CAREER: Coordination Polymer Superlattices with Tailored Properties through Chemical Vapor Deposition Synthesis

职业：通过化学气相沉积合成具有定制特性的配位聚合物超晶格

基本信息

批准号：
1848046
负责人：
Thomas Kempa
金额：
$ 62.98万
依托单位：
Johns Hopkins University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-02-01 至 2024-01-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1848046&HistoricalAwards=false
关键词：
CAREER Coordination Polymer Superlattices Tailored

项目摘要

Non-Technical AbstractCoordination polymers are versatile materials that are currently used to filter pollutants, store energy, and convert raw materials into useful chemicals. Recently, there has been great interest in using the extensive structural and chemical tunability of these materials to make a new generation of electronic devices, such as switches, sensors, and smart energy storage systems. However, the poor electrical performance of these materials, and a lack of synthetic methods capable of creating desired material properties has slowed progress. This CAREER project, supported by the Solid State and Materials Chemistry program in the Division of Materials Research, addresses these challenges by developing new methods to grow high quality crystalline coordination polymers from the gas phase. Furthermore, this proposal addresses the need to improve the electrical performance of these materials by creating a new material architecture called a superlattice, which is composed of single crystal sheets of various coordination polymers stacked on top of one another. The composition, structure, and layering of the individual sheets can be controlled. Because structure and function are so tailorable in the superlattice, it has the potential to support enhanced and novel properties, allowing it to exceed the performance limits of conventional polymers and solid-state materials. This research can enable technological advances in energy storage and conversion, and spawn a new generation of filters, actuators, sensors, and optical/electronic devices. Many of these technologies can be used to assure the sustainability and improved welfare of society. The research innovations and methods used in this research provide a multitude of student training opportunities in the synthesis, structure-property determination, and application of materials. In addition to the research objectives described in this proposal, the principal investigator is introducing two education and outreach activities: a podcast channel focused on materials science topics, and an online crowd-sourced database that curates materials synthesis protocols. These activities aim to increase the participation of under-represented minorities in STEM fields and to build a research infrastructure to accelerate the dissemination and verification of research protocols. Technical AbstractCoordination polymers (CPs) can be designed to express a diverse array of structures, porosities, and chemistries rendering them useful for applications in energy storage, separations, and catalysis. However, CPs with more complex functionalities and responsive properties are desired if they are to be successfully integrated into electronic devices. The principal hypothesis of this project, supported by a CAREER award through the Solid State and Materials Chemistry program in the Division of Materials Research, is that a CP superlattice can support complex, multivariate, and responsive properties. A superlattice comprising layered two-dimensional CP crystal lattices is an attractive architecture, because its inherent hierarchies of structure and composition can be tailored to promote desired or emergent physical properties. This CAREER project addresses the development of chemical vapor deposition methods for the tailored synthesis of CP superlattices and the study of these materials' dynamic and responsive properties. Chemical vapor deposition (CVD) is introduced as a strategy for the preparation of high-quality crystalline CP superlattices. The project focuses on three core objectives. First, the scope and mechanism of chemical vapor deposition synthesis of CP superlattices are being established. Second, transport studies conducted on devices fabricated on single crystals of CP superlattices are being used to elucidate their electronic properties. Third, heterostructured CP superlattices with multivariate and responsive properties are being developed and their potential to surpass the performance limits of conventional bulk 3D materials is being determined. In addition to the research objectives of this project, the principal investigator has introduced two education and outreach activities: a podcast channel focused on materials science topics, and an online crowd-sourced database that curates CVD synthesis protocols. These activities aim to increase the participation of under-represented minorities in STEM fields and to build a research infrastructure to accelerate the dissemination and verification of research protocols.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术抽象协调聚合物是通用的材料，目前用于过滤污染物，存储能量并将原材料转化为有用的化学物质。最近，人们对使用这些材料的广泛结构和化学可调节性来制造新一代的电子设备，例如开关，传感器和智能能源存储系统。但是，这些材料的不良性能以及缺乏能够创建所需材料特性的合成方法减慢了进度。在材料研究部的固态和材料化学计划的支持下，这个职业项目通过开发新方法来从天然气阶段发展出高质量的晶体协调聚合物来解决这些挑战。此外，该提案通过创建一种称为“超晶格”的新材料结构来提高这些材料的电气性能的需求，该材料由彼此堆叠在彼此之间的各种协调聚合物的单晶片组成。可以控制各个纸张的组成，结构和分层。由于结构和功能在超晶格中是可以量身定制的，因此它具有支持增强和新颖的特性的潜力，从而超过了传统聚合物和固态材料的性能极限。这项研究可以使能源存储和转换的技术进步，并产生新一代的过滤器，执行器，传感器和光学/电子设备。这些技术中有许多可用于确保可持续性和改善社会福利。本研究中使用的研究创新和方法为综合，结构性确定和材料的应用提供了许多学生培训机会。除了本提案中描述的研究目标外，首席研究人员还介绍了两项教育和外展活动：播客渠道，专注于材料科学主题，以及一个在线拥挤的数据库，该数据库策划了材料综合协议。这些活动旨在增加代表性不足的少数民族在STEM领域的参与，并建立研究基础设施以加速研究方案的传播和验证。技术摘要协调聚合物（CPS）的设计是为了表达各种结构，孔隙度和化学物质，可用于在储能，分离和催化中应用它们。但是，如果要成功整合到电子设备中，则需要具有更复杂功能和响应特性的CP。该项目的主要假设是通过材料研究部的固态和材料化学计划获得职业奖的支持，是CP超级晶格可以支持复杂，多变量和响应性能。包括分层的二维CP晶格的超晶格是一种有吸引力的结构，因为它的固有结构和组成层次结构可以量身定制，以促进所需或新兴的物理特性。该职业项目介绍了用于量身定制的CP超级晶格合成的化学蒸气沉积方法的开发以及这些材料的动态和响应性能的研究。引入化学蒸气沉积（CVD）作为制备高质量晶体CP超晶格的策略。该项目着重于三个核心目标。首先，正在建立化学蒸气沉积合成CP超晶格的范围和机理。其次，在CP超晶格的单晶体上进行的设备进行的运输研究被用于阐明其电子特性。第三，正在开发具有多元和响应特性的异质结构CP超晶格，并确定它们超过常规批量3D材料的性能限制的潜力。除了该项目的研究目标外，首席研究人员还介绍了两项教育和外展活动：播客渠道，专注于材料科学主题，以及一个在线人群中的数据库，该数据库策划了CVD综合协议。这些活动旨在增加代表性不足的少数群体在STEM领域的参与，并建立研究基础设施以加速研究协议的传播和验证。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛影响的审查标准来通过评估来通过评估来支持的。