期刊
ORGANIC LETTERS
卷 14, 期 11, 页码 2670-2673出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol300674v
关键词
-
资金
- Foundation for Polish Science [TEAM-2009-4/3]
A synthetic approach to the structurally diverse family of pi-expanded diketopyrrolopyrroles is described. A three-step strategy appears to be very general and starts with the preparation of diketopyrrolopyrroles followed by N-alkylation with bromoacetaldehyde diethyl acetal and electrophilic aromatic substitution. The final reaction regioselectively furnishes S-shaped, violet and blue functional dyes of previously unknown structure. New dyes possess sharp absorption and emission peaks, with very high molar absorption coefficients and reasonable fluorescence quantum yields. As a proof of principle, cell uptake of selected dye was demonstrated.
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