Molecular Design of Air-Stable n-type Fluorocarbon Semiconductors

空气稳定n型氟碳半导体的分子设计

• 批准号: 1362302
• 负责人: Steven Strauss
• 金额: $ 45万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1362302&HistoricalAwards=false
• 关键词: Molecular; Design; Air; Stable; type

In this project funded by the Chemical Structure, Dynamic & Mechanism B Program of the Chemistry Division, Professor Steven Strauss and Dr. Olga Boltalina of the Department of Chemistry at Colorado State University will design a series of new robust, air stable fluorocarbon acceptor materials from earth-abundant elements. These new light-weight fluoroorganic acceptors will possess incrementally tunable electronic properties desirable for n-type organic semiconductors and sufficiently broad range of solid state packing motifs to allow for molecular engineering of high-performance and air-stable materials for optoelectronics. Their potential applications include but are not limited to various organic electronic architectures (organic photovoltaic devices, organic light-emitting diodes, Organic thin-film transistors, and various types of chemical sensors). An important goal of this project will be the advancement of scientific education by broadly training graduate students to become the next generation of problem-solving scientists. By participating in this project they will become chemical jacks-of-all-trades, learning the difficult art of chemical synthesis and then mastering, through hands-on experimentation, an armamentarium of physical techniques, including those in collaborators laboratories around the world.These materials are based on hydrocarbyl and heteroatom-containing polycyclic aromatic hydrocarbons with multiple electron-withdrawing groups, primarily, but not exclusively, fluorocarbon groups. In contrast to common synthetic approaches involving multiple steps and metal catalysts, the team will use a solvent-, catalyst-, or promoter-free gas-phase syntheses that will efficiently yield most thermodynamically stable products. Fundamental understanding of the interrelationships between single molecule properties and bulk material and composites functions will be gained through a systematic approach based on studies of the carefully selected families of high-purity novel electroactive fluorocarbon compounds by the following physicochemical techniques: gas-phase electron affinity measurements by low-temperature photoemission spectroscopy; cyclic voltammetry; ESR- and UV-Vis-NIR-spectroelectro-chemistry; time resolved microwave conductivity of thin films and blends with donor materials; and time-resolved photoluminescence measurements of thin films and blends.

在这个由化学系化学结构、动力学机制B项目资助的项目中，科罗拉多州立大学化学系的Steven Strauss教授和Olga Boltalina博士将从地球上丰富的元素中设计一系列新的坚固的、空气稳定的氟碳受体材料。这些新的轻质含氟有机受体将具有n型有机半导体所需的增量可调的电子特性和足够宽的固态包装图案范围，以允许用于光电子学的高性能和空气稳定材料的分子工程。 它们的潜在应用包括但不限于各种有机电子架构（有机光伏器件、有机发光二极管、有机薄膜晶体管和各种类型的化学传感器）。 该项目的一个重要目标是通过广泛培养研究生成为下一代解决问题的科学家来促进科学教育。通过参与这个项目，他们将成为化学的多面手，学习困难的化学合成艺术，然后通过动手实验掌握一整套物理技术，包括世界各地合作者实验室的技术。这些材料基于具有多个吸电子基团的烃基和含杂原子的多环芳烃，主要但不限于，氟碳基团。 与涉及多个步骤和金属催化剂的常见合成方法相比，该团队将使用无溶剂，无催化剂或无促进剂的气相合成，有效地产生最稳定的产品。通过以下物理化学技术，基于对精心选择的高纯度新型电活性氟碳化合物家族的研究的系统方法，将获得对单分子性质与本体材料和复合材料功能之间相互关系的基本理解：通过低温光电子能谱的气相电子亲和势测量;循环伏安法; ESR和UV-Vis-NIR光谱电化学;时间分辨的薄膜和与施主材料的共混物的微波电导率;和时间分辨的薄膜和共混物的光致发光测量。