Preparation of conjugated polymers-based fluorescence probes

4 Abstract The water soluble polythiophe-based polyelectrolytes, namely poly{3-[6- (triethylphosphonium) hexyl]-thiophene-2,5-diyl bromide} bearing the same ionic pendant groups but different in polymer main chain regioregularity 62 and 94% and molecular weight, respectively have been tested in order to study them as possible luminescentchemo-sensors.Thefluorescentquenchingwithmetalsions(Fe2+ ,Ni2+ ,Zn2+ , Cd2+ , Cu2+ , Cs+ , Co2+ and Ag+ ) has been studied in water as a detailed survey. In order to continueandextendthestudyofvariousconjugatedpolymersasalternativeluminescent sensors, luminescence quenching of poly(1-phenyl-1-hexyne) compound has been tested with nitrobeneze as a quenching agent. Final structure modification of model compound and preparation the phosphonium or ammonium based conjugated polyelectrolyte and consequent interactionwithmetal ions are planned for the future. Bachelor thesis was done at Department of Physical and Macromolecular Chemistry at Faculty of Science at Charles University with the support of The Czech ScienceFoundation17-05318S