4.4 Article

A Terbium-Organic Framework Material for Highly Sensitive Sensing of Fe3+ in Aqueous and Biological Systems: Experimental Studies and Theoretical Analysis

期刊

CHEMISTRYSELECT
卷 1, 期 13, 页码 3555-3561

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201600775

关键词

first principle calculations; metal-organic; framework; sensing properties; terbium(III)

资金

  1. NSFC [21201109, 21373122, 21301106, 2167030737, 2167010439]
  2. PHPEO [Q20131304, Q20141201]
  3. ARC Discover Project [DP130100268]
  4. Future Fellowship [FT130100076]
  5. Australian National Computational Infrastructure

向作者/读者索取更多资源

Owing to the paramount importance of iron in biological and environmental systems, advanced agents towards the detection of iron ions with high sensitivity and selectivity have been targeted for decades. Here a new super water-stable agent, namely terbium metal-organic framework (Tb-MOF), [H-2 N(CH3)(2)][Tb(cppa)(2)(H-2-O)(2)],(CTGU-1, CTGU= China Three Gorges University, H(2)cppa= 5-(4-carboxyphenyl) picolinic acid), has been successfully synthesized and demonstrated as a fluorescent turn-off sensor for highly sensitive detection of Fe3+ with the detection limit of 10(-9) M in dimethylformamide (DMF), 10(-7) M in water and 10(-7) M in biological environment, respectively. Such detecting capacity, to our knowledge, is the best compared to those of reported lanthanide-baed MOF fluorescent probes so far. With the combination of first principle calculations, the detecting capacity has been analysed from the interaction between metal ions and organic ligands, particularly the effect of metal ions on the frontier molecular orbitals. This work offers a new Ln-MOF probe towards the detection of metal irons with high sensitivity and selectivity.

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