Depositing a fused-ring thieno-thiophene polymer on different self-assembled monolayers indicates that varying the SAM surface energy changes the FET mobility and turn-on voltage by varying polymer crystallinity at the buried interface.

The synthesis, characterization, and electropolymerization of a series of extended fused-ring thieno[3,4-b]pyrazine-based terthienyls are reported. The target terthienyls contain a central extended thieno[3,4-b]pyrazine analogue containing 2-thienyl units at the reactive α-positions of the central thiophene. The extended fused-ring thieno[3,4-b]pyrazine analogues studied include acenaphtho[1,2-...

A series of platinum-acetylide copolymers with thiophene, selenophene, and tellurophene have been synthesized and studied. Photoluminescence experiments show that polymers undergo intersystem crossing to triplet states, leading to phosphorescence. The observed phosphorescence decreases in intensity moving down the group. DFT calculations are used to further understand the optical properties.

CASSCF and multireference MP2 calculations were carried out on thiophene-S-oxide (TO) and selenophene-Se-oxide (SeO), comparing the energies of the ground state to the first two electronically excited singlet and triplet states, using constrained optimizations and multiple fixed S-O or Se-O distances. For both molecules, one of the two triplet states smoothly dissociates to yield O((3)P) with l...

In this work, two new low-bandgap electron acceptors NITI-SeS and NITI-SSe that use electron-rich 2-alkylselenopheno[3,4-b]thiophene 2-alkylselenopheno[2,3-c]thiophene with different quinoidal-resonance effect as π-bridges to link the weak electron-donating indenoindene core strong electron-accepting INCN-2F terminal are designed synthesized. has a selenium atom in main ring shows an obviously ...

We provide facile synthetic methods of 1,1′-diaryl-4,4′-bibenzo[ c ]thiophene derivatives by Stille or Suzuki coupling reaction.

The use of a bromo-substituent as blocking group at the C2-position of 3-substituted thiophenes allows the regioselective introduction of aryl substituents at C5-position via Pd-catalysed direct arylation. With 1 mol % of a phosphine-free Pd catalyst, KOAc as the base and DMA as the solvent and various electron-deficient aryl bromides as aryl sources, C5-(hetero)arylated thiophenes were synthes...