Heteroacenes

在化学系有机动力学项目的支持下，格鲁吉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并苯。使用合适的合成缩合技术，将制备四氮杂并五苯、四氮杂并六苯、四氮杂并七苯及其反芳族二氢同系物。为了动力学稳定和增溶这些四氮杂并苯，合适的烷基和炔基取代基将附加到核上。这些取代基的连接将允许芳族核的操纵和固态排序。这种固态排序将显着改变薄膜和微晶制剂中这些物种的电子性质，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，这些多氮杂并苯将作为传感器应用的材料是有用的。在化学部有机动力学计划的支持下，Bunz教授将继续合成新材料，这将导致新的n-半导体，这将对薄膜晶体管和光伏电池的制造产生重大影响。建议的活动，将培养研究生，本科生和博士后研究人员将是广泛的基础，将包括合成，光谱学和材料科学。推广活动涉及在克拉克亚特兰大大学（HBCU）教学和指导高中学生与格拉德亚特兰大计划合作。Bunz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，并使他们对科学职业感兴趣。

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.