omitir hasta el contenido
Triplet to triplet absorption in organic molecules for use in photochromic devices Ver este material de antemano
CerrarVer este material de antemano
Chequeando…

Triplet to triplet absorption in organic molecules for use in photochromic devices

Autor: John L Kropp; Maurice W Windsor; Air Force Materials Laboratory (U.S.); TRW Systems Group.
Editorial: Wright-Patterson Air Force Base, Ohio : Air Force Materials Laboratory, Air Force Systems Command, United States Air Force, 1968.
Serie: Air Force Materials Laboratory (U.S.).; Technical Report
Edición/Formato:   Print book : Publicación gubernamental nacional : Inglés (eng)
Base de datos:WorldCat
Resumen:
The photochromic properties of several substituted aromatics and heterocyclics have been investigated. The absorption spectra, phosphorescence lifetime T-T absorption spectra and the product of triplet extinction coefficient and triplet formation efficiency, were evaluated for representative compounds. Using these data the photochromic properties of heterocyclics are compared to their hydrocarbon analogs. The values  Leer más
Calificación:

(todavía no calificado) 0 con reseñas - Ser el primero.

Temas
Más materiales como éste

 

Encontrar un ejemplar en la biblioteca

&AllPage.SpinnerRetrieving; Encontrando bibliotecas que tienen este material…

Detalles

Tipo de material: Publicación gubernamental, Publicación gubernamental nacional
Tipo de documento: Libro/Texto
Todos autores / colaboradores: John L Kropp; Maurice W Windsor; Air Force Materials Laboratory (U.S.); TRW Systems Group.
Número OCLC: 428078065
Notas: "August 1968."
AD0675323 (from http://www.dtic.mil).
Research supported by the United States Air Force Materials Laboratory, and performed by TRW Systems Group.
Descripción: vi, 60 pages : illustrations, tables ; 28 cm.
Título de la serie: Air Force Materials Laboratory (U.S.).; Technical Report
Responsabilidad: J.L. Kropp, M.W. Windsor.

Resumen:

The photochromic properties of several substituted aromatics and heterocyclics have been investigated. The absorption spectra, phosphorescence lifetime T-T absorption spectra and the product of triplet extinction coefficient and triplet formation efficiency, were evaluated for representative compounds. Using these data the photochromic properties of heterocyclics are compared to their hydrocarbon analogs. The values of the maximum triplet formation efficiency are lower for heterocyclics than for aromatics. However, broader T-T absorption and more efficient absorption for pumping light suggest that, on balance, heterocyclics are comparable to aromatic hydrocarbons in their effectiveness as photochromic materials. The variation of solvent induces large changes in the photochromic properties of heterocyclics thus providing a useful additional parameter for adjusting their properties. These differences also promise to shed light on the mechanism of radiationless transitions in these compounds. Recommendations for further studies to improve the photochromic properties of heterocyclics are made.

Reseñas

Reseñas contribuidas por usuarios
Recuperando reseñas de GoodReads…
Recuperando reseñas de DOGObooks…

Etiquetas

Ser el primero.
Confirmar este pedido

Ya ha pedido este material. Escoja OK si desea procesar el pedido de todos modos.

Datos enlazados


Primary Entity

<http://www.worldcat.org/oclc/428078065> # Triplet to triplet absorption in organic molecules for use in photochromic devices
    a schema:Book, schema:CreativeWork ;
    library:oclcnum "428078065" ;
    library:placeOfPublication <http://experiment.worldcat.org/entity/work/data/1909990077#Place/wright_patterson_air_force_base_ohio> ; # Wright-Patterson Air Force Base, Ohio
    library:placeOfPublication <http://id.loc.gov/vocabulary/countries/ohu> ;
    schema:about <http://id.worldcat.org/fast/1070397> ; # Polycyclic compounds
    schema:about <http://id.worldcat.org/fast/794740> ; # Absorption spectra
    schema:about <http://id.worldcat.org/fast/815019> ; # Aromatic compounds
    schema:about <http://id.worldcat.org/fast/1061525> ; # Photochromism
    schema:about <http://id.worldcat.org/fast/955736> ; # Heterocyclic compounds
    schema:bookFormat bgn:PrintBook ;
    schema:contributor <http://viaf.org/viaf/159418240> ; # TRW Systems Group.
    schema:contributor <http://experiment.worldcat.org/entity/work/data/1909990077#Person/windsor_maurice_w> ; # Maurice W. Windsor
    schema:contributor <http://viaf.org/viaf/157711596> ; # Air Force Materials Laboratory (U.S.)
    schema:creator <http://experiment.worldcat.org/entity/work/data/1909990077#Person/kropp_john_l> ; # John L. Kropp
    schema:datePublished "1968" ;
    schema:description "The photochromic properties of several substituted aromatics and heterocyclics have been investigated. The absorption spectra, phosphorescence lifetime T-T absorption spectra and the product of triplet extinction coefficient and triplet formation efficiency, were evaluated for representative compounds. Using these data the photochromic properties of heterocyclics are compared to their hydrocarbon analogs. The values of the maximum triplet formation efficiency are lower for heterocyclics than for aromatics. However, broader T-T absorption and more efficient absorption for pumping light suggest that, on balance, heterocyclics are comparable to aromatic hydrocarbons in their effectiveness as photochromic materials. The variation of solvent induces large changes in the photochromic properties of heterocyclics thus providing a useful additional parameter for adjusting their properties. These differences also promise to shed light on the mechanism of radiationless transitions in these compounds. Recommendations for further studies to improve the photochromic properties of heterocyclics are made."@en ;
    schema:exampleOfWork <http://worldcat.org/entity/work/id/1909990077> ;
    schema:genre "National government publication"@en ;
    schema:genre "Government publication"@en ;
    schema:inLanguage "en" ;
    schema:isPartOf <http://experiment.worldcat.org/entity/work/data/1909990077#Series/technical_report> ; # Technical Report ;
    schema:isPartOf <http://experiment.worldcat.org/entity/work/data/1909990077#Series/air_force_materials_laboratory_u_s_technical_report> ; # Air Force Materials Laboratory (U.S.). Technical Report ;
    schema:name "Triplet to triplet absorption in organic molecules for use in photochromic devices"@en ;
    schema:productID "428078065" ;
    schema:publication <http://www.worldcat.org/title/-/oclc/428078065#PublicationEvent/wright_patterson_air_force_base_ohio_air_force_materials_laboratory_air_force_systems_command_united_states_air_force_1968> ;
    schema:publisher <http://experiment.worldcat.org/entity/work/data/1909990077#Agent/air_force_materials_laboratory_air_force_systems_command_united_states_air_force> ; # Air Force Materials Laboratory, Air Force Systems Command, United States Air Force
    wdrs:describedby <http://www.worldcat.org/title/-/oclc/428078065> ;
    .


Related Entities

<http://experiment.worldcat.org/entity/work/data/1909990077#Agent/air_force_materials_laboratory_air_force_systems_command_united_states_air_force> # Air Force Materials Laboratory, Air Force Systems Command, United States Air Force
    a bgn:Agent ;
    schema:name "Air Force Materials Laboratory, Air Force Systems Command, United States Air Force" ;
    .

<http://experiment.worldcat.org/entity/work/data/1909990077#Organization/air_force_materials_laboratory_u_s> # Air Force Materials Laboratory (U.S.).
    a schema:Organization ;
    schema:name "Air Force Materials Laboratory (U.S.)." ;
    .

<http://experiment.worldcat.org/entity/work/data/1909990077#Person/kropp_john_l> # John L. Kropp
    a schema:Person ;
    schema:familyName "Kropp" ;
    schema:givenName "John L." ;
    schema:name "John L. Kropp" ;
    .

<http://experiment.worldcat.org/entity/work/data/1909990077#Person/windsor_maurice_w> # Maurice W. Windsor
    a schema:Person ;
    schema:familyName "Windsor" ;
    schema:givenName "Maurice W." ;
    schema:name "Maurice W. Windsor" ;
    .

<http://experiment.worldcat.org/entity/work/data/1909990077#Place/wright_patterson_air_force_base_ohio> # Wright-Patterson Air Force Base, Ohio
    a schema:Place ;
    schema:name "Wright-Patterson Air Force Base, Ohio" ;
    .

<http://experiment.worldcat.org/entity/work/data/1909990077#Series/air_force_materials_laboratory_u_s_technical_report> # Air Force Materials Laboratory (U.S.). Technical Report ;
    a bgn:PublicationSeries ;
    schema:hasPart <http://www.worldcat.org/oclc/428078065> ; # Triplet to triplet absorption in organic molecules for use in photochromic devices
    schema:name "Air Force Materials Laboratory (U.S.). Technical Report ;" ;
    .

<http://experiment.worldcat.org/entity/work/data/1909990077#Series/technical_report> # Technical Report ;
    a bgn:PublicationSeries ;
    schema:creator <http://experiment.worldcat.org/entity/work/data/1909990077#Organization/air_force_materials_laboratory_u_s> ; # Air Force Materials Laboratory (U.S.).
    schema:hasPart <http://www.worldcat.org/oclc/428078065> ; # Triplet to triplet absorption in organic molecules for use in photochromic devices
    schema:name "Technical Report ;" ;
    .

<http://id.worldcat.org/fast/1061525> # Photochromism
    a schema:Intangible ;
    schema:name "Photochromism"@en ;
    .

<http://id.worldcat.org/fast/1070397> # Polycyclic compounds
    a schema:Intangible ;
    schema:name "Polycyclic compounds"@en ;
    .

<http://id.worldcat.org/fast/794740> # Absorption spectra
    a schema:Intangible ;
    schema:name "Absorption spectra"@en ;
    .

<http://id.worldcat.org/fast/815019> # Aromatic compounds
    a schema:Intangible ;
    schema:name "Aromatic compounds"@en ;
    .

<http://id.worldcat.org/fast/955736> # Heterocyclic compounds
    a schema:Intangible ;
    schema:name "Heterocyclic compounds"@en ;
    .

<http://viaf.org/viaf/157711596> # Air Force Materials Laboratory (U.S.)
    a schema:Organization ;
    schema:name "Air Force Materials Laboratory (U.S.)" ;
    .

<http://viaf.org/viaf/159418240> # TRW Systems Group.
    a schema:Organization ;
    schema:name "TRW Systems Group." ;
    .

<http://www.worldcat.org/title/-/oclc/428078065>
    a genont:InformationResource, genont:ContentTypeGenericResource ;
    schema:about <http://www.worldcat.org/oclc/428078065> ; # Triplet to triplet absorption in organic molecules for use in photochromic devices
    schema:dateModified "2015-08-24" ;
    void:inDataset <http://purl.oclc.org/dataset/WorldCat> ;
    .


Content-negotiable representations

Cerrar ventana

Inicie una sesión con WorldCat 

¿No tienes una cuenta? Puede fácilmente crear una cuenta gratuita.