Assembly and Characterization of Polyurethane–Gold Nanoparticle Conjugates |
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| Authors: | Tatjana Romaskevic Modestas Sedlevicius Saulute Budriene Arunas Ramanavicius Natalija Ryskevic Saulius Miasojedovas Almira Ramanaviciene |
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| Affiliation: | 1. Division of Immunotechnology, State Research Institute Center for Innovative Medicine, Zygimantu 9, 01102 Vilnius, Lithuania;2. Department of Polymer Chemistry, Vilnius University, Naugarduko 24, 03225, Vilnius, Lithuania;3. NanoTechnas ‐ Center of Nanotechnology and Material Science, Department of Analytical and Environmental Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania;4. Institute of Applied Research, Vilnius University, Sauletekio al. 9‐III, 10222 Vilnius, Lithuania |
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| Abstract: | The PU/Au‐NPs conjugates based on poly(vinyl alcohol)‐containing polyurethane microparticles coated with Au‐NPs are prepared by a heat‐treated method. The PU/Au‐NPs conjugates are characterized by FT‐IR , SEM, TEM analysis. The appearance of characteristic peaks in the FT‐IR spectra at 1574 and 1624 cm?1, which are attributed to urethane groups, are presented for both PU and PU/Au‐NPs conjugate. The absorption band at 1716–1718 cm?1, attributed to the hydrogen‐bonded urethane carbonyl groups of PU/Au‐NPs(13nm)‐A is higher than that obtained for unmodified PU. The Au‐NPs(13nm) are found to be well dispersed in the PU. The Au‐NPs(3.5nm) tend toward agglomeration when they are entrapped within PU. It is determined, that Au‐NPs present in PU‐Au conjugates quench the luminescence of PU. |
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| Keywords: | luminescence gold nanoparticles modification polyurethane‐gold conjugates poly(vinyl alcohol) |
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