TY  - JOUR
T1  - Synthesis and optical characterization of seed silver nanoparticles in situ coated with poly-(N-isopropylacrylamide)
AU  - M.M. Khutko
AU  - A.M. Lopatynskyi
AU  - V.K. Lytvyn
AU  - P.V. Demydov
AU  - V.I. Chegel
JO  - Semiconductor Physics, Quantum Electronics & Optoelectronics
VL  - 28
IS  - 4
SP  - 449
EP  - 455
PY  - 2025
DO  - 10.15407/spqeo28.04.449
UR  - https://doi.org/10.15407/spqeo28.04.449
AB  - Due to their outstanding physicochemical properties, noble metal nanoparticles are widely exploited across multiple fields, including nanomedicine and sensors. In the nanostructure synthesis process, a stabilizing agent is usually introduced to prevent their aggregation. In this work, a poly-(N-isopropylacrylamide) (pNIPAM) thermosensitive polymer coating was synthesized in situ as a stabilizing layer during the formation of seed silver nanoparticles and characterized using UV-vis spectrophotometry and dynamic light scattering. The evolution of pNIPAM coating on the surface of seed silver nanoparticles was followed by studying the changes in the light extinction spectra of the nanoparticle solutions, caused by localized surface plasmon resonance and Rayleigh scattering. The sizes of the studied particles, determined by dynamic light scattering, indicate the formation of electrostatic chelate complexes of NIPAM or pNIPAM with silver ions or nanoparticles, which was confirmed by static and dynamic molecular mechanics (MMX) calculations in PCModel software.
KW  - silver nanostructures
KW  - poly-(N-isopropylacrylamide)
KW  - localized surface plasmon resonance
KW  - light scattering
KW  - chelate complexes
KW  - molecular mechanics calculations
ER  -