[EN] IR DYES AND LASER MARKABLE ARTICLES COMPRISING SUCH IR DYES<br/>[FR] COLORANTS IR ET ARTICLES POUVANT ÊTRE MARQUÉS AU LASER COMPRENANT DE TELS COLORANTS IR
申请人:AGFA GEVAERT
公开号:WO2015165854A1
公开(公告)日:2015-11-05
Infrared dyes having an infrared absorption maximum above 1130 nm are disclosed which have minor colouration in the visual spectrum. The infrared dyes are especially useful for producing multicolour laser marked security documents having reduced background coloration and enhanced colour gamut.
Optically-Detectable Enzyme Substrates and Their Method of Use
申请人:Life Technologies Corporation
公开号:US20160139135A1
公开(公告)日:2016-05-19
The present invention relates to compounds that are substrates for an enzyme, and upon reaction with the enzyme provide a detectable response, such as an optically detectable response. In particular, the compounds have utility in detecting the presence of a β-lactamase in a sample. In addition to the compounds, methods are disclosed for analyzing a sample for the presence of a β-lactmase, for example, as an indicator of expression of a nucleic acid sequence including a sequence coding for a β-lactmase. Kits are disclosed that include the disclosed compounds and additional components, for example, cells, antibodies, a β-lactmase or instructions for using the components in an assay.
NbCl<sub>5</sub>
-Promoted Synthesis of Fluorescein Dye Derivatives: Spectroscopic and Spectrometric Characterization and Their Application in Dye-Sensitized Solar Cells
作者:Bruno Henrique Sacoman Torquato da Silva、Bruna Andressa Bregadiolli、Carlos Frederico de Oliveira Graeff、Luiz Carlos da Silva-Filho
DOI:10.1002/cplu.201600530
日期:2017.2
Fluorescein has several applications owing to its properties, such as high molar absorptivity, high fluorescence quantum yield, high photostability, and wavelengths of absorption and emission in the visible region. The syntheses of fluorescein derivatives between phenol and anhydride derivatives by using NbCl5 as a Lewis acid is described. The products have high yields and short reaction times are
A thermochromic pigment composition including compounds of formula (I):
in which: X represents CHR
2
, O, OCO or CH═CH; Y represents O, COO, or OCOO; R
1
represents H or (CH
2
)
p
CH
3
; R
2
represents phenyl or H; m=12-18; n=0-14; p=12-18; and on the condition that, if n=0, X represents CHR
2
or CH═CH.
The thermochromic pigment compositions having compounds of formula (I), include thermochromic pigment microcapsules. The thermochromic pigment capsules are useable for thermochromic pigment compositions in ink which may be used writing instruments.