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Intracellular pH Sensors Based on Surface-Enhanced Raman Scattering
Abstract
We present the development of nanoscale pH sensors based on functionalized silver nanoparticles and surface-enhanced Raman scattering (SERS). The SERS spectrum from individual silver nanoparticle (50-80 nm in diameter) clusters functionalized with 4-mercaptobenzoic acid shows a characteristic response to the pH of the surrounding solution and is sensitive to pH changes in the range of 6-8. Measurements from nanoparticles incorporated in living Chinese hamster ovary cells demonstrate that the nanoparticle sensors retain their robust signal and sensitivity to pH when incorporated into a cell.
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Citations
Cited by
SERS—a single-molecule and nanoscale tool for bioanalytics
Kneipp, J., Kneipp, H., & Kneipp, K. (2008) · Chemical Society Reviews · doi:10.1039/b708459p · Cited by 1,075
Plasmon-enhanced optical sensors: a review
Li, M., Cushing, S. K., & Wu, N. (2015) · The Analyst · doi:10.1039/c4an01079e · Cited by 1,011
In Vivo Molecular Probing of Cellular Compartments with Gold Nanoparticles and Nanoaggregates
Kneipp, J., Kneipp, H., McLaughlin, M., Brown, D., & Kneipp, K. (2006) · Nano Letters · doi:10.1021/nl061517x · Cited by 472
Raman spectroscopy: techniques and applications in the life sciences
Shipp, D. W., Sinjab, F., & Notingher, I. (2017) · Advances in Optics and Photonics · doi:10.1364/aop.9.000315 · Cited by 396
Plasmonic nanoprobes for SERS biosensing and bioimaging
Vo‐Dinh, T., Wang, H., & Scaffidi, J. (2010) · Journal of Biophotonics · doi:10.1002/jbio.200910015 · Cited by 225
Bi, L., Wang, Y., Yang, Y., Li, Y., Mo, S., Zheng, Q., & Chen, L. (2018) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.7b19347 · Cited by 113
Metadata
- Authors
- Talley, C. E., Jusinski, L., Hollars, C. W., Lane, S. M., & Huser, T.
- Venue
- Analytical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2004-10-30
- Volume
- 76
- Issue
- 23
- Pages
- 7064-7068
- ISSN
- 0003-2700 (ISSN-L)
- 1520-6882
- OpenAlex
- W2074379564
- Cited by
- 343
- References
- 0
- FWCI
- 5.43
- Type
- journal article
- Language
- en
- Open access
- closed
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