Addition/Correction Cite This: ACS Appl. Bio Mater. XXXX, XXX, XXX−XXX
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Addition to “Plasmon−Exciton Coupling in Photosystem I Based Biohybrid Photoelectrochemical Cells” Zheng Zeng, Taylor Mabe, Wendi Zhang, Bhawna Bagra, Zuowei Ji, Ziyu Yin, Kokougan Allado, and Jianjun Wei*
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ACS Appl. Bio Mater. 2018, 1 (3), 802−807. DOI: 10.1021/acsabm.8b00249 This Addition/Correction is a response to concerns regarding our published paper1 raised by authors of a paper titled “Plasmon Enhanced Photocurrent from Photosystems I Assembled on Ag Nanopyramids” in the Journal of Physical Chemistry Letters.2 Their first concern is that our paper is not the first direct experimental observation of plasmon-induced photocurrent enhancements from PSI. The second concern they stated as “the authors fail to cite our aforesaid article that is highly relevant and provides the foundational experimental work in this area. We believe that the content of our paper would have helped the authors more carefully examine their work in the context of the state-of-the art of the f ield”. In the paper published in J. Phys. Chem. Lett., the authors claim the “f irst-ever experimental observation of photocurrent enhancements due to plasmon induced electric f ield in cyanobacterial PSI immobilized on Fischer patterns of Ag-NP structures”. The research presented in this area is valuable to the greater community, though some other metal NP-PSI systems have shown photocurrent enhancement earlier (for example, please see ref 28 in our article). In our paper we state that “... we used a nanoslit design for an electrochemical setup and, for the f irst time, observed the photocurrent generation of PSI proteins in a nanoscale plasmonic structure”. While the plasmon− exciton coupling is a general mechanism that has been used in many other cases for photocurrent enhancement (for examples, please see ref 48 in our article), our statement is true since this is the first time one is able to confine the immobilized PSI in a non-NP-based, single nanoslit photoelectrochemical cell where the one side of the nanoslit is used as a working electrode and the other as a counter electrode. Also this is the first time the photocurrent generation is directly correlated to the experimentally measured field enhancement as well as the computationally caculated plasmonic generation efficiency by changing the nanoslit width. It is clear that our system is distinct from that described in their article and was exmined from different perspectives.
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REFERENCES
(1) Zeng, Z.; Mabe, T.; Zhang, W.; Bagra, B.; Ji, Z.; Yin, Z.; Allado, K.; Wei, J. Plasmon−Exciton Coupling in Photosystem I Based Biohybrid Photoelectrochemical Cells. ACS Appl. Bio Mate. 2018, 1 (3), 802−807. (2) Pamu, R.; Sandireddy, V. P.; Kalyanaraman, R.; Khomami, B.; Mukherjee, D. Plasmon-Enhanced Photocurrent from Photosystem I Assembled on Ag Nanopyramids. J. Phys. Chem. Lett. 2018, 9 (5), 970−977.
© XXXX American Chemical Society
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DOI: 10.1021/acsabm.8b00580 ACS Appl. Bio Mater. XXXX, XXX, XXX−XXX
