Geitner R, Goetz S, Stach R, Siegmann M, Krebs P, Zechel S, Schreyer K, Winter A, Hager MD, Schubert US, Gräfe S, Dietzek B, Mizaikoff B, Schmitt M, Popp J (2018)
Publication Type: Journal article
Publication year: 2018
Book Volume: 122
Pages Range: 2677-2687
Journal Issue: 10
The presented study reports the synthesis and the vibrational spectroscopic characterization of different matrix-embedded model photocatalysts. The goal of the study is to investigate the interaction of a polymer matrix with photosensitizing dyes and metal complexes for potential future photocatalytic applications. The synthesis focuses on a new rhodamine B derivate and a Pt(II) terpyridine complex, which both contain a polymerizable methacrylate moiety and an acid labile acylhydrazone group. The methacrylate moieties are afterward utilized to synthesize functional model hydrogels mainly consisting of poly(ethylene glycol) methacrylate units. The pH-dependent and temperature-dependent behavior of the hydrogels is investigated by means of Raman and IR spectroscopy assisted by density functional theory calculations and two-dimensional correlation spectroscopy. The spectroscopic results reveal that the Pt(II) terpyridine complex can be released from the polymer matrix by cleaving the C=N bond in an acid environment. The same behavior could not be observed in the case of the rhodamine B dye although it features a comparable C=N bond. The temperature-dependent study shows that the water evaporation has a significant influence neither on the molecular structure of the hydrogel nor on the model photocatalytic moieties.
APA:
Geitner, R., Goetz, S., Stach, R., Siegmann, M., Krebs, P., Zechel, S.,... Popp, J. (2018). Hydrogel-Embedded Model Photocatalytic System Investigated by Raman and IR Spectroscopy Assisted by Density Functional Theory Calculations and Two-Dimensional Correlation Analysis. Journal of Physical Chemistry A, 122(10), 2677-2687. https://doi.org/10.1021/acs.jpca.7b12648
MLA:
Geitner, Robert, et al. "Hydrogel-Embedded Model Photocatalytic System Investigated by Raman and IR Spectroscopy Assisted by Density Functional Theory Calculations and Two-Dimensional Correlation Analysis." Journal of Physical Chemistry A 122.10 (2018): 2677-2687.
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