{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,25]],"date-time":"2025-09-25T16:19:47Z","timestamp":1758817187840},"reference-count":28,"publisher":"AIP Publishing","issue":"2","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2004,1,8]]},"abstract":"<jats:p>The optical pump\u2013terahertz probe spectroscopy was used together with ab initio calculations and molecular dynamics simulations to investigate ultrafast dynamics following electronic excitation of Coumarin 153 and TBNC (2,11,20,29-tetra-tert-butyl-2,3-naphtalocyanine) dyes in polar solvents. By scanning the terahertz waveform for different pump\u2013probe delays this experimental technique allows us to obtain two dimensional spectra directly reflecting the temporal response of the system. A distinct signal was obtained for TBNC in chloroform, 2-propanol, and n-butanol, while no signal was recorded for Coumarin 153 in either of these solvents. We explain the nonequilibrium signal detected in TBNC solutions by the presence of a solid, polycrystalline phase of the dye resulting from irradiating the solution by intense optical pulses.<\/jats:p>","DOI":"10.1063\/1.1633256","type":"journal-article","created":{"date-parts":[[2003,12,24]],"date-time":"2003-12-24T23:00:45Z","timestamp":1072306845000},"page":"912-917","update-policy":"http:\/\/dx.doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":8,"title":["Optical pump\u2013terahertz probe spectroscopy of dyes in solutions: Probing the dynamics of liquid solvent or solid precipitate?"],"prefix":"10.1063","volume":"120","author":[{"given":"Filip","family":"Kadlec","sequence":"first","affiliation":[{"name":"Institute of Physics, Academy of Sciences of the Czech Republic and Center for Complex Molecular Systems and Biomolecules, Na Slovance 2, 18221\u2009Prague 8, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christelle","family":"Kadlec","sequence":"additional","affiliation":[{"name":"Institute of Physics, Academy of Sciences of the Czech Republic and Center for Complex Molecular Systems and Biomolecules, Na Slovance 2, 18221\u2009Prague 8, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Petr","family":"Ku\u017eel","sequence":"additional","affiliation":[{"name":"Institute of Physics, Academy of Sciences of the Czech Republic and Center for Complex Molecular Systems and Biomolecules, Na Slovance 2, 18221\u2009Prague 8, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Petr","family":"Slav\u0131\u0301\u010dek","sequence":"additional","affiliation":[{"name":"J. 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