Masashi Hasegawa

Adsorption of Chiral Ir(III) Complexes on Clay Nanosheets: Optical-Purity-Dependent Packing and Amplified Circularly Polarized Luminescence

Abstract Controlling the spatial distribution of photoluminescent molecules within constrained microenvironments remains a fundamental challenge in enhancing their photophysical properties. Herein, we demonstrate that the differential adsorption behavior of enantiopure and racemi...

Synthesis, Structures, and Properties of Cyclopenta‐Fused Anthra[1,2‐ a ]anthracene Derivatives as New Polycyclic Aromatic Compounds

Three new cyclopenta-fused (CP) polycyclic aromatic compounds were synthesized from anthra[1,2-a]anthracenes by direct C─C bond formation in the internal region by Scholl reaction or by benzo fusion at the external corner through Pd-catalyzed cyclization. X-ray analysis and DFT c...

Circularly Polarized Electroluminescence and Spin‐Polarized Carrier Transport in Chiral‐Doped Polymer Films

ABSTRACT Circularly polarized electroluminescence (CPEL) based on spin‐dependent light emission is of considerable interest for functional chiral optoelectronics and spin‐photonic applications. Here we report CPEL from devices incorporating achiral poly(9,9‐dioctylfluorene) (PFO)...

Non‐Covalent PL, CD, and CPL Activation of Linear Aromatic Oligomers within Axially Chiral Aromatic Capsules

ABSTRACT Covalent functionalization is requisite to enhancing/inducing the luminescent and chiroptical properties of oligo‐aromatic compounds, owing to their rigid framework and strong aggregation characters. Here we report that linear aromatic oligomers display intense PL, CD, a...