Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 247, Issue -, Pages 66-74Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2017.03.054
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Funding
- Beijing Natural Science Foundation [2142011]
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A facile and sustainable approach for preparation of multiple-shelled hollow periodic-mesoporous organosilicas (PMOs) nanospheres with adjustable shells thickness has been established by a dual template method without any other extra additions. Triblock copolymer Pluronic P123 and cationic and anionic mixed surfactant (CTAB/SDS) were employed as dual templates and 1,4-Bis(triethoxysilyl) benzene (BTEB) was used as the organicsilica precursor. In the synthesis, single and multiple-shelled hollow nanospheres were synthesized with different CO2 pressures. Moreover, the shell thickness of hollow PMOs nanospheres could be tuned simply by adjusting the CO2 pressure. TENT, SAXS, N-2 adsorption-desorption, solid-state NMR, and FTIR were employed to character the structure and component of the prepared PMOs. For their unique multiple-shelled structure, the obtained PMOs nanospheres were used as the drug carrier to demonstrate the high uploading and controlled release of an anti-cancer drug doxorubicin. The versatility of this method was demonstrated with the preparation of hollow PMO nanospheres from other surfactants. (C) 2017 Elsevier Inc. All rights reserved.
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