- Novel triphenylamine-based polyamides: Efficient preparation via benzoxazine-isocyanide-chemistry at room temperature and electrochromic properties investigation
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A type of novel triphenylamine (TPA)-based diisocyanide derivative, 4-isocyano-N-(4-isocyanophenyl)-N-(4-methoxyphenyl)aniline (M1), was successfully synthesized via Hofmann treatment of its primary amine precursor (2). A series of polyamides (P1–P3), whi
- Yang, Chang,Shi, Wei,Chen, Xin,Zhang, Kesong,Zhou, Xinyu,Sun, Xu,Ding, Sheng,Liu, Sai,Xie, Zhengfeng
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- 4, 4′-Diamino-4″-methoxytriphenylamine as highly sensitive fluorimetric sensor for the determination of water in organic solvents
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In this work, we report fast and low-cost fluorimetric system for the determination of trace amounts of water in both aprotic and protic organic solvents. The analytical signal of the proposed method is based on the quenching effects of water on the fluor
- Zargoosh, Kiomars,Barmaki, Mahshid,Abdolmaleki, Amir,Tadavani, Koorosh Firouz
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- Electrochromism properties of polyimides possessing triphenylamine moieties with different substituents
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Two diamine monomers with methyl (CH3TPA) and methoxy (OCH3TPA) group substituents in the para position of the triphenylamine (TPA) moiety were synthesized by nucleophilic aromatic substitution using 4-fluoronitrobenzene with p-toluidine and p-anisidine,
- Lee, Seung Hun,Bae, Jun,Seo, Hye Mi,Im, Ji Hyuk,Shin, Hyung Sub,Yoo, Eun Joo,Lee, Seung Woo
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- Diamine monomer containing heptaphenylene triamine-double fluorophore structure, preparation method and application of diamine monomer, polyamide, polyimide, preparation and application of polyamide and polyimide
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The invention provides a diamine monomer containing a heptaphenylene triamine-double fluorophore structure and a preparation method and application thereof, polyamide, polyimide and a preparation method and application thereof, and belongs to the technical field of electronic control fluorescence. The polyamide or polyimide prepared by taking the diamine monomer containing the heptaphenylene triamine-bifluorophore structure as a monomer can improve the solubility and film-forming property of the polymer while maintaining the thermal stability of the polymer, and endows the polymer with excellent electronic control fluorescence property. According to the record of the embodiment, the electric control fluorescence performance of polyamide or polyimide prepared from the diamine monomer containing the heptaphenylene triamine-bifluorophore structure is remarkably improved.
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- Novel anodic electrochromic aromatic polyamides with multi-stage oxidative coloring based on N,N,N′,N′-tetraphenyl-p-phenylenediamine derivatives
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A series of novel aromatic polyamides with pendent 4,4′-dimethoxy- substituted triphenylamine (TPA) units were prepared via the direct phosphorylation polycondensation from a new dicarboxylic acid monomer, N,N-bis(4-carboxyphenyl)-N′,N′-di(4-methoxyphenyl)-1, 4-phenylenediamine (4), and various aromatic diamines. These polyamides were amorphous with good solubility in many organic solvents, such as N-methyl-2-pyrrolidinone (NMP) and N,N-dimethylacetamide (DMAc), and could be solution-cast into flexible polymer films. They had excellent levels of thermal stability associated with their relatively high glass-transition temperatures (233-308 °C). These polymers exhibited strong UV-vis absorption bands at 351-363 nm in NMP solution. Their photoluminescence spectra showed maximum bands around 450-504 nm. The hole-transporting and electrochromic properties are examined by electrochemical and spectroelectrochemical methods. Cyclic voltammograms of the polyamide 6g prepared from the dicarboxylic acid monomer (4) with a structurally similar diamine monomer N,N-bis(4-aminophenyl)-N′, N′-di(4-methoxyphenyl)-1,4-phenylenediamine (5g) exhibited four reversible oxidation redox couples in acetonitrile solution at Eonset = 0.35, E1/2 = 0.64, 0.84, and 0.99 V, respectively. After over 3000 cyclic switches for green color, the films of polyamide 6g still showed excellent continuous cyclic stability of electrochromism.
- Chang, Cha-Wen,Liou, Guey-Sheng
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experimental part
p. 5638 - 5646
(2010/03/24)
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- Highly stable anodic green electrochromic aromatic polyamides: Synthesis and electrochromic properties
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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
- Chang, Cha-Wen,Liou, Guey-Sheng,Hsiao, Sheng-Huei
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p. 1007 - 1015
(2008/02/01)
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- Photodiodes Constructed by LB Films of Polyimides Possessing Triphenylamine Units
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Diaminotriphenylamines 4 possessing four different substituents were newly synthesized, and introduced to polyamic acids 6 by the reaction with aliphatic tetracarboxylic dianhydride 5.The LB films of polyimides 8 having triphenylamine units were fabricate
- Nishikata, Yasunari,Fukui, Shin-Ichiro,Kakimoto, Masa-Aki,Imai, Yoshio,Nishiyama, Katsuhiko,Fujihira, Masamichi
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