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Proceedings Paper

Thiol-ene reaction as tool for crosslinking of polynorbornene micelles in the nanoscale
Author(s): Barbara Rupp; Thomas Bauer; Christian Slugovc
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Paper Abstract

The thiol-ene reaction is a established photoreaction of multifunctional thiols and enes. Virtually any type of ene will participate in a free radical polymerisation process with a thiol. An advantage over many other photochemical reactions is that the reaction proceeds almost as rapidly in ambient conditions as in inert atmosphere. In this work we introduce the UV-crosslinking of polynorbornenes made by ring opening metathesis polymerization making use of the residual double bond in the polymer backbone. The crosslinking experiments were done in thin films and were followed by FTIR measurements, to proof the accessibility of double-bonds in the polymers for the addition of the thiols. As a result of these pre-experiments we created flexible and light transmitting films. To further increase the scope of this reaction, amphiphilic block copolymers were prepared and used to form block copolymer micelles in a selective solvent, which were subsequently crosslinked with pentaerythritol tetra(3-mercaptopropionate) (PETMP). FT-IR, DLS and SEM-measurements were used to prove the successful crosslinking and thus nanoparticle formation.

Paper Details

Date Published: 1 September 2009
PDF: 9 pages
Proc. SPIE 7393, Nanophotonic Materials VI, 73930Y (1 September 2009); doi: 10.1117/12.829217
Show Author Affiliations
Barbara Rupp, Polymer Competence Ctr. Leoben GmbH (Austria)
Thomas Bauer, Graz Univ. of Technology (Austria)
Christian Slugovc, Graz Univ. of Technology (Austria)

Published in SPIE Proceedings Vol. 7393:
Nanophotonic Materials VI
Stefano Cabrini; Taleb Mokari, Editor(s)

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