CelloMOF: Nanocellulose Enabled 3D Printing of Metal–Organic Frameworks. (20th November 2018)

• Record Type: Journal Article
• Authors: Sultan, Sahar; Abdelhamid, Hani Nasser; Zou, Xiaodong; Mathew, Aji P.
• Is Part Of: Advanced functional materials. Volume 29:Number 2(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-11-20
• Subjects: 3D printing -- cellulose nanofibers -- drug release -- metal–organic frameworks -- scaffolds -- zeolitic imidazolate frameworks; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201805372
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: 3D printing is recognized as a powerful tool to develop complex geometries for a variety of materials including nanocellulose. Herein, a one‐pot synthesis of 3D printable hydrogel ink containing zeolitic imidazolate frameworks (ZIF‐8) anchored on anionic 2, 2, 6, 6‐tetramethylpiperidine‐1‐oxylradical‐mediated oxidized cellulose nanofibers (TOCNF) is presented. The synthesis approach of ZIF‐8@TOCNF (CelloZIF8) hybrid inks is simple, fast (≈30 min), environmentally friendly, takes place at room temperature, and allows easy encapsulation of guest molecules such as curcumin. Shear thinning properties of the hybrid hydrogel inks facilitate the 3D printing of porous scaffolds with excellent shape fidelity. The scaffolds show pH controlled curcumin release. The synthesis route offers a general approach for metal–organic frameworks (MOF) processing and is successfully applied to other types of MOFs such as MIL‐100 (Fe) and other guest molecules as methylene blue. This study may open new venues for MOFs processing and its large‐scale applications. Abstract : One‐pot synthesis of Cello‐MOF, a 3D printable hydrogel ink containing metal–organic frameworks anchored on anionic cellulose nanofibers, is presented. The synthesis approach allows easy encapsulation of drugs such as curcumin and methylene blue into CelloMOF. The stimuli‐responsive release of drugs from the 3D printed porous scaffold is demonstrated.