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A critical spintronics challenge is to develop molecular wires that render efficiently spin-polarized currents. Interplanar torsional twisting, driven by chiral binucleating ligands in highly conjugated molecular wires, gives rise to large near-infrared rotational strengths. The large scalar product of the electric and magnetic dipole transition moments ( μ → i j ⋅ m → i j ), which are evident in the low-energy absorptive manifolds of these wires, makes possible enhanced chirality-induced spin selectivity–derived spin polarization. Magnetic-conductive atomic force microscopy experiments and spin-Hall devices demonstrate that these designs point the way to achieve high spin selectivity and large-magnitude spin currents in chiral materials.more » « less
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null (Ed.)Photoinduced electron transfer (ET) between electron donor (dimethylaniline) and acceptor (N-isopropyl-1,8-napthalimide) covalently linked by ethyne bridge is investigated by a mid-IR transient absorption spectroscopy and TD-DFT computations. We found that electronic and vibrational properties of the complex, including ET rate, depends strongly on the D-A torsion angle.more » « less
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Kubarych, Kevin ; Ogilvie, Jennifer (Ed.)Photoinduced electron transfer (ET) between electron donor (dimethylaniline) and acceptor (N-isopropyl-1,8-napthalimide) covalently linked by ethyne bridge is investigated by a mid-IR transient absorption spectroscopy and TD-DFT computations. We found that electronic and vibrational properties of the complex, including ET rate, depends strongly on the D-A torsion angle.more » « less
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