221171-37-5Relevant articles and documents
A solvent- and temperature-dependent intramolecular equilibrium of diamagnetic and paramagnetic states in Co complexes bearing triaryl amines
Schnaubelt, Linda,Petzold, Holm,Dmitrieva, Evgenia,Rosenkranz, Marco,Lang, Heinrich
, p. 13180 - 13189 (2018/10/02)
Complexes [Co(L)2](ClO4)2 (L = o-substituted 2-(pyridine-2-yl)-1,10-phenanthrolines 1a-c) containing three redox active centres (a Co2+ ion and two triaryl amine (Tara) units) have been synthesised. The order of
Click synthesis and reversible electrochromic behaviors of novel polystyrenes bearing aromatic amine units
Li, Yongrong,Michinobu, Tsuyoshi
experimental part, p. 2111 - 2120 (2012/07/14)
Novel electrochromic polymers were prepared by the click postfunctionalization of poly(4-azidomethylstyrene) with alkyne-containing aromatic amine units in the presence of Cu(I) catalysts. Two kinds of aromatic amine units, tris(4-alkoxyphenyl)amine and N,N,N',N'-tetraphenyl-p- phenylenediamine, were introduced into polystyrene side chains, which were completely characterized by gel permeation chromatography-multiangle light scattering, nuclear magnetic resonance, and infrared spectroscopies, and elemental analysis. Thermal analyses demonstrated the high stability with the decomposition temperatures exceeding 300 °C even after postfunctionalization. The UV-vis absorption spectra of the polymer thin films revealed negligible absorption in the visible region, as reasonably confirmed by visual observation. The polymer thin films were prepared by spray-coating on an indium tin oxide-coated glass plate. Cyclic voltammograms of these films exhibited anodic peaks ascribed to the oxidation of the side-chain aromatic amine moieties. The tris(4-alkoxyphenyl)amine unit displayed one-step oxidation at 0.287 V (vs. Ag/AgCl), while the N,N,N',N'-tetraphenyl-p-phenylenediamine unit showed two-step oxidations at 0.297 and 0.641 V. These oxidation processes produced new colors of the polymer films. The former triarylamine-based chromophore provided a blue color after the oxidation, while the latter phenylenediamine-based chromophore showed a potentially controlled green and dark blue colors. The reversibility and switching behaviors of these color changes were also comprehensively investigated. 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012 Aromatic amine-based active electrochromophores were quantitatively introduced into a polystyrene side chain by using the Cu(I)-catalyzed azide-alkyne cycloaddition reaction. The reversible electrochromic behaviors of the functionalized polystyrenes were investigated by spectroelectrochemistry. Copyright
