Low-temperature spectroscopy of organic molecules in solid matrices: from the Shpol'skii effect to laser luminescent spectromicroscopy for all effectively emitting single molecules

Moments distributions of single dye molecule spectra in a low-temperature polymer: Analysis of system ergodicity

“…A significant amount of new information about the internal dynamics of solids can be obtained from the laser selective optical electronic-vibrational spectra of impurity centers (molecules, ions) embedded as spectral probes into a medium (matrix) transparent in the selected spectral range. The laser selective spectroscopy of impurity centers in solids is especially informative at cryogenic temperatures, when zero-phonon lines (ZPL) are reachable for observation (see [1] and references therein).…”

“…A significant amount of new information about the internal dynamics of solids can be obtained from the laser selective optical electronic-vibrational spectra of impurity centers (molecules, ions) embedded as spectral probes into a medium (matrix) transparent in the selected spectral range. The laser selective spectroscopy of impurity centers in solids is especially informative at cryogenic temperatures, when zero-phonon lines (ZPL) are reachable for observation (see [1] and references therein).The possibilities of the methods of selective laser spectroscopy (persistent spectral hole burning and laser fluorescence line narrowing) are significantly limited because they provide data averaged over a large ensemble of impurity centers. The method of Single-molecule spectroscopy (SMS) completely eliminates this drawback.…”

“…Single-molecule spectroscopy (SM), embedded as a spectral probe into a solid matrix, is a powerful tool for obtaining information about low-temperature dynamic processes in the local environment of these molecules [2]. In particular, SMS allows one to directly investigate the interaction of the electron transition impurity center with elementary excitations of a matrix of tunnel type -tunneling two-level systems (TLSs), (see [1][2][3] and references there).In the present work we performed the analysis of the long-term temporal dynamics of the spectrum of a single chromophore molecules in the polymer matrix at cryogenic temperature, in order to clarify the applicability of the basic assumption of theories describing the spectral dynamics of such systems. …”

Spectroscopy of single organic dye-molecules and semiconductor quantum dots: basic aspects and applications in nanoscopy

“…The developed techniques allow us to perform qualitatively new type of measurements in the field of spectroscopy of the impurity center which is registration of individual spectra and the spatial coordinates of effectively emitting centers in the macroscopic volume of the sample doped with fluorescent probe molecules [3,4,13,14]. In particular, we have been carried out experiments on the far-field visualizing of local structural features in solid films (defects, cracks) with characteristic dimensions of a few nanometers.…”

Cooperative effects and slow dynamics of fluorescence intensity from quantum emitters in a dielectric

“…It was shown to be so by calculations of the fluorescence spectra both analytically and numerically. We assume, that the discussed effects could be observed experimentally by photon echo technique [5][6][7] or various methods of laser site-selective spectroscopy at low temperatures [8].…”