Issue 4, 2008
From the journal:

Journal of Materials Chemistry

Organosilicas based on purine–pyrimidinebase pair assemblies: a solid state NMR point of view

Guilhem Arrachart,a   Carole Carcel,a   Joël J. E. Moreau,a   Geoffrey Hartmeyer,b   Bruno Alonso,c   Dominique Massiot,d   Gaëlle Creff,e   Jean-Louis Bantignies,e   Philippe Dieudonne,e   Michel Wong Chi Man,*a   Gerhard Althoff,f   Florence Babonneaub  and  Christian Bonhomme*b  

* Corresponding authors

a Architectures Moléculaires et Matériaux Nanostructurés, ICG Montpellier (UMR 5253) UMII-CNRS-ENSCM-UMI, 8 rue de l'école normale, Montpellier, France

b Laboratoire de Chimie de la Matière Condensée de Paris, UMR CNRS 7574 Paris 6, 4 place Jussieu, Paris, 75252, France

c MACS, ICG Montpellier (UMR 5253) UMII-CNRS-ENSCM-UMI, 8 rue de l'école normale, Montpellier, France

d CRMHT, 1D avenue de la recherche scientifique, Orléans, France

e Laboratoire des Colloïdes, Verres et Nanomatériaux, Place Eugène Bataillon, Montpellier, France

f Bruker BioSpin GmbH, NMR division, Karlsruhe, Germany

Abstract

Organosilicas based on adenine (A) and thymine (T) assemblies have been synthesized. A surfactant-free route, based on specific molecular recognition between A and T entities, has been developed. The characterization of the H-bond networks, in both homo- and hetero-assemblies, has been emphasized by using 1H solid state NMR (nuclear magnetic resonance). The latest experimental developments were implemented (i.e. very fast MAS (magic angle spinning) experiments at 750 MHz and 33 kHz), in order to enhance drastically the spectral resolution. Moreover, 1H experiments at 67 kHz in 1.3 mm rotors were performed. Spatial connectivities between protons were established by using 1H–1H DQ (double quantum) MAS experiments, allowing the precise characterization of A/A, T/T and A/T associations.

Graphical abstract: Organosilicas based on purine–pyrimidinebase pair assemblies: a solid state NMR point of view

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Article information

DOI
https://doi.org/10.1039/B714785F
Article type
Paper
Submitted
25 Sep 2007
Accepted
20 Nov 2007
First published
30 Nov 2007

J. Mater. Chem., 2008,18, 392-399

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Organosilicas based on purine–pyrimidinebase pair assemblies: a solid state NMR point of view

G. Arrachart, C. Carcel, J. J. E. Moreau, G. Hartmeyer, B. Alonso, D. Massiot, G. Creff, J. Bantignies, P. Dieudonne, M. W. C. Man, G. Althoff, F. Babonneau and C. Bonhomme, J. Mater. Chem., 2008, 18, 392 DOI: 10.1039/B714785F

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