Lamellar Peptide-Cadmium-Doped Zinc Oxide Nanohybrids That Emit White Light

Manoj K. Manna, Aaryashree, Shruti Verma, Shaibal Mukherjee, Apurba K. Das

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

A variety of hybrid nanostructures have been developed that emit white light. Two different white-light-emitting systems are reported. These are cadmium-doped zinc oxide nanosheets and complex lamellar nanostructures that consist of alternating inorganic cadmium-doped zinc oxide domains with the self-assembled aromatic-capped peptide BPI-FF-OH (BPI: Benzo[ghi]perylene monoimide, F: D-phenylalanine). An electrochemical method is employed to synthesize cadmium-doped zinc oxide nanosheets and lamellar organic/cadmium-doped zinc oxide nanoflakes on a gallium-doped ZnO/p-Si (111) substrate. External structural features and internal structural ordering of wurtzite cadmium-doped zinc oxide and lamellar organic/cadmium-doped zinc oxide nanohybrids are characterized by small-angle X-ray scattering, XRD, field-emission SEM, energy-dispersive X-ray spectroscopy, secondary-ion mass spectrometry, ellipsometry, and photoluminescence spectroscopy. Cadmium-doped zinc oxide nanosheets and lamellar organic/cadmium-doped zinc oxide hybrids emit white light with a broad emission covering the visible spectrum from λ=415 to 700 nm. Characteristic white-light emissions of both materials were well characterized by photoluminescence studies. The white-light luminescence is attributed to cadmium doping in the zinc oxide crystal and the presence of the dipeptide-functionalized BPI fluorophore in the lamellar nanohybrid.

Original languageEnglish
Pages (from-to)329-337
Number of pages9
JournalChemPlusChem
Volume81
Issue number3
DOIs
Publication statusPublished - 2016 Mar 1
Externally publishedYes

Keywords

  • cadmium
  • doping
  • electrochemistry
  • nanostructures
  • peptides

ASJC Scopus subject areas

  • Chemistry(all)

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