| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Outline of Final Research Achievements |
The effect of static/dynamic heterogeneities upon photophysico-chemical processes of fluorescent dyes in various environments were investigated using single-molecule spectroscopy. Consequently, 1) a 10-fold increase in the photostability of the anthracene-based guest due to supramolecular encapsulation was demonstrated. Furthermore, this complex is >30-fold more photostable than rhodamine 6G, 2) an entire picture of heterogeneous photo-induced charge transfer dynamics of single perylenediimide (PDI) molecules in a polymer matrix was revealed, and 3) the photo-induced reaction dynamics occurring in the system of PDI molecules embedded in γ-cyclodextrin (γCD) films were examined. The analyses of fluorescence blinking statistics and theoretical calculations suggest that the hydrogen atom transfer reaction probably occurs between PDI and γCD via higher-lying triplet n,π* states of PDI.
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