TY  - JOUR
N1  - Copyright of this article belongs to ACS.
ID  - open2593
UR  - https://pubs.acs.org/doi/pdf/10.1021/acsomega.9b03904
IS  - 17
A1  - Bakaraju, Vikram
A1  - Prasad, E.Senthil
A1  - Meena, Brijesh
A1  - Chaturvedi, Harsh
Y1  - 2020/04/20/
N2  - We report an electronically and optically controlled bioelectronic field-effect transistor (FET) based on the hybrid film of photoactive bacteriorhodopsin and electronically conducting single-walled carbon nanotubes (SWNTs). Two-dimensional (2D) crystals of bacteriorhodopsin form the photoactive center of the bio?nano complex, whereas one-dimensional (1D) pure SWNTs provide the required electronic support. The redshift in the Raman spectra indicates the electronic doping with an estimated charge density of 3 × 106 cm?2. The hybrid structure shows a conductivity of 19 ?S/m and semiconducting characteristics due to preferential binding with selective diameters of semiconducting SWNTs. The bioelectronic transistor fabricated using direct laser lithography shows both optical and electronic gating with a significant on/off switch ratio of 8.5 and a photoconductivity of 13.15 ?S/m. An n-type FET shows complementary p-type characteristics under light due to optically controlled, electronic doping by the ?proton-pumping? bacteriorhodopsin. The fabricated bioelectronic transistor exhibits both electronically and optically well-controlled bifunctionality based on the functionalized hybrid electronic material.
PB  - American Chemical Society
JF  - ACS Omega
VL  - 5
KW  - Functionalization
KW  - Peptides and proteins
KW  - Membranes
TI  - An Electronic and Optically Controlled Bifunctional Transistor Based on a Bio?Nano Hybrid Complex
SP  - 9702
EP  - 9706
ER  -