Optically active triptycenes containing hexa-peri-hexabenzocoronene units

2019 ◽  
Vol 55 (76) ◽  
pp. 11386-11389 ◽  
Author(s):  
Yuya Wada ◽  
Ken-ichi Shinohara ◽  
Tomoyuki Ikai
Keyword(s):  
Polarized Light ◽  
Optically Active ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Left And Right

We have successfully generated both left- and right-handed circularly polarized light using crystals prepared from a racemic triptycene containing hexa-peri-hexabenzocoronene units.

scholarly journals Synthesis and efficient circularly polarized light emission of an optically active hyperbranched poly(fluorenevinylene) derivative

2011 ◽  
Vol 47 (13) ◽  
pp. 3799 ◽  
Author(s):  
Juin-Meng Yu ◽  
Takeshi Sakamoto ◽  
Kento Watanabe ◽  
Seiichi Furumi ◽  
Nobuyuki Tamaoki ◽  
...  
Keyword(s):  
Light Emission ◽  
Polarized Light ◽  
Optically Active ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Hyperbranched Poly

Preparation of Chiral Polydiacetylene Films by Using Three-Photon Polymerization

2016 ◽  
Vol 16 (4) ◽  
pp. 3394-3397 ◽  
Author(s):  
Takaaki Manaka ◽  
Mitsumasa Iwamoto
Keyword(s):  
Laser Power ◽  
Polarized Light ◽  
Laser Wavelength ◽  
Polymerization Rate ◽  
Power Dependence ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Photo Polymerization ◽  
Left And Right ◽  
Asymmetric Polymerization

Asymmetric polymerization of polydiacetylene (PDA) from commercially available achiral derivative of diacetylene monomer using circularly polarized pulse laser is demonstrated. Chiral source was only circularly polarized laser, and irradiation of left- and right-circularly polarized light effectively promoted the polymerization of chiral PDAs with opposite handedness. Difference between the laser wavelength and the absorption peak of monomer suggested the contribution of the multiphoton excitation to the photo-polymerization. Laser power dependence of the polymerization rate indicated the possibility of three-photon polymerization.

Photochemistry with circularly polarized light. Synthesis of optically active hexahelicene

1971 ◽  
Vol 93 (9) ◽  
pp. 2353-2354 ◽  
Author(s):  
Henri Kagan ◽  
A. Moradpour ◽  
J. F. Nicoud ◽  
Gilbert Balavoine ◽  
G. Tsoucaris
Keyword(s):  
Polarized Light ◽  
Optically Active ◽  
Circularly Polarized Light ◽  
Circularly Polarized

scholarly journals Predominantly left-handed circular polarization in comets: Does it indicate L-enantiomeric excess in cometary organics?

2008 ◽  
Vol 4 (S251) ◽  
pp. 311-312 ◽  
Author(s):  
V. Rosenbush ◽  
N. Kiselev ◽  
L. Kolokolova
Keyword(s):  
Light Scattering ◽  
Circular Polarization ◽  
Enantiomeric Excess ◽  
Polarized Light ◽  
Optically Active ◽  
Active Materials ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Cometary Dust ◽  
Left Handed

AbstractPolarimetric observations demonstrated that all comets with significant values of circular polarization show predominantly left–handed circularly polarized light. We discuss the presence of homochiral organics in cometary materials as a source of the observed circular polarization. We have studied the effect of chirality on light–scattering properties of cometary dust considering particles that possess optical activity. Our investigations show that the cometary dust may include optically active materials which can be prebiological homochiral organics.

Switchable 3D liquid crystal grating generated by periodic photo-alignment on both substrates

Soft Matter ◽  
2015 ◽  
Vol 11 (39) ◽  
pp. 7802-7808 ◽  
Author(s):  
I. Nys ◽  
J. Beeckman ◽  
K. Neyts
Keyword(s):  
Liquid Crystal ◽  
Diffraction Pattern ◽  
Polarized Light ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Left And Right ◽  
Photo Alignment ◽  
Alignment Layers ◽  
Liquid Crystal Grating

A planar liquid crystal (LC) cell is developed in which two photo-alignment layers have been illuminated with respectively a horizontal and a vertical diffraction pattern of interfering left- and right-handed circularly polarized light.

Optically Active Covalent Organic Frameworks and Hyperbranched Polymers with Chirality Induced by Circularly Polarized Light

2021 ◽  
Author(s):  
Yuting Wang ◽  
Koji Yazawa ◽  
Qingyu Wang ◽  
Takunori Harada ◽  
Shuhei SHIMODA ◽  
...  
Keyword(s):  
Polarized Light ◽  
Hyperbranched Polymers ◽  
Optically Active ◽  
Covalent Organic Frameworks ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Axial Chirality

Axial chirality was induced by circularly polarized light (CPL) irradiation to insoluble polymeric covalent organic frameworks (COF’s) as well as soluble hyperbranched polymers (HBP’s) composed of bezene-1,3,5-triyl groups as trigonal...

Sign in / Sign up

Export Citation Format

Share Document