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Creators/Authors contains: "Hwang, Jungwun"

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  1. Substituent–π interactions associated with aromatic stacking interactions were experimentally measured using a small N -phenylimide molecular balance model system. The direct interaction of the substituent (NH 2 , CH 3 , OH, F, Br, CF 3 and NO 2 ) with an aromatic ring was measured in the absence of the aromatic stacking interactions in solution. The measured substituent–π energies were found to correlate well with the Hammett σ m parameter similar to the substituent effects observed in aromatic stacking systems. The persistent electrostatic trends in substituent effects can arise from the direct electrostatic interactions between substituents and opposing π-systems. 
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