2024-03-29T12:54:06Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1697262020-12-13T09:03:42Zcom_10261_33com_10261_5col_10261_286
DIGITAL.CSIC
author
Alarcos, Noemi
author
Sánchez, Félix
author
Douhal, Abderrazzak
funder
Ministerio de Economía, Industria y Competitividad (España)
funder
Junta de Comunidades de Castilla-La Mancha
2018-09-14T10:38:39Z
2018-09-14T10:38:39Z
2017
Chemical Physics Letters 683: 145-153 (2017)
http://hdl.handle.net/10261/169726
10.1016/j.cplett.2017.02.024
http://dx.doi.org/10.13039/501100010198http://dx.doi.org/10.13039/501100011698
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.
eng
closedAccess
Femtosecond spectroscopy
Confinement effect
H- and J-aggregates
Intramolecular proton transfer
Host-guest and guest-guest interactions
Interrogating ultrafast dynamics of a salicylideneaniline derivative within faujasite zeolites
artículo
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URL
https://digital.csic.es/bitstream/10261/169726/1/accesoRestringido.pdf
File
MD5
42637ae8545636bc41605c1740a9a84e
15753
application/pdf
accesoRestringido.pdf