"Design, Synthesis, and Characterization of New Electroactive and Photoactive Conjugated Oligomers and Polymers"

共轭聚合物由于将金属或无机材料的最佳特性与合成聚合物的最佳特性结合在一起而受到广泛关注。这种协同作用不仅使这些材料在现有设备中有用，而且还创造了全新的机会。在我们的研究项目中，我们希望研究新的电活性和光活性低聚物和聚合物在塑料电子中的应用。更准确地说，在第一个项目中，我们想要开发新的合成策略，即所谓的新型共轭聚合物的绿色合成。这种方法不仅可以以更容易、更快、更便宜、更清洁的方式合成已知的聚合物，而且还可以合成传统聚合反应无法获得的、定义明确的新型聚合物。这些聚合物对于柔性和低成本太阳能电池的开发尤其有趣。在另一个项目中，我们打算为共轭聚合物开发新的构建块。特别是，我们将重点关注噻吩吡咯二酮类、二酮吡咯二酮类和异靛蓝类单位的新型硫衍生物（即硫酮）。同时，我们打算制备和研究由二酮吡咯和类异靛蓝单元衍生的两亲性低聚物和聚合物。Langmuir-Blodgett技术将用于制备具有不同结构取向的各种薄膜。这项工作对共轭分子内的电荷输运和能量传递有一定的启示。最后，在第三个项目中，我们希望开发新的聚合物生物传感器，用于直接检测癌症生物标志物，如DNA超甲基化。这些工具也可以用来直接检测水中各种细菌的存在。这三个关于不同共轭低聚物和聚合物的原创性研究项目将导致新一代具有优化物理性能的电活性和光活性材料的合理设计。因此，所有这些研究都应该扩大有机材料应用的可能性，从而使工业和公众都受益。

Conjugated polymers have received a lot of attention since they combine the best features of metals or inorganic materials with those of synthetic polymers. This synergy not only makes these materials useful in existing devices but also creates completely new opportunities. In our research projects, we want to investigate new electroactive and photoactive oligomers and polymers for applications in plastic electronics. More precisely, in a first project, we want to develop new synthetic strategies for the so-called green synthesis of new conjugated polymers. This approach should not only create already known polymers in an easier, faster, cheaper, and cleaner way but should also allow the synthesis of novel well-defined polymers not available through traditional polymerization reactions. These polymers should be particularly interesting for the development of flexible and low-cost solar cells. In another project, we intend to develop novel building blocks for conjugated polymers. In particular, we will focus on new sulfur derivatives (i.e. thioketones) of thienopyrrolediones, diketopyrrolopyrroles, and isoindigo-like units. In parallel, we intend to prepare and investigate amphiphilic oligomers and polymers derived from diketopyrrolopyrrole and isoindigo-like units. Langmuir-Blodgett technique will be utilized to prepare various thin films with different structural orientation. This work should shed some light on the charge transport and energy transfer within conjugated molecules. Finally, in a third project, we want to develop new polymeric biosensors for the direct detection of cancer biomarkers such as DNA hypermethylation. These tools could also be employed to directly detect the present of various bacteria in water. These three original research projects on different conjugated oligomers and polymers should lead to a rational design of a new generation of electroactive and photoactive materials with optimized physical properties. All these studies should therefore enlarge the possibilities of applications of organic materials and should therefore benefit to both the industry and the public.