Helical Assemblies of One-Dimensional Supramolecular Polymers Composed of Helical Macromolecules: Generation of Circularly Polarized Light Using an Infinitesimal Chiral Source

2020 ◽  
Vol 142 (6) ◽  
pp. 3254-3261 ◽  
Author(s):  
Tomoyuki Ikai ◽  
Mitsuhiro Okubo ◽  
Yuya Wada
Keyword(s):  
Polarized Light ◽  
Supramolecular Polymers ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
One Dimensional

scholarly journals Direct detection of circular polarized light in helical 1D perovskite-based photodiode

2020 ◽  
Vol 6 (46) ◽  
pp. eabd3274
Author(s):  
A. Ishii ◽  
T. Miyasaka
Keyword(s):  
Direct Detection ◽  
Polarized Light ◽  
Organic Cations ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
One Dimensional ◽  
Left Handed ◽  
Plasmonic Metamaterials ◽  
Halide Perovskites ◽  
Lead Halide

Detection of circularly polarized light (CPL) has a high potential for development of various optical technologies. Conventional photodetectors require optical polarizers on the device to detect polarized light, and this causes substantial losses of sensitivity and resolution in light detection. Here, we report direct CPL detection by a photodiode using a helical one-dimensional (1D) structure of lead halide perovskites composed of naphthylethylamine-based chiral organic cations. The 1D structure with face-sharing (PbI6)4− octahedral chains whose helicity is largely affected by chiral cations shows intense circular dichroism (CD) signals over 3000 mdeg at 395 nm with the highly anisotropy factor (gCD) of 0.04. This high CD enables photocurrent detection with effective discrimination between left-handed and right-handed CPLs. The CPL detector based on this 1D perovskite achieved the highest polarization discrimination ratio of 25.4, which largely surpasses the direct detecting CPL devices (<4) using chiral plasmonic metamaterials and organic materials.

scholarly journals Generating Circularly Polarized Light from Clustering‐Triggered Emission Using Solid Phase Molecular Self-Assembly

2021 ◽  
Author(s):  
Peilong Liao ◽  
Shihao Zang ◽  
Tongyue Wu ◽  
Hongjun Jin ◽  
Wenkai Wang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Solid Phase ◽  
Polarized Light ◽  
Supramolecular Polymers ◽  
Mechanical Pressure ◽  
Renewable Materials ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
First Case ◽  
Surface Charge Distribution

Abstract Clustering-triggered emission (CTE) has displayed promising abilities in bioimaging, chemical sensing, and multicolor luminescence. However, it remains absent in the field of circularly polarized emission (CPL) due to the difficulties in well-aligning the nonconventional luminogens. We report the first case of CPL generated with CTE using the solid phase molecular self-assembly(SPMSA) of poly-L-lysine(PLL) and sodium oleate (OL). Under mechanical pressure, the electrostatic complex of PLL/OL form supramolecular film in which the OL ions self-assemble into lamellar mesophases bridged by the PLL chains. Since the OL mesophases are very alike giant 2D rigid supramolecular polymers with well-defined surface charge distribution, the PLL chains are forced to fold regularly as a requirement of optimal electrostatic interaction. Further facilitated by hydrogen bonding, the O and N atoms that form through space conjugation aligned orderly on the 2D surface, leading to CTE-based CPL. The CTE-based CPL is in analogy with conventional emission, which is capable to transfer its energy to a donor via a FRET process, making it possible to develop environmental friendly and economic CPL from sustained and renewable materials.

Homochiral One-Dimensional ABX3 Lead Halide Perovskites with High-Tc Quadratic Nonlinear Optical and Dielectric Switchings

2021 ◽  
Author(s):  
Hang Peng ◽  
Yu-Hua Liu ◽  
Xue-Qin Huang ◽  
Qin Liu ◽  
Zi-Hong Yu ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Polarized Light ◽  
High Tc ◽  
Inorganic Hybrid ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
One Dimensional ◽  
Nonvolatile Memories ◽  
Halide Perovskites ◽  
Lead Halide

Chiral organic-inorganic hybrid lead-halide perovskites have attracted increasing attention for their wide applications prospect in chiroptoelectronics, such as circularly polarized light (CPL) photodetectors and LEDs, nonvolatile memories, and spintronics, etc....

Differential polarization imaging of sickled cells

1988 ◽  
Vol 46 ◽  
pp. 62-63
Author(s):  
Marcos F. Maestre
Keyword(s):  
Optical Properties ◽  
Theoretical Approach ◽  
Polarized Light ◽  
Polarization Microscopy ◽  
Spectroscopic Techniques ◽  
Polarization Imaging ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Microscopic Scale ◽  
Chiral Structures

Recently we have developed a form of polarization microscopy that forms images using optical properties that have previously been limited to macroscopic samples. This has given us a new window into the distribution of structure on a microscopic scale. We have coined the name differential polarization microscopy to identify the images obtained that are due to certain polarization dependent effects. Differential polarization microscopy has its origins in various spectroscopic techniques that have been used to study longer range structures in solution as well as solids. The differential scattering of circularly polarized light has been shown to be dependent on the long range chiral order, both theoretically and experimentally. The same theoretical approach was used to show that images due to differential scattering of circularly polarized light will give images dependent on chiral structures. With large helices (greater than the wavelength of light) the pitch and radius of the helix could be measured directly from these images.

Blue Circularly Polarized Luminescent Amorphous Molecules with Single-handed Propeller Chirality Induced by Circularly Polarized Light Irradiation

2021 ◽  
Author(s):  
Zhaoming Zhang ◽  
Takunori Harada ◽  
Adriana Pietropaolo ◽  
Yuting Wang ◽  
Yue Wang ◽  
...  
Keyword(s):  
Polarized Light ◽  
Light Irradiation ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Trigonal Symmetry ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Preferred-handed propeller conformation was induced by circularly polarized light irradiation to three amorphous molecules with trigonal symmetry, and the molecules with induced chirality efficiently exhibited blue circularly polarized luminescence. In...

Sign in / Sign up

Export Citation Format

Share Document