Abstract
Coumarin was reacted with polyamic acid to form a luminous polyimide that is highly soluble in organic solvents and displays good thermal stability. Luminous side-chain coumarin 6 polyimide was obtained from incorporation of sulfonated coumarin 6 into polyamic acid. This polymer appeared in reddish brown solids and unusually exhibited a fairly strong visible light-emission of a yellowish green color. Fluorescence image patterning of side-chain coumarin 6 polyimide was successfully conducted by microtransfer molding of the polyamic acid and the subsequent thermal treatment for imidization. The polyimides exhibit high fluorescence, opening the possibility of new applications for these polymers.
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Park, BS., Kim, W.Y. & Yoon, KB. Luminous polyimide bearing the coumarin 6 chromophore in the side group: Synthesis and fluorescence image patterning. Korean J. Chem. Eng. 31, 172–177 (2014). https://doi.org/10.1007/s11814-013-0210-9
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DOI: https://doi.org/10.1007/s11814-013-0210-9