Polyimine, a C=N Double Bond Containing Polymers: Synthesis and Properties

Suematsu, Koichi; Nakamura, Katsuyuki; Takeda, J.

doi:10.1295/polymj.15.71

Cited by 28 publications

(12 citation statements)

References 18 publications

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“…When the water was removed from the reaction solution by distillation, a higher molecular weight was achieved (table 2, polymers 2 and 9). This phenomenon is attributed to the same reversibility between monomers and polymer as aliphatic polyimine [14]. Figure 4 shows infrared spectra of polyimines 2 and 3.…”

Section: Resultsmentioning

confidence: 78%

Synthesis of aromatic polyimines by the condensation of aromatic dialdehyde and diamine

Suematsu

Nakamura

Takeda

1983

Colloid & Polymer Sci

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Abstra~: Film-forming aromatic polyimines were prepared by low temperature solution polymerization of aromatic dialdehyde and aromatic diamine using m-cresoL The polymerization proceeded rapidly to give high molecular weight polyimine solutions. Fibrous polymers were precipitated by pouring the solutions into anhydrous methanol. Lemon yellow-to-orange films were cast in situ from the reaction solutions. The polymers showed typical C=N stretching absorption near 1620 cm -1 in infrared spectra and had high glass transitions of over 200 ~ but showed low crystallinity.

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Section: Resultsmentioning

confidence: 78%

Synthesis of aromatic polyimines by the condensation of aromatic dialdehyde and diamine

Suematsu

Nakamura

Takeda

1983

Colloid & Polymer Sci

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“…The bifuryl-containing poly(Schiff base)s were soluble in some organic solvents, whereas previously reported poly(Schiff base)s were hard to dissolve in organic solvents and often became insoluble following reprecipitation. 31 Polymer solubility is important for electric-device applications because wet processes are used to fabricate these devices. The poly(Schiff base)s were slightly soluble in halomethane solvents, namely chloroform and dichloromethane, and amide-based aprotic polar solvents, such as N , N -dimethylformamide, N , N -dimethylacetamide, and N -methylpyrrolidone, but they were insoluble in other polar solvents, including water, methanol, dimethyl sulfoxide, ethyl acetate, diethyl ether, and tetrahydrofuran.…”

Section: Resultsmentioning

confidence: 99%

Biobased Poly(Schiff-Base) Composed of Bifurfural

2018

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In this study, bifurfural, an inedible biobased chemical and a second-generation biomass, was polymerized with several diamines using an environmentally benign process, and the chemical structures of the resulting poly(Schiff base)s were analyzed. Because furan rings, which are only produced from biomass and not from fossil resources, endow polymers with unique properties that include high rigidity and expanded π-conjugation, bifurfural, which contains two furan rings, is of significant interest as a biobased building block. 1 H NMR, IR, and matrix assisted laser desorption ionization-time of flight mass spectra of the poly(Schiff base)s reveal that they are composed of mixtures of linear and cyclic structures. The UV–vis spectroscopy and molecular orbital theory confirm the extended π-conjugation in the bifurfural/ p -phenylenediamine poly(Schiff base) system. Poly(Schiff base)s composed of bifurfural and 1,3-propanediamine, 1,4-butandiamine, 1,5-pentanediamine, and 1,6-hexanediamine were molded at 120 °C into films that exhibited good strengths and were tough to bend. These results indicate that bifurfural-based poly(Schiff base)s are promising biobased materials.

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“…The absence of Ti in DPAs is confirmed by ICP-MS (the concentration of Ti in the DPA G4 powder: under 0.1 ppm). Linear polyphenylazomethines [43][44][45][46][47][48][49][50][51][52][53][54][55][56][57] have poor solubility, but the other topological polyphenylazomethines such as DPAs or cyclic polyphenylazomethines [58][59][60][61] show high solubility for the common solvents such as chloroform, THF, or DMSO.…”

Section: Dendrimers: Syntheses and Structuresmentioning

confidence: 99%

Metal Ion Assembly in Macromolecules

Higuchi¹,

Hayashi²,

Kurth³

2006

J. Nanosci. Nanotech.

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Self-assembled organic-inorganic hybrid nano-materials have recently received much attention due to their novel and original functions, including new electronic, optical, magnetic, and catalytic properties. Especially, reactions in organic-metallic hybrid materials are closely related to biological reactions, such as the reactions in metal-containing protein, and the controlled metal ions assembly into organic polymers becomes very important. In the first part of this review, recent progresses in two types of organic-inorganic hybrid nano-materials (Organic compounds [character: see text] inorganic mesoporous materials and Metal ions [character: see text] organic polymer) are summarized. In the latter parts, dendrimer-metal complexes, examples of nature-mimetic materials, are introduced, and their controlled metal assembly in dendrimer and their application are reviewed.

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Polyimine, a C=N Double Bond Containing Polymers: Synthesis and Properties

Cited by 28 publications

References 18 publications

Synthesis of aromatic polyimines by the condensation of aromatic dialdehyde and diamine

Synthesis of aromatic polyimines by the condensation of aromatic dialdehyde and diamine

Biobased Poly(Schiff-Base) Composed of Bifurfural

Metal Ion Assembly in Macromolecules

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