Chemical properties and self-assembled-ordered structures of π-conjugated cooligomers consisted of 2,6-dialkoxynaphthalene-1,5-diyl, 2,1,3-benzothiadiazole-4,7-diyl, and 1,4-phenylenediethynylene units

Yamaguchi, Isao; Kondo, Asami

doi:10.1007/s00289-017-2117-9

Cited by 2 publications

(2 citation statements)

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“…. It has been reported that π‐conjugated polymers that form π‐stacked structures in the solid state often cause a bathochromic shift of λ max . On the basis of these results, the polymer may form an ordered structure in the solid state.…”

Section: Resultsmentioning

confidence: 94%

“…It has been reported that -conjugated polymers that form -stacked structures in the solid wileyonlinelibrary.com/journal/pi state often cause a bathochromic shift of max . [12][13][14][15] On the basis of these results, the polymer may form an ordered structure in the solid state. Figure 5 shows powder XRD patterns of polymer(Fe), polymer(Bi), salt(Fe) and salt(Bi).…”

Section: Synthesis Of Model(bi)mentioning

confidence: 99%

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Metal‐chloride‐anion‐containing polymers with expanded π‐conjugation systems derived from through‐space interactions in the piperazinium ring

Yamaguchi

Hamada

Miyoshi

et al. 2019

Polymer International

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Reactions of N‐(2,4‐dinitrophenyl)pyridinium chloride (salt(Cl)) with H+MCl4−1 (M ≡ Fe and Bi) resulted in an anion exchange between Cl− and MCl4− to yield Zincke salts with metal chloride anions, namely salt(Fe) and salt(Bi), respectively. Reactions of the Zincke salts with piperazine resulted in ring‐opening of the pyridinium ring, yielding ionic polymers with 5‐piperazinium‐2,4‐dienylideneammonium metal chloride units, namely polymer(Fe) and polymer(Bi). The corresponding model compounds were synthesized via reactions using salt(Bi) or salt(Cl) as starting materials. The UV–visible spectra of the polymers had absorption maxima at longer wavelengths than those of the model compounds. This indicated that the π‐conjugation system is expanded along the polymer main chain. Superconducting quantum interference device measurements indicated that polymer(Fe) was paramagnetic. Cyclic voltammetry analysis suggested that the polymers underwent electrochemical oxidation. © 2019 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 94%

Section: Synthesis Of Model(bi)mentioning

confidence: 99%