高荧光量子产率的二硫化钼量子点制备及荧光性能研究

材料导报

2021, Vol. 35

Issue (z2): 13-17

无机非金属及其复合材料

高荧光量子产率的二硫化钼量子点制备及荧光性能研究

韦亦泠^1,2, 邓文江^1,2, 金彩虹^1,2, 李慧^1,2, 王传明^1,2, 孟铁宏^1,2, 张文娟³, 赵鸿宾^1,2, 帅光平^1,2, 杨政敏^1,2, 李春荣^1,2, 胡先运^1,2,3,4

1 黔南民族医学高等专科学校基础医学部,都匀 558000
2 黔南州民族药纳米医药协同创新中心,都匀 558000
3 黔南民族医学高等专科学校附属医院,都匀 558000
4 贵州省中国科学院天然产物化学重点实验室,贵阳 550014

Preparation and Fluorescent Properties of Molybdenum Disulfide Quantum Dots With High Fluorescence Quantum Yield

WEI Yiling^1,2, DENG Wenjiang^1,2,JIN Caihong^1,2, LI Hui^1,2,WANG Chuanming^1,2,MENG Tiehong^1,2, ZHANG Wenjuan³, ZHAO Hongbin^1,2, SHUAI Guangping^1,2, YANG Zhengmin^1,2, LI Chunrong^1,2, HU Xianyun^1,2,3,4

1 Qiannan Medical College for Nationalities,Duyun 558000, China
2 The Collaborative Innovation Center of Qiannan State for Ethnic and Nano Medicine, Duyun 558000, China
3 Affiliated Hospital of Qiannan Medical for Nationalities, Duyun 558000, China
4 The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences,Guiyang 550014, China

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摘要二硫化钼量子点(MoS₂ QDs)具有优良物理、化学等特性,在催化、荧光成像和荧光传感及生物成像等方面具有潜在的应用前景,然而其制备方法及量子产率仍有改进空间。本工作以钼酸钠提供钼源,谷胱甘肽提供硫源,通过“自下而上”一步水热法制备MoS₂ QDs,并以其荧光强度作为指标,采用单因素分析,优化MoS₂ QDs制备条件中的钼源与硫源比例、pH值、反应时间、反应温度。结果表明,最佳钼源与硫源质量比例为1∶3.5、最佳pH值为4-8之间、反应时间18 h、反应温度210 ℃。采用正交试验的方法,优化出MoS₂ QDs的最佳制备条件为:反应时间30 h、反应温度220 ℃、钼源与硫源比例为1∶3.5、pH值为3,荧光量子产率高达21％。所制备MoS₂ QDs的粒径4.0±0.35 nm,且单分散,富含氨基和羧基官能团,紫外吸收峰336 nm;发射波长为424 nm;半峰宽79 nm。可为MoS₂ QDs在高灵敏的离子、生物分子检测以及低毒的细胞成像打下基础。

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	韦亦泠
	邓文江
	金彩虹
	李慧
	王传明
	孟铁宏
	张文娟
	赵鸿宾
	帅光平
	杨政敏
	李春荣
	胡先运

关键词: 二硫化钼量子点条件优化制备方法荧光性能荧光量子产率

Abstract: Molybdenum disulfide quantum dots (MoS₂ QDs) have excellent physical and chemical properties, which have potential great applications in catalysis, fluorescent imaging, fluorescent sensing and biological imaging, etc. However, its preparation methods and quantum yield still need further improvement. In this paper, MoS₂ QDs were prepared by using sodium molybdate as molybdenum source and glutathione as sulfur source by one pot “bottom-up” hydrothermal approach, and its fluorescent intensity was used as the monitoring index. The single factor analysis was adopted to optimize the proportion of molybdenum and sulfur source, pH value, reaction time and reaction temperature.The results showed that the best molybdenum and sulfur source ratio was 1∶3.5, the best pH value was between 4-8, the best reaction time was 30 h, the best reaction temperature was 210 ℃. The reaction conditions were also optimized by orthogonal experiment, the optimum reaction conditions was that reaction time was 30 h, reaction temperature was 220 ℃, molybdenum and sulfur source ratio was 1∶3.5, pH value was 3, the best fluorescent quantum yield of MoS₂ QDs was about 21%. The MoS₂ QDs had mono- disperse, those particle size was (4.0 ± 0.35) nm, and being rich in a mino and carboxyl functional groups. Its UV absorption peak was 336 nm, FL emission wavelength was 424 nm, and full width at half maxima was 79 nm. It can lay a foundation for the highly sensitive ion and biomolecular detection of MoS₂ QDs and low toxicity cell imaging.

Key words: molybdenum disulfide quantum dots condition optimization preparation method fluorescent properties fluorescence quantum yield

发布日期: 2021-12-09

ZTFLH:	TN304.2
	TQ422

基金资助: 国家自然科学基金项目(81860317);贵州省自然科学基金(黔科合支撑〔2019〕2821号;黔科合基础〔2016〕1136号;黔科合基础〔2019〕1301号);黔南科技计划项目(黔南州科合社字〔2016〕12号;黔南科合社字〔2014〕8号);贵州省卫生厅校联合基金(gzwkj2012-2-017)以及黔南民族医专科研基金(qnyz201947;qnyz201921;qnyz201801;qnyz201807;qnyz201843)

通讯作者: huxianyun2004@163.com

作者简介: 韦亦泠,硕士,讲师,2019年于福建师范大学获得硕士学位,主要从事细胞生物学、细胞信号通路、生物活性物质方面的研究。
胡先运,博士,教授,2018年于东南大学获得博士学位,主要从事民族药纳米医药、纳米材料的研究。
邓文江,主要研究新型荧光量子点、体内药物代谢、化合物的提取、分离、检测等方面。
金彩虹,主要研究药物检测、荧光量子点、茶叶工艺优化、化合物的组成等方面。

引用本文:

韦亦泠, 邓文江, 金彩虹, 李慧, 王传明, 孟铁宏, 张文娟, 赵鸿宾, 帅光平, 杨政敏, 李春荣, 胡先运. 高荧光量子产率的二硫化钼量子点制备及荧光性能研究[J]. 材料导报, 2021, 35(z2): 13-17.
WEI Yiling, DENG Wenjiang,JIN Caihong, LI Hui,WANG Chuanming,MENG Tiehong, ZHANG Wenjuan, ZHAO Hongbin, SHUAI Guangping, YANG Zhengmin, LI Chunrong, HU Xianyun. Preparation and Fluorescent Properties of Molybdenum Disulfide Quantum Dots With High Fluorescence Quantum Yield. Materials Reports, 2021, 35(z2): 13-17.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2021/V35/Iz2/13

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