Supramolecular Hydrogels with Chiral Nanofibril Structures Formed from beta-Cyclodextrin and a Rosin-Based Amino Acid Surfactant

编号 020027504

推送时间 20210125

研究领域 林产化工 

年份 2021 

类型 期刊 

语种 英语

标题 Supramolecular Hydrogels with Chiral Nanofibril Structures Formed from beta-Cyclodextrin and a Rosin-Based Amino Acid Surfactant

来源期刊 JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

期 第275期

发表时间 20200916

关键词 rosin;  amino acid;  beta-cyclodextrin;  hydrogels; 

摘要 The rational combination of natural molecules is expected to provide new soft material building blocks. Herein, a rosin-based amino acid surfactant was synthesized using dehydroabietic acid and L-serine as the starting materials (denoted as R-6-Ser). Supramolecular hydrogels were formed when beta-cyclodextrin (beta-CD) was mixed with R-6-Ser at molar ratios of over 0.5:1 and above certain concentrations. The hydrogels were investigated using rheometry, small-angle X-ray scattering, CD spectroscopy, and cryo-transmission electron microscopy (cryo-TEM). The beta-CD associated with the isopropyl benzyl group of the dehydroabietic acid unit in R-6-Ser and formed R-6-Ser@beta-CD complexes. The complexes and R-6-Ser self-assembled to form elongated right-handed rigid fibers with a diameter of approximately 7-8 nm, which were responsible for the elasticity of the hydrogels. This work demonstrated the feasibility of preparing supramolecular hydrogels from a diterpenoid-based surfactant and beta-CD and provides a new means of utilizing the secretions of pine trees.

服务人员 尚玮姣

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