Colorimetric reversibility of polydiacetylene supramolecules having enhanced hydrogen-bonding under thermal and pH stimuli |
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Authors: | Ahn Dong June Chae Eun-Hyuk Lee Gil Sun Shim Hee-Yong Chang Tae-Eun Ahn Kwang-Duk Kim Jong-Man |
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Affiliation: | Department of Chemical & Biological Engineering, Korea University, Seoul 136-701, Korea. ahn@korea.ac.kr |
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Abstract: | To investigate the role of hydrogen-bonding on colorimetric transition of polydiacetylene supramolecules, novel diacetylene derivatives allowing various hydrogen-bonding states were synthesized by coupling carboxy-substituted (ortho-, meta-, and para-) anilide groups with a typical single-chain diacetylene lipid. One with a terminal carboxyl group at the meta position provided the resulting supramolecular Langmuir-Schaefer films with enhanced hydrogen-bonding, and hence resulted in unprecedented colorimetric reversibility under both thermal and pH stimuli. |
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