The spectral relaxation dynamics and the molecular crowding effect of silver nanoclusters synthesized in the polymer scaffold

Kai Hung Wang, Chih Wei Chang

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We have performed a comprehensive study on the spectral relaxation dynamics of silver nanoclusters (AgNCs) synthesized in poly(methacrylic acid) (PMAA). In different polymer conformations and solvents, the spectral relaxation dynamics of PMAA-AgNCs can be globally fitted by a bi-exponential decay, the short component is about 0.2-0.3 ns, whereas the long component is in the range 1-3 ns. The spectral relaxation is associated with the energy transfer dynamics and the excitation of multiple emissive AgNCs. In this study, we have demonstrated the feasibility of using AgNCs as a fluorescent probe for fluorescence anisotropy studies. Meanwhile, the molecular crowding effects of the PMAA-AgNCs were addressed using the Triton X-100 reverse micelles. The results indicate that the fluorescence quantum yield of the AgNCs will be significantly increased under crowded conditions, which is beneficial for their usage in intracellular imaging studies.

Original languageEnglish
Pages (from-to)23140-23146
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume17
Issue number35
DOIs
Publication statusPublished - 2015 Aug 4

Fingerprint

crowding
Nanoclusters
nanoclusters
Silver
Scaffolds
Polymers
silver
acids
polymers
Fluorescence
fluorescence
Octoxynol
Micelles
Quantum yield
Fluorescent Dyes
Energy transfer
Conformations
micelles
Anisotropy
energy transfer

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

@article{212de2a0c6154c298a4e082ad2adf09b,
title = "The spectral relaxation dynamics and the molecular crowding effect of silver nanoclusters synthesized in the polymer scaffold",
abstract = "We have performed a comprehensive study on the spectral relaxation dynamics of silver nanoclusters (AgNCs) synthesized in poly(methacrylic acid) (PMAA). In different polymer conformations and solvents, the spectral relaxation dynamics of PMAA-AgNCs can be globally fitted by a bi-exponential decay, the short component is about 0.2-0.3 ns, whereas the long component is in the range 1-3 ns. The spectral relaxation is associated with the energy transfer dynamics and the excitation of multiple emissive AgNCs. In this study, we have demonstrated the feasibility of using AgNCs as a fluorescent probe for fluorescence anisotropy studies. Meanwhile, the molecular crowding effects of the PMAA-AgNCs were addressed using the Triton X-100 reverse micelles. The results indicate that the fluorescence quantum yield of the AgNCs will be significantly increased under crowded conditions, which is beneficial for their usage in intracellular imaging studies.",
author = "Wang, {Kai Hung} and Chang, {Chih Wei}",
year = "2015",
month = "8",
day = "4",
doi = "10.1039/c5cp03175c",
language = "English",
volume = "17",
pages = "23140--23146",
journal = "Physical Chemistry Chemical Physics",
issn = "1463-9076",
publisher = "Royal Society of Chemistry",
number = "35",

}

The spectral relaxation dynamics and the molecular crowding effect of silver nanoclusters synthesized in the polymer scaffold. / Wang, Kai Hung; Chang, Chih Wei.

In: Physical Chemistry Chemical Physics, Vol. 17, No. 35, 04.08.2015, p. 23140-23146.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The spectral relaxation dynamics and the molecular crowding effect of silver nanoclusters synthesized in the polymer scaffold

AU - Wang, Kai Hung

AU - Chang, Chih Wei

PY - 2015/8/4

Y1 - 2015/8/4

N2 - We have performed a comprehensive study on the spectral relaxation dynamics of silver nanoclusters (AgNCs) synthesized in poly(methacrylic acid) (PMAA). In different polymer conformations and solvents, the spectral relaxation dynamics of PMAA-AgNCs can be globally fitted by a bi-exponential decay, the short component is about 0.2-0.3 ns, whereas the long component is in the range 1-3 ns. The spectral relaxation is associated with the energy transfer dynamics and the excitation of multiple emissive AgNCs. In this study, we have demonstrated the feasibility of using AgNCs as a fluorescent probe for fluorescence anisotropy studies. Meanwhile, the molecular crowding effects of the PMAA-AgNCs were addressed using the Triton X-100 reverse micelles. The results indicate that the fluorescence quantum yield of the AgNCs will be significantly increased under crowded conditions, which is beneficial for their usage in intracellular imaging studies.

AB - We have performed a comprehensive study on the spectral relaxation dynamics of silver nanoclusters (AgNCs) synthesized in poly(methacrylic acid) (PMAA). In different polymer conformations and solvents, the spectral relaxation dynamics of PMAA-AgNCs can be globally fitted by a bi-exponential decay, the short component is about 0.2-0.3 ns, whereas the long component is in the range 1-3 ns. The spectral relaxation is associated with the energy transfer dynamics and the excitation of multiple emissive AgNCs. In this study, we have demonstrated the feasibility of using AgNCs as a fluorescent probe for fluorescence anisotropy studies. Meanwhile, the molecular crowding effects of the PMAA-AgNCs were addressed using the Triton X-100 reverse micelles. The results indicate that the fluorescence quantum yield of the AgNCs will be significantly increased under crowded conditions, which is beneficial for their usage in intracellular imaging studies.

UR - http://www.scopus.com/inward/record.url?scp=84940707167&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84940707167&partnerID=8YFLogxK

U2 - 10.1039/c5cp03175c

DO - 10.1039/c5cp03175c

M3 - Article

C2 - 26279125

AN - SCOPUS:84940707167

VL - 17

SP - 23140

EP - 23146

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

SN - 1463-9076

IS - 35

ER -