Collaborative Research: Tailoring organic/semiconductor interfaces by using tunable linker dipoles

合作研究：使用可调连接偶极子定制有机/半导体界面

• 批准号: 1213669
• 负责人: Elena Galoppini
• 金额: $ 31.06万
• 依托单位: Rutgers University Newark
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1213669&HistoricalAwards=false
• 关键词: Collaborative; Research; Tailoring; organic; semiconductor

The Chemical Structure, Dynamics and Mechanisms Program supports collaborative research between Professor Robert Bartynski of Rutgers University at New Brunswick and Professor Elena Galoppini at Rutgers University at Newark on the synthesis and characterization of tunable linker dipoles for improved solar energy conversion devices. This research, which brings together a synthetic chemist and a surface physicist, aims to achieve precise control of the electronic properties of the interface between an organic molecule and a semiconductor by tailoring the properties of the organic overlayer at the molecular level. Ultimately, this work will enhance the fundamental understanding and performance of organic-inorganic and organic-organic hybrid materials that are used in a wide variety of application areas including molecular electronics and photovoltaics. By molecular design of a variety of functional organic compounds, the research team will modify molecular energy levels (HOMO-LUMO) alignment, tune the donation and withdrawal of charge, and influence molecule bonding geometries at organic molecule/semiconductor interfaces. This will be accomplished using compounds with a Head-Linker-Anchor (HLA) configuration bound to metal oxide (TiO2 and ZnO) or organic (rubrene) semiconductor surfaces. The head groups (H) will be either organic chromophores or electron donor or acceptor groups, and the linker units (L) will contain an internal molecular dipole. The rigid linkers will be designed to bind at a well-defined orientation and distance from the semiconducting organic or inorganic surfaces. The electronic structure, dye-oxide energy level alignment, binding geometry, and effects of intermolecular interactions of HLA compounds on semiconductor substrates will be studied using a wide array, state-of-the-art ultrahigh vacuum-based surface characterization techniques. Spectroscopic and electrochemical measurements will complement the surface studies. The broader impact of this research, derived mainly from molecular level control of the organic/semiconductor interface, will touch many areas of science and technology including photocatalytic materials, photovoltaics, light-emitting diodes, and other devices. The educational component of the program will generate two innovative research modules where students gain hands-on experience that will solidify the connection between basic scientific research and technological advances that benefit society. Students will build simple solar cells based on molecules similar to those used in this research, but found in everyday items. The modules are easily adaptable for undergraduate laboratories at the two Rutgers campuses, and for demonstrations that will involve K-12 students. These activities will target underrepresented groups including high-school students from the Newark urban area. Student exchanges and co-advising of Ph.D. theses are integral to the program and the interdisciplinary collaboration between a synthetic chemist and a physicist will broaden the scientific education and training of the students from both laboratories.

化学结构，动力学和机制计划支持New Brunswick的Rutgers University的Robert Bartynski教授与Newark Rutgers University的Elena Galoppini教授之间的合作研究，涉及可调连接器偶极子的合成和表征，以改善阳光能量转换式启动。这项研究将合成化学家和表面物理学家汇集在一起​​，旨在通过在分子水平下定制有机叠加剂的性质来精确控制有机分子和半导体之间界面的电子特性。最终，这项工作将增强有机无机和有机有机杂种材料的基本理解和性能，这些材料用于多种应用领域，包括分子电子和光伏。通过各种功能性有机化合物的分子设计，研究团队将修改分子能水平（HOMO-LUMO）对齐，调整电荷的捐赠和戒断，并影响有机分子/半管接口的分子键合几何形状。这将使用与金属氧化物（TiO2和ZnO）或有机（rubrene）半导体表面结合的头链锚定（HLA）构型的化合物来完成。头组（H）将是有机发色团或电子供体或受体组，接头单位（L）将包含内部分子偶极子。刚性接头将设计为在定义明确的方向和距离半导体有机或无机表面的距离上结合。电子结构，染料 - 氧化能水平比对，结合几何形状以及HLA化合物的分子间相互作用将使用宽阵列，最先进的超高真空表面特性技术研究对半导体底物进行研究。光谱和电化学测量将补充表面研究。这项研究的广泛影响主要源自有机/半导体界面的分子水平控制，它将接触许多科学和技术领域，包括光催化材料，光伏，发光二极管和其他设备。该计划的教育部分将产生两个创新的研究模块，学生获得动手经验，以巩固基础科学研究与受益社会的技术进步之间的联系。学生将根据与本研究中使用的分子相似的分子来构建简单的太阳能电池，但在日常项目中发现。这些模块很容易适用于两个罗格斯校园的本科实验室，并且用于涉及K-12学生的演示。这些活动将针对代表性不足的团体，包括来自纽瓦克市区的高中生。学生交流和博士学位的共同审议这些是该计划不可或缺的，并且合成化学家与物理学家之间的跨学科合作将扩大来自两个实验室的学生的科学教育和培训。