Color‐Change Photoswitching of an Alkynylpyrene Excimer Dye
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 05, 2017
- Source ID
- 10.1002/ange.201701235
Entities
People
- Dominik K. Kölmel
- Eric T. Kool
- Ke Min Chan
- Shenliang Wang
Organizations
- Army Research Office
- National Institutes of Health
- Stanford University