14447-18-8Relevant articles and documents
Photophysical and (photo)electrochemical properties of a coumarin dye
Wang, Zhong-Sheng,Hara, Kohjiro,Dan-oh, Yasufumi,Kasada, Chiaki,Shinpo, Akira,Suga, Sadaharu,Arakawa, Hironori,Suglhara, Hideki
, p. 3907 - 3914 (2005)
A new coumarin dye, cyano-{5,5-dimethyl-3-[2-(1,1,6,6-tetramethyl-10-oxo-2, 3,5,6-tetrahydro-1H,4H,10H-11-oxa-3a-aza-benzo[de]anthracen-9-yl)vinyl] cyclohex-2-enylidene}-acetic acid (NKX-2753), was prepared and characterized with respect to photophysical and electrochemical properties. It was employed as a dye sensitizer in dye-sensitized solar cells and showed efficient photon-to-electron conversion properties. The photocurrent action spectrum exhibited a broad feature with a maximum incident photon-to-electron conversion efficiency (IPCE) of 84% at 540 nm, which is comparable to that for the famous red dye RuL2(NCS)2 (known as N3), where L stands for 2,2′-bipyridyl-4,4′-dicarboxylic acid. The sandwich-type solar cell with NKX-2753, under illumination of full sun (AM1.5, 100 mW cm-2), produced 16.1 mA cm-2 of short-circuit photocurrent, 0.60 V of open-circuit photovoltage, and 0.69 of fill factor, corresponding to 6.7% of overall energy conversion efficiency using 0.1 M Lil, 0.05 M I2, 0.1 M guanidinium thiocyanate, and 0.6 M 1,2-dimethyl-3-n-propyl-imidazolium iodide in dry acetonitrile as redox electrolyte. In comparison with its analogue NKX-2586 (Langmuir 2004, 20, 4205), NKX-2753 with an extra side ring on the alkene chain produced much higher IPCE values at the same conditions. The side ring acted as a spacer to efficiently prevent dye aggregation when adsorbed on the TiO2 surface, resulting in significant improvements of short-circuit photocurrent, open-circuit photovoltage, and fill factor compared with NKX-2586 that aggregated on the TiO2 surface.
β-aryl nitrile construction via palladium-catalyzed decarboxylative benzylation of α-cyano aliphatic carboxylate salts
Shang, Rui,Huang, Zheng,Xiao, Xiao,Lu, Xi,Fu, Yao,Liu, Lei
supporting information, p. 2465 - 2472,8 (2020/08/31)
The palladium-catalyzed decarboxylative benzylation of α-cyano aliphatic carboxylate salts with benzyl electrophiles was discovered. This reaction exhibits good functional group compatibility and proceeds under relatively mild conditions. A diverse range of quaternary, tertiary and secondary β-aryl nitriles can be conveniently prepared by this method. Copyright
A facile construction of the 3,6-diamino-1,2,3,4-tetrahydropyridine-4-one scaffold: synthesis of N-3 to carbon replacement analog of TAN-1057A/B
Zhang, Lijun,Kim, Choung U.,Xu, Lianhong
, p. 3273 - 3275 (2008/02/02)
A facile construction of the 3,6-diamino-1,2,3,4-tetrahydropyridine-4-one class of compounds is described. Compound 2, a carbon analog at the N-3 position of TAN-1057A/B, was synthesized using this approach.
