Core-extended rylene dyes via thiophene annulation.

Dibenzopentarylenebis(dicarboximide)s: Novel near-infrared absorbing dyes.

The facile synthesis of the new class of core-extended rylene chromophores, dibenzopentarylenebis(dicarboximide)s, having an intense absorption at 1020-1040 nm, is presented.

Naphtho[2,3-b]thiophene diimide (NTI): a mono-functionalisable core-extended naphthalene diimide for electron-deficient architectures

Naphthalene diimide (NDI, Fig. 1), one of the imide-based p-extended structures, has been widely utilized in chromophores, supramolecular architectures, and electronic materials. One of the effective ways to control the opto/electronic properties of NDI is to extend the p-system with fused aromatic or heteroaromatic ring(s), which affords core-extended NDIs, often referred as cNDIs. Whereas mos...

Synthesis of carbazole-based hetero-core-modified porphyrins.

Cu(I)-mediated annulation reaction of a 1,1'-(1,3-butadiyne)-8,8'-(2,5-thiophene)-bridged carbazole dimer 10 with amines provided the N-substituted carbazole-based isophlorines 11a-11c. A similar annulation reaction with selenium in the presence of hydrazine monohydrate afforded hetero-core-modified isophlorine 12. The oxidation of 12 generated the corresponding 21-selena-23-thiaporphyrin 13, w...

Synthesis and Application of Water-Soluble Dendronized Rylene Dyes

Rhodanine-3-acetic acid and π-extended tetrathiafulvalene (exTTF) based systems for Dye- Sensitized Solar Cells

We report here the synthesis, electrochemical and photophysical properties of a series of novel exTTF-based organic dyes (3 and 7a,b) as well as their application in dye-sensitized solar cells (DSSCs). In the three designed dyes, the electron-donor exTTF group is connected to the rhodanine-3-acetic acid electron-acceptor unit through vinyl or vinyl-thiophene spacers. The electrochemical studies...