CAS: 123640-93-7; 4,4'-Bis(Triethoxysilyl)-1,1'-Biphenyl

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参考标题:Synthesis Of New Microporous Layered Organic-Inorganic Hybrid Nanocomposites By Alkoxysilylation Of A Crystalline Layered Silicate, Ilerite
作者:Ryo Ishii,Takuji Ikeda,Tetsuji Itoh,Takeo Ebina,Toshirou Yokoyama,Takaaki Hanaoka,Fujio Mizukami
摘要:We Have Developed Microporous Organic–inorganic Hybrid Nanocomposites By Alkoxysilylation Of 4,4A€²-Biphenyl-Bridged Alkoxysilane Compounds, Which Contain Triethoxysilyl, Methyldiethoxysilyl, And Dimethylethoxysilyl Groups At Each End Of The 4,4A€²-Biphenylene Unit ((Ch3)N(C2H5O)3Aˆ’n-Si-C12H8-Si-(Oc2H5)3Aˆ’n(Ch3)N, N = 0, 1, Or 2, Abbreviated As Besb(0), Besb(2), Or Besb(4), Respectively, Where The Number In Parentheses Indicates The Number Of Methyl Groups In These Molecules), In The Interlayer Of A Crystalline Layered Silicate, Ilerite. Xrd, 29Si Solid-State Nmr And Fluorescence Spectroscopy Revealed The Immobilization And Bridging Formation Of The Besb Molecules Between The Silicate Layers By Condensation, Not Only With H-Ilerite, But Also With The Besb Molecules. The Interlayer Structures Exhibited Different Molecular Arrangements. Besb(0) And Besb(4) Molecules Are Present As A Monolayer Arrangement In Which Besb(0) Molecules Form The Oligomeric Species Caused By Close Stacking Like A Dimer. Besb(2) Molecules Form Mainly Bilayer-Like Aggregates In The Interlayer. The Structural Differences Are Caused By The Different Reactivities Of The Besb Molecules, Which Control Their Polymerization In The Interlayer. The Resultant Besb(0)- And Besb(2)-Ilerite Had High Microporosity With Bet Surface Areas (508 And 578 M2 G−1 For Besb(0)- And Besb(2)-Ilerite, Respectively). The Micropores Showed Higher Toluene Adsorptivity Than Several Other Porous Silica Materials Due To The Successful Surface Modification. Consequently, This Approach Provides A New Method For Constructing Novel Microporous Nanocomposites, The Key To Improved Selectivity And Activity In Separation And Catalytic Applications.

合成参考文献

摘要:Compound: 4,4′-Bis(triethoxysilyl)biphenyl homopolymer