OPTICAL SENSORS BASED ON HYBRID APTAMER/CONJUGATED POLYMER COMPLEXES

摘要

An optical sensor for detecting a target comprising a single­stranded aptamer complementary to said target, and a water-soluble cationic polythiophene derivative of the following formula: wherein "n" is an integer ranging from 6 to 100, is disclosed. The optical sensor allows for the detection of targets selected from the group consisting of potassium ions, small organic molecules, amino acids, proteins, whole cells and nucleotides. The detection is based on the formation of hybrid anionic aptamer/cationic polythiophene complexes.