跳到内容
Triplet to triplet absorption in organic molecules for use in photochromic devices 预览资料
关闭预览资料
正在查...

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

著者: John L Kropp; Maurice W Windsor; Air Force Materials Laboratory (U.S.); TRW Systems Group.
出版商: Wright-Patterson Air Force Base, Ohio : Air Force Materials Laboratory, Air Force Systems Command, United States Air Force, 1968.
丛书: Air Force Materials Laboratory (U.S.).; Technical Report
版本/格式:   图书 : 国家级的政府刊物 : 英语
数据库:WorldCat
提要:
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  再读一些...
评估:

(尚未评估) 0 附有评论 - 争取成为第一个。

主题
更多类似这样的

 

在图书馆查找

&AllPage.SpinnerRetrieving; 正在查找有这资料的图书馆...

详细书目

材料类型: 政府刊物, 国家级的政府刊物
文件类型:
所有的著者/提供者: John L Kropp; Maurice W Windsor; Air Force Materials Laboratory (U.S.); TRW Systems Group.
OCLC号码: 428078065
注意: "August 1968."
AD0675323 (from http://www.dtic.mil).
Research supported by the United States Air Force Materials Laboratory, and performed by TRW Systems Group.
描述: vi, 60 p. : ill., tables ; 28 cm.
丛书名: Air Force Materials Laboratory (U.S.).; Technical Report
责任: J. L. Kropp, M. W. Windsor.

摘要:

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.

评论

用户提供的评论
正在获取GoodReads评论...
正在检索DOGObooks的评论

标签

争取是第一个!
确认申请

你可能已经申请过这份资料。如果还是想申请,请选确认。

链接数据


<http://www.worldcat.org/oclc/428078065>
library:oclcnum"428078065"
library:placeOfPublication
library:placeOfPublication
owl:sameAs<info:oclcnum/428078065>
rdf:typeschema:Book
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:contributor
schema:contributor
schema:contributor
schema:creator
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."
schema:exampleOfWork<http://worldcat.org/entity/work/id/1909990077>
schema:inLanguage"en"
schema:name"Triplet to triplet absorption in organic molecules for use in photochromic devices"
schema:numberOfPages"60"
schema:publisher
schema:url

Content-negotiable representations

关闭窗口

请登入WorldCat 

没有张号吗?很容易就可以 建立免费的账号.