Photoluminescence of supramolecular oligothiophene assemblies

The photoluminescence of supramolecular assemblies of two lengthy oligothio phenes having eleven and seventeen repeat units that are end-substituted wi th third generation poly(benzyl ether) dendritic wedges, G3-T11-G3 and G3-T 17-G3 respectively, is presented. Recent thermochromism studies revealed th at these novel materials form nanoscale aggregates in solution. Variable te mperature photoluminescence measurements confirm the complete transformatio n of a molecularly dissolved phase into an aggregated phase within a rather narrow temperature regime.