Fabrication and performance of all-solid-state dye-sensitized solar cells using synthetic carboxylated and pyridylated chlorophyll derivatives was written by Cui, Yuxiao;Zhao, Wenjie;Ogasawara, Shin;Wang, Xiao-Feng;Tamiaki, Hitoshi. And the article was included in Journal of Photochemistry and Photobiology, A: Chemistry in 2018.Electric Literature of C8H7BrO2 This article mentions the following:
All-solid-state dye-sensitized solar cells (DSSCs) based on a mesoporous TiO2 electrode were fabricated using synthetic chlorophyll derivatives as a photosensitizer and 2,2閳?7,7閳?tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9閳?spirobifluorene as a hole-transport material. Me pyropheophorbides-a possessing a carboxy group in the C3-substituent as the anchoring moiety to the TiO2 surface were effective DSSCs. Direct conjugation of the COOH group with the terminus of the C3-vinyl group gave the highest solar energy-to-electricity conversion efficiency (鐣? of 2.25%. Insertion of a 1,3-phenylene group in the connection partially suppressed the efficiency by 25% (鐣?= 1.68%), whereas insertion of an isomeric 1,4-phenylene moiety decreased to one third (0.75%). A pyridyl group was not useful as the sensitizer anchor due to its low binding affinity to the TiO2 electrode. In the experiment, the researchers used many compounds, for example, 3-(Bromomethyl)benzoic acid (cas: 6515-58-8Electric Literature of C8H7BrO2).
3-(Bromomethyl)benzoic acid (cas: 6515-58-8) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon閳ユ彽romine 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. Electric Literature of C8H7BrO2
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary