M. Vacha et T. Tani, SINGLE-MOLECULE SPECTROSCOPY OF BENZODIPHENANTHROBISANTHENE IN A SHPOLSKII MATRIX, The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, 101(28), 1997, pp. 5027-5030
We present a new system for single-molecule detection at cryogenic tem
peratures, benzodiphenanthrobisanthene in a Shpolskii matrix of n-tetr
adecane. Most of the single-molecule lines are broader than the lifeti
me-limited value of 31.0 MHz, indicating the presence of spectral diff
usion in the crystalline sample. For the detection of the fluorescence
signal, we use a gradient index lens in a back-illumination configura
tion.