scholarly journals Synthesis and circularly polarized luminescence properties of BINOL-derived bisbenzofuro[2,3-b:3’,2’-e]pyridines (BBZFPys)

2020 ◽  
Vol 16 ◽  
pp. 325-336 ◽  
Author(s):  
Ryo Takishima ◽  
Yuji Nishii ◽  
Tomoaki Hinoue ◽  
Yoshitane Imai ◽  
Masahiro Miura
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Crystal Structures ◽  
Optically Active ◽  
Ring Closure ◽  
Circularly Polarized ◽  
X Ray ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Palladium Catalyzed

A series of optically active bisbenzofuro[2,3-b:3’,2’-e]pyridine (BBZFPy) derivatives was synthesized starting with the readily available (S)- and (R)-1,1’-bi-2-naphthols through a palladium-catalyzed multiple intramolecular C–H/C–H coupling as the key ring-closure step. The effect of terminal tert-butyl substituents on the BBZFPy skeleton was systematically investigated to uncover a unique aggregation-induced enhancement of CPL characteristics in the solid state. The crystal structures of the coupling products were also evaluated by single crystal X-ray analysis and the well-ordered intermolecular stacking arrangements appeared to be responsible for the enhanced CPL.

Supramolecular self-assembly of chiral helical tubular polymers with amplified circularly polarized luminescence

2020 ◽  
Vol 4 (9) ◽  
pp. 2772-2781
Author(s):  
Xianhui Tang ◽  
Dandan Chu ◽  
Hong Jiang ◽  
Wei Gong ◽  
Chao Jiang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Self Assembly ◽  
Supramolecular Polymers ◽  
Circularly Polarized ◽  
X Ray ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Two chiral tubular supramolecular polymers with amplified CPL that can be rationalized by single-crystal X-ray structures are demonstrated.

scholarly journals Iridium(iii) phosphorescent complexes with dual stereogenic centers: single crystal, electronic circular dichroism evidence and circularly polarized luminescence properties

2016 ◽  
Vol 45 (48) ◽  
pp. 19234-19237 ◽  
Author(s):  
Tian-Yi Li ◽  
You-Xuan Zheng ◽  
Yong-Hui Zhou
Keyword(s):  
Single Crystal ◽  
Crystal Structures ◽  
Mirror Image ◽  
Luminescence Properties ◽  
Iridium Complexes ◽  
Electronic Circular Dichroism ◽  
Circularly Polarized ◽  
Stereogenic Centers ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Two iridium complexes with a chiral metal center and chiral carbons were separated as four isomers termed Λ/Δ-(dfppy)2Ir(chty-R) and Λ/Δ-(dfppy)2Ir(chty-S). Each enantiomeric couple shows mirror-image crystal structures, and ECD/CPL spectra highlight both the chiral sources.

scholarly journals Solid‐State Near‐Infrared Circularly Polarized Luminescence from Chiral YbIII‐Single‐Molecule Magnet

2021 ◽  
Author(s):  
Fabrice Pointillart ◽  
Bertrand Lefeuvre ◽  
Carlo Andrea Mattei ◽  
Jessica Flores Gonzalez ◽  
Frédéric Gendron ◽  
...  
Keyword(s):  
Solid State ◽  
Single Molecule ◽  
Near Infrared ◽  
Circularly Polarized ◽  
Single Molecule Magnet ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Improved enantioselectivity in thiol–ene photopolymerization of sulphur-containing polymers with circularly polarized luminescence

2021 ◽  
Vol 12 (16) ◽  
pp. 2433-2438
Author(s):  
Chen-Lu He ◽  
Zeyu Feng ◽  
Yan Li ◽  
Manman Zhou ◽  
Liyang Zhao ◽  
...  
Keyword(s):  
Optically Active ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Luminescence Behavior

Optically active poly(thioether) are obtained based on CPL-triggered thiol–ene photopolymerization assisted with achiral HAD. The poly(thioether) exhibits clusterization-triggered emission and circularly polarized luminescence behavior.

A solid-state dedicated circularly polarized luminescence spectrophotometer: Development and application

2016 ◽  
Vol 87 (7) ◽  
pp. 075102 ◽  
Author(s):  
Takunori Harada ◽  
Hiroshi Hayakawa ◽  
Masayuki Watanabe ◽  
Makoto Takamoto
Keyword(s):  
Solid State ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Crystal structures of some eriostyl/nitrobenzoate derivatives

1980 ◽  
Vol 33 (2) ◽  
pp. 313 ◽  
Author(s):  
PR Jefferies ◽  
BW Skelton ◽  
B Walter ◽  
AH White
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Single Crystal ◽  
Crystal Structures ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure Determinations

Following the suggestion made earlier, on the basis of solution spectroscopy, that a number of eriostyl/nitrobenzoate compounds form charge-transfer self-complexes, a number of these have been investigated structurally by single-crystal X-ray diffraction methods in order to ascertain the presence or otherwise of such interactions in the solid state. The substances thus studied were eriostyl 3,5-dinitrobenzoate (1), eriostyl p-nitrobenzoate (2), tetrahydroeriostyl 3,5-dinitrobenzoate (3), and eriostemyl 3,5-dinitrobenzoate (4);* structure determinations in all cases, although displaying the presence of strong charge-transfer interactions from the two moieties of each molecule, show that the interactions in the solid state are intermolecular in nature.

scholarly journals Substituent Effects in 3,3’ Bipyrazole Derivatives. X-ray Crystal Structures, Molecular Properties and DFT Analysis

2021 ◽  
Vol 68 (3) ◽  
pp. 718-727
Author(s):  
Ibrahim Bouabdallah ◽  
Tarik Harit ◽  
Mahmoud Rahal ◽  
Fouad Malek ◽  
Monique Tillard ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Density Functional Theory ◽  
Solid State ◽  
Dft Calculations ◽  
Single Crystal ◽  
Crystal Structures ◽  
Density Functional ◽  
Substituent Effects ◽  
Functional Theory ◽  
X Ray

The single crystal X-ray structure of new 1,1’-bis(2-nitrophenyl)-5,5’-diisopropyl-3,3’-bipyrazole, 1, is triclinic P I–, a = 7.7113(8), b = 12.3926(14), c = 12.9886(12) Å, α = 92.008(8), β = 102.251(8), γ = 99.655(9)°. The structural arrangement is compared to that of 5,5’-diisopropyl-3,3’-bipyrazole, 5, whose single crystal structure is found tetragonal I41/a, a = b = 11.684(1), c = 19.158(1) Å. The comparison is also extended to the structures previously determined for 1,1’-bis(2-nitrophenyl)-5,5’-propyl-3,3’-bipyrazole, 2, 1,1’-bis(4-nitrophenyl)-5,5’-diisopropyl-3,3’-bipyrazole, 3, and 1,1’-bis(benzyl)-5,5’-diisopropyl-3,3’-bipyrazole, 4. Density Functional Theory (DFT) calculations are used to investigate the molecular geometries and to determine the global reactivity parameters. The geometry of isolated molecules and the molecular arrangements in the solid state are analyzed according to the nature of the groups connected to the bipyrazole core.

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