Single nickel-related defects in molecular-sized nanodiamonds for multicolor bioimaging

An ab initio study

Gerg Thiering, Elisa Londero, A. Gali

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Fluorescent nanodiamonds constitute an outstanding alternative to semiconductor quantum dots and dye molecules for in vivo biomarker applications, where the fluorescence comes from optically active point defects acting as color centers in the nanodiamonds. For practical purposes, these color centers should be photostable as a function of the laser power or the surface termination of nanodiamonds. Furthermore, they should exhibit a sharp and nearly temperature-independent zero-phonon line. In this study, we show by hybrid density functional theory calculations that nickel doped nanodiamonds exhibit the desired properties, thus opening the avenue to practical applications. In particular, harnessing the strong quantum confinement effect in molecule-sized nanodiamonds is very promising for achieving multicolor imaging by single nickel-related defects.

Original languageEnglish
Pages (from-to)12018-12025
Number of pages8
JournalNanoscale
Volume6
Issue number20
DOIs
Publication statusPublished - Oct 21 2014

Fingerprint

Nanodiamonds
Nickel
Defects
Color centers
Color
Phonons
Quantum Dots
Semiconductors
Molecules
Quantum confinement
Biomarkers
Point defects
Semiconductor quantum dots
Density functional theory
Lasers
Coloring Agents
Dyes
Fluorescence
Imaging techniques
Temperature

ASJC Scopus subject areas

  • Materials Science(all)
  • Medicine(all)

Cite this

Single nickel-related defects in molecular-sized nanodiamonds for multicolor bioimaging : An ab initio study. / Thiering, Gerg; Londero, Elisa; Gali, A.

In: Nanoscale, Vol. 6, No. 20, 21.10.2014, p. 12018-12025.

Research output: Contribution to journalArticle

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