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Constitutional Self‐Organization of Adenine–Uracil‐Derived Hybrid Materials
Author(s) -
ArnalHérault Carole,
Barboiu Mihai,
Pasc Andreea,
Michau Mathieu,
Perriat Pascal,
van der Lee Arie
Publication year - 2007
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200700739
Subject(s) - nucleobase , supramolecular chemistry , uracil , hybrid material , crystallography , materials science , hydrogen bond , chemistry , nanotechnology , molecule , dna , crystal structure , organic chemistry , biochemistry
The alkoxysilane nucleobase adenine ( A ) and uracil ( U ) precursors described in this paper generate in solution a complex library of hydrogen‐bonded aggregates, which can be expressed in the solid state as discrete higher oligomers. The different interconverting outputs that nucleobases may form by oligomerization define a dynamic polyfunctional diversity that may be “extracted selectively” in solid state by sol–gel transcription, under the intrinsic stability of the system. After the sol–gel process, unique constitutional preference for specific geometries in hybrid materials is consistent with a preferential arrangement of nucleobase systems, favoring the self‐assembly by the Hoogsteen geometry. FTIR and NMR spectroscopy and X‐ray powder diffraction experiments demonstrate the formation of self‐organized hybrid supramolecular materials. Electron microscopy reveals the micrometric platelike morphology of the hybrid materials. The M A–U hybrid material is nanostructured in ordered circular domains of 5 nm in diameter of alternative light and dark rows with an one‐dimensional periodicity of 3.5 Å.