Organic Conjugated Polymers Composed of Alternating Non-Fluorinated and Fluorinated Units: Novel Syntheses and Structure-Property Studies

这一奖项授予肯塔基大学的Mark Watson，其目标是研究液晶和非晶态有机聚合物的合成和结构-性能研究，这些聚合物具有明确的氟化和非氟化pi-电子体系的排列。将使用最近发现的一种不含过渡金属的合成方法来合成这些聚合物，并考察该反应的范围。将研究含有亚芳基和杂芳基、亚芳基和亚芳基以及亚芳基和亚乙基的共聚物。对于非氟化聚合物，也将研究相关的钯催化的Hiyama类型的偶联。具体的氟取代效应将通过使用X射线衍射、光学显微镜、量热法、分光光度法和使用LED等简单电子设备的光学(电子)表征的结构-性质研究，从建议的聚合物库中描绘出来。通过在合成中不使用过渡金属，提供了一种更绿色的合成，因为许多这些过渡金属有毒和/或昂贵，需要分离和处理过渡金属。此外，将通过定期访问地区机构与学生见面并就这项研究与学生交谈，从阿巴拉契亚地区招募学生。PI还将与肯塔基州列克星敦的探索博物馆合作，开发和实施实践活动和展览，传达聚合物、有机电子材料和纳米科学的基本化学/物理。这些活动也将被纳入探索大厅的“后备箱秀”，这些活动是在远离设施的地方进行的，以接触到可能无法参观博物馆遗址的弱势群体。为了向儿童传达这样的信息，即对社会和环境产生积极影响的研究可以源自他们，国际和平基金会还将编辑一个简单书写的英国研究人员和科学家的轶事传记素描轮流展览，并附上他们最近和孩提时代的照片。

This award to Mark Watson of the University of Kentucky has as its goal the synthesis and structure-property studies of liquid crystalline and amorphous organic polymers with defined arrangements of fluorinated and non-fluorinated pi-electron systems. A recently discovered transition metal free synthetic method for the synthesis of these polymers will be used and the scope of this reaction will be examined. Copolymers containing arylene and heteroarylene, arylene- and heteroarylene-vinylene, and arylene- and heteroarylene-ethynylene groups will be studied. The related palladium catalyzed Hiyama-type couplings will also be investigated for the non-fluorinated polymers. The effect of specific fluorine substitution will be delineated from the proposed library of polymers via structure-property studies using X-ray diffraction, optical microscopy, calorimetry, spectrophotometry, and opto(electronic) characterization using simple electronic devices such as LEDs.Broader Impacts. By not using transition metals in the syntheses, a more green synthesis is presented since many of these transition metals are toxic and/or expensive and require separation and disposal of the transition metals. Further, students will be recruited from Appalachia, a disadvantaged part of the country, by regularly visiting regional institutions to meet with and talking to the students about this research. The PI will also partner with the Explorium of Lexington, KY, a children's museum, to develop and implement hands-on activities and exhibits which convey basic chemistry/physics of polymers, organic electronic materials, and nanoscience. These activities will also be incorporated into the Explorium's "Trunk Shows", which are conducted away from the facility to reach the underprivileged that may not be able to visit the museum site. To convey to children that research leading to positive impacts on society and the environment can originate from them, the PI will also compile a "low-tech" rotating exhibit of simply written anecdotal biographical sketches of UK researchers and scientists native to Appalachia, accompanied by photos of them in recent times and as children.