Orientation-controlled monolayer assembly of zeolite crystals on glass using terephthaldicarboxaldehyde as a covalent linker

Glass plates and pseudo hexagonal prismatic ZSM-5 crystals tethered with 3- aminopropylsilyl (APS) groups, respectively, were prepared by treating them with 3-aminopropyltriethoxysilane. Subsequent treatment of the APS-tetheri ng glass plates with terephthaldicarboxaldehyde led to facile assembly of b enzaldehyde (BA) units over the glass plates via imine (-CH=N-) linkages. W hen the BA-tethering glass plates and the APS-tethering zeolite crystals we re allowed to contact in boiling toluene, the ZSM-5 crystals strongly adher ed onto the glass plates in the form of closely packed monolayers with perf ect one-dimensional orientation. (C) 2000 Elsevier Science Ltd. All rights reserved.