Journal
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Volume 408, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2020.113094
Keywords
Photoimmunotherapy; Silicon phthalocyanine; Intersystem crossing quantum yield; Fluorescence correlation spectroscopy; Triplet state
Categories
Funding
- JST-PRESTO [JPMJPR15P5]
- JSTCREST [JPMJCR1902]
- Tokyo Biochemical Research Foundation
- Japan Society for Promotion of Science (JSPS) [16 K K0156]
- JSPS [18K06201]
- Canon Foundation
- Japan Science and Technology Agency (JST) Competitive Funding Program for Adaptable and Seamless Technology Transfer Program through Targetdriven RD (A-STEP) [VP30318089120]
- Grants-in-Aid for Scientific Research [18K06201] Funding Source: KAKEN
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In this study, the intersystem crossing quantum yield (Phi(ISC)) of a silicon phthalocyanine derivatized from IRDye700DX (IR700) was evaluated using fluorescence correlation spectroscopy (FCS). The calculated Phi(ISC) was 0.019 +/- 0.002, and the FCS measurement was validated through experiments with potassium iodide.
Herein, we evaluated the intersystem crossing quantum yield (Phi(ISC)) of a silicon phthalocyanine derivatized from IRDye700DX (IR700) which is used as a photosensitizer for photoimmunotherapy (PIT), using fluorescence correlation spectroscopy (FCS). The calculated Phi(ISC) was 0.019 +/- 0.002. The FCS measurement was validated by experiment in the presence of potassium iodide, which can change the kinetics of the relaxation process in the excited state.
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