Agglomeration behavior of lipid capped gold nanoparticles
DOI:
10.1007/s1105URI (for links/citations):
https://link.springer.com/article/10.1007/s11051-018-4215-5https://elib.sfu-kras.ru/handle/2311/111224
Author:
Ranjan, R.
Kirillova, M. A.
Esimbekova, E. N.
Жарков, Сергей Михайлович
Kratasyuk, V. A.
Corporate Contributor:
Политехнический институт
Институт фундаментальной биологии и биотехнологии
Кафедра материаловедения и технологии обработки материалов
Кафедра биофизики
Date:
2018-04Journal Name:
Journal of Nanoparticle ResearchJournal Quartile in Scopus:
Q2Journal Quartile in Web of Science:
Q2Bibliographic Citation:
Ranjan, R. Agglomeration behavior of lipid capped gold nanoparticles [Текст] / R. Ranjan, M. A. Kirillova, E. N. Esimbekova, Сергей Михайлович Жарков, V. A. Kratasyuk // Journal of Nanoparticle Research. — 2018. — Т. 20 (№ 4). — С. 107-11Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Abstract:
The current investigation deciphers aggregation
pattern of gold nanoparticles (AuNPs) and lipidtreated
AuNPs when subjected to aqueous sodium chloride
solution with increasing ionic strengths (100–
400 nM). AuNPs were synthesized using 0.29 mM
chloroauric acid and by varying the concentrations of
trisodium citrate (AuNP1 1.55 mM, AuNP2 3.1 mM)
and silver nitrate (AuNP3 5.3 μM, AuNP4 10.6 μM)
with characteristic LSPR peaks in the range of 525–
533 nm. TEM analysis revealed AuNPs to be predominantly
faceted nanocrystals with the average size of AuNP1 to be 35 ± 5 nm, AuNP2 15 ± 5 nm, AuNP3
30 ± 5 nm, and AuNP4 30 ± 5 nm and the zeta-average
for AuNPs were calculated to be 31.23, 63.80, 26.08,
and 28 nm respectively. Induced aggregation was observed
within 10 s in all synthesized AuNPs while lipidtreated
AuNP2 (AuNP2-L) was found towithstand ionic
interferences at all concentration levels. However, lipidtreated
AuNPs synthesized using silver nitrate and
1.55 mM trisodium citrate (AuNP3, AuNP4) showed
much lower stability. The zeta potential values of lipidtreated
AuNPs (AuNP1-L-1x/200, − 17.93 ± 1.02 mV;
AuNP2-L-1x/200, − 21.63 ± 0.70; AuNP3-L-1x/200, −
14.54 ± 0.90; AuNP3-L-1x/200 − 13.77 ± 0.83) justified
these observations. To summarize, AuNP1 and AuNP2
treated with lipid mixture 1 equals or above 1x/200 or
1x/1000 respectively showed strong resistance against
ionic interferences (up to 400 mM NaCl). Use of lipid
mixture 1 for obtaining highly stable AuNPs also provided
functional arms of various lengths which can be
used for covalent coupling.