Preparation, Structure, and Amphoteric Redox Properties of p-Phenylenediamine-Type Dyes Fused with a Chalcogenadiazole Unit
摘要:
4,7-Bis(dialkylamino)benzo[c] [1,2,5]chalcogenadiazoles are a novel class of organic dyes that undergo reversible two-stage one-electron oxidation as well as one-electron reduction. They exhibit absorption maxima in the long-wavelength region, which are assigned as intramolecular charge transfer bands from the phenylenediamine moiety to the electron-accepting heterocycle. Their redox properties as well as molecular and crystal structures are affected by the alkyl substituents on the amino nitrogen and/or by the chalcogen atom (O, S, Se) in the heterocycle.
作者:A.S. Angeloni、V. Ceré、D. Dal Monte、E. Sandri、G. Scapini
DOI:10.1016/0040-4020(72)80137-6
日期:1972.1
derivatives of 5-oximinobenzo-2,1,3-oxadiazole-4-one is reported and their rearrangement to 4,7-dioximino derivatives of benzo-2,1,3-oxadiazole, 2-phenylbenzotriazole and benzotriazole described. Geometricisomerism related to oximino group was investigated. NMR spectra of 4,7-dioximes show the existence in solution of three geometricalisomers, whose configuration was assigned. The derivatives of 5-oximinobenzo-2
Water soluble polymeric dyes and polymeric tandem dyes are provided. The polymeric dyes include a water solvated light harvesting multichromophore having a conjugated segment of aryl or heteroaryl co-monomers including branched non-ionic water soluble groups (WSG) comprising two or more water soluble polymers. In some cases, the branched non-ionic water soluble groups (WSG) of the present disclosure are capable of imparting solubility in water in excess of 50 mg/mL to the multichromophore. The polymeric tandem dyes further include a signaling chromophore covalently linked to the multichromophore in energy-receiving proximity therewith. Also provided are aggregation-resistant labelled specific binding members that include the subject water soluble polymeric dyes. Methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule in which the subject polymeric dyes find use are also provided. Systems and kits for practicing the subject methods are also provided.
[EN] POLYMERIC TANDEM DYES HAVING PENDANT NARROW EMISSION ACCEPTOR<br/>[FR] COLORANTS POLYMÈRES EN TANDEM PRÉSENTANT UN ACCEPTEUR D'ÉMISSION ÉTROIT LATÉRAL
申请人:BECTON DICKINSON CO
公开号:WO2020033173A1
公开(公告)日:2020-02-13
Polymeric tandem dyes are provided. The polymeric tandem dyes include a narrow emission fluorophore configured as a pendant acceptor in energy-receiving proximity to a donor water solvated light harvesting multichromophore. The narrow emission acceptor fluorophores of the present disclosure are capable of providing polymeric tandem dyes having a variety of narrow emission spectrums suitable for multiplexing. Also provided are compositions for multicolor fluorescent signal generation that include two or more polymeric tandem dyes. Methods of evaluating a sample for the presence of a target analyte and methods of labelling a target molecule in which the subject polymeric dyes find use are also provided. Systems and kits for practicing the subject methods are also provided.