Abstract
Second harmonic generation experiments were carried out with a Langmuir film of the new amphiphilic coordination compound pentacyano(4-octadecylaminopyridine)ferrate(III) (POF), whose push-pull hydrophilic structure presents a visible-range ligand-to-metal charge-transfer (LMCT) transition. No significant variations of the molecular tilt angle were observed during the compression process; the hyperpolarizability is determined to be β z′z′z′ =172×10−30 esu. A qualitative analysis based on a two level model suggests that this large value originates from a large difference between excited state and ground state dipole moments and from a small transition energy close to resonance conditions.
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Armand, F., Sakuragi, H., Tokumaru, K. et al. Second harmonic generation in a Langmuir monolayer of the new amphiphilic coordination compound pentacyano(4-octadecylaminopyridine)-ferrate(III). Mol Eng 2, 315–324 (1993). https://doi.org/10.1007/BF00999820
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DOI: https://doi.org/10.1007/BF00999820