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Electroactive Silk Fibroin Films for Electrochemically Enhanced Delivery of Drugs
Author(s) -
Mousavi Seyed T.,
Harper Garry R.,
Municoy Sofia,
Ashton Mark D.,
Townsend David,
Alsharif Ghazi H. K.,
Oikonomou Vasileios K.,
Firlak Melike,
AuYong Sophie,
Murdock Bethany E.,
Akien Geoffrey R.,
Halcovitch Nathan R.,
Baldock Sara J.,
Fazilati Mohamad,
Kolosov Oleg V.,
Robinson Benjamin J.,
Desimone Martin F.,
Hardy John G.
Publication year - 2020
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.202000130
Subject(s) - fibroin , materials science , fourier transform infrared spectroscopy , bombyx mori , chemical engineering , thermogravimetric analysis , silk , scanning electron microscope , polymer chemistry , nuclear chemistry , composite material , chemistry , biochemistry , gene , engineering
Biomaterials capable of controlling the delivery of drugs have the potential to treat a variety of conditions. Herein, the preparation of electrically conductive silk fibroin film‐based drug delivery devices is described. Casting aqueous solutions of Bombyx mori silk fibroin, followed by drying and annealing to impart β‐sheets to the silk fibroin, assure that the materials are stable for further processing in water; and the silk fibroin films are rendered conductive by generating an interpenetrating network of a copolymer of pyrrole and 3‐amino‐4‐hydroxybenzenesulfonic acid in the silk fibroin matrix (characterized by a variety of techniques including circular dichroism, Fourier‐transform infrared spectroscopy, nuclear magnetic resonance, Raman spectroscopy, resistance measurements, scanning electron microscopy‐energy dispersive X‐ray spectroscopy, thermogravimetric analysis, X‐ray diffraction, and X‐ray photoelectron spectroscopy). Fibroblasts adhere on the surface of the biomaterials (viability assessed using an (3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyltetrazolium bromide) assay and visualized using a confocal microscope), and a fluorescently labeled drug (Texas‐Red Gentamicin) can be loaded electrochemically and released (µg cm −2 quantities) in response to the application of an electrical stimulus.