Functionalized sulfonic acid groups enhance solubility and stability of graphene quantum dots for efficient photosynthesis of lettuce

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-23 DOI:10.1016/j.jphotochem.2025.116280

Junjie Yuan , Zongli Yang , Jiayi Zou , Zhongqiu Wu , Zhaolong Wang , Liang Wang , Wenlong Shen , Quan Zhang , Hui Xu

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引用次数: 0

Abstract

Graphene quantum dots exhibit outstanding fluorescence properties, low cytotoxicity, and exceptional biocompatibility when interacting with plant cells, showcasing significant potential for photosynthesis of plants, such as lettuce. However, the poor dispersion and stability in aqueous solutions have hindered its photosynthetic efficiency. To address this issue, this work demonstrated the sulfonic acid group functionalized graphene quantum dots (SAG-GQDs), in which the sulfonic acid group prominently increased hydrophilicity, thus leading to an enhanced dispersion and stability of SAG-GQDs for efficient lettuce photosynthesis. Results indicated that the functionalized SAG-GQDs with spraying concentration of 3600 mg/L displayed the best photosynthetic efficiency for lettuce growth, including net photosynthetic rate of 8.6 μmol CO₂ m⁻² s⁻¹, increased leaf fresh weight of 36%, and nutritional 14 mg/g soluble sugar with biocompatibility availability. Our work suggests the feasibility of functionalized sulfonic acid group in regulating dispersion and stability of graphene quantum dots for promoting photosynthetic efficiency of lettuce plants.

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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.