Color-Change Photoswitching of an Alkynylpyrene Excimer Dye.
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ABSTRACT:
SUBMITTER: Chan KM
PROVIDER: S-EPMC5665017 | biostudies-literature | 2017 Jun
REPOSITORIES: biostudies-literature
Publications
Color-Change Photoswitching of an Alkynylpyrene Excimer Dye.
Chan Ke Min KM Kölmel Dominik K DK Wang Shenliang S Kool Eric T ET
Angewandte Chemie (International ed. in English) 20170505 23
We describe a photoswitchable DNA-based dimeric dye that visibly changes fluorescence from green to blue upon UV irradiation. A novel bis-alkyne-dependent [2+2+2] cycloaddition is proposed as a mechanism for the color change in air. The photoinduced structural switching results in spatial separation of stacked pyrene units, thereby causing selective loss of the excimer emission. We demonstrate and suggest several applications for this novel photoswitch. ...[more]
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