Yuan, Yuping published the artcileEnergy level tuning of polythiophene derivative by click chemistry-type postfunctionalization of side-chain alkynes, Safety of 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2011), 49(1), 225-233, database is CAplus.
A polythiophene derivative substituted with electron-rich alkynes as a side chain was synthesized using the Suzuki polycondensation reaction. The electron-rich alkynes underwent the “click chem.”-type quant. addition reaction with strong acceptor mols., such as tetracyanoethylene (TCNE) and 7,7,8,8-tetracyanoquinodimethane (TCNQ), resulting in the formation of donor-acceptor chromophores. All polymers showed excellent solubilities in the common organic solvents as well as good thermal stabilities with their 5% decomposition temperatures exceeding 230 °C. The TCNE-/TCNQ-adducted polymers displayed well-defined charge-transfer (CT) bands in the low energy region. The CT energy of the TCNE-adducted polymer was 2.56 eV (484 nm), which was much greater than that of the TCNQ-adducted polymer [1.65 eV (750 nm)]. This result was supported by the electrochem. measurements. The electrochem. band gaps of the TCNE-adducted polymers were much greater than those of the corresponding TCNQ-adducted polymers. Furthermore, the HOMO and LUMO energy levels, determined from the first oxidation and first reduction peak potentials, resp., decreased with the increasing acceptor addition amount All these results suggested that the energy levels of the polythiophene derivative can be tuned by varying the species and amount of the acceptor mols. using this postfunctionalization method. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010.
Journal of Polymer Science, Part A: Polymer 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 C12H14S, Safety of 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene.
Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts