TY - JOUR
T1 - Direct Estimation of the Surface Location of Immobilized Functional Groups for Concerted Catalysis Using a Probe Molecule
AU - Noda, Hiroto
AU - Motokura, Ken
AU - Wakabayashi, Yusuke
AU - Sasaki, Kaori
AU - Tajiri, Hiroo
AU - Miyaji, Akimitsu
AU - Yamaguchi, Sho
AU - Baba, Toshihide
N1 - Funding Information:
Acknowledgements: The synchrotron radiation experiment at SPring-8 was performed with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No. 2015A1198). This study was supported by JSPS KAKENHI (grant Nos. 24686092, 25630362, 26287080, and 15H04182) and JSPS Grant-in-Aid for Scientific Research on Innovative Areas "3D Active-Site Science" (grant No. 26105003, 26105008). H.N. thanks Grant-in-Aid for JSPS Fellowship (grant No. 2612038).
Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2016/4/4
Y1 - 2016/4/4
N2 - The location of active sites during concerted catalysis by a metal complex and tertiary amine on a SiO2 surface is discussed based on the interaction between the functionalized SiO2 surface and a probe molecule, p-formyl phenylboronic acid. The interactions of the probe molecule with the surface functionalities, diamine ligand, and tertiary amine, were analyzed by FT-IR and solid-state 13C and 11B MAS NMR. For the catalyst exhibiting high 1,4-addition activity, the diamine ligand and tertiary amine base exist in closer proximity than in the catalyst with low activity.
AB - The location of active sites during concerted catalysis by a metal complex and tertiary amine on a SiO2 surface is discussed based on the interaction between the functionalized SiO2 surface and a probe molecule, p-formyl phenylboronic acid. The interactions of the probe molecule with the surface functionalities, diamine ligand, and tertiary amine, were analyzed by FT-IR and solid-state 13C and 11B MAS NMR. For the catalyst exhibiting high 1,4-addition activity, the diamine ligand and tertiary amine base exist in closer proximity than in the catalyst with low activity.
KW - active site distance
KW - amine
KW - heterogeneous concerted catalysis
KW - probe molecule
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U2 - 10.1002/chem.201600263
DO - 10.1002/chem.201600263
M3 - Article
AN - SCOPUS:84977853393
VL - 22
SP - 5113
EP - 5117
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 15
ER -