基于光致变色纳米粒子中荧光猝灭的高效近红外 I 区荧光光开关。
Efficient NIR-I fluorescence photoswitching based on giant fluorescence quenching in photochromic nanoparticles.
机构信息
Department of Applied Chemistry & Biochemistry, Graduate School of Science & Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
Division of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan.
出版信息
Chem Commun (Camb). 2021 Jun 1;57(44):5422-5425. doi: 10.1039/d1cc01389k.
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.
设计并制备了一种光致变色近红外（NIR）荧光纳米粒子（NP）。该 NP 表现出特征的聚集诱导发光（AIE）性质和高对比度的近红外荧光光致开关性能，具有完全的可逆性。这种高效的近红外荧光光致开关源于基于分子间能量转移的放大荧光猝灭机制，发生在密集堆积的 NP 状态下。
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