The sensitive dye 4-(4-hexyl-5-(4-vinyl-phenyl)thiophen-2-yl)-7-(4-hexylthiophen-2-yl)-benzo[c][1,2,5]thiadiazole (TBTS) is introduced as an efficient comonomer for controlled radical polymerization, especially nitroxide-mediated polymerization (NMP). Late experiments show the solvatochromic behavior of TBTS and a change of emission spectra of TBTS-containing copolymers at different conditions. Its solvatochromic behavior makes this particular dye interesting as reporter for polymer phase transitions. The used amount of dye varies from 1.0 to 2.5 mol%. Since the polymer phase transition depends on different factors like temperature, pH, solvents or the presence of specific compounds, a wide range of applications for responsive polymers is possible, e.g. ionic strength sensors and drug delivery.

TBTS as general reporter for polymer phase transitions

245th National Meeting (2013)

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