Synthesis with Single Macromolecules: Covalent Connection between a Neutral Dendronized Polymer and Polyelectrolyte Chains as well as Graphene Edges
✍ Scribed by Jörg Barner; Rabie Al-Hellani; A. Dieter Schlüter; Jürgen P. Rabe
- Book ID
- 102943124
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 531 KB
- Volume
- 31
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
Single chains of a neutral, dendronized polymer with peripheral azide groups (PG3A) are co‐deposited onto molecularly modified graphite substrates with a positively charged dendronized polymer (PG2) as well as with negatively charged plasmid __ds__DNA. PG3A is also prepared near graphite step‐edges. Single PG3A chains are moved with a scanning force microscope tip, into close contact with either of the two polyelectrolytes, as well as the step‐edge at predetermined positions. Treating these structures in situ with UV light leads to photochemically induced cross‐linking between the PG3A chains carrying azide groups and PG2, __ds__DNA, and graphite step‐edges, respectively, which is proven by mechanically challenging the “welding” points by pulling on the molecules with the SFM‐tip.
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