Assembly and Characterization of Polyurethane–Gold Nanoparticle Conjugates

✍ Scribed by Tatjana Romaskevic; Modestas Sedlevicius; Saulute Budriene; Arunas Ramanavicius; Natalija Ryskevic; Saulius Miasojedovas; Almira Ramanaviciene

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 811 KB
• Volume: 212
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.201100390

✦ Synopsis

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.