scholarly journals Structural effects on the circular dichroism of ethidium ion nucleic acid complexes

Biochemistry ◽  
1982 ◽  
Vol 21 (11) ◽  
pp. 2730-2737 ◽  
Author(s):  
Kenneth S. Dahl ◽  
Arthur Pardi ◽  
Ignacio Tinoco
Keyword(s):  
Circular Dichroism ◽  
Nucleic Acid ◽  
Structural Effects ◽  
Circular Dichroïsm

scholarly journals Optical Chirality Determined from Mueller Matrices

2021 ◽  
Vol 11 (15) ◽  
pp. 6742
Author(s):  
Hans Arwin ◽  
Stefan Schoeche ◽  
James Hilfiker ◽  
Mattias Hartveit ◽  
Kenneth Järrendahl ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Constitutive Relations ◽  
Mueller Matrix ◽  
Optical Path ◽  
Electromagnetic Modeling ◽  
Structural Effects ◽  
Polarization Effects ◽  
Optical Chirality ◽  
Mueller Matrices ◽  
Circular Dichroïsm

Optical chirality, in terms of circular birefringence and circular dichroism, is described by its electromagnetic and magnetoelectric material tensors, and the corresponding optical activity contributes to the Mueller matrix. Here, spectroscopic ellipsometry in the spectral range 210–1690 nm is used to address chiral phenomena by measuring Mueller matrices in transmission. Three approaches to determine chirality parameters are discussed. In the first approach, applicable in the absence of linear polarization effects, circular birefringence and circular dichroism are evaluated directly from elements of a Mueller matrix. In the second method, differential decomposition is employed, which allows for the unique separation of chirality parameters from linear anisotropic parameters as well as from depolarization provided that the sample is homogeneous along the optical path. Finally, electromagnetic modeling using the Tellegen constitutive relations is presented. The last method also allows structural effects to be included. The three methods to quantify optical chirality are demonstrated for selected materials, including sugar solutions, α-quartz, liquid crystals, beetle cuticle, and films of cellulose nanocrystals.

Circular dichroism of the nucleic acid monomers

Biopolymers ◽  
1977 ◽  
Vol 16 (10) ◽  
pp. 2243-2264 ◽  
Author(s):  
Cindy A. Sprecher ◽  
W. Curtis Johnson
Keyword(s):  
Circular Dichroism ◽  
Nucleic Acid ◽  
Circular Dichroïsm

Biophysical and Structural Characterisation of Nucleic Acid Complexes with Modified Cyclodextrins Using Circular Dichroism

2014 ◽  
Vol 103 (5) ◽  
pp. 1346-1355 ◽  
Author(s):  
Aoife M. O'Mahony ◽  
Michael F. Cronin ◽  
Anthony Mcmahon ◽  
James C. Evans ◽  
Kathleen Daly ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Nucleic Acid ◽  
Structural Characterisation ◽  
Modified Cyclodextrins ◽  
Circular Dichroïsm
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