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Singlet Oxygen Production by Peptide-Coated Quantum Dot−Photosensitizer Conjugates
Open accessAbstract
Peptide-coated quantum dot-photosensitizer conjugates were developed using novel covalent conjugation strategies on peptides which overcoat quantum dots (QDs). Rose bengal and chlorin e6, photosensitizers (PSs) that generate singlet oxygen in high yield, were covalently attached to phytochelatin-related peptides. The photosensitizer-peptide conjugates were subsequently used to overcoat green- and red-emitting CdSe/CdS/ZnS nanocrystals. Generation of singlet oxygen could be achieved via indirect excitation through Förster (fluorescence) resonance energy transfer (FRET) from the nanocrystals to PSs, or by direct excitation of the PSs. In the latter case, by using two color excitations, the conjugate could be simultaneously used for fluorescence imaging and singlet oxygen generation. Singlet oxygen quantum yields as high as 0.31 were achieved using 532-nm excitation wavelengths.
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Cites
Physical Mechanisms of Generation and Deactivation of Singlet Oxygen
Schweitzer, C., & Schmidt, R. (2003) · Chemical Reviews · doi:10.1021/cr010371d · Cited by 2,123
Cited by
Reactive oxygen species generating systems meeting challenges of photodynamic cancer therapy
Zhou, Z., Song, J., Nie, L., & Chen, X. (2016) · Chemical Society Reviews · doi:10.1039/c6cs00271d · Cited by 2,098
Quantum dots in biomedical applications
Wagner, A. M., Knipe, J. M., Orive, G., & Peppas, N. A. (2019) · Acta Biomaterialia · doi:10.1016/j.actbio.2019.05.022 · Cited by 632
Li, Y., Zhang, P., Tang, W., McHugh, K. J., Kershaw, S. V., Jiao, M., Huang, X., Kalytchuk, S., Perkinson, C. F., Yue, S., et al. (2022) · ACS Nano · doi:10.1021/acsnano.2c01153 · Cited by 98
Approaches to improve photodynamic therapy of cancer
Firczuk, M. (2011) · Frontiers in Bioscience · doi:10.2741/3684 · Cited by 55
Metadata
- Authors
- Tsay, J. M., Trzoss, M., Shi, L., Kong, X., Selke, M., Jung, M. E., & Weiss, S.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-05-01
- Volume
- 129
- Issue
- 21
- Pages
- 6865-6871
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2029130502
- Cited by
- 291
- References
- 1
- FWCI
- 9.14
- Type
- journal article
- Language
- en
- Open access
- green
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- Tsay, J. M., Trzoss, M., Shi, L., Kong, X., Selke, M., Jung, M. E., & Weiss, S. (2007). Singlet Oxygen Production by Peptide-Coated Quantum Dot−Photosensitizer Conjugates. Journal of the American Chemical Society. https://doi.org/10.1021/ja070713i
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