scholarly journals Double Heterohelicenes Composed of Benzo[b]- and Dibenzo[b,i]phenoxazine: A Comprehensive Comparison of Their Electronic and Chiroptical Properties

2021 ◽  
Author(s):  
Daisuke Sakamaki ◽  
Shunya Tanaka ◽  
Katsuki Tanaka ◽  
Mayu Takino ◽  
Masayuki Gon ◽  
...  
Keyword(s):  
Molecular Electronics ◽  
Dipole Moments ◽  
Donor Property ◽  
Chiroptical Properties ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Td Dft ◽  
Polarized Luminescence ◽  
Comprehensive Comparison ◽  
P Type

Heterohelicenes are potential materials in molecular electronics and optics because of their inherent chirality and various electronic properties originating from the introduced heteroatoms. In this work, we comprehensively investigated two kinds of double NO-hetero[5]helicenes composed of 12H-benzo[b]phenoxazine (BPO) and 13H-dibenzo[b,i]phenoxazine (DBPO). These helicenes exhibit good electron donor property reflecting the electron-rich character of their monomers and were demonstrated to work as p-type semiconductors. The enantiomers of these helicenes show the largest class of dissymmetry factors for circularly polarized luminescence (CPL) (|gCPL| > 10−2) among the previously reported helicenes. Interestingly, the signs of CPL are opposite between BPO- and DBPO-double helicenes of the same helicity. The origin of the large gCPL values and the inversion of the CPL signs was addressed by analysis of the transition electronic dipole moments (TEDM) and transition magnetic dipole moments (TMDM) based on the TD-DFT calculations.

scholarly journals Mechano-responsive circularly polarized luminescence of organic solid-state chiral emitters

2019 ◽  
Vol 10 (3) ◽  
pp. 843-847 ◽  
Author(s):  
Marine Louis ◽  
Ramarani Sethy ◽  
Jatish Kumar ◽  
Shouhei Katao ◽  
Régis Guillot ◽  
...  
Keyword(s):  
Solid State ◽  
Mechanical Stimulation ◽  
Chiroptical Properties ◽  
Circularly Polarized ◽  
Organic Solid ◽  
Emission Color ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Organic Solid State

Mechano-CPL effect: chiral difluoro-boron β-diketonate complexes show concomitant changes of emission color as well as solid state chiroptical properties upon mechanical stimulation.

Stereogenic cyclic oligonaphthalenes displaying ring size-dependent handedness of circularly polarized luminescence (CPL)

2019 ◽  
Vol 55 (19) ◽  
pp. 2749-2752 ◽  
Author(s):  
Yuki Nojima ◽  
Masashi Hasegawa ◽  
Nobuyuki Hara ◽  
Yoshitane Imai ◽  
Yasuhiro Mazaki
Keyword(s):  
Coupling Reaction ◽  
Ring Size ◽  
Chiroptical Properties ◽  
Circularly Polarized ◽  
Size Dependent ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Cyclic Oligomers

A series of cyclic oligomers with Dn symmetry (n = 2–5) based on chiral (R)/(S)-binaphthyl exhibiting intensive chiroptical properties were synthesized by using a Ni(0)-catalyzed coupling reaction.

Optically active cyclic compounds based on planar chiral [2.2]paracyclophane: extension of the conjugated systems and chiroptical properties

2015 ◽  
Vol 3 (3) ◽  
pp. 521-529 ◽  
Author(s):  
Masayuki Gon ◽  
Yasuhiro Morisaki ◽  
Yoshiki Chujo
Keyword(s):  
Optically Active ◽  
Chiroptical Properties ◽  
Circularly Polarized ◽  
Conjugated Systems ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Cyclic Compounds

Optically active propeller-shaped cyclic compounds based on planar chiral [2.2]paracyclophane emit intense and bright circularly polarized luminescence (CPL).

Planar Chiral Boron Difluoride Complexes showing Circularly Polarized Luminescence

2021 ◽  
Author(s):  
Chun-Hua Chen ◽  
Wen-hua Zheng
Keyword(s):  
Chiral Complexes ◽  
Chiroptical Properties ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Cotton Effects ◽  
Boron Difluoride

A family of novel boron difluoride complexes based on [2.2]paracyclophane has been designed and facilely synthesized. These chiral complexes have been demonstrated have excellent chiroptical properties, with strong Cotton effects...

Circularly polarized luminescence of nanoassemblies via multi-dimensional chiral architecture control

Nanoscale ◽  
2020 ◽  
Vol 12 (38) ◽  
pp. 19497-19515
Author(s):  
Wenjie Chen ◽  
Kai Ma ◽  
Pengfei Duan ◽  
Guanghui Ouyang ◽  
Xuefeng Zhu ◽  
...  
Keyword(s):  
Chiroptical Properties ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Chiral Systems

Circularly polarized luminescence (CPL) is currently an important chiroptical properties among chiral systems. By tuning the dimensional architectures of nanoassemblies, the CPL properties could be effectively tuned and boosted.

scholarly journals Aromatic oligoamide foldamers as versatile scaffolds for induced circularly polarized luminescence at adjustable wavelengths

2019 ◽  
Vol 55 (66) ◽  
pp. 9825-9828 ◽  
Author(s):  
Eric Merlet ◽  
Kevin Moreno ◽  
Arnaud Tron ◽  
Nathan McClenaghan ◽  
Brice Kauffmann ◽  
...  
Keyword(s):  
Chiroptical Properties ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Quinoline oligoamide foldamers appended with non-chiral fluorophores and derivatized with a camphanyl chiral inducer display strong chiroptical properties at tunable wavelengths as proved by CD and CPL spectroscopies.

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