Efficient NIR-I fluorescence photoswitching based on giant fluorescence quenching in photochromic nanoparticles
Shinya Yamasaki1, Sanae Ishida1, Sunnam Kim1
1Department of Applied Chemistry & Biochemistry, Graduate School of Science & Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan. tuyoshi@kumamoto-u.ac.jp.
Abstract:
A photoswitchable near-infrared (NIR) fluorescent nanoparticle (NP) was designed and prepared. The NP showed a characteristic AIE property and high-contrast NIR fluorescence photoswitching with full reversibility. Such efficient NIR fluorescence photoswitching originated from the amplified fluorescence quenching mechanism based on intermolecular energy transfer in a densely packed NP state.
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