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Clickable Periodic Mesoporous Organosilicas: Synthesis, Click Reactions, and Adsorption of Antibiotics
Author(s) -
Gao Jinsuo,
Zhang Xueying,
Xu Shutao,
Tan Feng,
Li Xinyong,
Zhang Yaobin,
Qu Zhenping,
Quan Xie,
Liu Jian
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201303778
Subject(s) - pmos logic , mesoporous organosilica , adsorption , click chemistry , hydrogenolysis , ciprofloxacin hydrochloride , mesoporous material , materials science , copolymer , combinatorial chemistry , mesoporous silica , chemistry , nanotechnology , catalysis , organic chemistry , antibiotics , ciprofloxacin , polymer , transistor , biochemistry , physics , quantum mechanics , voltage
Pharmaceutical antibiotics are not easily removed from water by conventional water‐treatment technologies and have been recognized as new emerging pollutants. Herein, we report the synthesis of clickable azido periodic mesoporous organosilicas (PMOs) and their use as adsorbents for the adsorption of antibiotics. Ethane‐bridged PMOs, functionalized with azido groups at different densities, were synthesized by the co‐condensation of 1,2‐bis(trimethoxysilyl)ethane (BTME) and 3‐azidopropyltrimethoxysilane (AzPTMS), in the presence of nonionic‐surfactant triblock‐copolymer P123, in an acidic medium. Four different alkynes were conjugated to azide‐terminated PMOs by means of an efficient click reaction. The clicked PMOs showed improved adsorption capacity (241 μg g −1 ) for antibiotics (ciprofloxacin hydrochloride) compared with azido‐functionalized PMOs because of the enhanced π–π stacking interactions. These results indicate that click reactions can introduce multifunctional groups onto PMOs, thus demonstrating the great potential of PMOs for environmental applications.