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Controllable formation of high density SERS-active silver nanoprism layers on hybrid silica-APTES coatings

Pilipavicius, J. ; Kaleinikaite, R.; Pucetaite, Milda LU ; Velicka, Martynas; Kareiva, A. and Beganskiene, Aldona (2016) In Applied surface science 377. p.134-140
Abstract
In this work sol-gel process for preparation of the uniform hybrid silica-3-aminopropyltriethoxysilane (APTES) coatings on glass surface is presented from mechanistic point of view. The suggested synthetic approach is straightforward, scalable and provides the means to tune the amount of amino groups on the surface simply by changing concentration of APTES in the initial sol. Deposition rate of different size silver nanoprisms (AgNPRs) on hybrid silica coatings of various amounts of APTES were studied and their performance as SERS materials were probed. The acquired data shows that the deposition rate of AgNPRs can be tuned by changing the amount of APTES. The optimal amount of APTES was found to be crucial for successful AgNPRs assembly... (More)
In this work sol-gel process for preparation of the uniform hybrid silica-3-aminopropyltriethoxysilane (APTES) coatings on glass surface is presented from mechanistic point of view. The suggested synthetic approach is straightforward, scalable and provides the means to tune the amount of amino groups on the surface simply by changing concentration of APTES in the initial sol. Deposition rate of different size silver nanoprisms (AgNPRs) on hybrid silica coatings of various amounts of APTES were studied and their performance as SERS materials were probed. The acquired data shows that the deposition rate of AgNPRs can be tuned by changing the amount of APTES. The optimal amount of APTES was found to be crucial for successful AgNPRs assembly and subsequent uniformity of the final SERS substrate—too high APTES content may result in rapid non-stable aggregation and non-uniform assembly process. SERS study revealed that SERS enhancement is the strongest at moderate AgNPRs aggregation level whereas it significantly drops at high aggregation levels. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
in
Applied surface science
volume
377
pages
134 - 140
publisher
Elsevier
external identifiers
  • scopus:84962476853
ISSN
0169-4332
DOI
10.1016/j.apsusc.2016.03.169
language
English
LU publication?
no
id
243a0c68-76d8-4da6-9a3d-3d1e3f37aea4
date added to LUP
2019-03-26 10:24:48
date last changed
2019-08-06 03:16:20
@article{243a0c68-76d8-4da6-9a3d-3d1e3f37aea4,
  abstract     = {In this work sol-gel process for preparation of the uniform hybrid silica-3-aminopropyltriethoxysilane (APTES) coatings on glass surface is presented from mechanistic point of view. The suggested synthetic approach is straightforward, scalable and provides the means to tune the amount of amino groups on the surface simply by changing concentration of APTES in the initial sol. Deposition rate of different size silver nanoprisms (AgNPRs) on hybrid silica coatings of various amounts of APTES were studied and their performance as SERS materials were probed. The acquired data shows that the deposition rate of AgNPRs can be tuned by changing the amount of APTES. The optimal amount of APTES was found to be crucial for successful AgNPRs assembly and subsequent uniformity of the final SERS substrate—too high APTES content may result in rapid non-stable aggregation and non-uniform assembly process. SERS study revealed that SERS enhancement is the strongest at moderate AgNPRs aggregation level whereas it significantly drops at high aggregation levels.},
  author       = {Pilipavicius, J.  and Kaleinikaite, R. and Pucetaite, Milda and Velicka, Martynas and Kareiva, A.  and Beganskiene, Aldona},
  issn         = {0169-4332},
  language     = {eng},
  pages        = {134--140},
  publisher    = {Elsevier},
  series       = {Applied surface science},
  title        = {Controllable formation of high density SERS-active silver nanoprism layers on hybrid silica-APTES coatings},
  url          = {http://dx.doi.org/10.1016/j.apsusc.2016.03.169},
  volume       = {377},
  year         = {2016},
}