Mechano-responsive chameleon-gel integrated with dumbbell-shaped spiropyran cross-linkeropen access
- Authors
- Jeong, Hyewon; Cho, Sungwoo; Heo, Eun-jin; Woo, Chaewon; Shin, Sung Gyu; Kim, Mun Ho; Jeong, Jae Hyun
- Issue Date
- Apr-2024
- Publisher
- ELSEVIER
- Keywords
- Dumbbell -shaped spiropyran; Chameleon -gel; Cross -linker; Mechanical stress
- Citation
- MATERIALS LETTERS, v.361
- Journal Title
- MATERIALS LETTERS
- Volume
- 361
- URI
- https://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/49337
- DOI
- 10.1016/j.matlet.2024.136141
- ISSN
- 0167-577X
1873-4979
- Abstract
- Stimuli -responsive hydrogels are being extensively studied altering their structures and physiochemical properties in response to external changes. However, technologies to visualize the internal stress of a gel generated by swelling and deswelling are still lacking. Here, we present a dumbbell -shaped spiropyran cross -linker synthesized by top -down grafting with poly(ethylene glycol) (PEG) acrylates. The cross -linker consists of spiropyran core that exhibits optical changes in response to mechanical stress, hydrophilic 2 -arm PEGs that allow the cross -linker soluble in an aqueous solution, and acrylate units at each end of PEGs that cross -links the gel. As a result, the chameleon -gels integrated with the dumbbell -shaped spiropyrans were proved to visualize the internal stress generated by swelling and deswelling in a controlled manner. Overall, this new strategy to prepare the mechanoresponsive hydrogel would be actively used in sensing, imaging, and display for drug delivery, tissue engineering, and environmental engineering, etc.
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Collections - Graduate School > Department of Chemical Engineering > 1. Journal Articles
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