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Optical extinction coefficients of gold nanoparticle aggregates by small angle X-ray scattering (SAXS)

The size distribution of gold hydrosol aggregates induced by ascorbic acid has been characterised by small angle x-ray scattering (SAXS). The results are used to compute the extinction coefficients around the localised surface plasmon resonance (LSPR) wavelengths and verified by comparing experiment...

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Main Authors: Chong, J. C., Bidin, N., Lee, S. L., Sanagi, M. M., Rugmai, S., Soontaranon, S.
格式: Article
语言:English
出版: Penerbit Universiti Sains Malaysia 2017
主题:
QD Chemistry
在线阅读:http://eprints.utm.my/id/eprint/76533/1/NoriahBidin2017_OpticalExtinctionCoefficientsofGoldNanoparticle.pdf
http://eprints.utm.my/id/eprint/76533/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85017443228&doi=10.21315%2fjps2017.28.1.5&partnerID=40&md5=c331446fc5c89948b3dc3b140613ee76
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spelling my.utm.765332018-05-31T09:23:57Z http://eprints.utm.my/id/eprint/76533/ Optical extinction coefficients of gold nanoparticle aggregates by small angle X-ray scattering (SAXS) Chong, J. C. Bidin, N. Lee, S. L. Sanagi, M. M. Rugmai, S. Soontaranon, S. QD Chemistry The size distribution of gold hydrosol aggregates induced by ascorbic acid has been characterised by small angle x-ray scattering (SAXS). The results are used to compute the extinction coefficients around the localised surface plasmon resonance (LSPR) wavelengths and verified by comparing experimental extinction spectra obtained via spectrophotometry. Citrate refluxed gold nanoparticles with initial ionic ratio of 0.94 measured by fitting an averaged intensity profile from two scattering lengths exhibit lognormal distribution with mean diameter of 27.4 nm (σd = 14.4 nm), while ascorbic acid induced agglomeration on gold nanoparticles at pH of 3.2 has mean diameter of 51.2 nm (σd = 19.2 nm). Both experiment and simulated optical extinction shows agreement in LSPR peak wavelength corresponding to their respective mean particle sizes. Penerbit Universiti Sains Malaysia 2017 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/76533/1/NoriahBidin2017_OpticalExtinctionCoefficientsofGoldNanoparticle.pdf Chong, J. C. and Bidin, N. and Lee, S. L. and Sanagi, M. M. and Rugmai, S. and Soontaranon, S. (2017) Optical extinction coefficients of gold nanoparticle aggregates by small angle X-ray scattering (SAXS). Journal of Physical Science, 28 (1). pp. 61-71. ISSN 1675-3402 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85017443228&doi=10.21315%2fjps2017.28.1.5&partnerID=40&md5=c331446fc5c89948b3dc3b140613ee76 DOI:10.21315/jps2017.28.1.5
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic QD Chemistry
spellingShingle QD Chemistry
Chong, J. C.
Bidin, N.
Lee, S. L.
Sanagi, M. M.
Rugmai, S.
Soontaranon, S.
Optical extinction coefficients of gold nanoparticle aggregates by small angle X-ray scattering (SAXS)
description The size distribution of gold hydrosol aggregates induced by ascorbic acid has been characterised by small angle x-ray scattering (SAXS). The results are used to compute the extinction coefficients around the localised surface plasmon resonance (LSPR) wavelengths and verified by comparing experimental extinction spectra obtained via spectrophotometry. Citrate refluxed gold nanoparticles with initial ionic ratio of 0.94 measured by fitting an averaged intensity profile from two scattering lengths exhibit lognormal distribution with mean diameter of 27.4 nm (σd = 14.4 nm), while ascorbic acid induced agglomeration on gold nanoparticles at pH of 3.2 has mean diameter of 51.2 nm (σd = 19.2 nm). Both experiment and simulated optical extinction shows agreement in LSPR peak wavelength corresponding to their respective mean particle sizes.
format Article
author Chong, J. C.
Bidin, N.
Lee, S. L.
Sanagi, M. M.
Rugmai, S.
Soontaranon, S.
author_facet Chong, J. C.
Bidin, N.
Lee, S. L.
Sanagi, M. M.
Rugmai, S.
Soontaranon, S.
author_sort Chong, J. C.
title Optical extinction coefficients of gold nanoparticle aggregates by small angle X-ray scattering (SAXS)
title_short Optical extinction coefficients of gold nanoparticle aggregates by small angle X-ray scattering (SAXS)
title_full Optical extinction coefficients of gold nanoparticle aggregates by small angle X-ray scattering (SAXS)
title_fullStr Optical extinction coefficients of gold nanoparticle aggregates by small angle X-ray scattering (SAXS)
title_full_unstemmed Optical extinction coefficients of gold nanoparticle aggregates by small angle X-ray scattering (SAXS)
title_sort optical extinction coefficients of gold nanoparticle aggregates by small angle x-ray scattering (saxs)
publisher Penerbit Universiti Sains Malaysia
publishDate 2017
url http://eprints.utm.my/id/eprint/76533/1/NoriahBidin2017_OpticalExtinctionCoefficientsofGoldNanoparticle.pdf
http://eprints.utm.my/id/eprint/76533/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85017443228&doi=10.21315%2fjps2017.28.1.5&partnerID=40&md5=c331446fc5c89948b3dc3b140613ee76
_version_ 1643657336259084288
score 13.251813

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