Volume 50 Number 2 (2019.6)
Special Feature
Recent Research Developments on Periodic Mesoporous Organosilicas
Part I. Special Feature
Overview
Research Reports
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pages 1-7
Norihiro Mizoshita
Recent developments in the controlled arrangement of organic functional groups of periodic mesostructured and mesoporous organosilica materials are highlighted. Promotion of excimer formation within the framework is a new approach to preparing highly fluorescent mesostructured films. Hydrogen-bonded periodic mesoporous organosilicas are a useful platform for photoinduced electron transfer systems.
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3. Catalysis of Metal Complexes Immobilized on Periodic Mesoporous Organosilicas
(4445kB)pages 9-20
Yoshifumi Maegawa
A crystal-like bipyridine-bridged periodic mesoporous organosilica (BPy-PMO) was newly synthesized. We proposed a novel immobilization approach using BPy-PMO as a solid chelating support to develop heterogeneous metal complex catalysts having well-defined metal coordination structures. The heterogeneous metal complex catalysts showed high catalytic activity and reusability for various organic transformations.
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pages 21-31
Ken-ichi Yamanaka
The excited-state dynamics of phenylene (Ph) and biphenylylene (Bp) moieties in the framework of PMO were studied by time-resolved fluorescence and absorption spectroscopies. The differences between Ph-PMO and Bp-PMO were discussed.
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pages 33-44
Soichi Shirai
Intermolecular interactions of bridging organic groups are important in the functionalities of periodic mesoporous silica (PMO) materials. Theoretical calculations are effectively combined with experimental analyses to clarify the details of these interactions. Here, studies on the excimer fluorescence emission and electron transfers between the metal complexes in PMOs are reviewed.
Part II.
Special Review
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pages 45-61
Masaya Kawasumi
Polymer-clay nanocomposites created by TOYOTA CRDL, INC. ahead of the world exhibit superior properties and unique functions by the dispersion of small amounts of nanosized fillers. In this review, we look back on the history of nanocomposites, summarize their characteristic properties and functions, and look into their future.