Synthesis and characterization of mono‐ and di‐methoxy substituted acrylate polymers containing photocrosslinkable pendant chalcone moiety

Tamilvanan, M.; Pandurangan, A.; Subramanian, K.; Reddy, B. S. R.

doi:10.1002/pat.1114

Cited by 10 publications

(3 citation statements)

References 33 publications

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“…Absorbance value of this band decreased rapidly with irradiation time from 0 to 315 min, and a new band at 284 nm, which is attributed to a new structure, arised. It is well known that the chalcone double bonds transform to cyclobutane ring with UV irradiation [11,14,[31][32][33]. The formation of cyclobutane ring by 2π + 2π addition of pendant chalcone units of the copolymer causes a decrease in the intensity of the band at 356 nm and formation of a new absorption band at 284 nm.…”

Section: Uv-vis Absorption Spectroscopic Study After Uv-irradiationmentioning

confidence: 99%

“…Synthetic chalcones are commonly synthesized with the reaction of aromatic ring bonded to acetyl group and benzaldehyde derivatives via the Claisen-Schmidt condensation in presence of bases or acids catalyst [2][3][4][5][6][7]. One of the important characteristics of the chalcones is that they have the ability to photocrosslinking under ultraviolet light [8][9][10][11][12][13]. Photochemical reactions may provoke many changes in physicochemical properties such as solubility, dielectric constant, electrical conductivity, optical transparency and refractive index [14,15].…”

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confidence: 99%

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Poly[4-pyridinyl-4´-(2-methacryloyloxyethoxy)styryl ketone-co-2-hydroxypropyl methacrylate]: Synthesis, Characterization, Thermal and Electrical properties, and Photocrosslinking behavior

Aygün¹,

Çoşkun²

2018

El-Cezeri Fen Ve Mühendislik Dergisi

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Synthesis of a chalcone bearing pyridine ring, 4-pyridinyl-4´-(2-hydroxyethoxy)styryl ketone, was carried out from the reaction of 4-acetyl pyridine and 4-(2-hydroxyetoxy)benzaldehyde in an aqueous solution of NaOH. 4-Pyridinyl-4´-(2-methacryloyloxyethoxy)styryl ketone which is the methacrylate monomer bearing chalcone structure in side chain, was obtained from acylation of 4-pyridinyl-4´-(2-hydroxyethoxy)styryl ketone with methacryloyl chloride in the cold. The copolymer of 4-pyridinyl-4´-(2-methacryloyloxyethoxy)styryl ketone and 2-hydroxypropyl methacrylate was prepared by free radical polymerization in presence of AIBN at 70 o C. FTIR, 1 H-NMR and 13 C-APT spectroscopic techniques were used for structural characterization of the Chalcone, the monomer and the copolymer. Thermal characterization of the copolymer was carried out using DSC and TGA techniques. DSC curve shows that this copolymer has a glass transition temperature of 78 o C. The TGA curve shows that decomposition given volatile product started at 230 °C and a residue of 21% left at 500 °C. Dielectric constant (ε´) of the copolymer decreased rapidly from 8.8 to 4.2 with increasing frequency in the range of 100-1000 Hz, and after this frequency ε´ quantity remained constant at a value such as 4.2. ε´ Value of the copolymer increased only from 4.2 to 4.9 with increasing from 290 K to 385 K. The AC conductivity of the copolymer increases from 5.01x10-10 S/cm to 126.0x10-10 S/cm as the frequency increase from 100 Hz to 5000 Hz. The AC conductivity increases slightly with increasing temperature, 2.52x10-9 S/cm at 300 K, and 2.89x10-9 S/cm at 385 K. After a solution of the copolymer was irradiated using UV light at 365 nm at room temperature, the absorption band at 356 nm disappeared and a new band was seen at 284 nm.

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Section: Uv-vis Absorption Spectroscopic Study After Uv-irradiationmentioning

confidence: 99%

mentioning

confidence: 99%

Poly[4-pyridinyl-4´-(2-methacryloyloxyethoxy)styryl ketone-co-2-hydroxypropyl methacrylate]: Synthesis, Characterization, Thermal and Electrical properties, and Photocrosslinking behavior

Aygün¹,

Çoşkun²

2018

El-Cezeri Fen Ve Mühendislik Dergisi

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“…Ⅲ 4-Hydroxyl chalcone [7]. A solution of 0.05mol NaOH in 3 ml deionized water was added to 0.05mol acetophenone in 60 ml of ethanol.…”

Section: Synthesis Of ⅲ ⅲ ⅲmentioning

confidence: 99%

Synthesis and Property of Liquid Crystal Polymers Containing Photosensitive Groups

Zhang

Zhao

et al. 2011

SSP

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The synthesis and free-radical polymerization of the acrylates monomer containing photosensitive chalcone group and the acrylates monomer containing mesogenic group are described in this paper. The monomers and polymers were characterized by FT-IR and 1 H NMR spectra. The thermal properties of polymers were measured by DSC and the liquid crystalline texture was measured by POM. And the results indicated that the polymers showed typical nematic phase and liquid crystal temperature range was 74 °C-103 °C.

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Synthesis, characterization and thermal properties of chalcone methacrylamide polymers containing methoxy group in side chain

2021

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Synthesis and characterization of mono‐ and di‐methoxy substituted acrylate polymers containing photocrosslinkable pendant chalcone moiety

Cited by 10 publications

References 33 publications

Poly[4-pyridinyl-4´-(2-methacryloyloxyethoxy)styryl ketone-co-2-hydroxypropyl methacrylate]: Synthesis, Characterization, Thermal and Electrical properties, and Photocrosslinking behavior

Poly[4-pyridinyl-4´-(2-methacryloyloxyethoxy)styryl ketone-co-2-hydroxypropyl methacrylate]: Synthesis, Characterization, Thermal and Electrical properties, and Photocrosslinking behavior

Synthesis and Property of Liquid Crystal Polymers Containing Photosensitive Groups

Synthesis, characterization and thermal properties of chalcone methacrylamide polymers containing methoxy group in side chain

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