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Two-photon cross-sections of the photosensitizers m-THPC and m-THPP in the 1.05–1.45 μm range

Paper ID Volume ID Publish Year Pages File Format Full-Text
26500 43956 2014 4 PDF Available
Title
Two-photon cross-sections of the photosensitizers m-THPC and m-THPP in the 1.05–1.45 μm range
Abstract

•The open-aperture z-scan technique is applied to measure two-photon absorption.•The studied tumor photosensitizers show good two-photon absorption at 1.05–1.45 μm.•The two-photon absorption is lower for circular than for linear polarized light.

The two-photon absorption of the photosensitizers 5,10,15,20-tetrakis(m-hydroxyphenyl) porphyrin and the corresponding chlorin has been studied in the near infrared (IR) range using open-aperture z-scan technique. We found cross sections of 10–40 GM in the Q-band region, comparable to values in the Soret-band. Both photosensitizers are promising candidates for IR two-photon photodynamic therapy given the better penetration of IR light into tissue.

Keywords
Two-photon absorption; z-scan; Tumor photosensitizer; Near IR; Cross section
First Page Preview
Two-photon cross-sections of the photosensitizers m-THPC and m-THPP in the 1.05–1.45 μm range
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 295, 1 December 2014, Pages 53–56
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering