Bifunctional Porphyrin-Based Nano-Metal-Organic Frameworks: Catalytic and Chemosensing Studies
authors Pereira, CF; Figueira, F; Mendes, RF; Rocha, J; Hupp, JT; Farha, OK; Simoes, MMQ; Tome, JPC; Paz, FAA
nationality International
journal INORGANIC CHEMISTRY
keywords ORGANOSULFUR COMPOUNDS; COORDINATION POLYMER; BIOMIMETIC CATALYSIS; OXIDATION; DESULFURIZATION; CHEMISTRY; ENZYMES; LINKER; FUELS
abstract The use of 5,10,15,20-tetrakis(p-phenylphosphonic acid)porphyrin (H(10)TPPA) as a linker in the preparation of porphyrin-based metal-organic frameworks (Por-MOFs) through coordination to lanthanides cations is reported. The resulting unprecedented materials, formulated as [M(H(9)TPPA)(H2O)(x)]Cl-2 center dot yH(2)O [x + y = 7; M3+ = La3+ (1), Yb3+ (2), and Y3+ (3)], prepared using hydrothermal synthesis, were extensively characterized in the solid-state, for both their structure and thermal robustness, using a myriad of solid-state advanced techniques. Materials were evaluated as heterogeneous catalysts in the oxidation of thioanisole by H2O2 and as chemosensors for detection of nitroaromatic compounds (NACs). Nano-Por-MOFs 1-3 proved to be effective as heterogeneous catalysts in the sulfoxidation of thioanisole, with Por-MOF 1 exhibiting the best catalytic performance with a conversion of thioanisole of 89% in the first cycle and with a high selectivity for the sulfoxide derivative (90%). The catalyst maintained its activity roughly constant in three consecutive runs. Por-MOFs 1-3 can be employed as chemosensors because of a measured fluorescence quenching up to 70% for nitrobenzene, 1,4-dinitrobenzene, 4-nitrophenol, and phenol, with 2,4,6-trinitrophenol exhibiting a peculiar fluorescence profile.
publisher AMER CHEMICAL SOC
issn 0020-1669
year published 2018
volume 57
issue 7
beginning page 3855
ending page 3864
digital object identifier (doi) 10.1021/acs.inorgchem.7b03214
web of science category Chemistry, Inorganic & Nuclear
subject category Chemistry
unique article identifier WOS:000429283200042
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journal impact factor 4.700
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