Structural and quantum chemical analysis of exciton coupling in homo- and heteroaggregate stacks of merocyanines was written by Bialas, David;Zitzler-Kunkel, Andre;Kirchner, Eva;Schmidt, David;Wuerthner, Frank. And the article was included in Nature Communications in 2016.Safety of 3-Ethylthiophene This article mentions the following:
Exciton coupling is of fundamental importance and determines functional properties of organic dyes in (opto-)electronic and photovoltaic devices. Here we show that strong exciton coupling is not limited to the situation of equal chromophores as often assumed. Quadruple dye stacks were obtained from two bis(merocyanine) dyes with same or different chromophores, resp., which dimerize in less-polar solvents resulting in the resp. homo- and heteroaggregates. The structures of the quadruple dye stacks were assigned by NMR techniques and unambiguously confirmed by single-crystal X-ray anal. The heteroaggregate stack formed from the bis(merocyanine) bearing two different chromophores exhibits remarkably different UV/vis absorption bands compared with those of the homo aggregate of the bis(merocyanine) comprising two identical chromophores. Quantum chem. anal. based on an extension of Kasha’s exciton theory appropriately describes the absorption properties of both types of stacks revealing strong exciton coupling also between different chromophores within the heteroaggregate. In the experiment, the researchers used many compounds, for example, 3-Ethylthiophene (cas: 1795-01-3Safety of 3-Ethylthiophene).
3-Ethylthiophene (cas: 1795-01-3) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Safety of 3-Ethylthiophene
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem