Steady state and time resolved spectroscopic study of QD-DNA interaction

► Here, we have modified TGA capped CdTe QD by tetra alkylated ammonium groups of PDADMAC i.e. cationic polymer (CP). ► We have studied the specific interaction with DNA intercalated dye with QD using spectroscopy. ► Using FRET, we have measured the distance between QD and interacting dye and correlate with the calculated distance.