457931-26-9

Upstream product

• 61676-62-8 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 
• 156028-40-9 1,4-dibromo-2,5-dioctyloxyphenylene 
• 123-31-9 hydroquinone 
• 76-09-5 2,3-dimethyl-2,3-butane diol 
• 121-43-7 Trimethyl borate 
• 145483-68-7 1,4-diiodo-2,5-dioctyloxybenzene 
• 25015-63-8 4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane 
• 67399-94-4 1,4-bis(octyloxy)benzene 
• 111-83-1 1-bromo-octane 

Relevant academic research and scientific papers

Copolymers of 3,4-ethylenedioxythiophene and of pyridine alternated with fluorene or phenylene units: Synthesis, optical properties, and devices

We report the synthesis of four conjugated copolymers based on alkylated fluorene or phenylene units which band gap is tuned by the regular insertion of an electron-donating or electron-withdrawing unit, (3,4-ethylenedioxy)thiophene and pyridine, respecti

2,2′-biimidazole-based conjugated polymers as a novel fluorescent sensing platform for pyrophosphate anion

Three novel conjugated polymers based on 2,2′-biimidazole have been successfully designed and synthesized through the Suzuki coupling reactions, and their fluorescence sensing ability to metal ions and anions was investigated. The emission of the two polymers with hydrophilic side chains can be efficiently quenched by Cu2+ through a photoinduced electron transfer process. Moreover, the polymer-Cu2+ complexes exhibit excellent turn on sensing properties for detection of pyrophosphate (PPi) anion. These complex sensors possess high selectivity avoiding the interference from other anions, very fast response (less than 3 min) to PPi, and the detection limit of about 0.17 ppm. In addition, the linear detection range of PPi can be tuned conveniently by changing the amount of Cu2+ ions. Thus, the conjugated polymers can be used as a novel fluorescent sensing platform, and this work provides a new strategy for the development of PPi sensors.

Dialkyl-substituted naphtho-dioxodibenzothiophene monomer and preparation method thereof and polymer containing dialkyl-substituted naphtho-dioxodibenzothiophene unit and application of polymer

The invention discloses a dialkyl-substituted naphtho-dioxodibenzothiophene monomer and a preparation method thereof and a polymer containing a dialkyl-substituted naphtho-dioxodibenzothiophene unit and the application of the polymer. A high-absorption electron unit -SO2- exists in the dialkyl-substituted naphtho-dioxodibenzothiophene monomer, and thus the electron affinity of a molecule can be improved. Through introducing of an unsymmetrical substituting condensed ring structure and an alkyl group, the electron affinity of the monomer can be lowered, and meanwhile, solubleness of the monomer in organic solvent is improved greatly. The dialkyl-substituted naphtho-dioxodibenzothiophene monomer obtains a homopolymer or a copolymer containing the dialkyl-substituted naphtho-dioxodibenzothiophene unit through Suzuki or Stille or Yamamoto polymerization reaction, and the obtained polymer has good solubleness in the organic solvent, is suitable for solution processing, and has wide application prospects in preparation of electroluminescent devices, organic solar cells and organic field effect transistors.

Synthesis and optical properties of a poly(2′,5′-dioctyloxy-4,4′,4″- terphenylenevinylene) with high content of (Z) vinylene units

Poly(2′,5′-dioctyloxy-4,4′,4″-terphenylenevinylene) with (E) configuration of the vinylene double bonds was prepared by Suzuki-Miyaura polymerization of (E)-4,4′-dibromostilbene and 2,5-dioctyloxy-1,4-benzenediboronic acid. Attempts to extend this simple procedure to the synthesis of the polymer with (Z) configuration, starting from (Z)-4,4′-dibromostilbene, were unsuccessful. However, the use of (Z)-4,4′-diiodostilbene and a careful choice of Pd catalyst and experimental conditions, lead to a material with a >95/5 (Z)/(E) ratio of vinylene units. The investigation of optical properties of both the (E) and (Z) polymers evidenced that (Z) linkages act as defects which reduce the effective conjugation length in the polymer backbone.