Controlled Synthesis of Poly(3-hexylthiophene) in Continuous Flow
News Sep 26, 2013
There is an increasing demand for organic semiconducting materials with the emergence of organic electronic devices. In particular, large-area devices such as organic thin-film photovoltaics will require significant quantities of materials for device optimization, lifetime testing and commercialization. Sourcing large quantities of materials required for the optimization of large area devices is costly and often impossible to achieve. Continuous-flow synthesis enables straight-forward scale-up of materials compared to conventional batch reactions. In this study, poly(3-hexylthiophene), P3HT, was synthesized in a bench-top continuous-flow reactor. Precise control of the molecular weight was demonstrated for the first time in flow for conjugated polymers by accurate addition of catalyst to the monomer solution. The P3HT samples synthesized in flow showed comparable performance to commercial P3HT samples in bulk heterojunction solar cell devices.
This article is published online in Beilstein Journal of Organic Chemistry and is free to access.
Exploring Challenges in the Synthesis of Pharmaceutical DrugsNews
This summer, Wendell and Loretta Hess Professor of Chemistry Ram Mohan will travel to India and Hong Kong to deliver a series of post-graduate workshops on advanced concepts in organic synthesis.
His workshop “Advanced Concepts in the Synthesis of Pharmaceutical Drugs” at the Indian Institute of Technology Indore will explore the unique, real-world challenges in the pharmaceutical industry to synthesize drugs that are both commercially viable and eco-friendly.
Modern Alchemists are Making Chemistry GreenerNews
Ancient alchemists tried to turn lead and other common metals into gold and platinum. Modern chemists in Paul Chirik’s lab at Princeton are transforming reactions that have depended on environmentally unfriendly precious metals, finding cheaper and greener alternatives to replace platinum, rhodium and other precious metals in drug production and other reactions.READ MORE
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