177990-99-7

Upstream product

• 183953-57-3 C₉H₅IO₂ 
• 5720-07-0 4-methoxyphenylboronic acid 
• 630104-26-6 3,3-diethyl-1-(4-iodophenyl)triaz-1-ene 
• 540-37-4 p-aminoiodobenzene 
• 766-96-1 4-bromo-1-ethynylbenzene 
• 696-62-8 para-iodoanisole 
• 189099-57-8 1-bromo-4-[2-(4-methoxyphenyl)ethynyl]benzene 
• 624-38-4 para-diiodobenzene 
• 768-60-5 4-methoxyphenylacetylen 

Downstream Products

• 530158-45-3 1-bromo-4-[4-[(4-methoxyphenyl)ethynyl]phenylethynyl]benzene 
• 191094-20-9 1-ethynyl-4-((4-methoxyphenyl)ethynyl)benzene 

Relevant academic research and scientific papers

Thermochromic and highly tunable color emitting bis-tolane based liquid crystal materials for temperature sensing devices

The luminescent compounds based on the D-π-A system consisting of substituted pyrrole as acceptor, π conjugated bis-tolane and -OMe, -N(CH3)2, -N(Ph)2 at termini acting as donors have been synthesized. On heating, all the compounds exhibited distinct mesomorphic behavior depending upon donating groups and substituents at the acceptor unit. These luminescent liquid crystals exhibited emission from blue, green to reddish orange with high quantum efficiency in solid as well in solutions state. We discovered the rarely reported three membered ring interactions between the Br at alpha position of pyrrole and acetylene bond and their impact on luminescence efficiency via single crystal structure of 2Br–CN–N(CH3)2 and 2Br–CN–N(Ph)2. Furthermore, the thermochromic behavior of these LLCs compounds has been explored, especially CN–N(Ph)2, its reddish orange emission changed to blue at 240 °C–250 °C in pure state, while in dimethyl silicone polymer (PDMS) film, it switched to blue at 200 °C and completely vanished at 240 °C. These simple and highly emissive compounds display outstanding thermochromic properties above 200 °C, thus will be potentiality valuable for high temperature sensing devices.

Tripodaphyrins, a new class of porphine derivatives designed for nanofabrication

Tripodaphyrins are tetrahedral or pyramidal assemblies in which a porphyrin macrocycle, situated on the top of the molecule, is 'supported' by three 'legs' consisting of linear arrays of rigid constitutive elements. The present work describes the synthesis of two representative examples (1 and 2) of this novel class of molecules.

Synthesis and structure of [2.2]paracyclophanes incorporating alkyne units in the extended linear chain

The novel [2.2]paracyclophanes 4-7 with an extended π-conjugation due to the presence of a linear arylethynyl chain have been synthesized by the Pd-catalyzed Sonogashira coupling reaction.

4-iodophenyl substituted carborane derivative and preparation method thereof

The invention discloses a 4-iodophenyl carborane derivative and a preparation method thereof. Commercialized organic reagents 4-iodoaniline and a diacetonitrile decaborate complex and several easily-synthesized substituted alkynes are adopted as the start

Synthesis of molecular chains: Application of cross-coupling and bromo by iodo exchange reactions

The synthesis of a series of molecular chains by use of C-S, C-N and C-Alkyne cross coupling, as well as bromo by iodo exchange reactions, has been reported. Two different types of chains R-C6H4-S-C6H4-CC-C6H4-NH-C6H4-Br, and R-C6H4-S-C6H4-NH-C6H4-CC-C6H4-Br (R=MeO, CN, NO2) could be obtained starting from the same thioether but applying different reaction sequences. Compounds R-C6H4-CC-C6H4-S-C6H4-NH-C6H4-Br were prepared from diaryl acetylenes after two bromo by iodo replacements alternated with a C-S and a C-N cross coupling.

Palladium-catalyzed decarboxylative cross-coupling of alkynyl carboxylic acids with arylboronic acids

A highly efficient and mild palladium-catalyzed decarboxylative cross-coupling of aryl boronic acids and alkynyl carboxylic acids for the synthesis of unsymmetrical substituted alkynes is described for the first time.

Synthesis of nanometer-sized homo- and heteroorganometallic tripodaphyrins

Tripodaphyrins are tetrahedral or pyramidal assemblies in which a porphyrin macrocycle situated on the top of the molecule is 'supported' by three 'legs' consisting of linear arrays of covalently linked rigid constitutive elements. The edge-length at the 'base' of the molecules which have been synthesized until now lies in the range from 3.2 to 6.5 nm. In some tripodaphyrins (3a-c) the chromophore situated on the top of the molecule differs on the complexed metal ion from the other three, which are located at the ends of the 'legs'. Owing to the dimensions of the molecules, no intramolecular interaction between the chronophores is observed, even in the presence of a paramagnetic Cu(II) chelate.