Facile Deposition of Silver Nanoparticles on Photonic Cellulose Nanocrystals Films: A Study on Solvent Stability and Post Antibacterial Activity |
| |
| Authors: | Zahid Hanif Zeeshan Ahmad Khan Dongho Shin Dongwhi Choi Sung Jea Park |
| |
| Affiliation: | 1. School of Mechanical Engineering, Korea University of Technology and Education, P.O. Box 31253, Cheonan, Republic of Korea;2. Biohealth Products Research Center (BPRC), Inje University, P.O. Box 50834, Gimhae, Gyeongnam, Republic of Korea;3. Department of Mechanical Engineering (Integrated Engineering Program), Kyung Hee University, P.O. Box 17104, Yongin, Gyeonggi, Republic of Korea |
| |
| Abstract: | Cellulose nanocrystals (CNCs) incorporated with silver nanoparticles (AgNPs) photonic films have drawn considerable attention due to their plasmonic chiroptical activity. However, the exploitation of some fundamental properties for practical use such as the affinity analysis of metal nanoparticles attached to the surface of photonic films according to the solvent compatibility and antibacterial activity under physical conditions has yet not been studied. Hence, a facile process of in situ deposition of AgNPs into the chiral structure of CNC films is proposed. CNC photonic films, cross-linked by glutaraldehyde are prepared. This interaction generated the solvents-stable photonic film with a considerable amount of unreacted aldehyde functional groups that facilitates the reduction of Ag salt to AgNPs. The formed AgNPs in the photonic films show excellent stability over immersion in various polar and non-polar solvents. The post-solvent treated photonic films display excellent contact-based antibacterial behavior against gram-negative Escherichia coli. |
| |
| Keywords: | antibacterial properties cellulose nanocrystals hydrophobic photonics silver nanoparticles solvent-resistance |
|
|
