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Nanoporous smectic materials with an adjustable pore interior D. J. Mulder, A. P. H. J. Schenning and D. J. Broer. Introduction

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Projects

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  1. Nanoporoussmectic materials with an adjustable pore interior D. J. Mulder, A. P. H. J. Schenning and D. J. Broer Introduction Nanoporous organic polymer networks are of great interest in variousfields, such as filtration membranes, adsorbents, controlled drug release materials, and nano-reactors. Due to the small pore size, discrimination between molecules and ions based on shape and charge is possible. With the use of the self-organization of smecticliquid crystalline monomers, polymer networks can be prepared with pore sizes of 1 nm and below.1 Overview In this project, a novel route is explored to prepare nanoporoussmectic materials (Fig 1). The interior of these nanoporous materials can be adjusted in post-synthetic steps to tune the materials properties. This is done by the use of smectic LC monomers containing imine bonds. After photopolymerization, imine bonds are hydrolyzed (Scheme 1) and a nanoporous material with a chemically versatile aldehyde interior is obtained. In later steps, for example, secondary amines are obtained. Scheme 1, Schematic representation of the fabrication of nanoporoussmectic materials Projects Currently, the interest of this research lies in the exploration of applications in which this material can be used. Possible projects are the study of adsorption characteristics, and in situ synthesis of, for instance, gold nano-particles. Another interesting topic is the investigation of the possibilities to apply an asymmetric modification through the material to obtain a gradient in the material’s (adsorption) characteristics. Furthermore, a challenging project is the design and synthesis of a complete new smectic membrane containing 4-stilbazole moieties. Techniques used in the project are: Organic synthesis, Photo-polymerizations, POM, TEM, DSC, FTIR, UV-Vis Spectroscopy, WAXS, NMR, and MALDI-ToF. Figure 1, Schematic representation of the fabrication of nanoporoussmectic materials 1. A. P. H. J. Schenning, Y. C. Gonzalez-Lemus, I. K. Shishmanova, and D. J. Broer, Liq. Cryst., 2011, 38, 1627–1639. If you are interested in this project don’t hesitate to contact me. Dirk Jan Mulder (D.J.Mulder@tue.nl, STO 0.39, tel. 040-2478415)Albert Schenning (A.P.H.J.Schenning@tue.nl, STO 0.27, tel. 040-2473264) / ST FunctionalOrganic MaterialsandDevices

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