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Interrogating ultrafast dynamics of a salicylideneaniline derivative within faujasite zeolites

AuthorsAlarcos, Noemi; Sánchez, Félix ; Douhal, Abderrazzak
KeywordsFemtosecond spectroscopy
Confinement effect
H- and J-aggregates
Intramolecular proton transfer
Host-guest and guest-guest interactions
Issue Date2017
CitationChemical Physics Letters 683: 145-153 (2017)
AbstractWe report on femtosecond (fs) studies of (E)-2-(2-hydroxybenzyliden) amino-4-nitrophenol (HBA-4NP) in dichloromethane (DCM) and triacetin (TAC) solutions, and within NaX and NaY zeolites. In solution, an ultrafast (≤80 fs) excited-state intramolecular proton-transfer (ESIPT) reaction produces a keto (K) tautomer, which undergoes a rotational process in ∼4 (DCM) and ∼7 ps (TAC) toward the formation of non-emitting structures. Within NaX and NaY, where monomers and aggregates are formed, host-guest and guest-guest interactions play an important role in the ultrafast behaviour of these complexes. These results clearly reflect how nanoconfinement and zeolite composition affect the encapsulated dye photodynamics.
Publisher version (URL)http://dx.doi.org/10.1016/j.cplett.2017.02.024
Identifiersdoi: 10.1016/j.cplett.2017.02.024
issn: 0009-2614
Appears in Collections:(IQOG) Artículos
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