Tao, Tao; Fang, Dongsheng; Chen, Yunyun; Fan, Yuting; Lu, Haijie published an article in 2021. The article was titled 《The length effect and color tuning of tetraphenylethylene functionalized oligothiophenes for effective detection of explosives》, and you may find the article in Dyes and Pigments.Computed Properties of C4H2Br2S The information in the text is summarized as follows:
Aggregation-induced fluorescent materials are of great importance in optoelectronics and bioelectronics in solid-state devices. Herein, functionalized oligothiophenes were designed and synthesized with the tetraphenylethylene (TPE) groups to explore the length effect and color tuning for the effective detection of explosives. Remarkably, compounds 2TPE1T and 2TPE2T show an aggregation-induced emission phenomenon, while longer π-conjugated mols. 2TPE3T, 2TPE4T, TPE5T and 2TPE6T show aggregation-caused quenching character, where the reason has been explained based on UV-Vis spectra ranging from 378-446 nm. Furthermore, fluorescent titration experiments demonstrate that dye 2TPE1T has a better response than dye 2TPE2T for nitroaroms. The visual detection limit of 2,6-DNT is 18.2 ng/cm2 in the test strip of 2TPE1T. In addition, there is an exquisitely linear curve between the theor. and exptl. energy levels for TPE functionalized oligothiophenes. The effect of introducing TPE end-capped on the energy gap convergence has also been discussed, showing the energy level correlation of linear fitting combined with a theor. and exptl. perspective. This result not only paves the way toward π-functional materials but also expands their applications. In the part of experimental materials, we found many familiar compounds, such as 2,5-Dibromothiophene(cas: 3141-27-3Computed Properties of C4H2Br2S)
2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used as starting reagent for the synthesis of α,α′-didecylquater-, -quinque- and -sexi-thiophenes.Computed Properties of C4H2Br2S
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary