文献类型：期刊文献

英文题名：Effect of Polymer Concentration and Surface Charge on Controllable Nanopesticides Delivery

作者：Cao, Ran[1,2,3];Wu, Yue[1,2,3,4,5,6];Xu, Nuo[1,2,3];Zhang, Yutao[4,5,6];Guo, Zhiqian[4,5,6];Xu, Yisheng[1,2,3]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Green Chem Engn & Ind Catalysis, Shanghai 200237, Peoples R China;[2]Guangxi Lab Low Carbon Technol & Green Chem Adv Ma, Qinzhou 535008, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn & Low Carbon Technol, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, MOE Joint Int Res Lab Precis Chem & Mol Engn, Shanghai 200237, Peoples R China;[6]East China Univ Sci & Technol, Inst Fine Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2026

卷号：18

期号：13

外文期刊名：POLYMERS

收录：;EI(收录号：20263021164748);Scopus(收录号：2-s2.0-105045375947);WOS:【SCI-EXPANDED(收录号:WOS:001818470600001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (22378126, 22225805, 32394001, and 32121005), the National Key Research and Development Program (2023YFA1802000, 2021YFE0100400), the Guangxi Science and Technology Innovation Platform Program ("Leitai" Action Plan-Guangxi Laboratory Capacity Building) (LT2504240015), and the Science and Technology Innovation Plan of Shanghai Science and Technology Commission (22501100500).

语种：英文

外文关键词：nanopesticides; NIR-II fluorescence; flash nanoprecipitation; surface charge

摘要：The efficacy of polymer-based nanopesticides (NPs) is strongly governed by carrier concentration and surface charge, which affect shell thickness, drug release kinetics, and photostability. However, the influence of these two factors in pesticide release and delivery performance remains unclear. This study introduces a NIR-II fluorescence dye-tracing strategy to enable high-resolution monitoring of NP behavior in model plants. By systematically varying polymer concentration and copolymer blocks, we investigate their impact on release behavior, photostability, and stem uptake. As the polymer concentration increased, NPs demonstrated a controlled slow release and better photostability, yet a lower pesticide loading capability. In model plants, PISNPs transport quickly and can accumulate at wound sites, effectively offering antifungal properties. This work provides experimental evidence for optimizing polymer carrier design to achieve efficient, controlled release while minimizing photodegradation risks, offering practical guidelines for developing high-performance, low-risk nanopesticide formulations.