Abstract：
:Fluorescence imaging in the second near-infrared window (NIR-II) allows visualization of deep anatomical features with an unprecedented degree of clarity. NIR-II fluorophores draw from a broad spectrum of materials spanning semiconducting nanomaterials to organic molecular dyes, yet unfortunately all water-soluble organic molecules with >1,000 nm emission suffer from low quantum yields that have limited temporal resolution and penetration depth. Here, we report tailoring the supramolecular assemblies of protein complexes with a sulfonated NIR-II organic dye (CH-4T) to produce a brilliant 110-fold increase in fluorescence, resulting in the highest quantum yield molecular fluorophore thus far. The bright molecular complex allowed for the fastest video-rate imaging in the second NIR window with ∼50-fold reduced exposure times at a fast 50 frames-per-second (FPS) capable of resolving mouse cardiac cycles. In addition, we demonstrate that the NIR-II molecular complexes are superior to clinically approved ICG for lymph node imaging deep within the mouse body.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Antaris AL,Chen H,Diao S,Ma Z,Zhang Z,Zhu S,Wang J,Lozano AX,Fan Q,Chew L,Zhu M,Cheng K,Hong X,Dai H,Cheng Zdoi
10.1038/ncomms15269subject
Has Abstractpub_date
2017-05-19 00:00:00pages
15269issn
2041-1723pii
ncomms15269journal_volume
8pub_type
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