Journal
NATURE COMMUNICATIONS
Volume 10, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-019-08722-z
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Funding
- National Science Foundation of China [51622305, 51873092, 21788102]
- Innovation and Technology Commission [ITC-CNERC14SC01, ITS/254/17]
- National Basic Research Program of China (973 Program) [2015CB856503]
- Research Grants Council of Hong Kong [16305015, 16308016, A-HKUST605/16, C2014-15G, C6009-17G]
- Shenzhen Science and Technology Program [JCYJ20160229205601482, JCYJ20160509170535223]
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The exciting applications of molecular motion are still limited and are in urgent pursuit, although some fascinating concepts such as molecular motors and molecular machines have been proposed for years. Utilizing molecular motion in a nanoplatform for practical application has been scarcely explored due to some unconquered challenges such as how to achieve effective molecular motion in the aggregate state within nanoparticles. Here, we introduce a class of near infrared-absorbing organic molecules with intramolecular motion-induced photothermy inside nanoparticles, which enables most absorbed light energy to dissipate as heat. Such a property makes the nanoparticles a superior photoacoustic imaging agent compared to widely used methylene blue and semiconducting polymer nanoparticles and allow them for high-contrast photoacoustic imaging of tumours in live mice. This study not only provides a strategy for developing advanced photothermal/photoacoustic imaging nanoagents, but also enables molecular motion in a nanoplatform to find a way for practical application.
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