Journal
MOLECULAR IMAGING AND BIOLOGY
Volume 23, Issue 2, Pages 160-172Publisher
SPRINGER
DOI: 10.1007/s11307-020-01545-1
Keywords
NIR-II fluorescence imaging; Organic NIR-II fluorophores; Optical properties; NIR-II imaging functions; Molecular imaging
Funding
- National Natural Science Foundation of China [81671745]
- Suzhou key industry technology innovation project [SYG201912]
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NIR-II fluorescence imaging shows promising applications in in vivo imaging, but organic NIR-II fluorophores currently have limitations in imaging performance that require further research and improvement.
Near-infrared (NIR) fluorescence imaging (FI) has become a research hotspot because of its distinctive imaging properties: high temporal resolution and sensitivity. Especially in recent years, with the research focus of NIR FI shifting to the NIR-II region, which has better imaging performance, it is expected that NIR FI will find significant applications in the field ofin vivoimaging. One of the most crucial directions for research into NIR-II FI is the promotion of novel NIR-II fluorophores with superior imaging properties. The remarkable advantages of organic NIR-II fluorophores in biosafety make them more promising than other fluorescent materials in certain applications. But serious defects in their fluorescence performance preclude particular imaging effects and limit imaging functions. In this review, we summarize and discuss the recent leading literature on overcoming the defects of organic NIR-II fluorophores, demonstrating the potential for further improving their imaging properties. In addition, we cover the functions of NIR-II FI that are promoted by the development of fluorophores, notably including its outlook on molecular imagingin vivo.
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