Poly(2‐(dimethylamino)ethyl methacrylate) Brushes with Incorporated Nanoparticles as a SERS Active Sensing Layer |
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| Authors: | Smrati Gupta Mukesh Agrawal Marc Conrad Naima Aurelia Hutter Phillip Olk Frank Simon Lukas M. Eng Manfred Stamm Rainer Jordan |
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| Affiliation: | 1. Professur für Makromolekulare Chemie, Department Chemie, Technische Universit?t Dresden, Zellescher Weg 19, 01069 Dresden (Germany);2. Leibniz‐Institut für Polymerforschung Dresden e.V. Hohe Strasse 6, 01069 Dresden (Germany);3. Wacker‐Lehrstuhl für Makromolekulare Chemie, Technische Universit?t München Lichtenbergstr. 4, 85747 Garching, München (Germany);4. Institut für Angewandte Photophysik, 01062 Dresden (Germany) |
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| Abstract: | A simple, fast, and versatile approach to the fabrication of outstanding surface enhanced Raman spectroscopy (SERS) substrates by exploiting the optical properties of the Ag nanoparticles and functional as well as organizational characteristics of the polymer brushes is reported. First, poly(2‐(dimethylamino)ethyl methacrylate) brushes are synthesized directly on glassy carbon by self‐initiated photografting and photopolymerization and thoroughly characterized in terms of their thickness, wettability, morphology, and chemical structure by means of ellipsometry, contact angle, AFM, and XPS, respectively. Second, Ag nanoparticles are homogeneously immobilized into the brush layer, resulting in a sensor platform for the detection of organic molecules by SERS. The surface enhancement factor (SEF) as determined by the detection of Rhodamine 6G is calculated as 6 × 106. |
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| Keywords: | hybrid materials nanoparticles polymer brushes surface enhanced Raman spectroscopy surface plasmon resonance |
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