Heteroacenes

在化学学部有机动力学项目的支持下，乔治亚理工学院化学系的Uwe Bunz教授将合成具有单和双吡嗪亚结构的新型杂环烯。采用合适的缩合技术，可以合成四氮杂五烯、四氮杂七烯、四氮杂七烯及其反芳二氢同系物。为了在动力学上稳定和溶解这些四氮杂环，合适的烷基和炔基取代基将被附加到核心上。这些取代基的连接将允许操纵和芳核的固态排序。这种固态有序将显著改变这些物质在薄膜和微晶制备中的电子特性，并允许它们在n-半导体器件中的应用。由于它们的荧光和取代基模式，这些多叠氮杂环烯将作为有用的材料用于感官应用。在化学系有机动力学项目的支持下，Bunz教授将致力于新型材料的合成，这将导致新型n-半导体的产生，这将对薄膜晶体管和光伏电池的制造产生重大影响。拟议的活动将培养研究生、本科生和博士后研究人员，其基础广泛，将包括合成、光谱学和材料科学。外展活动包括在克拉克亚特兰大大学（HBCU）教学，并与GRAD亚特兰大计划合作指导高中生。邦茨教授将让来自市中心学校的少数民族高中生参与科学活动，并使他们对科学事业产生兴趣。

With the support of the Organic Dynamics Program in the Chemistry Division, Professor Uwe Bunz, of the Chemistry Department at Georgia Institute of Technology, will synthesize novel heteroacenes with single and double pyrazine-substructures. Using suitable synthetic condensation techniques, tetraazapentacenes, tetraazahexacenes, tetraazaheptacenes and their antiaromatic dihydro-congeners will be made. To kinetically stabilize and solubilize these tetraazaacenes, suitable alkyl and alkynyl substituents will be appended to the core. The attachment of these substituents will allow manipulation and the solid-state ordering of the aromatic core. This solid-state ordering will significantly alter the electronic properties of these species in thin films and microcrystalline preparations and allow their application in n-semiconductor devices. Due to their fluorescence and substituent patterns, these multiazaacenes will be useful as materials for sensory applications.With the support of the Organic Dynamics Program in the Chemistry Division, Professor Bunz will pursue the synthesis of novel materials that will lead to novel n-semiconductors, which will have a significant impact in the fabrication of thin film transistors and photovoltaic cells. The proposed activities that will train graduate students, undergraduate students and postdoctoral researchers will be broadly based and will include synthesis, spectroscopy, and materials science.Outreach activities involve teaching at Clark Atlanta University (an HBCU) and mentoring high school students in collaboration with the GRAD Atlanta Program. Professor Bunz will involve minority high school students from inner city schools in scientific activities and interest them in careers in science.