2004
DOI: 10.1002/cphc.200300959
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Molecular Origins of the Remarkable Chiral Sensitivity of Second‐Order Nonlinear Optics

Abstract: Recent observations of remarkably large chiroptical effects in second-harmonic generation (SHG) and sum-frequency generation (SFG) measurements suggest exciting possibilities for the development of new chiral-specific spectroscopies and novel chiral materials for nonlinear optics. Several fundamental studies designed to elucidate the molecular and macromolecular origins of the chiral responses are reviewed to provide a framework for development of this emerging field. In general, the chiral activity in SHG and… Show more

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Cited by 132 publications
(181 citation statements)
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“…According to the peak assignments of secondary structures of proteins, the peaks at 1,630 and 1,690 cm Ϫ1 should be contributed from ␤-sheet structures (66 -69). We believe that this characteristic must be due to the fact that ␤-sheet structures can more easily have ordered twist angles at the interface, thereby generating strong chiral signals for some vibrational modes, as suggested by Simpson and coworkers (35,36). Our work here clearly indicates that the chiral SFG spectra should provide further structural information about interfacial fibrinogen molecules.…”
Section: Chiral Sfg Vibrational Spectra Of Adsorbed Fibrinogen Obtainsupporting
confidence: 72%
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“…According to the peak assignments of secondary structures of proteins, the peaks at 1,630 and 1,690 cm Ϫ1 should be contributed from ␤-sheet structures (66 -69). We believe that this characteristic must be due to the fact that ␤-sheet structures can more easily have ordered twist angles at the interface, thereby generating strong chiral signals for some vibrational modes, as suggested by Simpson and coworkers (35,36). Our work here clearly indicates that the chiral SFG spectra should provide further structural information about interfacial fibrinogen molecules.…”
Section: Chiral Sfg Vibrational Spectra Of Adsorbed Fibrinogen Obtainsupporting
confidence: 72%
“…36 and references therein). Some experimental results can be interpreted by magnetic-dipole contributions and͞or interference between electric and magnetic-dipole contributions.…”
mentioning
confidence: 99%
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“…Thanks to the work of many researchers the method has evolved from an exotic tool, used by only a few devoted laser experts to study model systems, to a tool that can be used by many for a diverse number of applications. Nowadays a large number of research groups are using vibrational SFG to probe such diverse aspects as optical properties, [7,[10][11][12] structure, kinetics and dynamics [13,14] of solid/solid, solid/liquid, [5,15] solid/gas, [16,17] liquid/liquid, [18,19] liquid/gas interfaces [20][21][22] and chiral media and interfaces [23][24][25] (note that these references are all reviews).…”
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confidence: 99%
“…[48,49] A further interesting feature of nonlinear optical methods is that they are specific towards chirality. [23][24][25] In chemistry and biology most compounds consist of chiral building blocks (e.g. 21 of the 22 amino acids in the human body are chiral).…”
mentioning
confidence: 99%