Fe掺杂CuS纳米颗粒的合成及其在光热/化学动力学联合治疗中的应用
Synthesis of Fe-doped CuS nanoparticles for the combination of photothermal and chemodynamic therapy
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孙博 南京邮电大学信息材料与纳米技术研究院, 有机电子与信息显示国家重点实验室, 南京 210023  
赵宁 南京邮电大学信息材料与纳米技术研究院, 有机电子与信息显示国家重点实验室, 南京 210023  
徐欣 南京邮电大学信息材料与纳米技术研究院, 有机电子与信息显示国家重点实验室, 南京 210023  
姜来 南京邮电大学信息材料与纳米技术研究院, 有机电子与信息显示国家重点实验室, 南京 210023  
陆峰 南京邮电大学信息材料与纳米技术研究院, 有机电子与信息显示国家重点实验室, 南京 210023 iamflu@njupt.edu.cn 
范曲立 南京邮电大学信息材料与纳米技术研究院, 有机电子与信息显示国家重点实验室, 南京 210023 iamqlfan@njupt.edu.cn 
黄维 南京邮电大学信息材料与纳米技术研究院, 有机电子与信息显示国家重点实验室, 南京 210023
西北工业大学柔性电子研究院, 西安 710072 
 
摘要: 以乙酰丙酮铜和硫粉为铜源和硫源,在油酸(OA)-油胺(OM)-十八烯(ODE)体系中合成了近红外吸收的硫化铜(CuS)纳米颗粒,并通过改变硫元素活化状态的方式调节其吸收峰到适合光热治疗的1 064 nm附近。通过阳离子交换法进一步制备了Fe、Mn等元素掺杂的CuS纳米颗粒,并保持其吸收峰位置几乎不变。使用微乳法进行聚乙二醇(PEG)化修饰后,这些纳米颗粒在水溶液中表现出良好的分散性和稳定性。分别测试了CuS纳米颗粒在Fe3+掺杂前后的光热性能及羟基自由基(·OH)生成能力。结果表明,PEG修饰后Fe3+掺杂的CuS纳米颗粒(CuS∶Fe-PEG)在1 064 nm处的质量消光系数为37.5 L·g-1·cm-1,光热转换效率可达43.7%。虽然光热性能略低于未掺杂的CuS-PEG,但其·OH生成能力有大幅提升。细胞实验也表明,在弱酸性条件下,CuS∶Fe-PEG具有更好的肿瘤细胞抑制能力,在1064 nm激光照射下能够有效杀死肿瘤细胞,可用于光热/化学动力学联合治疗。
关键词: 硫化铜  阳离子交换  光热治疗  芬顿反应
基金项目: 国家自然科学基金(No.21975131)和南京邮电大学引进人才科研启动基金(No.NY221130)资助。
Abstract: Copper sulfide (CuS) nanoparticles with strong absorption in the near-infrared region were synthesized in oleic acid (OA)-oleylamine (OM)-octadecene (ODE) system using copper acetylacetonate and sulfur powder as copper and sulfur sources respectively.By adjusting the activation solvent for the sulfur powder,the absorption peak can be tuned to around 1 064 nm which was beneficial for photothermal therapy.The Fe and Mn elements doped CuS nanoparticles were further prepared by the cation exchange approach,and the absorption peak can be retained after the reaction.Then,these hydrophobic nanoparticles were transferred into an aqueous solution by the microemulsion method,the obtained PEGylated (PEG=poly (ethylene glycol)) nanoparticles exhibited excellent dispersity and colloidal stability.Their photothermal performance and the hydroxyl radical (·OH) production before and after Fe3+ doping were investigated thereafter.The mass extinction coefficient of Fe3+ doped CuS nanoparticles after PEGylation (CuS∶FePEG) at 1064 nm was 37.5 L·g-1·cm-1,with a high photothermal conversion efficiency of around 43.7%.Although these values were slightly decreased compared with undoped CuS-PEG,their ability to produce ·OH was significantly improved.A higher inhibition ratio of cancer cells was observed with CuS∶FePEG nanoparticles under weak acid condition.And under 1 064 nm laser,these nanoparticles can kill cancer cells more effectively.Therefore,the prepared CuS∶Fe-PEG nanoparticles can be used for the combination of photothermal and chemodynamic therapy.
Keywords: CuS  cation exchange  photothermal therapy  Fenton reaction
投稿时间:2022-10-12 修订日期:2023-02-10
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孙博,赵宁,徐欣,姜来,陆峰,范曲立,黄维.Fe掺杂CuS纳米颗粒的合成及其在光热/化学动力学联合治疗中的应用[J].无机化学学报,2023,39(4):671-679.
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