Thermal and photochemical properties of 4′-hydroxyflavylium in water-ionic liquid biphasic systems

Damián Fernandez; A. Jorge Parola; Luís C. Branco; Carlos A. M. Afonso; Fernando Pina

doi:10.1016/j.jphotochem.2004.05.022

Thermal and photochemical properties of 4′-hydroxyflavylium in water-ionic liquid biphasic systems

Damián Fernandez, A. Jorge Parola, Luís C. Branco, Carlos A. M. Afonso, Fernando Pina

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

The multistate/multifunctional properties of 4′-hydroxyflavylium in a water/1-n-butyl-3-methyl-imidazolium hexafluorophosphate ([bmim][PF₆]) biphasic system are described. The kinetics and thermodynamics of this flavylium salt have been fully characterised in aqueous solutions and compared to those obtained in [bmim][PF₆]. The trans-chalcone is thermally more stable in the ionic liquid but shows efficient photoisomerisation to the cis-chalcone, allowing to define write - read - erase cycles in this biphasic system.

Original language	English
Pages (from-to)	185-189
Number of pages	5
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	168
Issue number	3
DOIs	https://doi.org/10.1016/j.jphotochem.2004.05.022
Publication status	Published - 1 Dec 2004

Keywords

Flavylium salts
Ionic liquids
Multistate systems
Photochromic systems

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10.1016/j.jphotochem.2004.05.022Licence: CC BY-NC-ND

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title = "Thermal and photochemical properties of 4′-hydroxyflavylium in water-ionic liquid biphasic systems",

abstract = "The multistate/multifunctional properties of 4′-hydroxyflavylium in a water/1-n-butyl-3-methyl-imidazolium hexafluorophosphate ([bmim][PF6]) biphasic system are described. The kinetics and thermodynamics of this flavylium salt have been fully characterised in aqueous solutions and compared to those obtained in [bmim][PF6]. The trans-chalcone is thermally more stable in the ionic liquid but shows efficient photoisomerisation to the cis-chalcone, allowing to define write - read - erase cycles in this biphasic system.",

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T1 - Thermal and photochemical properties of 4′-hydroxyflavylium in water-ionic liquid biphasic systems

AU - Fernandez, Damián

AU - Parola, A. Jorge

AU - Branco, Luís C.

AU - Afonso, Carlos A. M.

AU - Pina, Fernando

PY - 2004/12/1

Y1 - 2004/12/1

N2 - The multistate/multifunctional properties of 4′-hydroxyflavylium in a water/1-n-butyl-3-methyl-imidazolium hexafluorophosphate ([bmim][PF6]) biphasic system are described. The kinetics and thermodynamics of this flavylium salt have been fully characterised in aqueous solutions and compared to those obtained in [bmim][PF6]. The trans-chalcone is thermally more stable in the ionic liquid but shows efficient photoisomerisation to the cis-chalcone, allowing to define write - read - erase cycles in this biphasic system.

AB - The multistate/multifunctional properties of 4′-hydroxyflavylium in a water/1-n-butyl-3-methyl-imidazolium hexafluorophosphate ([bmim][PF6]) biphasic system are described. The kinetics and thermodynamics of this flavylium salt have been fully characterised in aqueous solutions and compared to those obtained in [bmim][PF6]. The trans-chalcone is thermally more stable in the ionic liquid but shows efficient photoisomerisation to the cis-chalcone, allowing to define write - read - erase cycles in this biphasic system.

KW - Flavylium salts

KW - Ionic liquids

KW - Multistate systems

KW - Photochromic systems

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M3 - Article

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SN - 1010-6030

VL - 168

SP - 185

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JO - Journal of Photochemistry and Photobiology A: Chemistry

JF - Journal of Photochemistry and Photobiology A: Chemistry

IS - 3

ER -

Thermal and photochemical properties of 4′-hydroxyflavylium in water-ionic liquid biphasic systems

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