New Family of Aminophenalenyl-Based Neutral Radical Molecular Conductors:  Synthesis, Structure, and Solid State Properties

2005 ◽  
Vol 127 (22) ◽  
pp. 8185-8196 ◽  
Author(s):  
Swadhin K. Mandal ◽  
Mikhail E. Itkis ◽  
Xiaoliu Chi ◽  
Satyabrata Samanta ◽  
David Lidsky ◽  
...  
Keyword(s):  
Solid State ◽  
Molecular Conductors ◽  
Neutral Radical ◽  
New Family

Phenalenyl-Based Neutral Radical Molecular Conductors:  Substituent Effects on Solid-State Structures and Properties

2007 ◽  
Vol 129 (22) ◽  
pp. 7163-7174 ◽  
Author(s):  
Sushanta K. Pal ◽  
Mikhail E. Itkis ◽  
Fook S. Tham ◽  
Robert W. Reed ◽  
Richard T. Oakley ◽  
...  
Keyword(s):  
Solid State ◽  
Substituent Effects ◽  
Molecular Conductors ◽  
Neutral Radical ◽  
Structures And Properties ◽  
Solid State Structures

scholarly journals Mesomorphic Behavior in Silver(I) N-(4-Pyridyl) Benzamide with Aromatic π–π Stacking Counterions

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1666 ◽  
Author(s):  
Issac Torres ◽  
Mauro Ruiz ◽  
Hung Phan ◽  
Noemi Dominguez ◽  
Jacobo Garcia ◽  
...  
Keyword(s):  
Solid State ◽  
Organic Semiconductors ◽  
Flexible Electronics ◽  
Crystalline Solid ◽  
Naval Research ◽  
Scanning Calorimetry ◽  
New Family ◽  
Π Stacking ◽  
Capable Groups ◽  
New Generation

Organic semiconductor materials composed of π–π stacking aromatic compounds have been under intense investigation for their potential uses in flexible electronics and other advanced technologies. Herein we report a new family of seven π–π stacking compounds of silver(I) bis-N-(4-pyridyl) benzamide with varying counterions, namely [Ag(NPBA)2]X, where NPBA is N-(4-pyridyl) benzamine, X = NO3− (1), ClO4− (2), CF3SO3− (3), PF6− (4), BF4− (5), CH3PhSO3− (6), and PhSO3− (7), which form extended π−π stacking networks in one-dimensional (1D), 2D and 3D directions in the crystalline solid-state via the phenyl moiety, with average inter-ring distances of 3.823 Å. Interestingly, the counterions that contain π–π stacking-capable groups, such as in 6 and 7, can induce the formation of mesomorphic phases at 130 °C in dimethylformamide (DMF), and can generate highly branched networks at the mesoscale. Atomic force microscopy studies showed that 2D interconnected fibers form right after nucleation, and they extend from ~30 nm in diameter grow to reach the micron scale, which suggests that it may be possible to stop the process in order to obtain nanofibers. Differential scanning calorimetry studies showed no remarkable thermal behavior in the complexes in the solid state, which suggests that the mesomorphic phases originate from the mechanisms that occur in the DMF solution at high temperatures. An all-electron level simulation of the band gaps using NRLMOL (Naval Research Laboratory Molecular Research Library) on the crystals gave 3.25 eV for (1), 3.68 eV for (2), 1.48 eV for (3), 5.08 eV for (4), 1.53 eV for (5), and 3.55 eV for (6). Mesomorphic behavior in materials containing π–π stacking aromatic interactions that also exhibit low-band gap properties may pave the way to a new generation of highly branched organic semiconductors.

A new family of light-emissive symmetric squarylium dyes in the solid state

2015 ◽  
Vol 122 ◽  
pp. 134-138 ◽  
Author(s):  
Yutaka Ohsedo ◽  
Kowichiro Saruhashi ◽  
Hisayuki Watanabe
Keyword(s):  
Solid State ◽  
New Family ◽  
Squarylium Dyes

A tale of hydrogen abstraction, initially detectedviaX-ray diffraction

2014 ◽  
Vol 70 (3) ◽  
pp. 250-255 ◽  
Author(s):  
Alice K. Hui ◽  
Chun-Hsing Chen ◽  
Adam M. Terwilliger ◽  
Richard L. Lord ◽  
Kenneth G. Caulton
Keyword(s):  
Solid State ◽  
Density Functional ◽  
Computational Study ◽  
Hydrogen Abstraction ◽  
Open Shell ◽  
X Ray Diffraction ◽  
Neutral Radical ◽  
X Ray ◽  
Chloride Ligand ◽  
Synthetic Reaction

Reaction of a bis-tetrazinyl pyridine pincer ligand, btzp, with a vanadium(III) reagent gives not a simple adduct but dichlorido{3-methyl-6-[6-(6-methyl-1,2,4,5-tetrazin-3-yl-κN2)pyridin-2-yl-κN]-1,4-dihydro-1,2,4,5-tetrazin-1-yl-κN1}oxidovanadium(IV) acetonitrile 2.5-solvate, [V(C11H10N9)Cl2O]·2.5CH3CN, a species which X-ray diffraction reveals to have one H atom added to one of the two tetrazinyl rings. This H atom was first revealed by a short intermolecular N...Cl contact in the unit cell and subsequently established, from difference maps, to be associated with a hydrogen bond. One chloride ligand has also been replaced by an oxide ligand in this synthetic reaction. This formula for the complex, [V(Hbtzp)Cl2O], leaves open the question of both ligand oxidation state and spin state. A computational study of all isomeric locations of the H atom shows the similarity of their energies, which is subject to perturbation by intermolecular hydrogen bonding found in X-ray work on the solid state. These density functional calculations reveal that the isomer with the H atom located as found in the solid state contains a neutral radical Hbtzp ligand and tetravalentd1V center, but that these two unpaired electrons are more stable as an open-shell singlet and hence antiferromagnetically coupled.

Crystal-to-crystal transformation in solid-state electrochemical doping of Cl− ions to the nanoporous neutral radical lithium phthalocyanine: revelation of electron–electron correlations in the 1D half-filled system

CrystEngComm ◽  
2014 ◽  
Vol 16 (39) ◽  
pp. 9266-9272 ◽  
Author(s):  
Yasuhito Miyoshi ◽  
Hirofumi Yoshikawa ◽  
Kunio Awaga
Keyword(s):  
Solid State ◽  
Electron Correlations ◽  
Neutral Radical ◽  
Electrochemical Doping ◽  
Crystal Transformation ◽  
System P

Solid-state electrochemical doping of Cl− ions to nanoporous LiPc crystals induces crystal-to-crystal transformation to LiPc·Clx.

Toward a new generation of white phosphors for solid state lighting using glassy yttrium aluminoborates

2015 ◽  
Vol 3 (22) ◽  
pp. 5795-5802 ◽  
Author(s):  
Vinicius Ferraz Guimarães ◽  
Lauro J. Q. Maia ◽  
Isabelle Gautier-Luneau ◽  
Christophe Bouchard ◽  
Antonio Carlos Hernandes ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Lighting ◽  
New Family ◽  
New Generation

We present a new family of highly emissive white phosphors.

Dimeric Phenalenyl-Based Neutral Radical Molecular Conductors

2001 ◽  
Vol 123 (17) ◽  
pp. 4041-4048 ◽  
Author(s):  
X. Chi ◽  
M. E. Itkis ◽  
K. Kirschbaum ◽  
A. A. Pinkerton ◽  
R. T. Oakley ◽  
...  
Keyword(s):  
Molecular Conductors ◽  
Neutral Radical

scholarly journals A Basic View of Solid State Electronics

1967 ◽  
Author(s):  
Bruce E. Mathews
Keyword(s):  
Solid State ◽  
Large Class ◽  
Basic Element ◽  
Citrus Industry ◽  
Solid State Electronics ◽  
New Family ◽  
New Concepts ◽  
Control Devices ◽  
Design And Manufacture ◽  
The Impact

Solid State Electronics includes the study and development of a large class of devices which are replacing vacuum tube techniques and revolutionizing the applications of electrical engineering. The most famous member of this new family of devices is the transistor. All of us are influenced by these developments right in our homes since all modern radio and television sets use the transistor as a basic element. The success of our space effort is largely due to the advances in solid state electronics. Virtually all industries, including the citrus industry, have felt the impact of these developments in making available whole new concepts in instrumentation, control devices, and computers. The future possibilities are unlimited. Already we are seeing the expression of solid state electronics in a whole new concept of design and manufacture called microelectronics. Although one does not need to understand the theory of solid state electronics to enjoy the fruits of the developments, I thought it would be interesting to you to have a brief basic view of a subject which is having a significant impact on the citrus industry. Paper published with permission.

scholarly journals Naphthyl-Fused Phosphepines: Luminescent Contorted Polycyclic P-Heterocycles

2019 ◽  
Author(s):  
Thomas Delouche ◽  
Réka Mokrai ◽  
Thierry Roisnel ◽  
Denis Tondelier ◽  
Bernard Geffroy ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Solid State ◽  
Phosphine Oxide ◽  
Steric Hindrance ◽  
Building Blocks ◽  
Redox Properties ◽  
Substitution Reactions ◽  
Pi Conjugated ◽  
New Family ◽  
Pi Systems

The article presents the synthesis of a new family of naphthyl-fused phosphepines through Ni-mediated C-C coupling. Interestingly, the chloro-phosphine-oxide intermediate shows strong resistance toward oxidation/hydrolysis due to a combination of steric hindrance and pnictogen interactions. However it can undergo substitution reactions under specific conditions. The optical / redox properties and the electronic structure of these new pi-systems were studied experimentally and computationally. Taking advantage of the luminescence of these derivatives, a blue emitting OLED has been prepared highlighting that these novel pi-conjugated P-heterocycles appear as promising building blocks for solid-state lightning applications.

scholarly journals Naphthyl-Fused Phosphepines: Luminescent Contorted Polycyclic P-Heterocycles

2019 ◽  
Author(s):  
Thomas Delouche ◽  
Réka Mokrai ◽  
Thierry Roisnel ◽  
Denis Tondelier ◽  
Bernard Geffroy ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Solid State ◽  
Phosphine Oxide ◽  
Steric Hindrance ◽  
Building Blocks ◽  
Redox Properties ◽  
Substitution Reactions ◽  
Pi Conjugated ◽  
New Family ◽  
Pi Systems

The article presents the synthesis of a new family of naphthyl-fused phosphepines through Ni-mediated C-C coupling. Interestingly, the chloro-phosphine-oxide intermediate shows strong resistance toward oxidation/hydrolysis due to a combination of steric hindrance and pnictogen interactions. However it can undergo substitution reactions under specific conditions. The optical / redox properties and the electronic structure of these new pi-systems were studied experimentally and computationally. Taking advantage of the luminescence of these derivatives, a blue emitting OLED has been prepared highlighting that these novel pi-conjugated P-heterocycles appear as promising building blocks for solid-state lightning applications.

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