中文关键词:纳米材料上转换纳米颗粒合成掺杂比优化光敏剂单线态氧 英文关键词:nanomaterialsupconversion nanoparticlessynthesisdoping ratiooptimizationphotosensitizersinglet oxyge 基金项目:山东省自然科学基金项目(ZR2017LB028)、山东省重点研发计划项目(2018GSF118032)和中央高校基本科研业务费专项资金(18CX02125A)资助

作者	单位	E-mail
陈钰雪	中国石油大学华东重质油国家重点实验室及生物工程与技术中心	2576219814@qq.com
燕照霞	中国石油大学华东重质油国家重点实验室及生物工程与技术中心
姜 磊	中国石油大学华东重质油国家重点实验室及生物工程与技术中心	leijiang@upc.edu.cn

摘要点击次数:110 全文下载次数:0 中文摘要: 以NaYF₄材料为基质的上转换纳米颗粒是最早报道的、应用范围最广的上转换材料之一。掺杂了不同稀土离子的颗粒不但可以在不同激发条件下发射出不同波长和强度的荧光,而且可以与多种光敏分子搭配使用,通过荧光共振能量转移产生单线态氧,实现生物医学成像或诊疗方面的应用。但是其形貌和荧光性能均受制备方法和工艺条件的影响较大。本文通过水热法合成了两种掺杂不同稀土离子的十种NaYF₄ UCNPs,在保持掺杂离子的终浓度不变的条件下,探究离子类型与比例对纳米材料在结构和上转换发光性能的影响。在此基础上,探索了多种卟啉类光敏剂分子与NaYF₄ UCNPs发生能量转换及产生单线态氧的效率,为基于NaYF₄材料的上转换颗粒的规模化制备和工艺升级提供了数据支撑和理论参考。 英文摘要: Upconversion nanoparticles (UCNPs) based on NaYF₄ are one of the earliest reported and widely used upconversion materials. The particles doped with different rare earth ions can not only emit different wavelengths and intensities of fluorescence under different excitation conditions, but also can be used with a variety of photosensitive molecules to produce singlet oxygen through fluorescence resonance energy transfer, which can realize the application of biomedical imaging or diagnosis and treatment. However, the morphology and fluorescence properties are greatly affected by the preparation method and process conditions. In this paper, two kinds of NaYF₄ UCNPs doped with different rare earth ions were synthesized by hydrothermal method. Under the condition of keeping the final concentration of doped ions unchanged, the effects of ion type and proportion on the structure and upconversion luminescence properties of nanomaterials were investigated. On this basis, the efficiency of energy conversion and singlet oxygen generation between various porphyrin photosensitizer molecules and NaYF₄ UCNPs was explored, which provided data support and theoretical reference for the large-scale preparation and process upgrading of NaYF₄ based UCNPs. 查看全文查看/发表评论下载PDF阅读器 相关附件：版权转让声明书 -->