Dendrimer-induced synthesis of subnano materials and their characterization: establishing atom hybrid science

Author:

Kuzume Akiyoshi12,Yamamoto Kimihisa13

Affiliation:

1. ERATO-JST Yamamoto Atom Hybrid Project, Tokyo Institute of Technology , 4259 Nagatsuta, Midoriku, Yokohama 226-8503 , Japan

2. Clean Energy Research Center, University of Yamanashi , 4-4-37 Takeda, Kofu 400-8510 , Japan

3. Laboratory for Chemistry and Life Science, Tokyo Institute of Technology , 4259 Nagatsuta, Midoriku, Yokohama 226-8503 , Japan

Abstract

Abstract The precise molecular design of functional dendritic polymers enables the accumulation of multiple metals within a molecular cage. We have established a synthesizing methodology of metallodendrimers where the number of constituent atoms, the choice of elements, and the composition ratio were precisely controlled through an intramolecular Lewis acid-base interaction at each branch of phenylazomethine dendrons. Due to their inherent capsule effect, chemical reduction of metallodendrimers generates homogeneous subnanoparticles with a particle size of about 1 nm in diameter within the dendrimer cage. Fabricated subnanoparticles show amorphous crystal structures with distorted and fluctuated surface atoms and, with such a unique atomic structure, induce peculiar electronic states, surpassing unique and discrete physical and chemical properties of conventional nanoparticles and bulk metals. In this paper, we review the dendrimer-derived synthesis of atomic hybrid subnanoparticles and its research application established in our laboratory.

Funder

JST ERATO

JSPS Kakenhi

Network Joint Research Center for Materials and Devices

Publisher

Oxford University Press (OUP)

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