Details

Autor(en) / Beteiligte

• Ma, Zetong
• Winands, Thorsten
• Liang, Ningning
• Meng, Dong
• Jiang, Wei
• Doltsinis, Nikos L.
• Wang, Zhaohui

Titel

A C2-symmetric triple [5]helicene based on N-annulated triperylene hexaimide for chiroptical electronics

Ist Teil von

• Science China. Chemistry, 2020-02, Vol.63 (2), p.208-214

Ort / Verlag

Beijing: Science China Press

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Two diastereoisomers (NTPH-P and NTPH-T1) as a C 2 -symmetric triple [5]helicene based on N -annulated triperylene hexaimide were synthesized. Aided by nuclear magnetic resonance spectroscopy (NMR) and theoretical calculations, NTPH-P was assigned to three-blade propeller conformation while NTPH-T1 tended to exhibit twisted conformation with pyrrole ring fusing on a bowl-shaped PDI foil. Characterized by circular dichroism (CD) and circular polarized luminescence (CPL) measurements, the enantiomerically pure NTPH-P exhibited fairly good chiral activities both in the absorption and emission range with dissymmetry factors ∣g abs ∣ of 4.1×10 −3 and ∣g lum ∣ of 1.2×10 −3 . The diastereoisomers were further employed as acceptors for organic solar cells with distinct PCEs of 8.11% and 5.24% for NTPH-P and NTPH-T1 based devices, respectively, signifying the prospects in chiroptical electronics by designing molecularly defined aromatics.