A. M. Vervald, K. A. Laptinskiy, M. Yu. Khmeleva, T. A. Dolenko
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引用次数: 0
Abstract
Hydrothermal treatment of a mixture of citric acid (CA) and ethylenediamine (EDA) is known for production of carbon dots (CDs) with intense photoluminescence (PL) in the blue region with a quantum yield up to ∼95%. However, the specific result of the synthesis depends significantly on treatment’s parameters. In this manuscript, by studying CDs synthesized from an EDA : CA mixture of 1 : 1 at temperatures of 80, 140, or 200°C for 0.5–6 h, it was found that, in addition to the main PL peak with a maximum in the region of λex/λem 350/440 nm/nm, 6 different peaks with lower PL intensity are observed at different stages of the synthesis, corresponding to different luminophores. The parameters and conditions of formation of these luminophores were studied, the quantum yields of their luminescence obtained.
期刊介绍：
Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular, letters to the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.
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