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Cooperative Self-Assembly of Adenosine and Uridine Nucleotides on a 2D Synthetic Template

✍ Scribed by Dmitry S. Turygin; Michael Subat; Oleg A. Raitman; Vladimir V. Arslanov; Burkhard König; Maria A. Kalinina

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
190 KB
Volume
118
Category
Article
ISSN
0044-8249

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✦ Synopsis

This paper describes a two-dimensional chemical system in which a divalent "template" guides and controls the stepwise and cooperative self-assembly mediated by base pairing of adenosine and uridine nucleotides.

Multiple hydrogen bonding and base pairing constitute one of the most widely studied classes of noncovalent interactions in supramolecular chemistry. [1] The precision with which nature utilizes complementary weak bonding to guide self-assembly of complex structures remains a fascinating challenge for surface chemistry that aims to develop novel approaches to interfacial sensing and nanofabrication. [2] To date, attempts to use base pairing as a basis for planar molecular-recognition systems have focused on self-assembled monolayers (SAMs) [3, 4] or Langmuir monolayers [5] that are formed from compounds bearing nucleobases or their synthetic analogues. Although exceptionally useful in the precise vertical alignment of oligo/polynucleotides on solid supports, [6] the SAM-based methods are unsuitable for lateral tailoring of recognition surfaces with different types of bases. This is mostly because of steric hindrance and phase separation of monolayer constituents. [3,7] On the other hand, Langmuir monolayers enable fine-tuning of steric conditions in highly ordered films comprised of different entities at air/ water interfaces, [8] but their practical applicability is severely limited. Herein, we use a novel surface-design scheme that combines the advantages of SAM-based and Langmuir-Blodgett (LB) monolayer approaches. This allows for precise harboring of arbitrary combinations of complementary nucleotides in planar films through sterically induced, coop-

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## Dedicated to Professor Manfred Regitz on the occasion of his 65th birthday Over the past decade, the principles of recognition-driven, spontaneous self-assembly have become further elucidated. In such processes, the overall structure of the product is [\*] Prof.