Triphenylene based discotic liquid crystals as self-assembled monolayers

摘要: A series of ω-thiol-substituted 2,3,6,7,10,11-hexaalkoxytriphenylenes was synthesised for the purpose forming self-assembled monolayers (SAMs) on gold in which self-organizing, discogenic headgroups have a known orientation. In principle, these can be oriented either with their short axes perpendicular (disc “face-on”) parallel “edge-on”) to surface, depending number and position tethering points. To obtain “face-on” orientation trithiol (three points attachment) synthesized an “edge-on” both monothiol ortho-dithiol derivatives (one or two were made. Within SAMs it expected that discogen would self-organize into hexagonal array those discogens columns run surface. The kinetics formation structures characterized by contact angle measuremen...