Soft poly(N-vinylcaprolactam) nanogels surface-decorated with AuNPs. Response to temperature, light, and RF-field

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Soft poly(N-vinylcaprolactam) nanogels surface-decorated with AuNPs. Response to temperature, light, and RF-field. / Siirilä, Joonas; Karesoja, Mikko; Pulkkinen, Petri; Malho, Jani Markus; Tenhu, Heikki.

julkaisussa: European Polymer Journal, Vuosikerta 115, 01.06.2019, s. 59-69.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Siirilä, Joonas ; Karesoja, Mikko ; Pulkkinen, Petri ; Malho, Jani Markus ; Tenhu, Heikki. / Soft poly(N-vinylcaprolactam) nanogels surface-decorated with AuNPs. Response to temperature, light, and RF-field. Julkaisussa: European Polymer Journal. 2019 ; Vuosikerta 115. Sivut 59-69.

Bibtex - Lataa

@article{1c6fb778325d47c0b22ec50e814db9b1,
title = "Soft poly(N-vinylcaprolactam) nanogels surface-decorated with AuNPs. Response to temperature, light, and RF-field",
abstract = "Soft poly(N-vinylcaprolactam) (PNVCL) based nanogels were prepared and surface-decorated with gold nanoparticles (AuNPs). The applicability of the hybrid nanogels (PNVCL-AuNPs) as carriers for low molar mass substances was of special interest. AuNPs protected with a mixture of 11-azidoundecanothiol and 11-mercaptoundecanoic acid were bound to propargyl functionalized PNVCL based nanogels. Acidic groups on the surfaces of AuNPs and PNVCL based nanogels stabilize the particle dispersions against precipitation above the phase transition temperature of PNVCL. Both the neat PNVCL nanogels and the PVCL-AuNPs shrink upon heating the dispersions. Even though the AuNPs are mainly located in the soft surface layer of the nanogels, the PNVCL-AuNPs respond to visible light as well as to radio-frequency (RF) irradiation by shrinking due to the AuNPs acting as nanoheaters. Interactions of linear PNVCL, PNVCL nanogels and PNVCL-AuNPs with two fluorescent probes were studied as function of increasing temperature. Once bound to the polymer the fluorescent probe may or may not be released from it, depending on its polarity and water solubility. Presence of AuNPs changed the release behavior of the water soluble charged fluorescent probe from the nanogels.",
keywords = "Cargo delivery systems, Gold nanoparticles, Light responsive, Radio-frequency responsive, Surface decorated particles, Thermoresponsive, Vinyl lactams, Water-dispersed nanogels",
author = "Joonas Siiril{\"a} and Mikko Karesoja and Petri Pulkkinen and Malho, {Jani Markus} and Heikki Tenhu",
year = "2019",
month = "6",
day = "1",
doi = "10.1016/j.eurpolymj.2019.03.010",
language = "English",
volume = "115",
pages = "59--69",
journal = "European Polymer Journal",
issn = "0014-3057",
publisher = "Elsevier Limited",

}

RIS - Lataa

TY - JOUR

T1 - Soft poly(N-vinylcaprolactam) nanogels surface-decorated with AuNPs. Response to temperature, light, and RF-field

AU - Siirilä, Joonas

AU - Karesoja, Mikko

AU - Pulkkinen, Petri

AU - Malho, Jani Markus

AU - Tenhu, Heikki

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Soft poly(N-vinylcaprolactam) (PNVCL) based nanogels were prepared and surface-decorated with gold nanoparticles (AuNPs). The applicability of the hybrid nanogels (PNVCL-AuNPs) as carriers for low molar mass substances was of special interest. AuNPs protected with a mixture of 11-azidoundecanothiol and 11-mercaptoundecanoic acid were bound to propargyl functionalized PNVCL based nanogels. Acidic groups on the surfaces of AuNPs and PNVCL based nanogels stabilize the particle dispersions against precipitation above the phase transition temperature of PNVCL. Both the neat PNVCL nanogels and the PVCL-AuNPs shrink upon heating the dispersions. Even though the AuNPs are mainly located in the soft surface layer of the nanogels, the PNVCL-AuNPs respond to visible light as well as to radio-frequency (RF) irradiation by shrinking due to the AuNPs acting as nanoheaters. Interactions of linear PNVCL, PNVCL nanogels and PNVCL-AuNPs with two fluorescent probes were studied as function of increasing temperature. Once bound to the polymer the fluorescent probe may or may not be released from it, depending on its polarity and water solubility. Presence of AuNPs changed the release behavior of the water soluble charged fluorescent probe from the nanogels.

AB - Soft poly(N-vinylcaprolactam) (PNVCL) based nanogels were prepared and surface-decorated with gold nanoparticles (AuNPs). The applicability of the hybrid nanogels (PNVCL-AuNPs) as carriers for low molar mass substances was of special interest. AuNPs protected with a mixture of 11-azidoundecanothiol and 11-mercaptoundecanoic acid were bound to propargyl functionalized PNVCL based nanogels. Acidic groups on the surfaces of AuNPs and PNVCL based nanogels stabilize the particle dispersions against precipitation above the phase transition temperature of PNVCL. Both the neat PNVCL nanogels and the PVCL-AuNPs shrink upon heating the dispersions. Even though the AuNPs are mainly located in the soft surface layer of the nanogels, the PNVCL-AuNPs respond to visible light as well as to radio-frequency (RF) irradiation by shrinking due to the AuNPs acting as nanoheaters. Interactions of linear PNVCL, PNVCL nanogels and PNVCL-AuNPs with two fluorescent probes were studied as function of increasing temperature. Once bound to the polymer the fluorescent probe may or may not be released from it, depending on its polarity and water solubility. Presence of AuNPs changed the release behavior of the water soluble charged fluorescent probe from the nanogels.

KW - Cargo delivery systems

KW - Gold nanoparticles

KW - Light responsive

KW - Radio-frequency responsive

KW - Surface decorated particles

KW - Thermoresponsive

KW - Vinyl lactams

KW - Water-dispersed nanogels

UR - http://www.scopus.com/inward/record.url?scp=85062809865&partnerID=8YFLogxK

U2 - 10.1016/j.eurpolymj.2019.03.010

DO - 10.1016/j.eurpolymj.2019.03.010

M3 - Article

VL - 115

SP - 59

EP - 69

JO - European Polymer Journal

JF - European Polymer Journal

SN - 0014-3057

ER -

ID: 32620316