Studies of Substituents Impact on the Photophysical Properties of 8-Hydroxyquinoline Derivatives was written by Gao, Li-Bin;Kang, Wu-Kui;Yan, Shi-Hai;Yang, Chun-Peng. And the article was included in Heteroatom Chemistry in 2016.SDS of cas: 18791-79-2 This article mentions the following:
Five new 8-hydroxyquinoline derivatives L1-L5 were synthesized and characterized by different techniques, such as NMR, electrospray ionization mass spectra, elemental anal., UV-visible, and photoluminescence spectra. The structure of (E)-2-{2-[5-(phenylethynyl) thiophen-2-yl]ethenyl}quinolin-8-ol (L3) was confirmed by x-ray crystallog. In this structure, intermol. hydrogen bonds were found between OH hydrogen donors of one monomer and the oxygen atom of the next one. Photophys. studies show that different substitutes affect the absorption wavelength and emission color. In the experiment, the researchers used many compounds, for example, 5-Bromothiophene-3-carbaldehyde (cas: 18791-79-2SDS of cas: 18791-79-2).
5-Bromothiophene-3-carbaldehyde (cas: 18791-79-2) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon闂佺偨鍎茶ぐ绲﹐mine bond is electrophilic, i.e. alkyl bromides are alkylating agents. Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. SDS of cas: 18791-79-2
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary