Hyaluronic Acid Based Azo Polymer: Synthesis,Characterization, and Photo-Responsiveness |
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| Authors: | Heting Li Grace Qiao Wenlong Zhang Yaning He |
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| Affiliation: | Department of Chemical Engineering, Key Laboratory for Advanced Materials (MOE), Tsinghua University, Beijing, 100084 China |
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| Abstract: | Hyaluronic acid based azo polymer (HA-Azo-COOH) is synthesized by post-azo coupling reaction. Controllable grafting percent of azobenzene pendant is achieved by adjusting the feed ratio. In selective solvents (dimethyl sulfoxide/water), uniform colloidal aggregates of the prepared polymer can be obtained by self-assembly process. The self-assembled colloids can be elongated along the polarization direction of the irradiation laser light. The relationship between the deformation of colloids and the irradiation time is explored. |
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| Keywords: | azobenzene elliptical colloids hyaluronic acid photo-responsiveness |
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