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Amphiphilic Organic–Inorganic Hybrid Zeotype Aluminosilicate like a Nanoporous Crystallized Langmuir–Blodgett Film
Author(s) -
Ikeda Takuji,
Hiyoshi Norihito,
Matsuura Shunichi,
Kodaira Tetsuya,
Nakaoka Takuma,
Irisa Ami,
Kawano Miki,
Yamamoto Katsutoshi
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201503661
Subject(s) - aluminosilicate , microporous material , nanoporous , nanopore , materials science , chemical engineering , zeolite , adsorption , monolayer , amphiphile , crystallization , tetramethylammonium , sodalite , langmuir–blodgett film , nanotechnology , chemistry , organic chemistry , copolymer , polymer , engineering , composite material , catalysis , ion
A new organic–inorganic hybrid zeotype compound with amphiphilic one‐dimensional nanopore and aluminosilicate composition was developed. The framework structure is composed of double aluminosilicate layers and 12‐ring nanopores; a hydrophilic layer pillared by Q 2 silicon atom species and a lipophilic layer pillared by phenylene groups are alternately stacked, and 12‐ring nanopores perpendicularly penetrate the layers. The framework topology looks similar to that of an AFI‐type zeolite but possesses a quasi‐multidimensional pore structure consisting of a 12‐ring channel and intersecting small pores equivalent to 8‐rings. The hybrid material with alternately laminated lipophilic and hydrophilic nanospaces can be assumed as a crystallized Langmuir–Blodgett film. It demonstrates microporous adsorption for both hydrophilic and lipophilic adsorptives, and its outer surface tightly adsorbs lysozyme whose molecular size is much larger than its micropore opening. Our results suggest the possibility of designing porous adsorbent with high amphipathicity.