Combining Aminocyanine Dyes with Polyamide Dendrons: A Promising Strategy for Imaging in the Near‐Infrared Region
作者:Cátia Ornelas、Rachelle Lodescar、Alexander Durandin、James W. Canary、Ryan Pennell、Leonard F. Liebes、Marcus Weck
DOI:10.1002/chem.201002268
日期:2011.3.21
Cyanine dyes are known for their fluorescence in the near‐IR (NIR) region, which is desirable for biological applications. We report the synthesis of a series of aminocyanine dyes containing terminal functional groups such as acid, azide, and cyclooctyne groups for further functionalization through, for example, click chemistry. These aminocyanine dyes can be attached to polyfunctional dendrons by copper‐catalyzed
花青染料以其在近红外(NIR)区域的荧光而闻名,这对于生物学应用而言是理想的。我们报告了一系列包含末端官能团(例如酸,叠氮化物和环辛炔基团)的氨基花青染料的合成,这些染料可通过例如单击化学进一步官能化。这些氨基花青染料可通过铜催化的叠氮炔炔环加成(SPAAC),应变促进的叠氮炔炔环加成(SPAAC),肽偶联或直接S NR连接到多官能树突上1反应。得到的树突-染料共轭物以高收率获得,并显示出高化学稳定性和光稳定性。通过UV / Vis和荧光光谱研究了新化合物的光学性质。所有化合物在NIR区域均显示出大的斯托克斯位移和强荧光,并具有高量子产率,这是体内光学成像的最佳性能。