Ferritin based bionanocages as novel biomemory device concept

Area of Science:

• Biomaterials Science
• Nanotechnology
• Electrochemistry

Background:

• Ferritin, an iron-storage protein, can be engineered for electronic applications due to its cage-like structure and redox activity.
• Electrochemical information storage devices require stable substrates capable of distinct 'write' and 'erase' states.

Purpose of the Study:

• To synthesize a ferritin-based protein biomemory substrate using a novel ANADOLUCA method.
• To investigate the electrochemical memory functions of ferritin bionanocages containing metal ions or ion pairs.
• To assess the stability and durability of the developed biomemory devices for future applications.

Main Methods:

• Synthesis of ferritin nanobeads via Amino Acid (monomer) Decorated and Light Underpinning Conjugation Approach (ANADOLUCA).
• Incorporation of silver, copper, or silver-copper ion pairs into ferritin bionanocages.
• Immobilization of bionanocages on graphene-modified glassy carbon electrodes.
• Electrochemical characterization using chronoamperometry (CA) and open circuit potential amperometry (OCPA).

Main Results:

• Successful synthesis of ferritin-based biomemory substrates with distinct electrochemical 'writing' and 'erase' states.
• Demonstrated memory functions of silver and copper ion-containing ferritin bionanocages.
• Confirmed stability and durability of the multi-state memory devices.

Conclusions:

• Ferritin-based bionanocages offer a promising platform for developing stable and durable bioelectronic information storage devices.
• The ANADOLUCA method provides an effective route for creating functional protein-based biomaterials.
• This work highlights the potential of bio-inspired materials in advancing future information technologies.