1100-10-3Relevant academic research and scientific papers
Highly stable anodic green electrochromic aromatic polyamides: Synthesis and electrochromic properties
Chang, Cha-Wen,Liou, Guey-Sheng,Hsiao, Sheng-Huei
, p. 1007 - 1015 (2007)
A 4-methoxy-substituted triphenylamine containing the aromatic diamine, 4,4′-diamino-4″-methoxytriphenylamine (2), was synthesized by the caesium fluoride-mediated condensation of p-anisidine with 4-fluoronitrobenzene, followed by palladium-catalyzed hydr
Copper(I)–creatine complex on magnetic nanoparticles as a green catalyst for N- and O-arylation in deep eutectic solvent
Bagheri, Sepideh,Heydari, Akbar,Pazoki, Farzane,Radfar, Iman
, (2020)
Immobilization of copper(I) ions on magnetic nanoparticles was performed using surface modification of Fe3O4 with creatine. Fe3O4?creatine-Cu(I) magnetic catalyst was synthesized and applied in C&bond;X cross-coupling reactions with aryl halides in a deep eutectic as a green solvent. The results indicate the Fe3O4?creatine-Cu(I) magnetic nanoparticles showed excellent activity and high stability. In addition, it was revealed that this catalyst can be recycled five times without significant loss in catalytic activity.
Structural effect on the resistive switching behavior of triphenylamine-based poly(azomethine)s
Zhang, Wenbin,Wang, Cheng,Liu, Gang,Wang, Jun,Chen, Yu,Li, Run-Wei
, p. 11496 - 11499 (2014)
Linear and hyperbranched poly(azomethine)s (PAMs)-based on triphenylamine moieties are synthesized and used as the functioning layers in the Ta/PAM/Pt resistive switching memory devices. Comparably, the hyperbranched PAM with isotropic architecture and semi-crystalline nature shows enhanced memory behaviors with more uniform distribution of the HRS and LRS resistances.
Highly selective copper-catalyzed monoarylation of aniline
Haider, Joachim,Kunz, Klaus,Scholz, Ulrich
, p. 717 - 722 (2004)
A series of mono-, bi- and tridendate ligands was investigated in the copper-catalyzed monoarylation of aniline with p-chloronitrobenzene. Excellent selectivities at high conversions were observed when bridged bisimidazolidenes as well as biphenyl-bisalkylphosphines were employed. The X-ray crystal structure of bis(tert-butyl)biphenylphosphine-copper complex indicates a significant binding of the metal center to the aryl moiety and, thus, an almost bidendate coordination mode. Chelating bisphosphines, glycol, phenanthroline or other monoto tridendate ligands led to less selective or productive catalysts.
Construction of electrocatalytic electrodes bearing the triphenylamine nucleus covalently bound to carbon. A halogen dance in protonated aminotriphenylamines
Mayers, Brian T.,Fry, Albert J.
, p. 411 - 414 (2006)
The triarylamine nucleus has been attached to a carbon fiber electrode by diazotization of an aminotriphenylamine followed by electrochemical reduction. The resulting electrodes can electrocatalyze the oxidation of organic substrates. In acid, 4-amino-4′,4″-dibromotriphenylamine undergoes dismutation into a mixture of amines containing from 0 to 3 bromine atoms.
Structural characterization of triphenylamine (TPA)-based polymers during the oxidative reaction by two-dimensional (2D) infrared correlation study
Bae, Jun,Chae, Boknam,Seo, Hyemi,Jung, Young Mee,Lee, Seung Woo
, p. 200 - 204 (2014)
This paper reports the oxidative reaction of triphenylamine (TPA)-based polyamide films. A two-dimensional (2D) gradient mapping method and 2D correlation analysis were applied to the ultraviolet-visible (UV-Vis) and infrared (IR) spectra of TPA-based pol
Synthesis and dynamic random access memory behavior of a functional polyimide
Ling, Qi-Dan,Chang, Feng-Chyuan,Song, Yan,Zhu, Chun-Xiang,Liaw, Der-Jang,Chan, Daniel Siu-Hhung,Kang, En-Tang,Neoh, Koon-Gee
, p. 8732 - 8733 (2006)
The device under testing was a plastic dynamic random access memory based on a donor-functionalized polyimide (TP6F-PI), which exhibited the ability to write, read, erase, and refresh the electrical states. The device had an ON/OFF current ratio up to 105, promising minimal misreading error. Both the on and off states were stable under a constant voltage stress of 1 V and survived up to 108 read cycles at 1 V. Copyright
Novel aromatic poly(amine-imide)s bearing a pendent triphenylamine group: Synthesis, thermal, photophysical, electrochemical, and electrochromic characteristics
Cheng, Shu-Hua,Hsiao, Sheng-Huei,Su, Tzy-Hsiang,Liou, Guey-Sheng
, p. 307 - 316 (2005)
A new triphenylamine-containing aromatic diamine, N,N-bis(4-aminophenyl)-N′,N′-diphenyl-1,4-phenylenediamine, was synthesized from the animation reaction between 4-aminotriphenylamine and 4-fluoronitrobenzene and subsequent reduction of the dinitro intermediate. A series of novel aromatic poly(amine-imide)s with pendent triphenylamine units were prepared from the newly synthesized diamine and various tetracarboxylic dianhydrides by either a one-step or a conventional two-step polymerization process. All the poly(amine-imide)s were amorphous and readily soluble in many organic solvents such as N-methyl-2-pyrrolidone (NMP), N,N-dimethylacetamide, and chloroform. These polymers could be solution cast into transparent, tough, and flexible films with good mechanical properties. They had useful levels of thermal stability associated with relatively high glass transition temperatures (264-3520°C), 10% weight-loss temperatures in excess of 568°C, and char yields at 800°C in nitrogen higher than 63%. These polymers exhibited strong UV-vis absorption bands at 311-330 nm in NMP solution. The photoluminescence spectra showed maximum bands around 545-562 nm in the green region. The holetransporting and electrochromic properties are examined by electrochemical and spectroelectrochemical methods. Cyclic voltammograms of the poly(amine-imide) films cast onto an indium-tin oxide (ITO)-coated glass substrate exhibited two reversible oxidation redox couples at 0.78 and 1.14 V versus Ag/ AgCl in acetonitrile solution. The poly(amine-imide) films revealed excellent stability of electrochromic characteristics, with a color change from the pale yellowish neutral form to the green and blue oxidized forms at applied potentials ranging from 0.78 to 1.14 V.
Electrochromic properties of pyrene conductive polymers modified by chemical polymerization
Chang, Lijing,Hou, Yanjun,Li, Rui,Ma, Yang,Miao, Shoulei,Wang, Cheng,Xu, Haoran,Zhang, Yuhang
, p. 39291 - 39305 (2021/12/27)
Pyrene is composed of four benzene rings and has a unique planar melting ring structure. Pyrene is the smallest condensed polycyclic aromatic hydrocarbon, and its unique structural properties have been extensively studied. Pyrene has excellent properties such as thermal stability, high fluorescence quantum efficiency and high carrier mobility. This paper mainly used thiophene, EDOT and triphenylamine groups to enhance the pyrene based π-conjugated system and control the molecular accumulation of organic semiconductors, and improve their charge transport performances. Five kinds of polymer were synthesized and correspondingly characterized. The five kinds of pyrene conductive polymer had outstanding properties in terms of solubility, fluorescence intensity and thermal stability, good film-forming properties, stable electrochromic properties and high coloring efficiency. The coloration efficiency (CE) of PPYTP was as high as 277 cm2C?1, and the switching response time was short. The coloring time of PPYEDOT was 1.3 s and the bleaching time was 3.2 s. The lower impedance will also provide the possibility of such polymers being incorporated into electrochromic devices in the future. In short, the synthesized new pyrene conductive polymers will have wide application prospects in the field of electrochromic materials.
Isolable Adducts of Tertiary Amines and Dinitrogen Trioxide
Rosadiuk, Kristopher A.,Scott Bohle
, p. 4543 - 4549 (2018/10/31)
Anhydrous dinitrogen trioxide, N2O3, dissolved in toluene or dichloromethane rapidly forms stable adducts with tertiary amines such triethyl-, tribenzyl-, or trihexyl-amine. With DABCO, 1,4-diazabicyclo[2.2.2]octane it forms a free flowing orange solid. The analytical and spectroscopic data for the DABCO adduct indicate a formula of DABCO(N2O3)2 which has been characterized by IR, Raman, and UV/Vis spectroscopy. The R3N-N2O3 adducts are hydrolytically sensitive oils or solids which rapidly react quantitatively with thiols to give RSNO. The reactivity of the amine adducts is variable, and the products include amine N-oxides, ammonium nitrites, and ammonium nitrates depending upon the adduct, conditions, and substrate. Density functional theory, B3LYP/aug-cc-pvtz, has been used to compare the predicted structures and spectroscopic data for mono and bis adducts. Geometry optimization of the R3N N2O3 adduct gives a weakly bound Lewis acid/base adduct with the amine nitrogen closest to the nitrosyl N with a strongly tilted planar ONNO2 unit.
