Polymer Functional Nanodiamonds by Light-Induced Ligation

Wuest, K. N. R., Trouillet, V., Goldmann, A. S., Stenzel, M. H., & Barner-Kowollik, C. (2016) Polymer Functional Nanodiamonds by Light-Induced Ligation. Macromolecules, 49(5).

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Abstract

A light-triggered strategy to functionalize nanodiamonds (NDs) with well-defined functional polymers is presented. The employed grafting approach is based on o-methylbenzaldehydes, which upon UV irradiation form o-quinodimethanes that undergo Diels-Alder reactions with dienophiles. A series of well-defined maleimide end-group functional polymers, i.e., poly(styrene) (Mn = 5800 g mol-1; D = 1.2), poly(N-isopropylacrylamide) (Mn = 5800 g mol-1, D = 1.2), and poly(2-(2′,3′,4′,6′-tetra-O-acetyl-α-d-mannosyloxy)ethyl methacrylate) (Mn = 24 300, 39 000, and 58 800 g mol-1, D ≤ 1.3), were prepared via reversible addition-fragmentation chain transfer (RAFT) polymerization of protected maleimide functional RAFT agents. After deprotection of the furan-protected maleimide end groups, the polymers were photografted to o-methylbenzaldehyde functional NDs and characterized in detail via infrared (IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). The grafting density decreases with increasing polymer chain length (6.9-3.8 μmol g-1). Moreover, the binding of the glycopolymer functional NDs to the lectin Concanavalin A was demonstrated with a turbidity assay. © 2016 American Chemical Society.

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ID Code: 99481
Item Type: Journal Article
Refereed: Yes
Additional Information: Export Date: 5 September 2016
CODEN: MAMOB
Correspondence Address: Stenzel, M.H.; Centre for Advanced Macromolecular Design (CAMD), University of New South WalesAustralia; email: m.stenzel@unsw.edu.au
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DOI: 10.1021/acs.macromol.5b02607
ISSN: 00249297
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 22 Sep 2016 04:50
Last Modified: 25 Sep 2016 21:41

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