skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Benzimidazole-functionalized Zr-UiO-66 nanocrystals for luminescent sensing of Fe{sup 3+} in water

Abstract

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 Fe{sup 3+} ions in water.

Authors:
; ; ; ; ;  [1];  [2];  [1];  [3];  [1];  [1]
  1. The Key laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, National Engineering Lab for Textile Fiber Materials and Processing Technology (Zhejiang), College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018 (China)
  2. Institute of Coordination Bond Metrology and Engineering, College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018 (China)
  3. (China)
Publication Date:
OSTI Identifier:
22658152
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 245; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; BENZIMIDAZOLES; EXPERIMENTAL DATA; IRON IONS; MICROWAVE RADIATION; NANOSTRUCTURES; ORGANIC SOLVENTS; SYNTHESIS; ZIRCONIUM COMPOUNDS

Citation Formats

Dong, Yingying, Zhang, Hanzhuo, Lei, Fan, Liang, Mei, Qian, Xuefeng, Shen, Peilian, Xu, Hui, E-mail: huixu@cjlu.edu.cn, Chen, Zhihui, E-mail: huixu.chen@gmail.com, Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, Gao, Junkuo, E-mail: jkgao@zstu.edu.cn, and Yao, Juming. Benzimidazole-functionalized Zr-UiO-66 nanocrystals for luminescent sensing of Fe{sup 3+} in water. United States: N. p., 2017. Web. doi:10.1016/J.JSSC.2016.10.019.
Dong, Yingying, Zhang, Hanzhuo, Lei, Fan, Liang, Mei, Qian, Xuefeng, Shen, Peilian, Xu, Hui, E-mail: huixu@cjlu.edu.cn, Chen, Zhihui, E-mail: huixu.chen@gmail.com, Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, Gao, Junkuo, E-mail: jkgao@zstu.edu.cn, & Yao, Juming. Benzimidazole-functionalized Zr-UiO-66 nanocrystals for luminescent sensing of Fe{sup 3+} in water. United States. doi:10.1016/J.JSSC.2016.10.019.
Dong, Yingying, Zhang, Hanzhuo, Lei, Fan, Liang, Mei, Qian, Xuefeng, Shen, Peilian, Xu, Hui, E-mail: huixu@cjlu.edu.cn, Chen, Zhihui, E-mail: huixu.chen@gmail.com, Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, Gao, Junkuo, E-mail: jkgao@zstu.edu.cn, and Yao, Juming. Sun . "Benzimidazole-functionalized Zr-UiO-66 nanocrystals for luminescent sensing of Fe{sup 3+} in water". United States. doi:10.1016/J.JSSC.2016.10.019.
@article{osti_22658152,
title = {Benzimidazole-functionalized Zr-UiO-66 nanocrystals for luminescent sensing of Fe{sup 3+} in water},
author = {Dong, Yingying and Zhang, Hanzhuo and Lei, Fan and Liang, Mei and Qian, Xuefeng and Shen, Peilian and Xu, Hui, E-mail: huixu@cjlu.edu.cn and Chen, Zhihui, E-mail: huixu.chen@gmail.com and Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024 and Gao, Junkuo, E-mail: jkgao@zstu.edu.cn and Yao, Juming},
abstractNote = {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 Fe{sup 3+} ions in water.},
doi = {10.1016/J.JSSC.2016.10.019},
journal = {Journal of Solid State Chemistry},
number = ,
volume = 245,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2017},
month = {Sun Jan 15 00:00:00 EST 2017}
}
  • A systematic study has been conducted on a novel luminescent metal-organic framework, ([Zn(bpyp)(L-OH)]·DMF·2H{sub 2}O){sub n} (1), to explore its sensing mechanisms to Fe{sup 3+}. Structure analyses show that compound 1 exist pyridine N atoms and -OH groups on the pore surface for specific sensing of metal ions via Lewis acid-base interactions. On this consideration, the quenching mechanisms are studied and the processes are controlled by multiple mechanisms in which dynamic and static mechanisms are calculated, achieving the quantification evaluation of the quenching process. This work not only achieves the quantitative evaluation of the luminescence quenching but also provides certain insightsmore » into the quenching process, and the possible mechanisms explored in this work may inspire future research and design of target luminescent metal-organic frameworks (LMOFs) with specific functions. - Graphical abstract: A systematic study has been conducted on a novel luminescent metal-organic framework to explore its sensing mechanisms to Fe{sup 3+}. The quenching mechanisms are studied and the processes are controlled by multiple mechanisms in which dynamic and static mechanisms are calculated, achieving the quantification evaluation of the quenching process. - Highlights: • A novel porous luminescent MOF containing uncoordinated groups in interlayer channels was successfully synthesized. • The compound 1 can exhibit significant luminescent sensitivity to Fe{sup 3+}, which make its good candidate as luminescent sensor. • The corresponding dynamic and static quenching constants are calculated, achieving the quantification evaluation of the quenching process.« less
  • The ability to encapsulate photo-active guest molecules within the pores of metal organic frameworks (MOFs) affords the opportunity to develop robust photocatalysts as well as solar energy conversion systems. An important criteria for such systems is stability of the new materials towards moisture, high temperatures, etc which preclude the use of many MOF frameworks. Here, the ability to encapsulate [Ru(II)(2,2′-bipyridine){sub 3}]{sup 2+}([Ru(bpy){sub 3}]{sup 2+}) into the cavities of the zirconium based MOF Uio-66 as well as the photophysical properties of the complex are reported. The X-ray powder diffraction data of the orange Uio-66 powder are consistent with the formation ofmore » Uio-66 in the presence of [Ru(bpy){sub 3}]{sup 2+}. The steady state emission exhibits a significant bathochromic shift from 603 nm in ethanol to 610 nm in Uio-66. The corresponding emission decay of the encapsulated [Ru(bpy){sub 3}]{sup 2+} complex is biexponential with a fast component of 128 ns and a slower component of 1176 ns (20 deg C). The slow component is consistent with encapsulation of [Ru(bpy){sub 3}]{sup 2+} into cavities with restricted volume that prevents the population of a triplet ligand field transition that is anti-bonding with respect to the Ru-N bonds. The origin of the fast component is unclear but may involve interactions of the [Ru(bpy){sub 3}]{sup 2+} encapsulated within large cavities formed through missing ligand defect sites within the Uio-66 materials. Co-encapsulated quenchers contained within these larger cavities gives rise to the reduced lifetimes of the [Ru(bpy){sub 3}]{sup 2+} complexes. - Graphical abstract: One-pot synthesis of Ru(II)tris(2,2-bipyridine)@Uio-66 (left) and the effects of encapsulation on the excited state energy levels and decay pathways of the Ru(II)tris(2,2-bipyridine) complex (right).« less
  • In this study, sonication of Ln(CH 3COO) 3·H 2O, Eu(CH 3COO) 3·H 2O and NaOH dissolved in the ionic liquid-butyl-3-methylimidazolium bis(trifluoromethane)sulfonylamide lead to Ln(OH) 3:Eu (Ln: Gd, La, Y) nanoparticles. Subsequent calcination at 800 °C for 3 h allowed to obtain Ln 2O 3:Eu nanopowders. Gd 2O 3 and Y 2O 3 were obtained in the C-type lanthanide sequioxide structure, whereas La 2O 3 crystallized in the A-type. Structure, morphology, and luminescent properties of the nano-oxides were investigated by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), dispersive X-ray (EDX), and photoluminescence (PL). SEM studies revealed that the synthesized Gdmore » 2O 3:Eu, La 2O 3:Eu, and Y 2O 3:Eu formed nano-spindle, -sheets, and -rods in shape, respectively. The nanoscale materials show very efficient red emission due to the intraconfigurational f–f transitions of Eu 3+. The quantum yields for Ln 2O 3:Eu (5%) were determined to be 4.2% for Ln=Gd, 13.8% for Ln=Y and 5.2% for Ln=La. The asymmetric ratio I 02/I 01 of Eu 3+ varies from 5.3 for Gd 2O 3, to 5.6 for Y 2O 3 to 6.5 for La 2O 3, which increased the color chromaticity.« less