Category: 239075-02-6

Pouchain, Laurent published the artcileQuaterthiophenes with Terminal Indeno[1,2-b]thiophene Units as p-Type Organic Semiconductors, Synthetic Route of 239075-02-6, the publication is Journal of Organic Chemistry (2009), 74(3), 1054-1064, database is CAplus and MEDLINE.

Quaterthiophenes 4T, Oct-4T, and Tol-4T based on a central 2,2′-bithiophene core α,ω-terminated with 4,4-unsubstituted and 4,4-disubstituted n-octyl or p-tolyl indeno[1,2-b]thiophene were synthesized by Stille or Miyaura-Suzuki couplings. Compound 4T was also synthesized by an alternative route involving a soluble precursor bearing solubilizing trimethylsilyl groups which were eliminated in the last step. The electronic properties of the compounds were analyzed by cyclic voltammetry, UV-visible absorption and fluorescence emission spectroscopy. Thermal evaporation of 4T and Oct-4T leads to crystalline thin films and UV-visible absorption and x-ray diffraction data for these films suggest that the mols. adopt a quasi-vertical orientation onto the substrate. Strong π-π intermol. interactions were observed for 4T but not for mols. Oct-4T due to the presence of n-octyl chains. Sublimed thin films of Tol-4T show an amorphous character. The characterization of field-effect transistors fabricated from these three materials gave a hole-mobility of 2.2 × 10^-2 cm² V^-1 s^-1 with an on/off ratio of 2.2 × 10⁴ for 4T while no field-effect was observed for Oct-4T and Tol-4T.

Journal of Organic Chemistry published new progress about 239075-02-6. 239075-02-6 belongs to alcohols-buliding-blocks, auxiliary class Thiophene,Boronic acid and ester,Boronate Esters, name is 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene, and the molecular formula is C20H28B2O4S2, Synthetic Route of 239075-02-6.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Klingstedt, Therese published the artcileSynthesis of a library of oligothiophenes and their utilization as fluorescent ligands for spectral assignment of protein aggregates, Category: alcohols-buliding-blocks, the publication is Organic & Biomolecular Chemistry (2011), 9(24), 8356-8370, database is CAplus and MEDLINE.

Mol. probes for selective identification of protein aggregates are important to advance the understanding of the mol. pathogenesis underlying protein aggregation diseases. Here the authors report the chem. design of a library of anionic luminescent conjugated oligothiophenes (LCOs), which can be utilized as ligands for detection of protein aggregates. Certain mol. requirements were shown to be necessary for detecting (i) early nonthioflavinophilic protein assemblies of Aβ1-42 and insulin preceding the formation of amyloid fibrils and (ii) for obtaining distinct spectral signatures of the two main pathol. hallmarks observed in human Alzheimer’s disease brain tissue (Aβ plaques and neurofibrillary tangles). The authors’ findings suggest that a superior anionic LCO-based ligand should have a backbone consisting of five to seven thiophene units and carboxyl groups extending the conjugated thiophene backbone. Such LCOs will be highly useful for studying the underlying mol. events of protein aggregation diseases and could also be utilized for the development of novel diagnostic tools for these diseases.

Organic & Biomolecular Chemistry published new progress about 239075-02-6. 239075-02-6 belongs to alcohols-buliding-blocks, auxiliary class Thiophene,Boronic acid and ester,Boronate Esters, name is 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene, and the molecular formula is C20H28B2O4S2, Category: alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts