Searching for Models Exhibiting High Circularly Polarized Luminescence: Electroactive Inherently Chiral Oligothiophenes
作者： Tiziana Benincori , Giulio Appoloni , Patricia Romana Mussini , Serena Arnaboldi , Roberto Cirilli
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摘要: Two new inherently chiral oligothiophenes characterized by the atropisomeric 3,3'-bithianaphtene scaffold functionalized with fused ring bithiophene derivatives, namely 4H-cyclopenta[2,1-b3:4b']dithiophene (CPDT) and dithieno[3,3-b:2',3'-d]pyrrole (DTP), were synthesized. The racemates fully resolved into antipodes enantioselective HPLC. enantiomers analyzed through different chiroptical techniques: electronic circular dichroism (ECD) vibrational (VCD) employed to attribute absolute configuration (AC). Comparison of experimental calculated VCD spectra confirmed DFT conformational characteristics. compound two CPDT units was oxidized FeCl3 , ECD CPL resulting material measured. Circularly polarized luminescence (CPL) measured verify if could be promising systems for photonics applications.
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