Crystal Growth and Chirality - Technologies and Applications 2023
DOI: 10.5772/intechopen.108721
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Chiroptical Studies on Anisotropic Condensed Matter: Principle and Recent Applications of the Generalized-High Accuracy Universal Polarimeter

Abstract: Chiroptics is the study of the changes in circular polarization states of light transmitted through analytes typically dissolved in isotropic solutions. However, experimental challenges have long prevented chiroptical measurements of anisotropic media such as single crystals of low symmetry, liquid crystals, or structured films. The high accuracy universal polarimeter (HAUP) was introduced in 1983 to investigate the differential refraction of left and right circular polarization states, circular birefringence … Show more

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Cited by 3 publications
(4 citation statements)
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“…Increasingly, chiroptics has extended its purview to organized systems where the wave vector of the incident light mixes the moments in some directions. 33,[38][39][40][41][42][43][44][45] The scalar product of cross products of the wave vector and the transition dipole moments determines the sign of the response in oriented systems. These values are equal and opposite for some optically active, non-enantiomorphous point groups.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Increasingly, chiroptics has extended its purview to organized systems where the wave vector of the incident light mixes the moments in some directions. 33,[38][39][40][41][42][43][44][45] The scalar product of cross products of the wave vector and the transition dipole moments determines the sign of the response in oriented systems. These values are equal and opposite for some optically active, non-enantiomorphous point groups.…”
Section: Discussionmentioning
confidence: 99%
“…m is proportional to optical activity only applies to the spatial average measured for molecules rapidly randomly reorienting. Increasingly, chiroptics has extended its purview to organized systems where the wave vector of the incident light mixes the moments in some directions 33,38–45 . The scalar product of cross products of the wave vector and the transition dipole moments determines the sign of the response in oriented systems.…”
Section: Discussionmentioning
confidence: 99%
“…To accurately measure the optical properties of TD in the solid state, the specimens should be plate-like, transparent, and homogeneous single crystals with good parallelism of crystal surfaces. 26 However, growing such crystals is extremely difficult with any solvent−evaporation method. Although we have succeeded in preparing single racemic and enantiomeric crystals of TD suitable for crystallographic analysis, these crystals unfortunately failed to meet the requirements for accurate measurement of the optical properties of solid-state TD, and needle-like crystals were obtained by solvent evaporation.…”
Section: ■ Introductionmentioning
confidence: 99%
“…However, the physicochemical properties of solid-state TD have not been sufficiently investigated, and the measurement of the chiroptical properties of TD has been completely limited to the solution state so far. To accurately measure the optical properties of TD in the solid state, the specimens should be plate-like, transparent, and homogeneous single crystals with good parallelism of crystal surfaces . However, growing such crystals is extremely difficult with any solvent–evaporation method.…”
Section: Introductionmentioning
confidence: 99%