Concentration quenching in fluorescent acene solutions

摘要: Measurements on the concentration dependence of fluorescence intensity dilute solutions various acenes in n-hexane at 25°c show that quenching for benzene as a solute can be explained by simple collisional quenching. In naphthalene and anthracene proceeds via an unstable excited complex resulting from interaction non-excited molecule. The remarkable shape curve is attributed to contribution total intensity. average life-time τ fluorescent electronic state, calculated measurements, amounts about 2×10−6 sec 5×10−7 naphthalene.