Stimuli Responsive Furan and Thiophene Substituted Difluoroboron β-Diketonate Materials.

ABSTRACT: Difluoroboron β-diketonate (BF₂bdk) compounds exhibit solid-state switchable luminescence under excitation by UV light. This property is usually manifested as a blue-shift in emission when dye films are thermally annealed followed by a red-shift in response to mechanical shear (i.e. mechanochromic luminescence). Here we report thiophene and furan heterocycle-substituted dyes bearing short methoxy and long dodecyloxy chain substituents. Optical properties of the dyes were investigated in solution, pristine powders, and films on paper and glass. The structural and thermal properties of the dyes were also investigated by powder x-ray diffraction (XRD) and differential scanning calorimetry (DSC), respectively. The methoxy-substituted dyes exhibited neither thermal nor mechano-respon

SUBMITTER: Morris WA 

PROVIDER: S-EPMC5321547 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature