Hexagonal Packing of Oligo(m-phenylene ethynylene)s in the Solid State:  Helical Nanotubules

2000 ◽  
Vol 122 (25) ◽  
pp. 6134-6135 ◽  
Author(s):  
Matthew J. Mio ◽  
Ryan B. Prince ◽  
Jeffrey S. Moore ◽  
Christian Kuebel ◽  
David C. Martin
Keyword(s):  
Solid State ◽  
Phenylene Ethynylene ◽  
Hexagonal Packing

Solid-State Chiral Supramolecular Organic Fluorophore Having a π-Conjugated Phenylene Ethynylene Unit

2009 ◽  
Vol 2009 (33) ◽  
pp. 5760-5764 ◽  
Author(s):  
Takafumi Kinuta ◽  
Kensaku Kamon ◽  
Takunori Harada ◽  
Yoko Nakano ◽  
Nobuo Tajima ◽  
...  
Keyword(s):  
Solid State ◽  
Phenylene Ethynylene ◽  
Organic Fluorophore

Synthesis and Solid-State Investigations of Oligo-Phenylene-Ethynylene Structures with Halide End-Groups

2012 ◽  
Vol 2012 (14) ◽  
pp. 2738-2747 ◽  
Author(s):  
Nicolas M. Jenny ◽  
Hong Wang ◽  
Markus Neuburger ◽  
Harald Fuchs ◽  
Lifeng Chi ◽  
...  
Keyword(s):  
Solid State ◽  
Phenylene Ethynylene ◽  
End Groups

Temperature dependence of charge transport in solid-state molecular junctions based on oligo(phenylene ethynylene)s

2020 ◽  
Vol 31 (16) ◽  
pp. 164001
Author(s):  
Yuqing Liu ◽  
Mianzeng Zhong ◽  
Elisabeth Ffion Downey ◽  
Xiaoyao Chen ◽  
Tao Li ◽  
...  
Keyword(s):  
Solid State ◽  
Charge Transport ◽  
Temperature Dependence ◽  
Molecular Junctions ◽  
Phenylene Ethynylene

scholarly journals Synthesis, characterization and solid-state photoluminescence studies of six alkoxy phenylene ethynylene dinuclear palladium(ii) rods

2015 ◽  
Vol 44 (9) ◽  
pp. 4003-4015 ◽  
Author(s):  
João Figueira ◽  
Wojciech Czardybon ◽  
José Carlos Mesquita ◽  
João Rodrigues ◽  
Fernando Lahoz ◽  
...  
Keyword(s):  
Solid State ◽  
Emission Intensity ◽  
Phenylene Ethynylene ◽  
Pd Complexes ◽  
Photoluminescence Studies

Solid-state photoluminescence studies of six dinuclear [PdCl(PEt3)2]) rods revealed a decrease in the emission intensity when moving from the free ligands to the Pd complexes.

Supramolecular Organization of Oligo(m-phenylene ethynylene)s in the Solid-State

1999 ◽  
Vol 121 (25) ◽  
pp. 5933-5939 ◽  
Author(s):  
Peggy-Jean Prest ◽  
Ryan B. Prince ◽  
Jeffrey S. Moore
Keyword(s):  
Solid State ◽  
Supramolecular Organization ◽  
Phenylene Ethynylene

Emission Quenching of a Poly(Phenylene Ethynylene) (PPE) in the Solid State

2005 ◽  
Vol 888 ◽  
Author(s):  
Wayne N. George ◽  
Joachim H. G. Steinke ◽  
John C. de Mello ◽  
Mark Giles ◽  
Iain McCulloch
Keyword(s):  
Solid State ◽  
Silica Gel ◽  
Small Molecule ◽  
Phenylene Ethynylene ◽  
Conjugated Polyelectrolyte ◽  
Quenching Process ◽  
Emission Quenching ◽  
Quencher Concentration

ABSTRACTThe ability of a poly(phenylene ethynylene) conjugated polyelectrolyte to detect a small molecule quencher in the solid state was assessed by coating the polymer onto a plastic-backed, non-fluorescent, silica-gel TLC plate. The efficiency of the emission quenching process was quantified by noting the resulting loss of emission with increasing quencher concentration, in accordance with the Stern-Volmer relation. The emission quenching induced by the addition of the analyte occurred with Stern-Volmer constants in the range of 103 M−1.

Solid-state sensory properties of CALIX-poly(phenylene ethynylene)s toward nitroaromatic explosives

2012 ◽  
Vol 161 (1) ◽  
pp. 702-713 ◽  
Author(s):  
Alexandra I. Costa ◽  
Hugo D. Pinto ◽  
Luís F.V. Ferreira ◽  
José V. Prata
Keyword(s):  
Solid State ◽  
Sensory Properties ◽  
Phenylene Ethynylene ◽  
Nitroaromatic Explosives

scholarly journals The Helical Structure of Diallylamine in the Solid State

2019 ◽  
Vol 50 (4) ◽  
pp. 422-427
Author(s):  
Chloe J. Pugh ◽  
Craig M. Robertson ◽  
Alexander Steiner
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Van Der Waals ◽  
Helical Structure ◽  
Van Der Waals Interactions ◽  
Asymmetric Unit ◽  
Length Scales ◽  
Hexagonal Packing

Abstract In the solid state diallylamine forms supramolecular helices with four molecules per pitch that are held together by hydrogen bonding. The helical structure is the result of competing length scales at which hydrogen bonding and second-neighbour Van-der-Waals interactions occur. The structure features two crystallographically independent helices and four unique molecules in the asymmetric unit (Z′ = 4). The high Z′ value is partly a consequence of the centrosymmetric pseudo-hexagonal packing of helical columns, which is incompatible with helical spacegroup symmetries. Graphic Abstract

scholarly journals Synthesis and Acid-Responsiveness of an Insulated π-Conjugated Polymer Containing Spiropyrans in Its Backbone

Molecules ◽  
2019 ◽  
Vol 24 (7) ◽  
pp. 1301 ◽  
Author(s):  
Hiromichi V. Miyagishi ◽  
Takashi Tamaki ◽  
Hiroshi Masai ◽  
Jun Terao
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Quantum Yield ◽  
Conjugated Polymer ◽  
Luminescence Quenching ◽  
Polymer Chains ◽  
Phenylene Ethynylene ◽  
Complete Conversion

A π-conjugated polymer containing spiropyrans (SPs), which could be almost completely converted to protonated merocyanines (MCH+) and back to the SP form by adding an acid and a base, respectively, was developed. The insulation of the π-conjugated polymer, referred to as insulated spiropyran-containing poly(p-phenylene ethynylene) (ins-SP-PPE), using permethylated α-cyclodextrins (PM α-CD) suppressed the π-π interaction between the polymer chains containing MCH+, and the installation of PM α-CD improved the switching ability of SPs. The polymer exhibited repeatable acidochromism with almost complete conversion between the SP and MCH+ forms. Photoluminescence measurements were conducted and the acid-induced luminescence quenching of the polymer in the solution was observed, which stemmed from energy transfer from the PPE to MCH+ moieties. In the solid state, the quantum yield of ins-SP-PPE was more than twice that of the uninsulated polymer, which derived from the insulation effects. The acid-induced luminescence quenching was also observed in the solid state.

Preparation of Thin Cadmium Telluride Samples for Electron Microscope Studies

1974 ◽  
Vol 32 ◽  
pp. 548-549
Author(s):  
T. J. Magee ◽  
J. Peng ◽  
J. Bean
Keyword(s):  
Electron Microscope ◽  
Sulfuric Acid ◽  
Solid State ◽  
Sample Preparation ◽  
Cadmium Telluride ◽  
Potassium Dichromate ◽  
Optical Components ◽  
The Past ◽  
Solid State Devices

Cadmium telluride has become increasingly important in a number of technological applications, particularly in the area of laser-optical components and solid state devices, Microstructural characterizations of the material have in the past been somewhat limited because of the lack of suitable sample preparation and thinning techniques. Utilizing a modified jet thinning apparatus and a potassium dichromate-sulfuric acid thinning solution, a procedure has now been developed for obtaining thin contamination-free samples for TEM examination.

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