Electronic structure of cyclodextrin–carbon nanotube composite films
Abstract
The electronic structures of two kinds of cyclodextrin–carbon nanotube (αCD–CNT and γCD–CNT) composite films are investigated by using (angular dependent) photoelectron spectroscopy to gain insight as to why the αCD–CNT and γCD–CNT composite films show different performances in biosensor applications. The γCD–CNT composite film is likely to have the CD localized on the surface rather than in the bulk of the film, while αCD–CNT has CD relatively more concentrated within the bulk of selvedge region of the film, rather than the surface. The results indicate that the CD, of the γCD–CNT composite, may be more bioactive, and possibly a better sensor of biomolecules due to the favorable surface position compared with that of αCD–CNT. The valence band of αCD–CNT and γCD–CNT show little difference from the CNT film except for a density of states, originating from CD, evident at a binding energy near 27 eV below Fermi level, meaning that there are few or no redox interactions between the CD and the CNT. The absence of a redox interaction between the CD and the CNT permits a clear electrochemical response to occur when guest biomolecules are captured on the composites, providing a route to biosensor applications.
- Authors:
-
[1];
[2];
[2]
- Daegu Univ., Gyeongsan (Korea). Dept. of Physics, Inst. of Basic Science
- Univ. of Nebraska, Lincoln, NE (United States). Dept. of Physics and Astronomy
- Publication Date:
- Research Org.:
- Univ. of Nebraska, Lincoln, NE (United States)
- Sponsoring Org.:
- USDOE; National Research Foundation of Korea (NRF)
- OSTI Identifier:
- 1423560
- Grant/Contract Number:
- FG02-07ER15842
- Resource Type:
- Accepted Manuscript
- Journal Name:
- RSC Advances
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 18; Journal ID: ISSN 2046-2069
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Jeong, Hae Kyung, Echeverria, Elena, Chakraborti, Priyanka, Le, Hien Thi, and Dowben, P. A. Electronic structure of cyclodextrin–carbon nanotube composite films. United States: N. p., 2017.
Web. doi:10.1039/c6ra26900a.
Jeong, Hae Kyung, Echeverria, Elena, Chakraborti, Priyanka, Le, Hien Thi, & Dowben, P. A. Electronic structure of cyclodextrin–carbon nanotube composite films. United States. https://doi.org/10.1039/c6ra26900a
Jeong, Hae Kyung, Echeverria, Elena, Chakraborti, Priyanka, Le, Hien Thi, and Dowben, P. A. Fri .
"Electronic structure of cyclodextrin–carbon nanotube composite films". United States. https://doi.org/10.1039/c6ra26900a. https://www.osti.gov/servlets/purl/1423560.
@article{osti_1423560,
title = {Electronic structure of cyclodextrin–carbon nanotube composite films},
author = {Jeong, Hae Kyung and Echeverria, Elena and Chakraborti, Priyanka and Le, Hien Thi and Dowben, P. A.},
abstractNote = {The electronic structures of two kinds of cyclodextrin–carbon nanotube (αCD–CNT and γCD–CNT) composite films are investigated by using (angular dependent) photoelectron spectroscopy to gain insight as to why the αCD–CNT and γCD–CNT composite films show different performances in biosensor applications. The γCD–CNT composite film is likely to have the CD localized on the surface rather than in the bulk of the film, while αCD–CNT has CD relatively more concentrated within the bulk of selvedge region of the film, rather than the surface. The results indicate that the CD, of the γCD–CNT composite, may be more bioactive, and possibly a better sensor of biomolecules due to the favorable surface position compared with that of αCD–CNT. The valence band of αCD–CNT and γCD–CNT show little difference from the CNT film except for a density of states, originating from CD, evident at a binding energy near 27 eV below Fermi level, meaning that there are few or no redox interactions between the CD and the CNT. The absence of a redox interaction between the CD and the CNT permits a clear electrochemical response to occur when guest biomolecules are captured on the composites, providing a route to biosensor applications.},
doi = {10.1039/c6ra26900a},
journal = {RSC Advances},
number = 18,
volume = 7,
place = {United States},
year = {Fri Feb 10 00:00:00 EST 2017},
month = {Fri Feb 10 00:00:00 EST 2017}
}
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Works referencing / citing this record:
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