期刊
CHEMPHYSCHEM
卷 22, 期 21, 页码 2256-2261出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.202100276
关键词
hydrogelator; rheology; kinetics; fractal dimension; confocal microscopy
资金
- NanoNextNL [07A.11]
The study found that in pH-triggered supramolecular gels, lower trigger concentrations led to gels with fractal dimensions estimated using the Avrami growth model, which aligned well with the microstructure observed through Confocal Laser Scanning Microscopy.
Properties such as shear modulus, gelation time, structure of supramolecular hydrogels are strongly dependent on self-assembly, gelation triggering mechanism and processes used to form the gel. In our work we extend reported rheology analysis methodologies to pH-triggered supramolecular gels to understand structural insight using a model system based on N-N' Dibenzoyl-L-Cystine pH-triggered hydrogelator and Glucono-delta-Lactone as the trigger. We observed that Avrami growth model when applied to time-sweep rheological data of gels formed at lower trigger concentrations provide estimates of fractal dimension which agree well compared with visualization of the microstructure as seen via Confocal Laser Scanning Microscopy, for a range of gelator concentrations.
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