scholarly journals On the factors influencing the chiroptical response of conjugated polymer thin films

2021 ◽  
Author(s):  
Beth Laidlaw ◽  
Julien Eng ◽  
Jessica Wade ◽  
Xingyuan Shi ◽  
Francesco Salerno ◽  
...  
Keyword(s):  
Thin Films ◽  
Circular Dichroism ◽  
Conjugated Polymers ◽  
Conjugated Polymer ◽  
Polymer Thin Films ◽  
Detailed Understanding ◽  
Factors Influencing ◽  
Chiral Phases ◽  
Circular Dichroïsm

Chiral phases induced in conjugated polymers are a promising approach to producing thin films with strong circular dichroism (CD) and circularly polarised (CP) luminescence. However, a detailed understanding towards the...

X‐ray magnetic circular dichroism studies of multilayered thin films of 3d transition metals (invited) (abstract)

1994 ◽  
Vol 75 (10) ◽  
pp. 5807-5807 ◽  
Author(s):  
D. Weller ◽  
M. G. Samant ◽  
J. Stöhr ◽  
Y. Wu ◽  
B. D. Hermsmeier ◽  
...  
Keyword(s):  
Thin Films ◽  
Circular Dichroism ◽  
Transition Metals ◽  
Magnetic Circular Dichroism ◽  
X Ray ◽  
Multilayered Thin Films ◽  
Circular Dichroïsm

Oriented conjugated polymer thin films for all optical switching applications

2005 ◽  
Author(s):  
Ileana Rau ◽  
Pierre-Alain Chollet ◽  
Francois Kajzar ◽  
Roberto Zamboni
Keyword(s):  
Thin Films ◽  
Conjugated Polymer ◽  
Optical Switching ◽  
Polymer Thin Films ◽  
All Optical ◽  
All Optical Switching

Annealing-Induced Circular Dichroism Enhancement in Luminescent Conjugated Polymers with an Intramolecular Stack Structure

2017 ◽  
Vol 50 (17) ◽  
pp. 6433-6438 ◽  
Author(s):  
Young-Jae Jin ◽  
Kyo-Un Seo ◽  
Young-Ghil Choi ◽  
Masahiro Teraguchi ◽  
Toshiki Aoki ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Conjugated Polymers ◽  
Induced Circular Dichroism ◽  
Circular Dichroïsm

Preparation of Polypeptide-Dye Multilayers by an Electrostatic Assembly Process

1994 ◽  
Vol 351 ◽  
Author(s):  
Thomas M. Cooper ◽  
L. Campbell Angela ◽  
Carol Noffsinger ◽  
Janelle Gunther-Greer ◽  
Robert L. Crane ◽  
...  
Keyword(s):  
Thin Films ◽  
Circular Dichroism ◽  
Glutamic Acid ◽  
Congo Red ◽  
Copper Phthalocyanine ◽  
Electrostatic Assembly ◽  
Amino Silane ◽  
Spectrum Characteristic ◽  
Circular Dichroïsm ◽  
Β Sheet

ABSTRACTTo develop novel optical thin films, we have prepared self-assembled polypeptide films by an electrostatic process. The films were placed on a glass slide previously silanized by an amino silane and given a positive charge by immersion in aqueous acid. Subsequent immersion of the slide in aqueous anionic solutions of either poly(L-glutamic acid), congo red, copper phthalocyanine tetrasulfonic acid or p-nitroaniline-modified poly(L-glutamic acid) resulted in deposition of the anions on the surface. Following anionic immersion, the slides were dipped into a cationic poly(L-lysine) solution. Alternate dipping into anionic and cationic solutions yielded multilayers. The thin films were characterized by optical absorption and circular dichroism. The optical density increased with dipping cycles. Circular dichroism measurements of the thin films showed induced dichroism of the congo red and phthalocyanine-containing films, suggesting formation of a locally ordered dye-polypeptide complex. Solution circular dichroism measurements of the polypeptides indicated a coil conformation, while poly(Lglutamic acid)/poly(L-lysine) complexes showed circular dichroism spectrum characteristic of a β-sheet.

Magnetic Structure of Multilayers from Soft-X-Ray Magnetic Circular Dichroism

1994 ◽  
Vol 375 ◽  
Author(s):  
C. T. Chen ◽  
Y. U. Idzerda ◽  
C.-C. Kao ◽  
L. H. Tjeng ◽  
H.-J. Lin ◽  
...  
Keyword(s):  
Thin Films ◽  
Circular Dichroism ◽  
Magnetic Circular Dichroism ◽  
Magnetic Thin Films ◽  
X Rays ◽  
X Ray ◽  
Specific Manner ◽  
Left And Right ◽  
The Difference ◽  
Circular Dichroïsm

AbstractSoft-x-ray magnetic circular dichroism (MCD) is the difference between the absorptivity or reflectivity of left and right circularly polarized soft-x-rays at the magnetically interesting L2,3- edges of 3d transition metals or the M4,5-edges of the 4f rare earth elements. Thanks to its large absorption cross-section and strong MCD effect, this technique has become a powerful new means for probing, in an element- and site-specific manner, the magnetic properties of ultra-thin films and multilayers. Soft-x-ray MCD experiments, recently conducted at the Dragon beamline, are utilized to demonstrate the recent progress in this technique and its applications in the research of magnetic thin films.

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