Commentary on Covalent Tethering of Photo-responsive Superficial Layers on Hydrogel Surfaces

Volume 5 • Issue 3 • 1000229 Adv Tech Biol Med, an open access journal ISSN: 2379-1764 Hydrogels are widely used in the field related to biological medicine, such as drug carrier and drug delivery vehicle due to their excellent biocompatibility [1]. In the last two decades, hydrogels with diverse stimuli responsiveness were developed and utilized to construct the controlled release systems. However, conventionally strategies that are reported to prepare stimuli-responsive hydrogels usually suffer from complex preparation procedures [2-4] and the using of sol-gel transition process of the hydrogel to realize the controlled release would inevitably lead to the burst release [5-7]. Overcoming these limitations, we report a post-modified hydrogel with photo-controlled release property by covalent tethering of photo-responsive superficial layers on hydrogel surfaces in Chemical Science [8].