articleJournal of the American Chemical SocietyAug 10, 2022Closed access

Rational Design of NIR-II AIEgens with Ultrahigh Quantum Yields for Photo- and Chemiluminescence Imaging

HSHanchen ShenFSFeiyi SunXZXinyan ZhuJZJianyu ZhangXOXinwen Ou

Hong Kong University of Science and Technology · University of Hong Kong · +4 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

Fluorescence imaging in the second near-infrared window (NIR-II, 1000-1700 nm) using small-molecule dyes has high potential for clinical use. However, many NIR-II dyes suffer from the emission quenching effect and extremely low quantum yields (QYs) in the practical usage forms. The AIE strategy has been successfully utilized to develop NIR-II dyes with donor-acceptor (D-A) structures with acceptable QYs in the aggregate state, but there is still large room for QY improvement. Here, we rationally designed a NIR-II emissive dye named TPE-BBT and its derivative (TPEO-BBT) by changing the electron-donating triphenylamine unit to tetraphenylethylene (TPE). Their nanoparticles exhibited ultrahigh relative QYs of…

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262
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Topics & keywords

Topics
Keywords
  • Chemistry
  • Chemiluminescence
  • Aggregation-induced emission
  • Quantum yield
  • Luminescent Measurements
  • Rational design
  • Photochemistry
  • Nanotechnology
UN Sustainable Development Goals
  • Affordable and clean energy
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