Direct evidence of ZnO morphology modification via the selective adsorption of ZnO-binding peptides

Mei-Keat Liang, Olivier Deschaume, Siddharth V. Patwardhan, Carole C. Perry

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Biomolecule-mediated ZnO synthesis has great potential for the tailoring of ZnO morphology for specific application in biosensors, window materials for display and solar cells, dye-sensitized solar cells (DSSCs), biomedical materials, and photocatalysts due to its specificity and multi-functionality. In this contribution, the effect of a ZnO-binding peptide (ZnO-BP, G-12: GLHVMHKVAPPR) and its GGGC-tagged derivative (GT-16: GLHVMHKVAPPRGGGC) on the growth of ZnO crystals expressing morphologies dependent on the relative growth rates of (0001) and (10 (1) over bar0) planes of ZnO have been studied. The amount of peptide adsorbed was determined by a depletion method using oriented ZnO films grown by Atomic Layer Deposition (ALD), while the adsorption behavior of G-12 and GT-16 was investigated using XPS and a computational approach. Direct evidence was obtained to show that (i) both the ZnO-BP identified by phage display and its GGGC derivative (GT-16) are able to bind to ZnO and modify crystal growth in a molecule and concentration dependent fashion, (ii) plane selectivity for interaction with the (0001) versus the (10 (1) over bar0) crystal planes is greater for GT-16 than G-12; and (iii) specific peptide residues interact with the crystal surface albeit in the presence of charge compensating anions. To our knowledge, this is the first study to provide unambiguous and direct quantitative experimental evidence of the modification of ZnO morphology via (selective and nonselective) adsorption-growth inhibition mechanisms mediated by a ZnO-BP identified from phage display libraries.

LanguageEnglish
Pages80-89
Number of pages10
JournalJournal of Materials Chemistry
Volume21
Issue number1
Early online date22 Oct 2010
DOIs
Publication statusPublished - 2011

Fingerprint

Peptides
Bacteriophages
Display devices
Adsorption
Crystals
Derivatives
Atomic layer deposition
Biomolecules
Photocatalysts
Crystallization
Crystal growth
Biosensors
Anions
Solar cells
Negative ions
X ray photoelectron spectroscopy
Molecules
Dye-sensitized solar cells
alpha'-bis(3-(N,N-diethylcarbamoyl)piperidino)-4-xylene alpha

Keywords

  • zinc-oxide nanoparticles
  • low-temperature growth
  • graft peo-copolymers
  • aqueous solution
  • amino acids
  • hydrothermal synthesis
  • inorganic materials
  • chemical bath

Cite this

Liang, Mei-Keat ; Deschaume, Olivier ; Patwardhan, Siddharth V. ; Perry, Carole C. / Direct evidence of ZnO morphology modification via the selective adsorption of ZnO-binding peptides. In: Journal of Materials Chemistry. 2011 ; Vol. 21, No. 1. pp. 80-89.
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Direct evidence of ZnO morphology modification via the selective adsorption of ZnO-binding peptides. / Liang, Mei-Keat; Deschaume, Olivier; Patwardhan, Siddharth V.; Perry, Carole C.

In: Journal of Materials Chemistry, Vol. 21, No. 1, 2011, p. 80-89.

Research output: Contribution to journalArticle

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T1 - Direct evidence of ZnO morphology modification via the selective adsorption of ZnO-binding peptides

AU - Liang, Mei-Keat

AU - Deschaume, Olivier

AU - Patwardhan, Siddharth V.

AU - Perry, Carole C.

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N2 - Biomolecule-mediated ZnO synthesis has great potential for the tailoring of ZnO morphology for specific application in biosensors, window materials for display and solar cells, dye-sensitized solar cells (DSSCs), biomedical materials, and photocatalysts due to its specificity and multi-functionality. In this contribution, the effect of a ZnO-binding peptide (ZnO-BP, G-12: GLHVMHKVAPPR) and its GGGC-tagged derivative (GT-16: GLHVMHKVAPPRGGGC) on the growth of ZnO crystals expressing morphologies dependent on the relative growth rates of (0001) and (10 (1) over bar0) planes of ZnO have been studied. The amount of peptide adsorbed was determined by a depletion method using oriented ZnO films grown by Atomic Layer Deposition (ALD), while the adsorption behavior of G-12 and GT-16 was investigated using XPS and a computational approach. Direct evidence was obtained to show that (i) both the ZnO-BP identified by phage display and its GGGC derivative (GT-16) are able to bind to ZnO and modify crystal growth in a molecule and concentration dependent fashion, (ii) plane selectivity for interaction with the (0001) versus the (10 (1) over bar0) crystal planes is greater for GT-16 than G-12; and (iii) specific peptide residues interact with the crystal surface albeit in the presence of charge compensating anions. To our knowledge, this is the first study to provide unambiguous and direct quantitative experimental evidence of the modification of ZnO morphology via (selective and nonselective) adsorption-growth inhibition mechanisms mediated by a ZnO-BP identified from phage display libraries.

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KW - zinc-oxide nanoparticles

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KW - graft peo-copolymers

KW - aqueous solution

KW - amino acids

KW - hydrothermal synthesis

KW - inorganic materials

KW - chemical bath

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M3 - Article

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SP - 80

EP - 89

JO - Journal of Materials Chemistry

T2 - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

SN - 0959-9428

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