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Mathai S, Bird DK, Stylli SS, Smith TA, Ghiggino KP. Two-photon absorption cross-sections and time-resolved fluorescence imaging using porphyrin photosensitisers. Photochem Photobiol Sci 2007; 6:1019-26. [PMID: 17721602 DOI: 10.1039/b705101h] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three porphyrin systems have been characterised for use in two-photon fluorescence imaging of biological samples. We have determined the two-photon absorption cross sections (sigma(2)) of the di-cation, free-base and metallated forms of hematoporphyrin derivative (HpD), hematoporphyrin IX (Hp9) and a boronated protoporphyrin (BOPP) using the open-aperture Z-scan and the two-photon induced fluorescence (TPIF) techniques at an excitation wavelength of 800 nm. The insertion of either protons or a metal ion into the macrocycle is shown not to significantly influence the sigma(2) of the porphyrins. Two-photon time-resolved fluorescence images of C6 glioma cells transfected with a free-base form of the BOPP have been obtained as a function of the porphyrin concentration. These studies reveal a maximum useful porphyrin concentration for fluorescence imaging purposes of approximately 30 microg mL(-1).
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Affiliation(s)
- Sean Mathai
- School of Chemistry, The University of Melbourne, Victoria, 3010, Australia
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Gensch T, Hofkens J, van Stam J, Faes H, Creutz S, Tsuda K, Jérôme R, Masuhara H, De Schryver FC. Transmission and Confocal Fluorescence Microscopy and Time-Resolved Fluorescence Spectroscopy Combined with a Laser Trap: Investigation of Optically Trapped Block Copolymer Micelles. J Phys Chem B 1998. [DOI: 10.1021/jp9824104] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas Gensch
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, BE-3001 Heverlee, Belgium, Center for Education and Research on Macromolecules (CERM), University of Liège, Sart-Tilman B6, BE-4000 Liège, Belgium, and Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan
| | - Johan Hofkens
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, BE-3001 Heverlee, Belgium, Center for Education and Research on Macromolecules (CERM), University of Liège, Sart-Tilman B6, BE-4000 Liège, Belgium, and Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan
| | - Jan van Stam
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, BE-3001 Heverlee, Belgium, Center for Education and Research on Macromolecules (CERM), University of Liège, Sart-Tilman B6, BE-4000 Liège, Belgium, and Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan
| | - Herman Faes
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, BE-3001 Heverlee, Belgium, Center for Education and Research on Macromolecules (CERM), University of Liège, Sart-Tilman B6, BE-4000 Liège, Belgium, and Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan
| | - Serge Creutz
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, BE-3001 Heverlee, Belgium, Center for Education and Research on Macromolecules (CERM), University of Liège, Sart-Tilman B6, BE-4000 Liège, Belgium, and Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan
| | - Kenji Tsuda
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, BE-3001 Heverlee, Belgium, Center for Education and Research on Macromolecules (CERM), University of Liège, Sart-Tilman B6, BE-4000 Liège, Belgium, and Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan
| | - Robert Jérôme
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, BE-3001 Heverlee, Belgium, Center for Education and Research on Macromolecules (CERM), University of Liège, Sart-Tilman B6, BE-4000 Liège, Belgium, and Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan
| | - Hiroshi Masuhara
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, BE-3001 Heverlee, Belgium, Center for Education and Research on Macromolecules (CERM), University of Liège, Sart-Tilman B6, BE-4000 Liège, Belgium, and Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan
| | - Frans C. De Schryver
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, BE-3001 Heverlee, Belgium, Center for Education and Research on Macromolecules (CERM), University of Liège, Sart-Tilman B6, BE-4000 Liège, Belgium, and Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan
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