作者:Leanne Beer、Robert C. Haddon、Mikhail E. Itkis、Alicea A. Leitch、Richard T. Oakley、Robert W. Reed、John F. Richardson、Donald G. VanderVeer
DOI:10.1039/b417236a
日期:——
The resonance stabilized bis-thiadiazinyl framework holds potential as a stable and versatile building block for the design of radical-based conductors and magnetic materials.
共振稳定的双噻二嗪基框架作为一种稳定而多用途的构件,具有设计基于自由基的导体和磁性材料的潜力。
Fluorescent Modular Boron Systems Based on NNN- and ONO-Tridentate Ligands: Self-Assembly and Cell Imaging
作者:Christoph Glotzbach、Ulrike Kauscher、Jens Voskuhl、N. Seda Kehr、Marc C. A. Stuart、Roland Fröhlich、Hans J. Galla、Bart Jan Ravoo、Kazuhiko Nagura、Shohei Saito、Shigehiro Yamaguchi、Ernst-Ulrich Würthwein
DOI:10.1021/jo4003745
日期:2013.5.3
We have synthesized a series of new fluorescent boron systems 1a-c and 2a-d based on nitrogen (NNN) or nitrogen and oxygen (ONO)-containing tridentate ligands. These novel dyes are characterized by high thermal and chemical stability. They show large Stokes shifts (mostly above 3200 cm(-1)) and quantum yields in solution and in the solid state up to 40%. The easy, modular synthesis facilitates the convenient variation of the axial substituent on the central boron atom, allowing the functionalization of this dye for biochemical use. Introducing a long alkyl chain with a phenyl spacer at this axial position enables the self-assembly of the boron compound 2d to form a fluorescent vesicle, which is able to encapsulate small molecules such as sulforhodamine. Additionally, boron compound 2d was found to serve as a dye for cell imaging since it has the capability of binding to the nuclear membranes of HeLa cells. With phospholipids such as DOPC, giant unilamelar vesicles (GUV) are formed. These results demonstrate the wide applicability of this new boron system in supramolecular and medicinal chemistry.