88912-86-1Relevant academic research and scientific papers
Highly efficient organic dyes containing a benzopyran ring as a π-bridge for DSSCs
Chen, Cheng,Yang, Xichuan,Cheng, Ming,Zhang, Fuguo,Zhao, Jianghua,Sun, Licheng
, p. 12688 - 12693 (2013)
A series of novel organic dyes containing a benzopyran ring as a π-bridge have been designed and applied in dye-sensitized solar cells (DSSCs). This series of dyes show the excellent DSSCs' performance, due to their efficient light-to-photocurrent conversion in the region from 380 nm to 600 nm, with the highest IPCE values exceeding 90%. Through modification of the donor units, an efficiency as high as 7.5% has been achieved under standard light illumination (AM 1.5G, 100 mW cm-2) by the dye CC103. The Royal Society of Chemistry 2013.
Reactions with 2-Methyl- and 2-Styryl-4-thiochromones
Zeid, Ibrahim,El-Bary, Hamed Abd,Yassin, Salah,Zahran, Magdy
, p. 186 - 190 (2007/10/02)
Diazoalkanes react with 2-methyl- and 2-styryl-4-thiochromones to yield the 1,3-dithiolanes 1 and/or ethylenes 2-4.The latter are cleaved with thionyl chloride to give the corresponding ketones, while on fusion with sulfur they afford the corresponding thioketones.By condensation with compounds containing active hydrogen, such as malononitrile and ethyl cyanoacetate, the 2-methyl- and 2-styryl-4-thiochromones yield the compounds 5.Oxidation of 2-methyl- and 2-styryl-4-thiochromones was accomplished by yellow mercury(II) oxide as well as with tetrahalo-o-benzoquinones to give the corresponding ketones.The biological activity of some selected comounds prepared during this work has been tested towards Gram-positive and Gram-negative bacteria.
