Dendrimer-encapsulated Pt nanoparticles in supercritical medium: synthesis, characterization, and application to device fabrication.
In this work we describe a general method for formation of Pt nanoparticles within an ultrathin film matrix and its application for non-volatile memory (NVM). Our approach involves the formation of Pt nanoparticles within ultrathin film matrix formed by covalent layer-by-layer (LbL) assembly of pyromellitic dianhydride (PMDA) and second generation of polyamidoamine (PAMAM) dendrimer in supercritical carbon dioxide (SCCO(2)). The hyperbranched component in the film structure serves to confine nanoparticle size and improve distribution. The memory effect and retention capability is demonstrated by means of a metal-insulator semiconductor (MIS) device fabricated using the nanoparticle-laden thin film as the insulating layer.
Puniredd
Sreenivasa Reddy
SR
Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117576. spunreddy@gmail.com
Yin
Chan Mei
CM
Hooi
Yeong Sai
YS
Lee
P S
PS
Srinivasan
M P
MP