Synthesis and spectral characterisation of new amido-ether Schiff bases

Stamatoiu, Oana; Bubnov, Alexej; Tarcomnicu, Isabela; Iovu, M.

doi:10.1016/j.molstruc.2007.11.025

Cited by 35 publications

(8 citation statements)

References 17 publications

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“…In the 1 H-NMR spectrum, the methylene protons in (HO-CH 2 -) and (Ph-O-CH 2 -) appear at 3.57 ppm and 4.05 ppm, respectively. This is similar to the data that obtained by Stamatoiu et al [8]. The singlet peak at 8.65 ppm is assigned to the azomethine (-CH=N-) group [9].…”

Section: Resultssupporting

confidence: 89%

Synthesis and Liquid Crystalline Properties of New Diols Containing Azomethine Groups

et al. 2010

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A series of new mesogenic azomethine diols were successfully synthesized by condensation reactions between various chloroalkanols and N,N'-bis(4-hydroxy)-benzylidene-o-toluidine (1). The structures of these compounds were confirmed by CHN, FT-IR, 1 H-NMR, and 13 C-NMR spectrophotometer. Their thermotropic liquid crystalline behavior was studied using differential scanning calorimetry (DSC) and polarizing optical microscope (POM). 4,4'-di(4-Hydroxybutoxy)-N-benzylidine-o-tolidine (2a) does not exhibit liquid crystalline properties. A nematic texture was observed for mesogenic diols 2b, and 2d, whereas the diol 2c exhibits a smectic mesophase. The increase of terminal alkyl chain in these mesogenic diols leads to a decrease in the transition temperature.

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Section: Resultssupporting

confidence: 89%

Synthesis and Liquid Crystalline Properties of New Diols Containing Azomethine Groups

et al. 2010

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“…Peaks in the range of 820-872, 751 -824, and 714-785 cm -1 are ascribed to the out-ofplane (γ C-H ) bending. 22,25 The titled compounds gave a medium band at 1050-1081 cm -1 due to υ C-N . A stretching band from the benzene group appeared at 3211-3246 cm -1 .…”

Section: Characterization By Ft-ir Spectroscopymentioning

confidence: 99%

Synthesis and Characterization of New 3‐(3‐Hydroxyphenyl)‐4‐ alkyl‐3,4‐dihydrobenzo[e][1,3]oxazepine‐1,5‐dione Compounds

et al. 2011

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A series of 3-(3-hydroxyphenyl)-4-alkyl-3,4-dihydrobenzo[e][1,3]oxazepine-1,5-dione compounds with general formula C n H 2n＋1 CNO(CO) 2 C 6 H 4 (C 6 H 4 OH) in which n are even parity numbers from 2 to 18. The structure determinations on these compounds were performed by FT-IR spectroscopy which indicated that the terminal alkyl chain attached to the oxazepine ring was fully extended. Conformational analysis in DMSO at ambient temperature was carried out for the first time via high resolution 1 H NMR and 13 C NMR spectroscopy.

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“…Among those interactions, the strength of hydrogen bonds varies from very weak contacts to partial covalent bonds and they are directional and programmable . Consequently, hydrogen bonds play an important role for molecular recognition . These individual building blocks can be chemically modified to introduce a range of specific characteristics to the assembly (mechanical stability, electro‐optic response, functionality, etc.…”

Section: Introductionmentioning

confidence: 99%

“…19 Consequently, hydrogen bonds play an important role for molecular recognition. 20 These individual building blocks can be chemically modified to introduce a range of specific characteristics to the assembly (mechanical stability, electro-optic response, functionality, etc. ), allowing ultimately for engineering of desired functions into the assembled structure.…”

Section: Introductionmentioning

confidence: 99%

Supramolecular complexes based on liquid‐crystalline polysiloxanes and copper phthalocyanine

Kong

Song

Bai

et al. 2018

Polymer International

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Self‐assembly of mesogens in one polymer system reflects the capability for integrating intermolecular interactions and functions of materials. A series of novel supramolecular complexes (SCPs) containing cholesterol derivatives, siloxane backbone and copper phthalocyanine were synthesized. The SCPs were made from sulfonic acid‐containing precursor polymers (SAPs) synthesized by the use of 4‐(allyloxy)benzenesulfonic acid, cholest‐5‐en‐3‐ol‐(3β)‐4‐(allyloxy)benzoate and polymethylhydrosiloxane. Differential scanning calorimetry, polarizing optical microscopy and X‐ray diffraction results confirmed the mesomorphic properties. The SAPs showed smectic phase, but the SCPs showed columnar phase due to more lateral copper phthalocyanine groups in the polymer systems. Moreover, because of rigid side groups and cholesteric polymer, SCPs showed greater d‐spacings between the side mesogenic groups and exhibited very good electrical conductivity. © 2018 Society of Chemical Industry

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Synthesis and spectral characterisation of new amido-ether Schiff bases

Cited by 35 publications

References 17 publications

Synthesis and Liquid Crystalline Properties of New Diols Containing Azomethine Groups

Synthesis and Liquid Crystalline Properties of New Diols Containing Azomethine Groups

Synthesis and Characterization of New 3‐(3‐Hydroxyphenyl)‐4‐ alkyl‐3,4‐dihydrobenzo[e][1,3]oxazepine‐1,5‐dione Compounds

Supramolecular complexes based on liquid‐crystalline polysiloxanes and copper phthalocyanine

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