scholarly journals CHCl3-Dependent Emission Color and Jumping Behavior of Cyclic Chalcone Single Crystals: The Halogen Bond Network Effect

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 530
Author(s):  
Zeqing Tan ◽  
Jian Zhao ◽  
Jingzhi Sun ◽  
Jiaxin Zhao ◽  
Xinrui He ◽  
...  
Keyword(s):  
Single Crystals ◽  
Crystal Packing ◽  
Halogen Bond ◽  
Phase 1 ◽  
Network Effect ◽  
Crystal Phase ◽  
Structure And Properties ◽  
Pure Crystal ◽  
Emission Color ◽  
Bond Network

As a conventional strategy to modulate the structure and properties of inorganic single crystals, hydration/solvation is rarely found to function in pure organic single crystal. Herein, we report chalcone single crystals with CHCl3-dependent emission color and jumping behavior. Two crystals: a pure crystal phase (1) with green-yellow emission and a CHCl3-containing co-crystal phase (1•2CHCl3) with orange-red emission were constructed by fine-controlling the crystallization conditions. The special halogen bond network in the crystal packing structure effectively narrows the bandgap and thereby redshift the emission of 1•2CHCl3. 1•2CHCl3 would revert to 1 together with emission color change when losing CHCl3. These findings are similar to the effect of H2O in hydrated inorganic crystals. Notably, owing to a special pre-organized “molecular pair” structure for [2 + 2] cycloaddition, the pure crystal phase 1 exhibits violently photo-induced jumping phenomenon, indicating large potentials in intelligent devices. This work would overturn the previous perception that the structurally simple solvent molecules without conjugation cannot greatly affect the structure and properties of pure organic single crystals and provide a new strategy to construct multi-colored organic fluorescent crystals.

Impurities influence of sulfur, phosphorous and silicon on structure and properties of single-crystals of nickel-based heat-resistant superalloys

2018 ◽  
Vol 0 (8) ◽  
pp. 13-18 ◽  
Author(s):  
P. G. Min ◽  
◽  
D. Ye. Kablov ◽  
V. V. Sidorov ◽  
V. Ye. Vadeyev ◽  
...  
Keyword(s):  
Single Crystals ◽  
Structure And Properties ◽  
Heat Resistant

scholarly journals Low-alloyed molybdenum single crystals: preparation, structure and properties

2019 ◽  
Vol 1347 ◽  
pp. 012119
Author(s):  
G S Burkhanov ◽  
V S Yusupov ◽  
V M Kirillova ◽  
V V Sdobyrev ◽  
V A Dement’ev ◽  
...  
Keyword(s):  
Single Crystals ◽  
Structure And Properties

scholarly journals (Z)-3-[2-(2,4-Dinitrophenyl)hydrazin-1-ylidene]isobenzofuran-1(3H)-one dichloromethane hemisolvate

2014 ◽  
Vol 70 (4) ◽  
pp. o418-o418
Author(s):  
Palak Agarwal ◽  
Pragati Mishra ◽  
Nikita Gupta ◽  
Neelam ◽  
Priyaranjan Sahoo ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Halogen Bond ◽  
Solvent Molecule ◽  
Twofold Axis ◽  
Bond Interaction ◽  
The Mean

In the title compound, 2C14H8N4O6·CH2Cl2, the dichloromethane solvent molecule resides on a crystallographic twofold axis. The mean plane of the phthalisoimide ring is oriented at a dihedral angle of 32.93 (12)° with respect to the nitro-substituted benzene ring. An intramolecular N—H...O hydrogen bond occurs. The crystal packing features a short Cl...O halogen-bond interaction [3.093 (3) Å].

Structure and Properties of Single Crystal Al2O3 Implanted with Chromium and Zirconium

1981 ◽  
Vol 7 ◽  
Author(s):  
C. J. Mchargue ◽  
H. Naramoto ◽  
B. R. Appleton ◽  
C. W. White ◽  
J. M. Williams
Keyword(s):  
Fracture Toughness ◽  
Single Crystal ◽  
Single Crystals ◽  
Solid Solutions ◽  
Rutherford Backscattering ◽  
Structure And Properties ◽  
Indentation Fracture ◽  
Surface Layers ◽  
Indentation Fracture Toughness

ABSTRACTSingle crystals of Al2O3 were implanted with chromium and zirconium to fluences of 1 × 1016 to 1 × 1017 ions cm−2. Rutherford backscattering-channeling studies showed the surface layers to be damaged but crystalline with the implanted ions randomly distributed. The microhardness and indentation fracture toughness were higher for the random solutions than for conventionally formed solid solutions. Changes in structure and properties caused by annealing in air at temperatures up to 1800°C were studied.

A study on the effects of mixed organic cations on the structure and properties in lead halide perovskites

2020 ◽  
Vol 22 (5) ◽  
pp. 3105-3111 ◽  
Author(s):  
Chao Wu ◽  
Daoyou Guo ◽  
Peigang Li ◽  
Shunli Wang ◽  
Aiping Liu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Single Crystals ◽  
Electrical Transport ◽  
Organic Cation ◽  
Organic Cations ◽  
Structure And Properties ◽  
Electrical Transport Properties ◽  
Halide Perovskites ◽  
A Site ◽  
Lead Halide

Four types of organic cation-mixed single crystals were successfully synthesized by partially substituting A site cations to investigate the effect of organic cations on structure, optical features, thermal stability, and electrical transport properties.

Graded X-ray Optics for Synchrotron Radiation Applications

1998 ◽  
Vol 5 (3) ◽  
pp. 239-245 ◽  
Author(s):  
A. Erko ◽  
M. Veldkamp ◽  
W. Gudat ◽  
N. V. Abrosimov ◽  
S. N. Rossolenko ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Magnetron Sputtering ◽  
Single Crystals ◽  
Theoretical Data ◽  
Lattice Parameter ◽  
Structure And Properties ◽  
Czochralski Technique ◽  
Spectral Measurements ◽  
Optical Elements ◽  
X Ray

Using X-ray diffractometry and spectral measurements, the structure and properties of graded X-ray optical elements have been examined. Experimental and theoretical data on X-ray supermirrors, which were prepared by the magnetron sputtering technique using precise thickness control, are reported. Measurements on graded aperiodic Si1−x Ge x single crystals, which were grown by the Czochralski technique, are also presented. The lattice parameter of such a crystal changes almost linearly with increasing Ge concentration. The measurements indicate that Si1−x Ge x crystals with concentrations up to 7 at.% Ge can be grown with a quality comparable to that of pure Si crystals.

Polysulfonylamine, XCVII [1] Di(organosulfonyl)amine und ihre konjugierten Anionen als simultane Baugruppen in zwei supramolekularen Strukturen / Polysulfonylamines, XCVII [1] Di(organosulfonyl)amines and their Conjugate Anions as Simultaneous Building Blocks in Two Supramolecular Structures

1997 ◽  
Vol 52 (10) ◽  
pp. 1229-1236 ◽  
Author(s):  
Dagmar Henschel ◽  
Karna Wijaya ◽  
Oliver Moers ◽  
Armand Blaschette ◽  
Peter G. Jones
Keyword(s):  
Crystal Packing ◽  
Building Blocks ◽  
Complex Compounds ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Space Group ◽  
Diffraction Structure ◽  
Bond System ◽  
Bond Network ◽  
Anion Interaction

The complex compounds 4HN (SO2Me)2 · (diaza-18-crown-6) (1) and Na[N(SO2Ph)2] · 2HN(SO2Ph)2 · 2 (12-crown-4) · 2 MeOH (2) were obtained from their components and characterized by low-temperature X-ray diffraction. Structure 1 (monoclinic, space group P21/n) displays centrosymmetric formula units consisting of a biangular diazonia-18-crown-6 dication, two (MeSO2)2N− anions situated above and below the macrocycle and linked to the NH2+ groups via an N - H ··· O and N -H ··· N bond system, and finally two HN(SO2Me)2 molecules, each forming an N -H ··· O bond to one of the anions. The molecule-anion entity represents an iso form of the [(RSO2)2N -H ··· N (SO2R)2]− homoconjugates previously described. The crystal packing of 1 is stabilized by an extensive and highly organized [H2C -H ··· O(S)] hydrogen bond network. Structure 2 (monoclinic, space group P21/n) exhibits inconspicuous [Na(12-crown-4)2]+ cations and, as a striking feature, supramolecular anions assembled from a central (PhSO2)2N− ion, two MeOH molecules flanking the amide anion, and two HN (SO2Ph)2 molecules bonded to the MeOH moieties. The assembly is held together by two N -H ··· O(H )(Me) bonds, one MeO -H ··· N− bond and one MeO -H ··· O(anion) interaction. For both structures, conformational peculiarities of the N(SO2C)2 groups are discussed.

How can multi-bond network hydrogels dissipate energy more effectively: an investigation on the relationship between network structure and properties

Soft Matter ◽  
2020 ◽  
Vol 16 (18) ◽  
pp. 4407-4413 ◽  
Author(s):  
Hao Xu ◽  
Fu-Kuan Shi ◽  
Xiao-Ying Liu ◽  
Ming Zhong ◽  
Xu-Ming Xie
Keyword(s):  
Network Structure ◽  
Structure And Properties ◽  
Double Network ◽  
Structure Changes ◽  
Bond Network ◽  
The Relationship

As the amount of PVA microcrystals increases, the network structure changes from being dual-crosslinked (for pure PAA hydrogels) to ternary-crosslinked and finally to a double network structure, as shown by the step-increased modulus of the hydrogels.

scholarly journals Hydrogen- and halogen-bond cooperativity in determining the crystal packing of dihalogen charge-transfer adducts: a study case from heterocyclic pentatomic chalcogenone donors

CrystEngComm ◽  
2017 ◽  
Vol 19 (30) ◽  
pp. 4401-4412 ◽  
Author(s):  
Riccardo Montis ◽  
Massimiliano Arca ◽  
M. Carla Aragoni ◽  
Antonio Bauzá ◽  
Francesco Demartin ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Crystal Packing ◽  
Halogen Bond ◽  
Supramolecular Architectures ◽  
Study Case

A synergic cooperation between HB and XB interactions determines the supramolecular architectures in dihalogen CT adducts of hydantoin-like chalcogen donors.

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