TY - GEN
T1 - Spatially selective modification of gold nanorods
AU - Olshtrem, Anastasiia
AU - Guselnikova, Olga
AU - Postnikov, Pavel
AU - Svorcík, Vaclav
AU - Lyutakov, Oleksiy
N1 - Publisher Copyright:
© NANOCON 2019.All right reserved.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020
Y1 - 2020
N2 - In this contribution, we present the new approach for plasmon assisted grafting of anisotropic gold nanorods (AuNRs) with spatial selectivity, which was used for creation of nanoparticles with amphiphilic surface. The surface modification was carried out in two stages with implementation of: (I) the plasmon-activated iodonium salt (IS), and (II) the aryl diazonium salt (ADT). The plasmon assisted activation of IS was performed under the illumination of AuNRs with wavelength corresponded to the longitudinal plasmon resonance of AuNRs and resulted in grafting of organic moieties (Ar-(CF3)2) to AuNRs edges. The AuNRs lateral sides remains ungrafted and were further decorated with ADT-COOH. As result of varying substituents in the chemical structures of iodonium and diazonium salts the amphiphilic NPs with spatially divided hydrophobic (grafted to AuNRs edges) and hydrophilic (grafted to AuNRs lateral sides) chemical groups were obtained. Corresponded UV-Vis and Raman measurements confirm the success of AuNRs chemical grafting. As result, the AuNRs with spatially separated chemical moieties were created in very simple way, primarily in solution and without the need of sophisticated technique of NPs mobilization or their surface screening.
AB - In this contribution, we present the new approach for plasmon assisted grafting of anisotropic gold nanorods (AuNRs) with spatial selectivity, which was used for creation of nanoparticles with amphiphilic surface. The surface modification was carried out in two stages with implementation of: (I) the plasmon-activated iodonium salt (IS), and (II) the aryl diazonium salt (ADT). The plasmon assisted activation of IS was performed under the illumination of AuNRs with wavelength corresponded to the longitudinal plasmon resonance of AuNRs and resulted in grafting of organic moieties (Ar-(CF3)2) to AuNRs edges. The AuNRs lateral sides remains ungrafted and were further decorated with ADT-COOH. As result of varying substituents in the chemical structures of iodonium and diazonium salts the amphiphilic NPs with spatially divided hydrophobic (grafted to AuNRs edges) and hydrophilic (grafted to AuNRs lateral sides) chemical groups were obtained. Corresponded UV-Vis and Raman measurements confirm the success of AuNRs chemical grafting. As result, the AuNRs with spatially separated chemical moieties were created in very simple way, primarily in solution and without the need of sophisticated technique of NPs mobilization or their surface screening.
KW - Amphiphilic nanoparticles
KW - Gold nanorods
KW - Plasmon-assisted chemical transformation
KW - Surface grafting
UR - http://www.scopus.com/inward/record.url?scp=85097178417&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85097178417&partnerID=8YFLogxK
U2 - 10.37904/nanocon.2019.8614
DO - 10.37904/nanocon.2019.8614
M3 - Conference contribution
AN - SCOPUS:85097178417
T3 - NANOCON Conference Proceedings - International Conference on Nanomaterials
SP - 379
EP - 384
BT - NANOCON 2019 - Conference Proceedings, 11th International Conference on Nanomaterials - Research and Application
PB - TANGER Ltd.
T2 - 11th International Conference on Nanomaterials - Research and Application, NANOCON 2019
Y2 - 16 October 2019 through 18 October 2019
ER -