Single molecule spectroscopy of Mg-tetrazaporphyrin in xenon matrix. Heavy atom effect

摘要

We report initial results on the observation of single Mg-tetrazaporphyrin molecules in solid xenon. Samples were prepared following the conventional matrix-isolation procedure. Essentially inhomogeneous broadening is characteristic for these spectra. Single molecules, detected by fluorescence microscopy, ave remarkably stable signals. Their fluorescence excitation spectra revealed sharp zero-phonon lines, with most represented linewidths around 50 MHz.