A photoelectrochemical aptasensor for mucin 1 based on DNA/aptamer linking of quantum dots and TiO2 nanotube arrays

Herein, a novel strategy for the construction of a photoelectrochemical aptasensor for tumor marker mucin 1 (MUC1) was presented, which was based on the effective photoelectron transfer from CdTe quantum dots (QDs) to TiO₂ nanotube arrays (TiO₂ NTs) through DNA chains.