Thiocarbonyl transfer reagent chemistry. 2. Diels-Alder addition of 1,1'-thiocarbonylbis(1,2,4-triazole) to dienes. A useful preparation of bicyclic sulfides and related derivatives
作者:Charles Larsen、David N. Harpp
DOI:10.1021/jo01306a034
日期:1980.8
Low-Temperature Emission Spectra of 9-Alkylanthracene Esters:Dimer Photodecomposition and Monomer Pair Interactions in Polymer Hosts
作者:Kimberly Salt、Gary W. Scott
DOI:10.1021/j100091a009
日期:1994.10
Effects due to variation in the alkyl chain length of photodimers of 9-alkylanthracene esters on their photodecomposition efficiencies at 12 K and, by implication, the photoproduct migration as a function of temperature within polymer hosts are investigated. It is shown that dimers with longer alkyl chains have a lower photodecomposition efficiency. The extent of photoproduct migration within the polymer following photodecomposition was also studied as a function of alkyl chain length. This migration and its modulation of the interaction between the separating monomers is shown to affect the emission spectrum. Thus, monomer migration was studied in temperature cycling experiments, It was also found, for the polymer hosts investigated-poly(methyl methacrylate), poly(vinyl chloride), and polystyrene-that these properties are host dependent. This result is probably due to the void space differences that exist among these polymers.
LARSEN CH.; HARPP D. N., J. ORG. CHEM., 1980, 45, NO 18, 3713-3716
作者:LARSEN CH.、 HARPP D. N.
DOI:——
日期:——
EFFICIENT PHOTOLUMINESCENT POLARIZERS, PROCESS FOR FORMING, AND APPLICATION IN DISPLAY DEVICES
申请人:Landqart
公开号:EP1051646B1
公开(公告)日:2004-03-03
Spin-on-Glass Anti-Reflective Coatings for Photolithography
申请人:Baldwin-Hendricks Teresa
公开号:US20090275694A1
公开(公告)日:2009-11-05
The present invention provides a siloxane polymer family comprising siloxane polymer made from: (a) a strongly absorbing compound; (b) at least one silane having good leaving groups; and (c) at least one silane having good leaving groups that is different than (b); wherein the siloxane polymer family exhibits a relationship that is concave/convex or is located in the region enclosed by a concave/convex relationship for the ratio of (a) to (b) to (c) and the siloxane polymer's extinction coefficient k value. These siloxane polymers are preferably used as spin-on glass compositions for films in the microelectronics applications.