Preparation and application of carbon dot composite materials with long-lasting phosphorescence emission under extreme acidic and alkaline conditions

IF 4.7 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-08-22 DOI:10.1016/j.jphotochem.2025.116714

Jian Wang , Lei Xue , Ling Chen , Jian Zhou

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Abstract

Carbon dots (CDs), as a novel luminescent material, have demonstrated broad application prospects in fields such as bioimaging, sensing, and information encryption. However, their room temperature phosphorescence (RTP) performance is susceptible to environmental factors (e.g., oxygen, moisture, and pH), with stability and luminescence efficiency under extreme pH conditions remaining significant challenges. In this study, a cross-linked hydrogen bond network was constructed through a one-step hydrothermal method using 3-aminophenylboronic acid and biuret as raw materials. The resulting MB-II composite material exhibits an ultra-long phosphorescence lifetime (1.48 s) and exceptional stability in aqueous solutions across a broad pH range (pH = 1–14) and organic solvents. This breakthrough surpasses the environmental adaptability limitations of current materials. The design integrates surface state engineering regulated by pH and optimized CD-matrix interactions, providing new perspectives for information encryption and biosensing under extreme conditions.

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极酸碱条件下长时间磷光碳点复合材料的制备与应用

碳点作为一种新型发光材料，在生物成像、传感、信息加密等领域有着广阔的应用前景。然而，它们的室温磷光（RTP）性能容易受到环境因素（如氧气、湿度和pH）的影响，在极端pH条件下的稳定性和发光效率仍然是一个重大挑战。本研究以3-氨基苯基硼酸和双缩脲为原料，通过一步水热法构建交联氢键网络。合成的MB-II复合材料具有超长的磷光寿命（1.48 s），在较宽pH范围（pH = 1-14）的水溶液和有机溶剂中具有优异的稳定性。这一突破突破了现有材料对环境适应性的限制。该设计集成了由pH调节的表面态工程和优化的cd -基质相互作用，为极端条件下的信息加密和生物传感提供了新的视角。

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.