Journal
CHEMISTRYSELECT
Volume 2, Issue 10, Pages 3200-3206Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201700416
Keywords
metal-organic framework; selective benzene adsorption; sensing nitroaromatics
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Funding
- SERB, Government of India [PDF/2015/000368]
- DST
- UGC
- IISER Bhopal
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A porous two-dimensional Cu(I) Metal-Organic Framework (MOF) with 4(4) net {[Cu(L)(I)]center dot(DMF)center dot H2O}(n) (1); L=4'-(anthracen- 9-yl)-4,2':6',4 ''-terpyridine; DMF=N,N-dimethylformamide) was synthesized employing solvothermal technique. Single crystal X-ray analysis reveals that the 2D 4(4) nets in 1 are interdigitated with each other to generate a supramolecular 3D framework, contains 1D pore with pi- electron-rich pore surfaces decorated with pendant anthracene moiety of linker L. The adsorption properties of activated framework 1 were investigated and it exhibited preferential affinity for benzene and can successfully separate benzene from its nonaromatic analogue like cyclohexane under ambient conditions. Furthermore, the luminescent study indicated that compound 1 can sensitively and selectively detect highly explosive nitroaromatic compound (TNP; 2,4,6-trinitrophenol), even in presence of other nitroanalytes via fluorescence quenching mechanism. More importantly, recyclability and sensitivity studies have revealed its reusability for several times and detection limit towards TNP is at the parts per billion (ppb) levels. This is a promising material of dual functionalities such as separation of benzene from cyclohexane and selective nitroarometic sensing.
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