Direct mapping of RAFT controlled macromolecular growth on surfaces via single molecule force spectroscopy

Tischer, Thomas, Gralla-Koser, Robert, Trouillet, Vanessa, Barner, Leonie, Barner-Kowollik, Christopher, & Lee-Thedieck, Cornelia (2016) Direct mapping of RAFT controlled macromolecular growth on surfaces via single molecule force spectroscopy. ACS Macro Letters, 5(4), pp. 498-503.

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Single molecule force spectroscopy (SMFS) is employed to gain insight into reversible addition fragmentation chain transfer (RAFT) polymerization processes with living characteristics on glass surfaces. Surface-initiated (SI)-RAFT was selected to grow poly(hydroxyethyl methacrylate) (PHEMA). After aminolysis of the RAFT chain termini, thiol moieties serve as anchoring points for the gold tip of an atomic force microscope. The results allow to directly monitor the macro molecular growth of the surface-initiated polymerization. The obtained SMFS-based molecular weight distribution data of the polymers present on the surface indicate that the RAFT chain extension proceeds linearly with time up to high conversions. The current study thus adds SMFS as a valuable tool for the investigation of SI-RAFT polymerizations.

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ID Code: 97467
Item Type: Journal Article
Refereed: Yes
Keywords: single molecule force spectroscopy, AFM, surface, reversible addition-fragmentation chain transfer (RAFT)
DOI: 10.1021/acsmacrolett.6b00106
ISSN: 2161-1653
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Facilities: Central Analytical Research Facility
Deposited On: 28 Jul 2016 00:52
Last Modified: 28 Jul 2016 21:36

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