2024-03-28T12:54:37Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1697262020-12-13T09:03:42Zcom_10261_33com_10261_5col_10261_286
Interrogating ultrafast dynamics of a salicylideneaniline derivative within faujasite zeolites
Alarcos, Noemi
Sánchez, Félix
Douhal, Abderrazzak
Ministerio de Economía, Industria y Competitividad (España)
Junta de Comunidades de Castilla-La Mancha
Femtosecond spectroscopy
Confinement effect
H- and J-aggregates
Intramolecular proton transfer
Host-guest and guest-guest interactions
We 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.
2018-09-14T10:38:39Z
2018-09-14T10:38:39Z
2017
2018-09-14T10:38:39Z
artículo
Chemical Physics Letters 683: 145-153 (2017)
http://hdl.handle.net/10261/169726
10.1016/j.cplett.2017.02.024
http://dx.doi.org/10.13039/501100010198
http://dx.doi.org/10.13039/501100011698
eng
http://dx.doi.org/10.1016/j.cplett.2017.02.024
Sí
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2014-57646-P
closedAccess
Elsevier