical results have been achieved. In addition, GO and GOQDs have fluorescence quenching properties, which can be used in medical imaging and biosensors. In this review, we outline the recent work on the photoluminescence phenomena and quenching process of GO and GOQDs. First, the PL mechanisms of GO are discussed in depth. Second, the fluorescence quenching mechanism and regulation of GO are introduced. Following that, the applications of PL and fluorescence quenching of GO–including biomedicine, electronic devices, material imaging–are addressed. Finally, future development of PL and fluorescence quenching of GO is proposed, and the challenges exploring the optical properties of GO are summarized.
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影响因子：
2.1
作者：
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