38215-38-2

Usage

Uses

Used in Organic Electronics:
4,4'-DIETHYNYLBIPHENYL is used as a key component in the development of organic light-emitting diodes (OLEDs) for its electronic and optical properties that contribute to the performance and efficiency of these devices.
Used in the Synthesis of Conjugated Polymers:
In the field of organic electronics, 4,4'-DIETHYNYLBIPHENYL serves as a building block for the synthesis of conjugated polymers, which are essential for creating materials with tailored electronic and optoelectronic properties.
Used in the Synthesis of Small Molecule Organic Semiconductors:
4,4'-DIETHYNYLBIPHENYL is also utilized in the synthesis of small molecule organic semiconductors, expanding its applications in electronic devices and systems that require high-performance semiconductor materials.
Used in Research and Development:
Due to its unique properties and stability, 4,4'-DIETHYNYLBIPHENYL is used in research and development for exploring new applications and improving existing technologies in the field of organic electronics.

Upstream product

• 787-69-9 4,4'-diacetylbiphenyl 
• 29619-44-1 4,4'-bis[(trimethylsilyl)ethynyl]biphenyl 
• 3001-15-8 4,4'-diiodobiphenyl 
• 1066-54-2 trimethylsilylacetylene 
• 994-89-8 tributylethynyltin 
• 92-86-4 4-(4-bromophenyl)bromobenzene 
• 92-52-4 biphenyl 
• 121264-37-7 4,4'-([1,1'-biphenyl]-4,4'-diyl)bis(2-methylbut-3-yn-2-ol) 
• 60-29-7 diethyl ether 
• 1625-89-4 4,4'-bis(trimethylsilyl)biphenyl 

Downstream Products

• 103778-14-9 1,4-Bis-(4'-ethinyl-p-biphenylyl)-diacetylen 
• 245657-01-6 4,4'-bis(pyridin-4-ylethynyl)-1,1'-biphenyl 
• 263012-61-9 4,4'-bis(5-ethynyl-2-chloropyridyl)1,1'-biphenyl 
• 774581-05-4 1,1'-diacetyl-3,3'-dihydroxy-1,3,1',3'-tetrahydro-[3,3']biindolyl-2,2'-dione 
• 851984-10-6 4,4'-bis[2-(3,4-dibutyl-2-thienyl)ethynyl]biphenyl 
• 901452-03-7 C₃₂H₁₈O₈ 
• 935550-56-4 4,4'-bis(2-diphenylphosphinoethynyl)biphenyl 

Relevant academic research and scientific papers

Synthesis of organoplatinum poly (dendrimer)s: Pronounced effect of size and geometry of small organoplatinum linkers on the copolymerization efficiency with bifunctional dendritic macromonomers

The copolymerizations of two series of surface functionalized bis(acetylene) G1-G3 dendrimers, one (S-Gn) having a structural rigid skeleton and the other (L-Gn) a relatively more flexible architecture, with two platinum linkers, cis-[(Et2PCH2CH2PEt 2)PtCl2] (2) and [Cl-(Et3P)2Pt- C≡C-P-C6H4-], (3) were investigated. For both series of dendrimers, only linear and/or cyclic oligomers were formed when the cis-platinum linker 2 was used. However, high molecular weight (100-200 kD) organoplatinum poly(dendrimer)s were obtained from both series when the elongated linear rod-liked platinum linker 3 was employed and the formation of cyclic oligomers was greatly suppressed for both the structural rigid S-Gn and the structural flexible L-Gn series. These results are in sharp contrast to our earlier findings (S.-Y. Cheung, H.-F. Chow, T. Ngai, X. Wei, Chem. Eur. J. 2009, 75, 2278-2288) obtained by using a shorter linear platinum linker trans-[Pt-(PEt3)2Cl2] (1), where a larger amount of cyclic oligomers was formed from the structural flexible L-Gn dendrimers. A model was proposed to rationalize how the geometry and size of the platinum linker could control the copolymerization behaviours of these dendritic macromonomers.

Simple synthesis, outstanding thermal stability, and tunable light-emitting and optical-limiting properties of functional hyperbranched polyarylenes

The synthesis, thermal stability and optical properties of functional hyperbranched polyarylenes were reported. The molecular structure of the polymers was determined by nuclear magnetic resonance (NMR) spectroscopy. The spectra showed that the hyperbranched polymers possessed a random molecular composition, an irregular stereostructure and a rigid core architecture. The optical limiting and tunable light emitting properties of the polymers make them suitable to be used for high-tech applications.

Synthetic control of the pore dimension and surface area in conjugated microporous polymer and copolymer networks

A series of rigid microporous poly(aryleneethynylene) (PAE) networks was synthesized by Sonogashira-Hagihara coupling chemistry. PAEs with apparent Brunauer-Emmet-Teller surface areas of more than 1000 m2/g were produced. The materials were found to have very good chemical and thermal stability and retention of microporosity under a variety of conditions. It was shown that physical properties such as micropore size, surface area, and hydrogen uptake could be controlled in a "quantized" fashion by varying the monomer strut length, as for metal-organic and covalent organic frameworks, even though the networks were amorphous in nature. For the first time, it was demonstrated that these properties can also be fine-tuned in a continuous manner via statistical copolymerization of monomer struts with differing lengths. This provides an unprecedented degree of direct synthetic control over micropore properties in an organic network.

Micellar and vesicular nanoassemblies of triazole-based amphiphilic probes triggered by mercury(II) ions in a 100% aqueous medium

ABA-type amphiphiles bearing a triazole-based aromatic block were easily synthesized using click chemistry, which act as fluorescent turn-off Hg2+-chemoprobes in an aqueous solution. Interestingly, the metal-binding process of amphiphiles induc

Conformational Tuning of the Intramolecular Electronic Coupling in Molecular-Wire Biruthenium Complexes Bridged by Biphenyl Derivatives

The synthesis and characterization of a series of biphenyl-derived binuclear ruthenium complexes with terminal {RuCl(CO)(PMe3)3} moieties and different structural arrangements of the phenyl rings are reported. Electrochemical studies

Allosteric regulation of rotational, optical and catalytic properties within multicomponent machinery

The reversible transformation of multicomponent nanorotors (ROT-1, k298 = 44 kHz or ROT-2, k298 = 61 kHz) to the "dimeric"supramolecular structures (DS-1 or DS-2, k298 = 0.60 kHz) was triggered by a stoichiometric chemical stimulus. Simple coordination changes at the central phenanthroline of the molecular device by altering metal ions (Cu+ → Zn2+) or stoichiometry (Cu+, 1 equiv. → 0.5 equiv.) affected the terminal zinc(ii) porphyrin units, the active sites within the machinery, changing rotational, catalytic and optical properties. In presence of added pyrrolidine, the nanorotor ROT-1 was inactive for catalysis whereas formation of the dimeric supramolecular structures DS-1 initiated a Michael addition reaction by releasing the organocatalyst from the porphyrin sites. This catalytic machinery (ROT-1 ? DS-1) proved to reproducibly work over two full cycles using allosteric OFF/ON control of catalysis. This journal is

Understanding the Role of Parallel Pathways via In-Situ Switching of Quantum Interference in Molecular Tunneling Junctions

This study describes the modulation of tunneling probabilities in molecular junctions by switching one of two parallel intramolecular pathways. A linearly conjugated molecular wire provides a rigid framework that allows a second, cross-conjugated pathway

Modular Approach to Kekulé Diradicaloids Derived from Cyclic (Alkyl)(amino)carbenes

A modular approach for the synthesis of Kekulé diradicaloids is reported. The key step is the insertion of a carbene, namely, a cyclic (alkyl)(amino)carbene (CAAC), into the C-H bonds of two terminal alkynes linked by a spacer. Subsequent hydride abstraction, followed by two-electron reduction of the corresponding bis(iminium) salts, affords the desired diradicaloids. This synthetic route readily allows for the installation of communicating spacers, featuring different degrees of aromaticity and lengths, and gives the possibility of generating unsymmetrical compounds with two different CAACs. Electron paramagnetic resonance (EPR), NMR, UV-vis, and X-ray studies in combination with quantum-chemical calculations give insight into the electronic nature of the deeply colored Kekulé diradicaloids. They feature a singlet ground state with varying degrees of diradical character in combination with small singlet/triplet gaps. Upon lengthening of the spacer, the properties of the compounds approach those of monoradicals in which steric protection of the propargyl radical moiety is necessary to inhibit decomposition pathways. Most of these diradicaloids are stable at room temperature, both in solution and in the solid state, but are highly oxygen-sensitive. They represent the first diradicaloids derived from iminium salts.

Efficient Homocoupling of Aryl- and Alkenylboronic Acids in the Presence of Low Loadings of [{Pd(μ-OH)Cl(IPr)} 2 ]

NHC-palladium(II) complex [{Pd(μ-OH)Cl(IPr)} 2 ] (IPr = bis(2,6-diisopropylphenyl)imidazolin-2-ylidene) catalyzes the oxidative coupling of a broad spectrum of aryl- and alkenylboronic acids at loadings down to 5 ppm. At the concentration of 0.05 mol% the catalyst permits an efficient reaction under base-free conditions.

Highly Stable, Low Gas Crossover, Proton-Conducting Phenylated Polyphenylenes

Two classes of novel sulfonated phenylated polyphenylene ionomers are investigated as polyaromatic-based proton exchange membranes. Both types of ionomer possess high ion exchange capacities yet are insoluble in water at elevated temperatures. They exhibit high proton conductivity under both fully hydrated conditions and reduced relative humidity, and are markedly resilient to free radical attack. Fuel cells constructed with membrane-electrode assemblies containing each ionomer membrane yield high in situ proton conductivity and peak power densities that are greater than obtained using Nafion reference membranes. In situ chemical stability accelerated stress tests reveal that this class of the polyaromatic membranes allow significantly lower gas crossover and lower rates of degradation than Nafion benchmark systems. These results point to a promising future for molecularly designed sulfonated phenylated polyphenylenes as proton-conducting media in electrochemical technologies.