Benzimidazole-functionalized Zr-UiO-66 nanocrystals for luminescent sensing of Fe³⁺ in water

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• 作者：Yingying Dong^a ; Hanzhuo Zhang^a ; Fan Lei^a ; Mei Liang^a ; Xuefeng Qian^a ; Peilian Shen^a ; Hui Xu^b ; ^{huixu@cjlu.edu.cn} ; Zhihui Chen^a ; ^c ; ^{huixu.chen@gmail.com} ; Junkuo Gao^a ; ^{jkgao@zstu.edu.cn} ; Juming Yao^a
• 关键词：Metal-organic frameworks ; UiO-66 ; Nanocrystals ; Luminescent sensing
• 刊名：Journal of Solid State Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：245
• 期：Complete
• 页码：160-163
• 全文大小：628 K
• 卷排序：245

文摘

Zr-based MOF structure UiO-66 exhibits unprecedented high thermal and chemical stability, making it to be one of the most used MOFs in various applications. Yet, the poor photoluminescent (PL) properties of UiO-66 limit its applications in luminescent sensing. Herein, a new benzimidazole-functionalized UiO-66 nanocrystal (UiO-66-BI) was successfully fabricated via microwave synthesis. UiO-66-BI displayed octahedral nanocrystal morphology with a diameter smaller than 200 nm and could disperse well in water and common organic solvents. UiO-66-BI demonstrated extended optical absorption in the visible-light region and efficiently improved PL emission compared with UiO-66 pristine. The sensing properties of UiO-66-BI nanocrystals towards different ions were studied, and the results demonstrated that UiO-66-BI showed excellent selective luminescent sensing of Fe3+ ions in water.