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...

Isopinocampheyl-based C-BODIPYs: A model strategy to construct cost-effective boron-chelate emitters of circularly polarized light

2021 ◽  
Author(s):  
Josue Jiménez ◽  
Florencio Moreno Jiménez ◽  
Teresa Arbeloa López ◽  
Trevor A. Cabreros ◽  
Gilles Muller ◽  
...  
Keyword(s):  
Polarized Light ◽  
Cost Effective ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
First Time ◽  
Boron Chelate

Efficient circularly polarized luminescence (CPL) brightness from 4,4-diisopinocampheylBODIPY is detected for the first time. This finding demonstrates the workability of a new design, based on using chiral-pool derived chloro(diisopinocampheyl)borane, to...

scholarly journals Circularly polarized luminescence from organic micro-/nano-structures

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Yongjing Deng ◽  
Mengzhu Wang ◽  
Yanling Zhuang ◽  
Shujuan Liu ◽  
Wei Huang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Polarized Light ◽  
Design Principles ◽  
Active Materials ◽  
High Quantum Efficiency ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Nano Structures ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

AbstractCircularly polarized light exhibits promising applications in future displays and photonic technologies. Circularly polarized luminescence (CPL) from chiral luminophores is an ideal approach to directly generating circularly polarized light, in which the energy loss induced by the circularly polarized filters can be reduced. Among various chiral luminophores, organic micro-/nano-structures have attracted increasing attention owing to the high quantum efficiency and luminescence dissymmetry factor. Herein, the recent progress of CPL from organic micro-/nano-structures is summarized. Firstly, the design principles of CPL-active organic micro-/nano-structures are expounded from the construction of micro-/nano-structure and the introduction of chirality. Based on these design principles, several typical organic micro-/nano-structures with CPL activity are introduced in detail, including self-assembly of small molecules, self-assembly of π-conjugated polymers, and self-assembly on micro-/nanoscale architectures. Subsequently, we discuss the external stimuli that can regulate CPL performance, including solvents, pH value, metal ions, mechanical force, and temperature. We also summarize the applications of CPL-active materials in organic light-emitting diodes, optical information processing, and chemical and biological sensing. Finally, the current challenges and prospects in this emerging field are presented. It is expected that this review will provide a guide for the design of excellent CPL-active materials.

scholarly journals Analysis of Circularly Polarized Light Irradiation Effects on Double Ferromagnetic-Gate Silicene Junction

2018 ◽  
Vol 12 (1) ◽  
pp. 17-25
Author(s):  
Peerasak Chantngarm ◽  
Kou Yamada
Keyword(s):  
Band Structure ◽  
Electric Fields ◽  
Chemical Potential ◽  
Polarized Light ◽  
Light Irradiation ◽  
Main Role ◽  
Exchange Field ◽  
Irradiation Effects ◽  
Circularly Polarized Light ◽  
Circularly Polarized

We present an analytical study of effects that off-resonant circularly polarized light irradiation has on spin-valley currents in dual ferromagnetic-gate silicene-based junctions. Two identical electric fields are applied to both ferromagnetic (FM) gates. Two types of exchange field configurations, parallel (P) and anti-parallel (AP), are applied along with chemical potential to the FM gates in this investigation. The results show that application of circularly polarized light has an impact on polarized spin and valley current characteristics, particularly at the off-resonant frequency region. It also enhances the amplitude of tunnelling magnetoresistance (TMR) significantly. In addition, we found that exchange field configuration has an effect on both spin polarization and valley polarization. Our study reveals that light intensity plays the main role on the light irradiation effects, where the band structure and change electronic properties of the materials are modified by photon dressing to create a new phase of electronic structure. The change of band structure in each region affects the transmission coefficients and transmission probability amplitude of electrons, which in turn affects the conductance of each spin-valley current component. Our study suggests the potential of this scheme in applications, such as spin-valleytronic photo-sensing devices under polarized-photo irradiation.

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.

Circularly polarized luminescence spectroscopy

1977 ◽  
Vol 77 (6) ◽  
pp. 773-792 ◽  
Author(s):  
Frederick S. Richardson ◽  
James P. Riehl
Keyword(s):  
Luminescence Spectroscopy ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence
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