Optical properties of Bacteriorhodopsin-Gold Bionano Interfaces

Das, Subhabrata; Asmara, Teguh Citra; Patra, Abhirup; Song, Zhaoning; Bista, Sandip Singh; Somasundaran, Ponisseril; Rusydi, Andrivo; Barbiellini, Bernardo; Venkatesan, Renugopalakrishnan (2019-10-18)
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Das, Subhabrata
Asmara, Teguh Citra
Patra, Abhirup
Song, Zhaoning
Bista, Sandip Singh
Somasundaran, Ponisseril
Rusydi, Andrivo
Barbiellini, Bernardo
Venkatesan, Renugopalakrishnan
18.10.2019

The Journal of Physical Chemistry C

American Chemical Society

School of Engineering Science

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© 2019 American Chemical Society
https://doi.org/10.1021/acs.jpcc.9b06488
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2019102434631

Tiivistelmä

Monolayers of different mutants of bacteriorhodopsin (bR) with purple membranes are deposited on gold (Au) substrates. Optical measurements and density functional theory-based electronic structure calculations are reported for the first time for the bR chromophore, which is the retinal protonated Schiff base. The dielectric function of the chromophore is extracted using spectroscopic ellipsometry. Designed mutants of bR are used to investigate the bonding with the gold substrate and bR–Au bonding changes can be tracked using the optical properties of the retinal fragment.

Lähdeviite

Das S., Asmara T. C., Patra A., Song Z., Bista S. S., Somasundaran P., Rusydi A., Barbiellini B., Venkatesan R. (2019). Optical Properties of Bacteriorhodopsin–Gold Bionano Interfaces. The Journal of Physical Chemistry C. DOI: 10.1021/acs.jpcc.9b06488

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