- Azobenzene-based Organic Dyes, Preparation Method Thereof, and Dye-sensitized Solar Cells Comprising the Same
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An organic dye based on azobenzene (1) represented by chemical formula (azobenzene), a method for preparing the same, and a dye-sensitized solar cell using the same are D, π-A, (1), and 1 (D) in the formula (donor): (R). 1 ) (R)2 ) N - Where it is R. 1 And R2 Is independently hydrogen, a halogen element, a substituted or unsubstituted C1?C20 alkyl, a substituted or unsubstituted C1?C20 alkoxy, a substituted or unsubstituted C4?C10 aryl, or a substituted or unsubstituted C3?C10 heteroaryl. Π (π spacer) is - π1 -(Π)2 )n -Π-π. 1 is possible. A photoisomerization group represented by the formula, wherein the R is the same as defined above. 3 And R4 Is independently hydrogen, a halogen element, a substituted or unsubstituted C1?C4 alkyl, or a substituted or unsubstituted C1?C4 alkoxy. Π π2 is possible. , Where n is R. 5 Is hydrogen, a halogen element, a substituted or unsubstituted C1?C4 alkyl, or a substituted or unsubstituted C1?C4 alkoxy. Here n is a natural number of 0 or 1; FIGS. A (acceptor) Is an anchoring group (Anchoring group); FIGS. The substituent is at least one selected from the group consisting of halogen elements, hydroxy, C1?C3 alkyl, and C1?C3 alkoxy. The hetero atom is at least one selected from the group consisting N, O and S.
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Paragraph 0141-0142; 0152-0157
(2021/10/05)
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- Copper-free 'click' modification of dna via nitrile oxide-norbornene 1,3-dipolar cycloaddition
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Nitrile oxides react smoothly and rapidly with norbornene-modified DNA in a copper-free click reaction. The reaction allows high density functionalization of oligodeoxyribonucleotides (ODNs) with a large variety of molecules directly on solid supports and
- Gutsmiedl, Katrin,Wirges, Christian T.,Ehmke, Veronika,Carell, Thomas
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supporting information; experimental part
p. 2405 - 2408
(2009/10/18)
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- Activation of the aryl hydrocarbon receptor by methyl yellow and related congeners: structure-activity relationships in halogenated derivatives.
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The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that mediates the biological action of many environmental compounds. Methyl yellow (4-dimethylaminoazobenzene; MY) is a principal azo-dye, and structurally related compounds were subjected to analysis of structure-activity relationships as AhR ligands by using a yeast AhR signaling assay. The effects of halogen-substitution among 23 halogenated MYs on the AhR ligand activity can be summarized as follows: enhancement by halogen-substitution at the ortho-position (2'- and 6'-position), and reduction by substitution at the para-position (4'-position). The greatest enhancement of the ligand activity was observed in 2',6'-dichlorinated MY (13.5-fold of MY), and its AhR ligand activity was very close to that of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in the present assay system. In the study of compounds structurally related to MY, benzanilide (BA) showed almost the same AhR ligand activity as azobenzene and trans-stilbene. Furthermore, 4'-chlorobenzanilide, in which the length of the molecule is similar to that of MY, enhanced the AhR ligand activity by ortho(2')-chlorine-substitution, and the AhR ligand activity of 2',4'-dichlorobenzanilide was similar to that of 2'-chloro-MY. These results suggest that the amide bond is equivalent to the -N=N- or -CH=CH- double bond for recognition as the ligand by AhR in 1,2-diphenyl-1,2-ene derivatives.
- Kato, Taka-aki,Matsuda, Tomonari,Matsui, Saburo,Mizutani, Takaharu,Saeki, Ken-ichi
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p. 466 - 471
(2007/10/03)
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