PMID- 17243685
OWN - NLM
STAT- MEDLINE
DCOM- 20070403
LR  - 20181201
IS  - 0002-7863 (Print)
IS  - 0002-7863 (Linking)
VI  - 129
IP  - 6
DP  - 2007 Feb 14
TI  - Ordered mesoporous silicas and carbons with large accessible pores templated from 
      amphiphilic diblock copolymer poly(ethylene oxide)-b-polystyrene.
PG  - 1690-7
AB  - Highly ordered mesoporous carbons and silicas with ultralarge accessible pores 
      have been successfully synthesized by using laboratory-made poly(ethylene 
      oxide)-b-polystyrene (PEO-b-PS) diblock copolymers as templates via the 
      evaporation-induced self-assembly (EISA) approach. Resols and tetraethyl 
      orthosilicate (TEOS) serve as carbon and silica precursors, respectively. 
      Small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM) 
      measurements show that the mesoporous carbons (denoted as C-FDU-18) possess face 
      centered cubic closed-packing (fcc) mesostructure (Fm3m) with large-domain 
      ordering. N2 sorption isotherms reveal a large mesopore at the mean value of 22.6 
      nm with a narrow pore-size distribution. Mesoporous silicas (Si-FDU-18) also 
      display a highly ordered fcc closed-packing mesostructure with an ultralarge unit 
      cell (a = 54.6 nm). A hydrothermal recrystallization was introduced for the first 
      time to produce micropores in thick silica walls (approximately 7.7 nm) and thus 
      to generate ultralarge accessible mesopores (30.8 nm). Notably, the amphiphilic 
      diblock copolymer with high molecular weight (PEO125-PS230, 29700 g mol-1) in 
      this report was prepared via a simple method of atom transfer radical 
      polymerization (ATRP). It can be easily available for chemists even without any 
      experience in polymer synthesis.
FAU - Deng, Yonghui
AU  - Deng Y
AD  - Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and 
      Innovative Materials, Fudan University, Shanghai 200433, People's Republic of 
      China.
FAU - Yu, Ting
AU  - Yu T
FAU - Wan, Ying
AU  - Wan Y
FAU - Shi, Yifeng
AU  - Shi Y
FAU - Meng, Yan
AU  - Meng Y
FAU - Gu, Dong
AU  - Gu D
FAU - Zhang, Lijuan
AU  - Zhang L
FAU - Huang, Yan
AU  - Huang Y
FAU - Liu, Chong
AU  - Liu C
FAU - Wu, Xiaojing
AU  - Wu X
FAU - Zhao, Dongyuan
AU  - Zhao D
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20070123
PL  - United States
TA  - J Am Chem Soc
JT  - Journal of the American Chemical Society
JID - 7503056
RN  - 0 (Polystyrenes)
RN  - 3WJQ0SDW1A (Polyethylene Glycols)
RN  - 7631-86-9 (Silicon Dioxide)
SB  - IM
MH  - Magnetic Resonance Spectroscopy
MH  - Microscopy, Electron, Transmission
MH  - Polyethylene Glycols/chemical synthesis/*chemistry
MH  - Polystyrenes/chemical synthesis/*chemistry
MH  - Scattering, Small Angle
MH  - Silicon Dioxide/*chemistry
EDAT- 2007/01/25 09:00
MHDA- 2007/04/04 09:00
CRDT- 2007/01/25 09:00
PHST- 2007/01/25 09:00 [pubmed]
PHST- 2007/04/04 09:00 [medline]
PHST- 2007/01/25 09:00 [entrez]
AID - 10.1021/ja067379v [doi]
PST - ppublish
SO  - J Am Chem Soc. 2007 Feb 14;129(6):1690-7. doi: 10.1021/ja067379v. Epub 2007 Jan 
      23.