Mechanochromic Luminescent Boron Diketonates

Cassandra L. Fraser得到了化学部大分子，超分子和纳米化学计划的支持，对显示可逆机械致变色发光的二氟硼β-二酮化合物进行研究。 这些不寻常的颜料改变发射颜色时，刮伤，压碎或涂抹，并可以自我消除与时间。 二氟硼β-二酮染料将进行结构改性，其固态和溶液的性质彻底的特点，以获得更好的机制洞察到影响初始和剪切后发射性能的因素，热和自愈合动力学。这些研究将深入了解影响机械致变色发光的分子和环境因素，并提出更有效地控制成像，传感和检测应用的方法，如光学机械传感器，安全油墨，篡改检测，智能和法医用途，前所未有的自擦除/自擦除响应颜料用于艺术，设计，消费品等。拟议的研究为研究生，本科生和高中学生提供独特的跨学科研究和培训经验，跨越化学，材料科学和物理学。创意艺术和建筑合作以及相关的大学范围内的跨学科课程提供了探索设计的机会，并与更广泛的受众分享科学的兴奋。

Professor Cassandra L. Fraser is supported by the Macromolecular, Supramolecular and Nanochemistry Program in the Chemistry Division to conduct research on difluoroboron beta-diketonates that show reversible mechanochromic luminescence. These unusual pigments change emission color when scratched, crushed or smeared, and can self erase with time. Difluoroboron beta-diketonate dyes will be structurally modified and their solid state and solution properties thoroughly characterized to gain better mechanistic insight into the factors influencing initial and post shear emission properties, and thermal and self-healing kinetics. These studies will provide insight into molecular and environmental factors affecting mechanochromic luminescence and suggest ways to more effectively control properties for imaging, sensing and detection applications such as opto-mechanosensors, security inks, tamper detection, intelligence and forensic uses, unprecedented self-erasing/rewritable responsive pigments for art, design, consumer products, and more. The proposed research provides unique interdisciplinary research and training experiences for graduate, undergraduate and high school students crossing chemistry, materials science, and physics. Creative arts and architecture collaborations and related university-wide interdisciplinary programs provide opportunities to explore design across the length scales and to share the excitement of science with broader audiences.