Towards more sustainable synthesis of diketopyrrolopyrroles
作者:Flavia Pop、Joshua Humphreys、Jesper Schwarz、Liam Brown、Ashmiani van den Berg、David B. Amabilino
DOI:10.1039/c9nj01074b
日期:——
The alkylation of 1,4-diketo-3,6-arylpyrrolo[3,4-c]pyrroles (ArDPP) is one of the most important steps in the synthesis of soluble materials based on these molecules and the polymers derived from them (that are employed widely in putative organic solar cells). Here we report an improvement in their method of synthesis replacing habitual solvent and base. Compared with more usual conditions, we employed
1,4-二酮-3,6-芳基吡咯并[3,4- c ]吡咯(ArDPP)的烷基化是基于这些分子和衍生自它们的聚合物合成可溶性材料的最重要步骤之一被广泛用于推定的有机太阳能电池中。在这里,我们报告了他们替代常规溶剂和碱的合成方法的改进。与更常用的条件相比,我们使用乙腈作为溶剂可提高产率或类似率,并且毒性和危险性废物更少,反应时间和温度更低,并且可以回收未反应的原料。与二甲基甲酰胺和N不同-甲基吡咯烷酮,是最常用的溶剂。我们的反应条件已在三种不同的ArDPP(Ar =噻吩,苯基和4-甲氧基苯基)上用各种直链和支链烷基试剂进行了测试。与已发表的报告相比,结果显示了相似且改进的结果,同时在许多情况下减少了反应的浪费和危害,并简化了产物的纯化。总体而言,该方法对环境的影响较小,具有更高的成本效益,并且不需要使用干燥溶剂或惰性气氛。
Dithioketo-pyrrolo-pyrrole, Verfahren zu deren Herstellung und Verwendung
申请人:CIBA-GEIGY AG
公开号:EP0187620A2
公开(公告)日:1986-07-16
Verbindungen der Formel (1)
worin A und B gleiche oder voneinander verschiedene Alkyl-, Aralkyl- oder Cycloalkylgruppen, carbocyclische oder heterocyclische aromatische Reste, R, und R2 Wasserstoffatome oder nicht wasserlöslichmachende Substituenten bedeuten, eignen sich insbesondere als photoleitfähige Substanzen.
式(1)中 A 和 B 是相同或不同的烷基、芳基或环烷基、碳环基或杂环芳香基,R 和 R2 是氢原子或非水溶性取代基的化合物特别适合用作光导物质。
Preparation and Characterizations of Solvent Soluble Dyes Based on Dimerized Diketo-pyrrolo-pyrrole Pigment
Near-Infrared Dyes and Fluorophores Based on Diketopyrrolopyrroles
作者:Georg M. Fischer、Andreas P. Ehlers、Andreas Zumbusch、Ewald Daltrozzo
DOI:10.1002/anie.200604763
日期:2007.5.11
Rational designs of multifunctional polymers
作者:Wai Kin Chan、Yongming Chen、Zhonghua Peng、Luping Yu
DOI:10.1021/ja00078a012
日期:1993.12
To manifest photorefractive effects, a polymer must possess a photocharge generator, a charge transporter, a charge trapping center, and a nonlinear optical chromophore. We utilized the Stille coupling reaction to synthesize a novel type of multifunctional polymer that contains a conjugated backbone and a second-order NLO chromophore. The expectation that the polymers will possess photorefractivity is the design idea behind the structure of the polymers. Because the conjugated backbone absorbs photons in the visible region and is photoconductive, it is expected to play the triple role of charge generator, charge transporter, and backbone. Thus, the four functionalities necessary to manifest the PR effect will exist simultaneously in a single polymer. The second harmonic generation and the photoconductivity measurements revealed that the polymers are nonlinear-optically active and photoconductive. Two beam-coupling experiments clearly indicated asymmetric optical energy exchange, which is an unambiguous demonstration of photorefractivity.