Table 2.
Properties of photoresponsive hydrogels with different response mechanisms.
| Article Information | Composition of hydrogels | Mechanisms of photoreactions | Applications | Advantages | disadvantages |
|---|---|---|---|---|---|
| Wang et al.(2019)[27] | Azobenzene、α-CD | Photoisomerization | Optoelectronic devices | 1.Reversible 2.High biocompatibility 3.Rapid response |
1.Additional light source required 2.Insufficient accuracy |
| Bian et al.(2017)[125] | Azo-PDMAEMA PAA、 β-CD |
Photoisomerization | Delivery applications | ||
| Satoh et al.(2011)[126] | Sp、NIPAAm | Photoisomerization | Biomedical field Delivery applications |
1.Reversible 2.High biocompatibility 3.Suitable for use in the biomedical field |
1.Slow response |
| Chen et al.(2017)[127] | SP、Dox N-bis(acryloyl)cystamine |
Photoisomerization | Cell imaging | ||
| Cai et al.(2019)[38] | HA、O-nitrobenzyl alcohol | Photo(de)crosslinking | Cell culture | 1.Reversible 2.Fast crosslinking |
1.Durability decreases with time and repeated application 2. Requires photosensitizer |
| Lunzer et al.(2018)[128] | O-nitrobenzyl、PEG、HA | Photo(de)crosslinking | Cell culture | ||
| Yang et al.(2017)[129] | AzoAAM、β-CD | Photo(de)crosslinking | Sensors | 1.Reversible 2.Self-healing |
|
| Cao et al.(2022)[130] | Fe3O4、P(NIPAM-AM) | Photothermal | Actuators Biomedical devices |
1.Large bending angle(107.8°) 2.Reversible 3.Magnetic response |
1.Prone to aggregation, reducing photothermal conversion efficiency |
| Lee et al.(2015)[124] | MNP、PNIPAM | Photothermal | Actuators | 1.Rapid response 2.Reversible 3.Constant curvature variation (k ~ 7.5 mm−1) |
|
| Shao et al.(2018)[131] | BP、PDLLA-PEG-PDLLA | Photothermal | Photothermal therapy (PTT) | 1. High biocompatibility and biodegradability 2. Suitable for biomedical applications 3. High photothermal antibacterial properties (>99.5% killing efficiency) |
1.Urface modification is required to improve its stability |