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Electroactive Organic Dye Incorporating Dipeptides in the Formation of Self-Assembled Nanofibrous Hydrogels

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journal contribution
posted on 15.10.2014, 00:00 by Yu-Hao Liu, Shu-Min Hsu, Fang-Yi Wu, Hsun Cheng, Mei-Yu Yeh, Hsin-Chieh Lin
In this study, we examined the self-assembly of four dipeptides conjugated with the electroactive dye naphthalenediimide (NDI). The presence of the NDI group at the N-terminus of Phe-Phe and Phe-Gly promoted the formation of one-dimensional (1-D) nanostructures and three-dimensional (3-D) colored hydrogels under both acidic and physiological conditions. The 1-D nanostructures of these gels were stabilized through intermolecular π–π interactions of the conjugated systems and extended hydrogen bonding of the dipeptide units.