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Updated: Jan 20, 2026

Development and Characterization of Fusidic Acid-Loaded Alginate-Aloe vera Based Hydrogel FilmWound Healing
Published on: December 13, 2024
Near-infrared light-responsive alginate hydrogels based on diselenide-containing cross-linkage for on demand
Daru Seto Bagus Anugrah1, Kaylan Ramesh1, Mingeun Kim2
1Department of Display Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Republic of Korea.
Abstract:
A biodegradable, near-infrared (NIR) - responsive hydrogel is one of the most promising strategies as a remotely triggered drug carrier. In this study, novel NIR-responsive hydrogels based on alginate structures were prepared for controllable drug release. The hydrogels were formed rapidly by reacting norbornene-functionalized alginates and tetrazine cross-linkers containing diselenide bonds via inverse electron demand Diels-Alder click chemistry. In order to manipulate their properties, we prepared hydrogels with various cross-linking densities. NIR sensitive indocyanine green (ICG) and a drug, doxorubicin (DOX) were incorporated in the hydrogel matrix during gelation. The hydrogels showed a suppressed release profile under physiological conditions, while NIR light triggered a rapid release of DOX. Under NIR-light irradiation, ICG generated reactive oxygen species which could decompose diselenide bonds in the hydrogel matrix, inducing the gel-sol transition and release of entrapped DOX. The degradation of hydrogels could be also controlled by the ratio of the precursors.
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