Fluorescent polyelectrolyte capped silver nanoclusters: Optimization and spectroscopic evaluation

Sangram Limbaji Raut, Ryan Rich, Irina Akopova, Erling Thyrhaug, Tanya Shtoyko, Dimytro Shumilov, Zygmunt Gryczynski, Ignacy Gryczynski

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In the present Letter, we have synthesized water soluble Ag nanoclusters using PMAA as a template with different Ag +:COO - ratios, to optimize it for highest brightness using less UV exposure time. Fluorescence polarization was 0.30 and was found to vary with excitation and emission wavelength with few hundred picoseconds average fluorescence lifetime. Fluorescence correlation spectroscopy data depicts slower diffusion at red excitation compared to blue excitation in confocal volume than conventionally synthesized colloids proving presence of multiple sizes. The optical properties of the particles are dependent upon the excitation wavelength used and the emission wavelength collected.

Original languageEnglish
Pages (from-to)72-76
Number of pages5
JournalChemical Physics Letters
Volume549
DOIs
StatePublished - 11 Oct 2012

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Nanoclusters
nanoclusters
Polyelectrolytes
Silver
Fluorescence
silver
Wavelength
optimization
evaluation
fluorescence
excitation
Colloids
wavelengths
Luminance
Optical properties
Spectroscopy
Polarization
colloids
brightness
templates

Cite this

Raut, Sangram Limbaji ; Rich, Ryan ; Akopova, Irina ; Thyrhaug, Erling ; Shtoyko, Tanya ; Shumilov, Dimytro ; Gryczynski, Zygmunt ; Gryczynski, Ignacy. / Fluorescent polyelectrolyte capped silver nanoclusters : Optimization and spectroscopic evaluation. In: Chemical Physics Letters. 2012 ; Vol. 549. pp. 72-76.
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Fluorescent polyelectrolyte capped silver nanoclusters : Optimization and spectroscopic evaluation. / Raut, Sangram Limbaji; Rich, Ryan; Akopova, Irina; Thyrhaug, Erling; Shtoyko, Tanya; Shumilov, Dimytro; Gryczynski, Zygmunt; Gryczynski, Ignacy.

In: Chemical Physics Letters, Vol. 549, 11.10.2012, p. 72-76.

Research output: Contribution to journalArticle

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AU - Rich, Ryan

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AU - Shtoyko, Tanya

AU - Shumilov, Dimytro

AU - Gryczynski, Zygmunt

AU - Gryczynski, Ignacy

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