Gold Nanoparticles Mineralized by Peptide Liquid Crystals with Dual-Functional Enzyme-like Activities: An Automatic Membrane Reactor for Glucose Detection.
Gong ZhangQing LiJieai LiMenghan PanYuefei WangRongxin SuWei QiWei ZhangPublished in: Langmuir : the ACS journal of surfaces and colloids (2023)
The development of stable multifunctional enzyme mimics with tandem catalytic effects provides a great opportunity to construct economical and convenient bioassays. Inspired by biomineralization, in this work self-assembled N -(9-fluorenylmethoxycarbonyl)-protected tripeptide (Fmoc-FWK-NH 2 ) liquid crystals were used as templates to in situ mineralize Au nanoparticles (AuNPs), and then a dual-functional enzyme-mimicking membrane reactor based on AuNPs and peptide-based hybrids was constructed. AuNPs with a uniform particle size and good dispersion were in situ reduced on the surface of the peptide liquid crystal due to the reduction of the indole group on the tryptophan residue, which exhibited excellent peroxidase-like and glucose oxidase-like activities simultaneously. Meanwhile, the oriented nanofibers aggregated into a three-dimensional network, which was further immobilized on the mixed cellulose membrane to form a membrane reactor. A biosensor was made to realize fast, low-cost, and automatic detection for glucose. This work represents a promising platform for the design and construction of novel multifunctional materials based on the biomineralization strategy.
Keyphrases
- gold nanoparticles
- wastewater treatment
- ionic liquid
- low cost
- room temperature
- label free
- blood glucose
- drug delivery
- deep learning
- sensitive detection
- loop mediated isothermal amplification
- machine learning
- anaerobic digestion
- cancer therapy
- high throughput
- adipose tissue
- nitric oxide
- metal organic framework
- mass spectrometry
- amino acid