title: Pulse train fluorescence technique for measuring triplet state dynamics.
abstract: We report on a method to study the dynamics of triplet formation based on the fluorescence signal produced by a pulse train. Basically, the pulse train acts as sequential pump-probe pulses that precisely map the excited-state dynamics in the long time scale. This allows characterizing those processes that affect the population evolution of the first excited singlet state, whose decay gives rise to the fluorescence. The technique was proven to be valuable to measure parameters of triplet formation in organic molecules. Additionally, this single beam technique has the advantages of simplicity, low noise and background-free signal detection.
authors.affiliation: Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP, Brasil. deboni@ifsc.usp.br
authors.forename: Leonardo
authors.initials: L
authors.lastname: De Boni
authors.forename: Paulo L
authors.initials: PL
authors.lastname: Franzen
authors.forename: Pablo J
authors.initials: PJ
authors.lastname: Gonçalves
authors.forename: Iouri E
authors.initials: IE
authors.lastname: Borissevitch
authors.forename: Lino
authors.initials: L
authors.lastname: Misoguti
authors.forename: Cleber R
authors.initials: CR
authors.lastname: Mendonça
authors.forename: Sergio C
authors.initials: SC
authors.lastname: Zilio
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D004867:Equipment Design; D005453:Fluorescence; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D007834:Lasers; D016011:Normal Distribution; D055095:Optics and Photonics; D009991:Oscillometry / Q000379:methods; D011166:Porphyrins / Q000737:chemistry*; D012235:Rhodamines / Q000737:chemistry; D013053:Spectrophotometry / Q000379:methods; D013997:Time Factors
chemical_list: D011166:Porphyrins; D012235:Rhodamines; C029773:rhodamine B