Molecular light scattering and optical activity. Cambridge University Press 1983, xv + 408pp., £37.50

Barron, Laurence D.; Long, D. A.

doi:10.1002/jrs.1250140318

Cited by 218 publications

(393 citation statements)

References 0 publications

Supporting

Mentioning

386

Contrasting

Unclassified

Order By: Relevance

“…[1,8] These phenomena have been intensively investigated and are well understood. [1,2] Within the macroscopic chiral medium approach, the CD and ORD effects are proportional to the so-called chiral parameter, ξ c (ω). [38] Specifically…”

Section: Quantum Theory Of Molecular CDmentioning

confidence: 99%

Aluminum Nanoparticles with Hot Spots for Plasmon‐Induced Circular Dichroism of Chiral Molecules in the UV Spectral Interval

Besteiro

Zhang

Plain

et al. 2017

Advanced Optical Materials

View full text Add to dashboard Cite

absorb and scatter visible light and, furthermore, plasmonic NCs are known for their strong local enhancement of electromagnetic fields. When a chiral biomolecule is attached to a nonchiral metal NC, the chiral response of a biomolecule becomes transferred to the plasmonic NC via near-field dipolar and multipolar interactions. [4,5] Circular dichroism spectroscopy, which quantifies the difference between the assembly's responses to left and right circularly polarized light, is a well-established experimental method to measure the chiral properties of an assembly. In the biomolecule-NC assembly, CD spectra typically show modified molecular lines, in addition to including new lines coming from plasmon excitations in the NCs. It was demonstrated in a large number of experiments [3,6,7] that it is possible to observe plasmon-induced CD in the visible spectral interval using NCs made of gold and silver. It is a very interesting possibility, since the original CD signals of important biomolecules (such as proteins and DNA) are typically in the UV spectral region. In addition to the material composition of an assembly, its design also plays an important role. For example, the plasmoninduced CD can be strongly enhanced by using NC assemblies Plasmonic nanocrystals with hot spots are able to localize optical energy in small spaces. In such physical systems, near-field interactions between molecules and plasmons can become especially strong. This paper considers the case of a nanoparticle dimer and a chiral biomolecule. In this model, a chiral molecule is placed in the gap between two plasmonic nanoparticles, where the electromagnetic hot spot occurs. Since many important biomolecules have optical transitions in the UV spectral region, the case of aluminum nanoparticles is considered, as they offer strong electromagnetic enhancements in the blue and UV spectral intervals. The calculations in this study show that the complex composed of a chiral molecule and an Al dimer exhibits strong circular dichroism (CD) signals in the plasmonic spectral region. In contrast to the standard Au and Ag nanocrystals, the Al system may have a much better spectral overlap between the typical biomolecule's optical transitions and the nanocrystals' plasmonic band. Overall, it is found that Al nanocrystals used as CD antennas exhibit unique properties as compared to other commonly studied plasmonic and dielectric materials. The plasmonic systems investigated in this study can be potentially used for sensing chirality of biomolecules, which is of interest in applications such as drug development.

show abstract

Section: Quantum Theory Of Molecular CDmentioning

confidence: 99%

Aluminum Nanoparticles with Hot Spots for Plasmon‐Induced Circular Dichroism of Chiral Molecules in the UV Spectral Interval

Besteiro

Zhang

Plain

et al. 2017

Advanced Optical Materials

View full text Add to dashboard Cite

show abstract

“…Optical chirality plays an important role in the optical sensing of biomolecules (see, e.g., [1]) and the interaction of light with chiral nanostructures or metamaterials [2]. The nonreciprocity in transmission or circular dichroism measures the chiral effects in the interaction of the optical field with the specimen.…”

Section: Introductionmentioning

confidence: 99%

Characterizing optical chirality

2011

View full text Add to dashboard Cite

We examine the recently introduced measure of chirality of a monochromatic optical field [Y. Tang and A. E. Cohen, Phys. Rev. Lett. 104, 163901 (2010)] using the momentum (plane-wave) representation and helicity basis. Our analysis clarifies the physical meaning of the measure of chirality and unveils its close relation to the polarization helicity, spin angular momentum, energy density, and Poynting energy flow. We derive the operators of the optical chirality and of the corresponding chiral momentum, which acquire remarkably simple forms in the helicity representation.

show abstract

“…One manifestation of this optical activity is circular dichroism (CD), i.e., light absorption in such material is sensitive to the handedness of the circular polarization. Such interaction is enantiometrically specific and depends on the structure of the chiral matter [1]. Polarization is associated with the spin angular momentum (SAM)of light.…”

Section: Introductionmentioning

confidence: 99%

Optical manipulation of matter-wave vortices: An analog of circular dichroism

2015

View full text Add to dashboard Cite

The transfer of orbital angular momentum from an optical vortex to an atomic Bose-Einstein condensate changes the vorticity of the condensate. The spatial mismatch between initial and final center-of-mass wavefunctions of the condensate influences significantly the two-photon optical dipole transition between corresponding states. We show that the transition rate depends on the handedness of the optical orbital angular momentum leading to optical manipulation of matter-wave vortices and circular dichroism-like effect. Based on this effect, we propose a method to detect the presence and sign of matter-wave vortex of atomic superfluids. Only a portion of the condensate is used in the proposed detection method leaving the rest in its initial state.

show abstract

Molecular light scattering and optical activity. Cambridge University Press 1983, xv + 408pp., £37.50

Cited by 218 publications

References 0 publications

Aluminum Nanoparticles with Hot Spots for Plasmon‐Induced Circular Dichroism of Chiral Molecules in the UV Spectral Interval

Aluminum Nanoparticles with Hot Spots for Plasmon‐Induced Circular Dichroism of Chiral Molecules in the UV Spectral Interval

Characterizing optical chirality

Optical manipulation of matter-wave vortices: An analog of circular dichroism

Contact Info

Product

Resources

About