TY - JOUR
T1 - Synthesis, bifunctionalization, and application of isocyanurate-based periodic mesoporous organosilicas
AU - Zhang, Wen Hua
AU - Zhang, Xiaoning
AU - Hua, Zile
AU - Harish, Parala
AU - Schroeder, Felicitas
AU - Hermes, Stephan
AU - Cadenbach, Thomas
AU - Shi, Jianlin
AU - Fischer, Roland A.
PY - 2007/5/15
Y1 - 2007/5/15
N2 - Isocyanurate-containing silsesquioxane-bridged periodic mesoporous organosilicas (ICS-PMOs) were synthesized by self-assembly of the nonionic surfactant P123, EO20PO70EO20, and trimethoxysilyl-functionalized isocyanurate (ICS-Si) under acidic conditions in the presence of inorganic additives. The ICS-PMOs have been modified by an alkyl-bridged organosilane (i.e., Et-Si; Et = -CH2CH2-) by substituting ICS-Si with Et-Si in the precursors, at various molar ratios, resulting in bifunctionalized PMOs exhibiting two types of bridged groups (ICS-Et-PMOs). The obtained bifunctionalized ICS-Et-PMOs have been characterized by X-ray diffraction, transmission electron microscopy, nitrogen physical sorption, and solid-state 29Si and 13C magic angle spinning NMR spectroscopy. Experiments show that the ICS-Et-PMOs exhibit hexagonal mesoscopic structures. Increasing the content of the Et-Si functionality in the precursors is found to significantly improve the mesostructural ordering of the product. It is suggested that fluoride anions as additives play an important role in the formation of wellordered ICS-PMOs and as well the bifunctionalized ICS-Et-PMOs in the presented experiments. The ICS-PMO materials were used to chemically adsorb H2PtCl6, and Pt nanoparticles were subsequently prepared within the mesopores of ICS-PMO by NaBH4 reduction in solution, highlighting the simplicity in exploiting the application of such PMOs in nanomaterials fabrication.
AB - Isocyanurate-containing silsesquioxane-bridged periodic mesoporous organosilicas (ICS-PMOs) were synthesized by self-assembly of the nonionic surfactant P123, EO20PO70EO20, and trimethoxysilyl-functionalized isocyanurate (ICS-Si) under acidic conditions in the presence of inorganic additives. The ICS-PMOs have been modified by an alkyl-bridged organosilane (i.e., Et-Si; Et = -CH2CH2-) by substituting ICS-Si with Et-Si in the precursors, at various molar ratios, resulting in bifunctionalized PMOs exhibiting two types of bridged groups (ICS-Et-PMOs). The obtained bifunctionalized ICS-Et-PMOs have been characterized by X-ray diffraction, transmission electron microscopy, nitrogen physical sorption, and solid-state 29Si and 13C magic angle spinning NMR spectroscopy. Experiments show that the ICS-Et-PMOs exhibit hexagonal mesoscopic structures. Increasing the content of the Et-Si functionality in the precursors is found to significantly improve the mesostructural ordering of the product. It is suggested that fluoride anions as additives play an important role in the formation of wellordered ICS-PMOs and as well the bifunctionalized ICS-Et-PMOs in the presented experiments. The ICS-PMO materials were used to chemically adsorb H2PtCl6, and Pt nanoparticles were subsequently prepared within the mesopores of ICS-PMO by NaBH4 reduction in solution, highlighting the simplicity in exploiting the application of such PMOs in nanomaterials fabrication.
UR - https://www.scopus.com/pages/publications/34249672902
U2 - 10.1021/cm061922p
DO - 10.1021/cm061922p
M3 - 文章
AN - SCOPUS:34249672902
SN - 0897-4756
VL - 19
SP - 2663
EP - 2670
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 10
ER -