Dynamic and electrooptical non-equivalency of amino group NH bonds of anisidines in H-bonded 1:1 and 1:2 complexes with proton acceptors

Borisenko, E.; Morev, A. V.; Koll, A.

doi:10.1016/s0022-2860(97)00376-1

Cited by 16 publications

(1 citation statement)

References 13 publications

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“…After CNC was modified by KH792, two weak peaks of C─NH 2 were observed at 3292 and 3342 cm −1 , respectively, and the characteristic peak corresponding to the OH groups disappeared. At the same time, the characteristic absorption peak at 1265 cm −1 corresponding to Si─O─cellulose appeared, indicating that CNC─NH 2 was prepared successfully . In Figure (c), compared with that of sPEEKK, the peak around 1039 cm −1 appeared, which was due to the Si─O─Si network asymmetric stretching mode.…”

Section: Resultsmentioning

confidence: 79%

Property improvement of nanocellulose‐reinforced proton exchange nanocomposite membrane coated with tetraethyl orthosilicate

Zhao

Wei

et al. 2019

J. Polym. Sci. Part A: Polym. Chem.

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Study on proton exchange membrane (PEM) with the aim toward excellent battery performance of PEM for fuel cells has attracted increasing attention. In this work, nanocellulose (CNC) aminated by KH792 noted as NN was prepared. CNC or NN/sulfophenylated poly(ether ether ketone ketone) (sPEEKK) nanocomposite membrane (SN) or (SNN) were produced by solution mixing. SNN was further coated with tetraethyl orthosilicate (TEOS) to obtain SNNT. The properties of sPEEKK, SN, SNN, and SNNT membranes were thoroughly investigated. The proton conductivity of SN4 was 0.22 S·cm−1 at 90 °C, while a proton conductivity of 0.30 S·cm−1 was obtained for SNN4, and an even higher value of 0.36 S·cm−1 at 90 °C was obtained for the TEOS‐coated SNN4 (SNN4T). Meanwhile, SNN4T showed high thermal stability, and its Td5 was as high as 318.2 °C. Furthermore, the composite membrane coated with TEOS also presented excellent oxidative stability. The mass of SNN2T after treated in Fenton agent for 1 h at 80 °C was still retained 96.2%, and it was not fully dissolved until 11 h. It was illustrated that aminated CNC/sPEEKK nanocomposite membranes coated with TEOS is a kind of promising materials as PEMs for fuel cells. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 2190–2200

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Section: Resultsmentioning

confidence: 79%

Property improvement of nanocellulose‐reinforced proton exchange nanocomposite membrane coated with tetraethyl orthosilicate

Zhao

Wei

et al. 2019

J. Polym. Sci. Part A: Polym. Chem.

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Hydrogen Bonds of Anilines

Forlani

2009

Patai's Chemistry of Functional Groups

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Self‐assembly of molecules containing the 2‐aminopyridine unit in non‐polar solvents

Роспенк

Koll

2005

J of Physical Organic Chem

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A combined experimental and theoretical study on the self-assembly of three molecules, 2,2 0dipyridylamine, 2-(1-phenylamino)pyridine and 2-methylaminopyridine was performed. The effect of concentration increase in low-polarity solvents was investigated. The average molecular weights, dipole moments and IR spectra of these compounds were measured in C 6 H 6 , CCl 4 and CHCl 3 . A strong association of all these molecules was found, through N-H Á Á ÁN hydrogen bonding. The form of associates is different; in molecules containing the N-aromatic ring the aggregates have a dipole moment decreasing with concentration whereas in N-methylaminopyridine a considerable increase in dipole moment with concentration was observed. DFT B3LYP/6-31G(d,p) calculations for monomers, dimers, trimers and tetramers of these three molecules were performed to model the structures of possible aggregates.

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Dynamic and electrooptical non-equivalency of amino group NH bonds of anisidines in H-bonded 1:1 and 1:2 complexes with proton acceptors

Cited by 16 publications

References 13 publications

Property improvement of nanocellulose‐reinforced proton exchange nanocomposite membrane coated with tetraethyl orthosilicate

Property improvement of nanocellulose‐reinforced proton exchange nanocomposite membrane coated with tetraethyl orthosilicate

Hydrogen Bonds of Anilines

Self‐assembly of molecules containing the 2‐aminopyridine unit in non‐polar solvents

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