211235-87-9Relevant articles and documents
Effect of 3,4-ethylenedioxy-extension of thiophene core on the DNA/RNA binding properties and biological activity of bisbenzimidazole amidines
Stolic, Ivana,Miskovic, Katarina,Magdaleno, Anahi,Silber, Ariel Mariano,Piantanida, Ivo,Bajic, Miroslav,Glavas-Obrovac, Ljubica
, p. 2544 - 2554 (2009)
Novel bisbenzimidazoles (4-6), characterized by 3,4-ethylenedioxy-extension of thiophene core, revealed pronounced affinity and strong thermal stabilization effect toward ds-DNA. They interact within ds-DNA grooves as dimmers or even oligomers and agglome
Azatruxene-Based, Dumbbell-Shaped, Donor–π-Bridge–Donor Hole-Transporting Materials for Perovskite Solar Cells
Illicachi, Luis A.,Urieta-Mora, Javier,Calbo, Joaquín,Aragó, Juan,Igci, Cansu,García-Benito, Inés,Momblona, Cristina,Insuasty, Braulio,Ortiz, Alejandro,Roldán-Carmona, Cristina,Molina-Ontoria, Agustín,Ortí, Enrique,Martín, Nazario,Nazeeruddin, Mohammad Khaja
supporting information, p. 11039 - 11047 (2020/08/03)
Three novel donor–π-bridge–donor (D-π-D) hole-transporting materials (HTMs) featuring triazatruxene electron-donating units bridged by different 3,4-ethylenedioxythiophene (EDOT) π-conjugated linkers have been synthesized, characterized, and implemented in mesoporous perovskite solar cells (PSCs). The optoelectronic properties of the new dumbbell-shaped derivatives (DTTXs) are highly influenced by the chemical structure of the EDOT-based linker. Red-shifted absorption and emission and a stronger donor ability were observed in passing from DTTX-1 to DTTX-2 due to the extended π-conjugation. DTTX-3 featured an intramolecular charge transfer between the external triazatruxene units and the azomethine–EDOT central scaffold, resulting in a more pronounced redshift. The three new derivatives have been tested in combination with the state-of-the-art triple-cation perovskite [(FAPbI3)0.87(MAPbBr3)0.13]0.92[CsPbI3]0.08 in standard mesoporous PSCs. Remarkable power conversion efficiencies of 17.48 percent and 18.30 percent were measured for DTTX-1 and DTTX-2, respectively, close to that measured for the benchmarking HTM spiro-OMeTAD (18.92 percent), under 100 mA cm?2 AM 1.5G solar illumination. PSCs with DTTX-3 reached a PCE value of 12.68 percent, which is attributed to the poorer film formation in comparison to DTTX-1 and DTTX-2. These PCE values are in perfect agreement with the conductivity and hole mobility values determined for the new compounds and spiro-OMeTAD. Steady-state photoluminescence further confirmed the potential of DTTX-1 and DTTX-2 for hole-transport applications as an alternative to spiro-OMeTAD.
Palladium-catalyzed C-H formylation of electron-rich heteroarenes through radical dichloromethylation
Bao, Yan,Wang, Jian-Yong,Zhang, Ya-Xuan,Li, Yan,Wang, Xi-Sheng
supporting information, p. 3147 - 3150 (2018/07/13)
A novel palladium-catalyzed C-H formylation of electron-rich N-, O-, and S-containing heteroarenes has been developed. The key to success is that the commercially available BrCHCl2 was used as a stoichiometric carbonyl source. Mechanistic investigations indicated that different from the known Reimer-Tiemann reaction, this net C-H formylation proceeded through an electrophilc radical-type path.