VNPs as Templates for Materials Synthesis - Viral Nanoparticles: Tools for Materials Science and Biomedicine - page 161

Figure 6.14 Biological toolkits: genetic engineering and biomolecular recognition.

(a) A schematic presentation of the multifunctional M13 virus is shown with the
proteins genetically engineered in this study. The gene VIII protein (pVIII), a major
capsid protein of the virus, is modified to serve as a template for

α

growth, and
the gene III protein (pIII) is further engineered to have a binding affinity for SWNTs.
(b) A schematic diagram for fabricating genetically engineered high-power lithium-ion
battery cathodes using multifunctional viruses (two-gene system) and a photograph of
the battery used to power a green LED. The biomolecular recognition and attachment
to conducting SWNT networks make efficient electrical nanoscale wiring to the active
nanomaterials, enabling high-power performance. These hybrid materials were
assembled as a positive electrode in a lithium-ion battery using lithium metal foil
as a negative electrode to power a green LED. Active cathode materials loading was
3.21 mg/cm

-FePO
4

. The 2016 Coin Cell, which is 2 cm in diameter and 1.6 mm in thickness,
was used. LED power dissipation was 105 mW. Reproduced with permission from
Lee, Y. J., Yi, H., Kim, W. J., Kang, K., Yun, D. S., Strano, M. S., Ceder, G., and Belcher, A.
M. (2009) Fabricating genetically engineered high-power lithium-ion batteries using
multiple virus genes,

2

Science , 324 , 1051.

. oVerVIeW oF InorgAnIC MAterIAlS SyntheSIzed on
VnPs

Table 6.1 Overview of the inorganic materials synthesized on VNPs

VNP Material Synthesis mechanism Reference

CCMV
(interior)

Molybdate
Vanadate

Electrostatically driven synthesis Douglas and

Young (1998)

CCMV
(interior)

Iron oxide (γ-
FeOOH)

Electrostatically driven synthesis
(CCMV mutant with altered
surface charge was used as
template)

Douglas et al .

(2002)

CCMV
(interior)

Prussian blue Electrostatically driven synthesis de la Escosura et

al . (2008)