Reversible photochromism of polynorbornenes bearing spiropyran side groups

ABSTRACT: In this paper, the synthesis and characterization of poly(norbornene) homo- and copolymers bearing spiropyran side groups are described. Difficulties in the homopolymerization of spiropyrans due to the opened merocyanine form were observed leading to low polymerization yields for homopolym...

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Detalles Bibliográficos
Autores principales: Hauser, Lucas, Knall, Astrid-Caroline, Roth, Meinhart, Trimmel, Gregor, Edler, Matthias, Griesser, Thomas, Kern, Wolfgang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Vienna 2012
Materias:
Original Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4495054/
https://www.ncbi.nlm.nih.gov/pubmed/26166860
http://dx.doi.org/10.1007/s00706-012-0827-0
Descripción
Sumario:ABSTRACT: In this paper, the synthesis and characterization of poly(norbornene) homo- and copolymers bearing spiropyran side groups are described. Difficulties in the homopolymerization of spiropyrans due to the opened merocyanine form were observed leading to low polymerization yields for homopolymers while copolymers with 10 mol% spiropyran content were prepared in good yield. Spiropyrans are characterized by their reversible photochromism, which was conserved in the polymers as shown by UV–Vis spectroscopy and FT-IR spectroscopy. The switching between the apolar spiropyran form and the zwitterionic merocyanine form also leads to switchable wettability as evidenced by contact angle measurements. GRAPHICAL ABSTRACT: [Image: see text]

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