Synthesis of large-pore urea-bridged periodic mesoporous organosilicas.
In this article we report the successful synthesis of a new class of periodic mesoporous organosilicas (PMOs) with a urea-bridged organosilica precursor under acid-catalyzed and inorganic-salt-assisted conditions. The large-pore hybrid materials have an ordered mesostructure with uniform pore size distributions, excellent thick framework walls, thermal stability, and specific functional groups. The composition of the mesoporous organosilicas was characterized by FTIR spectroscopy, (13)C cross-polarization magic-angle spinning (CP MAS) NMR spectroscopy, and (29)Si MAS NMR spectroscopy.
Gao
Ling
L
Key Laboratory of Mesoscopic Chemistry of MOE, College of Chemistry and Chemistry Engineering, Nanjing University, Nanjing 210093, China.
Wei
Feng
F
Zhou
Yu
Y
Fan
Xiao Xing
XX
Wang
Ying
Y
Zhu
Jian Hua
JH