CAS:Rigidochromism in Polynuclear Metal-azole Macrocycles and Networks

在化学结构、动力学和机制项目B的支持下，普渡大学的亚历山大魏教授将开发新的发光分子。有机发光器件（OLED）的发展依赖于在红色、绿色和特别是蓝色波长下发光的化学稳定的材料。 本研究的重点是与铜离子结合在一起的刚性鞍形分子的合成和发光性能。 一个重要的问题是为什么这些分子是刚性的。 这些发光的铜配合物中的一些还可以响应环境的变化而改变颜色，并且可以用作化学传感器。资助活动旨在了解分子结构与物理性质之间的关系。 本研究透过创新的实验，将这些关系传达给学生和公众，从而促进柔性固态照明和显示器设计的进步。本项目的研究活动包括：（i）将唑类化合物的结构与相应铜配合物的刚性变色行为联系起来;（ii）开发用于调节固态发光体分子能带水平的正交方法;（iii）将唑类化合物的结构与相应铜配合物的刚性变色行为联系起来;（iv）将唑类化合物的结构与相应铜配合物的刚性变色行为联系起来。（iii）设计金属半导体框架（MOF），其对准激发态偶极子以用于单轴发射。所有的目标都有重要的影响，在开发高效的有机发光二极管的潜在应用的发光材料的设计。 这些目标植根于基于超分子化学原理的基础材料研究。此外，这些丰富多彩的综合体提供教育机会，向学生和公众展示重要的化学概念。作为与普渡大学化学系合作的K-12推广活动的一部分，魏教授和他的团队将设计发光测试条，当加热时可以产生绿色光，该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查进行评估，被认为值得支持的搜索.

With support from the Chemical Structure, Dynamics and Mechanisms Program B, Professor Alexander Wei at Purdue University will develop new luminescent (light-emitting) molecules. Advances in organic light-emitting devices (OLEDs) depend on chemically stable materials that emit at red, green and especially blue wavelengths. This research focuses on the synthesis and luminescent properties of rigid, saddle-shaped molecules which are held together with copper ions. One important question is why these molecules are rigid. Some of these light-emitting copper complexes can also switch colors in response to changes in their environment and may beapplied as chemical sensors. Grant activities are aimed at understanding the relationships between molecular structure and photophysical properties. This research has the potential to facilitate advances in the design of flexible solid-state lighting and displays through innovative experiments that can convey these relationships to students and the general public.Research activities in this project will include: (i) correlating azole structure with rigidochromic behavior of the corresponding copper complexes; (ii) developing orthogonal approaches for tuning molecular energy band levels of solid-state emitters; (iii) designing metal‒organic frameworks (MOFs) that align excited-state dipoles for uniaxial emission. All objectives have important ramifications for the design of emissive materials with potential applications in the development of efficient OLEDs. These objectives are rooted in fundamental materials research based on the principles of supramolecular chemistry. In addition, these colorful complexes offer educational opportunities to demonstrate important chemical concepts to students and the public at large. As part of a K-12 outreach activity in association with the Purdue Department of Chemistry, Professor Wei and his team will design luminescent test strips that can produce green light when heated, and blue light when exposed to volatile hydrocarbons such as gasoline vapor.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.