Bright and Stable NIR-II J-Aggregated AIE Dibodipy-Based Fluorescent Probe for Dynamic Inâ
Vivo Bioimaging.
Angew Chem Int Ed Engl
; 60(8): 3967-3973, 2021 02 19.
Article
em En
| MEDLINE
| ID: mdl-32969119
ABSTRACT
Organic dyes emitting in the second near-infrared (NIR-II, 900-1700â
nm) window, with high molar extinction coefficients (MEC) and quantum yields (QY) in aqueous, are essential for inâ
vivo bioimaging and biosensing. In this work, we developed a dibodipy-based aggregation-induced emission (AIE) fluorescent probe, THPP, to meet this aim. THPP exhibits a high MEC and has intensified absorption and emission in J-aggregated state, which significantly enhance the fluorescence intensity (≈55 folds) and extend the maximal absorption/emission wavelengths to 970/1010â
nm in NIR-II region. Based on the bright THPP, imaging with a high frame rate (34 frames per second) at a deep "valid penetration depth" up to 6â
mm can be achieved. This enabled simultaneous and dynamic imaging of vasculatures and deep tissues. Besides, we succeeded in monitoring the respiratory rate of acute-lung-injury mice and tracing the collateral circulation process with a high frame rate.
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MEDLINE
Assunto principal:
Propiofenonas
/
Imagem Óptica
/
Corantes Fluorescentes
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article