Photomodulation of macroscopic properties

We review macroscopic properties of materials that can be modulated by light through switching between the two stable states of a photochromic system. In special cases, the photochromic compound is the only component of the material, but in most cases it is either embedded or covalently linked to a...

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Autores principales: Bossi, Mariano Luis, Aramendía, Pedro Francisco
Publicado: 2011
Materias:
Liquid crystals
Photochromism
Photomodulation
Photoswitching
Polymers
Dielectrical properties
Light dispersion
Liquid crystalline phase
Macroscopic properties
Mechanical deformation
Microscopic surface
Molecular levels
Photo modulation
Photochromic compound
Photochromic systems
Polarizabilities
Rubbery polymers
Single molecule level
Stable phase
Stable state
Interfaces (materials)
Light transmission
Materials properties
Mechanical permeability
Polarization
Refractive index
Surface properties
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13895567_v12_n3_p154_Bossi
http://hdl.handle.net/20.500.12110/paper_13895567_v12_n3_p154_Bossi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_13895567_v12_n3_p154_Bossi
record_format dspace
spelling paper:paper_13895567_v12_n3_p154_Bossi2023-06-08T16:13:09Z Photomodulation of macroscopic properties Bossi, Mariano Luis Aramendía, Pedro Francisco Liquid crystals Photochromism Photomodulation Photoswitching Polymers Dielectrical properties Light dispersion Liquid crystalline phase Macroscopic properties Mechanical deformation Microscopic surface Molecular levels Photo modulation Photochromic compound Photochromic systems Photoswitching Polarizabilities Rubbery polymers Single molecule level Stable phase Stable state Interfaces (materials) Light transmission Liquid crystals Materials properties Mechanical permeability Polarization Polymers Refractive index Surface properties Photochromism We review macroscopic properties of materials that can be modulated by light through switching between the two stable states of a photochromic system. In special cases, the photochromic compound is the only component of the material, but in most cases it is either embedded or covalently linked to a suitable host, which is normally a liquid crystalline phase, a glassy or a rubbery polymer, or an interface. We analyze examples that illustrate changes in refractive index, transmission of polarized light, reflectivity, light dispersion, polarization, charge transport capability, dielectrical properties, stable phase, microscopic surface relief in large areas, hydrophobicity of the surface, permeability, and even bulk mechanical deformations. The basis of such changes at a molecular level is associated with a difference in the shape, dipole moment, polarizability, or electronic features of the photochromic species, and their different interaction with the environment. In some cases, studies were performed at the single molecule level. Each effect is discussed stressing the favorable features of the particular photochromic compounds to induce the changes and its interaction with the environment that make it suitable for the appointed application. © 2011 Elsevier B.V. Fil:Bossi, M.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Aramendía, P.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13895567_v12_n3_p154_Bossi http://hdl.handle.net/20.500.12110/paper_13895567_v12_n3_p154_Bossi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Liquid crystals
Photochromism
Photomodulation
Photoswitching
Polymers
Dielectrical properties
Light dispersion
Liquid crystalline phase
Macroscopic properties
Mechanical deformation
Microscopic surface
Molecular levels
Photo modulation
Photochromic compound
Photochromic systems
Photoswitching
Polarizabilities
Rubbery polymers
Single molecule level
Stable phase
Stable state
Interfaces (materials)
Light transmission
Liquid crystals
Materials properties
Mechanical permeability
Polarization
Polymers
Refractive index
Surface properties
Photochromism
spellingShingle Liquid crystals
Photochromism
Photomodulation
Photoswitching
Polymers
Dielectrical properties
Light dispersion
Liquid crystalline phase
Macroscopic properties
Mechanical deformation
Microscopic surface
Molecular levels
Photo modulation
Photochromic compound
Photochromic systems
Photoswitching
Polarizabilities
Rubbery polymers
Single molecule level
Stable phase
Stable state
Interfaces (materials)
Light transmission
Liquid crystals
Materials properties
Mechanical permeability
Polarization
Polymers
Refractive index
Surface properties
Photochromism
Bossi, Mariano Luis
Aramendía, Pedro Francisco
Photomodulation of macroscopic properties
topic_facet Liquid crystals
Photochromism
Photomodulation
Photoswitching
Polymers
Dielectrical properties
Light dispersion
Liquid crystalline phase
Macroscopic properties
Mechanical deformation
Microscopic surface
Molecular levels
Photo modulation
Photochromic compound
Photochromic systems
Photoswitching
Polarizabilities
Rubbery polymers
Single molecule level
Stable phase
Stable state
Interfaces (materials)
Light transmission
Liquid crystals
Materials properties
Mechanical permeability
Polarization
Polymers
Refractive index
Surface properties
Photochromism
description We review macroscopic properties of materials that can be modulated by light through switching between the two stable states of a photochromic system. In special cases, the photochromic compound is the only component of the material, but in most cases it is either embedded or covalently linked to a suitable host, which is normally a liquid crystalline phase, a glassy or a rubbery polymer, or an interface. We analyze examples that illustrate changes in refractive index, transmission of polarized light, reflectivity, light dispersion, polarization, charge transport capability, dielectrical properties, stable phase, microscopic surface relief in large areas, hydrophobicity of the surface, permeability, and even bulk mechanical deformations. The basis of such changes at a molecular level is associated with a difference in the shape, dipole moment, polarizability, or electronic features of the photochromic species, and their different interaction with the environment. In some cases, studies were performed at the single molecule level. Each effect is discussed stressing the favorable features of the particular photochromic compounds to induce the changes and its interaction with the environment that make it suitable for the appointed application. © 2011 Elsevier B.V.
author Bossi, Mariano Luis
Aramendía, Pedro Francisco
author_facet Bossi, Mariano Luis
Aramendía, Pedro Francisco
author_sort Bossi, Mariano Luis
title Photomodulation of macroscopic properties
title_short Photomodulation of macroscopic properties
title_full Photomodulation of macroscopic properties
title_fullStr Photomodulation of macroscopic properties
title_full_unstemmed Photomodulation of macroscopic properties
title_sort photomodulation of macroscopic properties
publishDate 2011
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13895567_v12_n3_p154_Bossi
http://hdl.handle.net/20.500.12110/paper_13895567_v12_n3_p154_Bossi
work_keys_str_mv AT bossimarianoluis photomodulationofmacroscopicproperties
AT aramendiapedrofrancisco photomodulationofmacroscopicproperties
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