Stereospecific Synthesis and Photophysical Properties of Propeller‐Shaped C(90)H(48) PAH

Herein, we have synthesized an enantiomerically pure propeller‐shaped PAH, C(90)H(48), possessing three [7]helicene and three [5]helicene subunits. This compound can be obtained in gram quantities in a straightforward manner. The photophysical and chiroptical properties were investigated using UV/Vi...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhang, Fangyuan, Michail, Evripidis, Saal, Fridolin, Krause, Ana‐Maria, Ravat, Prince
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6972628/
https://www.ncbi.nlm.nih.gov/pubmed/31742798
http://dx.doi.org/10.1002/chem.201904962
Descripción
Sumario:Herein, we have synthesized an enantiomerically pure propeller‐shaped PAH, C(90)H(48), possessing three [7]helicene and three [5]helicene subunits. This compound can be obtained in gram quantities in a straightforward manner. The photophysical and chiroptical properties were investigated using UV/Vis absorption and emission, optical rotation and circular dichroism spectroscopy, supported by DFT calculations. The nonlinear optical properties were investigated by two‐photon absorption measurements using linearly and circularly polarized light. The extremely twisted structure and packing of the homochiral compound were investigated by single‐crystal X‐ray diffraction analysis.

Ejemplares similares