Mineralization of semiconductor nanocrystals on peptide-coated bionanotubes and their pH-dependent morphology changes.

Mineralization of semiconductor nanocrystals on peptide-coated bionanotubes and their pH-dependent morphology changes. Research Abstract Details 

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Mineralization of semiconductor nanocrystals on peptide-coated bionanotubes and their pH-dependent morphology changes. Abstract Text:

Ipsita A Banerjee,Germaine Muniz,Sang-Yup Lee,Hiroshi Matsui,

While various mineralizing peptides have been applied to grow metal nanoparticles on bionanotube templates, the semiconductor nanoparticle growth on nanotubes has not extensively been explored yet. In this paper, various semiconductor nanocrystals were grown on the bionanotubes surfaces with controlled sizes. When three synthetic peptides, which recognize and selectively bind Ge, Ti, and Cu ions, respectively, were incorporated on template bionanotube surfaces, highly crystalline and monodisperse Ge, TiO2, and Cu2S nanocrystals were grown on the tube surfaces. The sizes of these nanocrystals could be tuned as a function of pH, and larger semiconductor nanocrystals were grown as the pH of growth solutions was increased. All of these nanocrystals from smaller sizes to larger sizes had the same crystallinity. This peptide-controlled nanocrystal growth technique will be very useful to prepare semiconductor nanowires as building blocks for future microelectronics, whose band gaps can be tuned by the sizes of coated semiconductor nanoparticles via their quantum confinement effect. The novelty of this approach in the electronic device fabrication is that the semiconductor nanocrystal size control can be achieved by controlling peptide configurations via pH change, and this control may tune electronic structures and band gaps of the resulting semiconductor nanowires.

Mineralization of semiconductor nanocrystals on peptide-coated bionanotubes and their pH-dependent morphology changes. Publishing Authors By Initials

IA Banerjee,G Muniz,SY Lee,H Matsui,

For similar natural sciences: chemistry: chemistry, physical: surface properties research abstracts see: natural sciences: chemistry: chemistry, physical: surface properties research

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Mineralization of semiconductor nanocrystals on peptide-coated bionanotubes and their pH-dependent morphology changes. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Journal of nanoscience and nanotechnology

VOLUME: 7

Page Numbers: 2287-92

Journal Abbreviation:

ISSN: 1533-4880

DAY: 3

MONTH: Jul

YEAR: 2007

Mineralization of semiconductor nanocrystals on peptide-coated bionanotubes and their pH-dependent morphology changes. Information

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LANGUAGE: eng

NlmUniqueID: 101088195

Mineralization of semiconductor nanocrystals on peptide-coated bionanotubes and their pH-dependent morphology changes. Keywords Mesh Terms:

KEYWORDS: Surface Properties

MESH TERMS: chemistry

Chemical & Substance for Abstract: Mineralization of semiconductor nanocrystals on peptide-coated bionanotubes and their pH-dependent morphology changes. Information

Substance Name: Peptides

Registry Number: 0

Grant and Affiliation Information for Mineralization of semiconductor nanocrystals on peptide-coated bionanotubes and their pH-dependent morphology changes.

AFFILIATION: Department of Chemistry and Biochemistry at Hunter College, The City University of New York, New York, NY 10021, USA.

Country: United States

AGENCY: United States NCRR

GRANT: G12-RR-03037

ACRONYM: RR

MEDLINETA: J Nanosci Nanotechnol

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