R6G@γ-CD-MOFs复合物的制备及其在Fe3+离子传感中的应用 |
Preparation of R6G@γ-CD-MOFs Composites with Application in Sensing of Fe3+ Ion |
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摘要: 利用γ-环糊精(γ-CD)、氢氧化钾、甲醇和水,制备了γ-CD-MOFs,并使用X射线粉末衍射、热重分析和扫描电镜对其结构、稳定性和形貌进行表征。由于γ-CD-MOFs的结构中含有一维孔道,在其孔道中引入黄光发射的罗丹明6G (R6G)染料,获得了荧光复合材料R6G@γ-CD-MOFs,并探索了其对不同金属离子的荧光响应情况。实验结果表明,R6G@γ-CD-MOFs能够从12种金属离子中选择性传感Fe3+离子,在2×10-4~2.0×10-2 mol·L-1范围内其荧光猝灭常数(Ksv)为1.03×104 L·mol-1。 |
关键词: R6G@γ-CD-MOFs 荧光复合材料 Fe3+离子 荧光传感 |
基金项目: 国家自然科学基金项目(No.21861044)、云南省高层次人才培养支持计划“青年拔尖人才”项目(2020)、云南省中青年学术和技术带头人后备人才项目(No.202105AC160060)、国家级大学生创新训练项目(No.201910683001)和云南省地方本科高校基础研究联合专项资金项目(No.202101BA070001-042,202101BA070001-031)资助。 |
Abstract: γ-CD-MOFs were synthesized with γ-cyclodextrin (γ-CD), potassium hydroxide, methanol, and water, whose structure, stability, and morphology were characterized by X-ray diffraction, thermogravimetric analysis, and scanning electron microscope. Due to γ-CD-MOFs having a 1D channel, rhodamine 6G (R6G) with yellow light emission was introduced into the channel, to obtain a fluorescent composite R6G@γ-CD-MOFs and its fluorescence response to different metal ions was explored. The experimental results show that R6G@γ-CD-MOFs can selectively sense Fe3+ ions from 12 kinds of metal ions, and its fluorescence quenching constant (Ksv) was 1.03×104 L·mol-1 in a range of 2×10-4-2.0×10-2 mol·L-1. |
Keywords: R6G@γ-CD-MOFs fluorescent composite Fe3+ ion fluorescence sensing |
投稿时间:2021-07-02 修订日期:2022-03-09 |
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沈燕琼,耿云超,王健波,范雪,李启彭.R6G@γ-CD-MOFs复合物的制备及其在Fe3+离子传感中的应用[J].无机化学学报,2022,38(5):800-804. |
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Support information: 相关附件: file210309_210309-Supporting_information-校稿-20220309.docx |
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