In situ UV–vis- and FT-IR-spectroscopy of electrochemically synthesized furan–thiophene copolymers

Alakhras, Fadi; Holze, Rudolf

doi:10.1016/j.synthmet.2006.12.011

Cited by 63 publications

(36 citation statements)

References 69 publications

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“…7a). The strong band at 883 cm −1 appeared in spectrum confirms the presence of furan ring at para position with respect to the amine group [44]. In the spectrum of the PFu (Fig.…”

Section: Ir Studiesmentioning

confidence: 63%

See 1 more Smart Citation

Electrochemical synthesis of polymer based on 4-(2-furyl) benzenamine: Electrochemical properties, characterization and applications

Shahhosseini

Nateghi

Kazemipour

et al. 2015

Progress in Organic Coatings

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“…7a). The strong band at 883 cm −1 appeared in spectrum confirms the presence of furan ring at para position with respect to the amine group [44]. In the spectrum of the PFu (Fig.…”

Section: Ir Studiesmentioning

confidence: 63%

“…This band is characteristic of ␣-substituted five-member heterocyclic compounds. This means that furan rings are linked to aniline via ␣-positions in the polymerization process [44]. The band about 570 cm −1 is probably based on in-plane ring deformation.…”

Section: Ir Studiesmentioning

confidence: 95%

Electrochemical synthesis of polymer based on 4-(2-furyl) benzenamine: Electrochemical properties, characterization and applications

Shahhosseini

Nateghi

Kazemipour

et al. 2015

Progress in Organic Coatings

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“…The stretching frequency of C-C bond in polythiophene appears in the region 1443-1523 cm −1 . The two bands at 1138 and 1210 cm −1 are possibly due to a C-H in-plane deformation, while the bands in the region of 867-987 cm −1 are related to C-H outof-plane deformation [23]. According to the IR data, the copolymers containing the thiophene unit were prepared successfully.…”

Section: Ft-ir Spectroscopy Studiesmentioning

confidence: 96%

“…Moreover, strong absorption peaks at~832, 1310 and 1507 cm −1 can be designated to the out-of-plane bending vibration of C-H on the para-disubstituted ring, stretching vibration of C-N and stretching vibration of benzenoid ring, respectively [20,22]. The band located at 723 cm −1 is assigned to C-S-C outof-plane deformation [23,24]. The stretching frequency of C-C bond in polythiophene appears in the region 1443-1523 cm −1 .…”

Section: Ft-ir Spectroscopy Studiesmentioning

confidence: 99%

p-benzoquinone diimines and thiophene based alternating copolymers: organometallic catalyzed syntheses and elementary characterization

Shi

Zhang

et al. 2012

J Polym Res

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A series of alternating polymers, which were prepared by coupling of N, N'-dichloro-benzoquinonediimine (a) or 2, 5-dimethyl-N, N'-dichloro-benzoquinonediimine (b) with Grignard reagents of thiophene, were successfully prepared using Ni(II) complexes as catalyst with moderate yields (54-88%) and molecular weights (4.3-7.0×10 3 ). The basic properties of the obtained copolymers were characterized by FT-IR, 1 H NMR, UV-vis absorption, cyclic voltammetry, thermal analysis and Gel permeation chromatography (GPC). The maximum UV-vis absorption of these polymers appears in the range of 410-430 nm and 437-494 nm in DMF and CF 3 COOH, respectively. XRD patterns of these polymers suggest the low crystallinty. After doped by iodine, conductivity of obtained polymers was improved five-eight orders of magnitude relative to their corresponding neutral precursors (the conductivity of them was <10 −13 S/cm). The electrochemical activity of iodine-doped polymers was greatly improved as compared to un-doped ones. The reduction of pristine benzoquinone polymers was also studied in order to tune their properties conveniently.

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“…The peaks near 1509 and 780 cm -1 are characteristic of the C=C stretching vibration and the unsubstituted CH=CH of the furan ring, respectively (Chuntanapum and Matsumura. 2009;Zhang et al 2012;Alakhras and Holze 2007). The peak located around 1200 cm -1 was associated with the the dimethylene ether bridges and/or -CO stretching of the benzene nucleus (-CH2OCH2-) Choi et al 2002).…”

Section: Insoluble Matter and Ft-ir Analysismentioning

confidence: 99%

Investigation of a New Natural Particleboard Adhesive Composed of Tannin and Sucrose. 2. Effect of Pressing Temperature and Time on Board Properties, and Characterization of Adhesive

Zhao¹,

Umemura²

2015

BioResources

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In a previous study by the authors, particleboard was manufactured using a new natural adhesive composed of tannin and sucrose. The optimal ratio between tannin and sucrose was 25/75, and the suitable resin content was 30 to 40 wt%. In this study, the effects of hot pressing temperature and hot pressing time on board properties were investigated. The optimal values for the hot pressing temperature and hot pressing time were found to be 220 °C and 10 min, respectively. When the particleboard was made under these optimum conditions, the physical properties of the particleboard bonded with tannin and sucrose met the requirement of the JIS A 5908 type 18 standard (2003). Thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), insoluble matter, and Fourier transform infrared spectroscopy (FT-IR) tests were carried out. The results of TGA and DSC measurements showed that the weight loss and endothermic reaction of the adhesive composed of tannin and sucrose at a ratio of 25/75 occurred at 204 and 215 °C, respectively. When the adhesive was heated at 220 °C for longer than 10 min, the level of insoluble matter was higher than 70 wt%. FT-IR analysis showed the existence of a furan ring, a carbonyl group, and dimethylene ether bridges in the cured adhesives before and after the boiling treatment. When the heating time was longer than 10 min, no further change of chemical structure was observed.

show abstract

In situ UV–vis- and FT-IR-spectroscopy of electrochemically synthesized furan–thiophene copolymers

Cited by 63 publications

References 69 publications

Electrochemical synthesis of polymer based on 4-(2-furyl) benzenamine: Electrochemical properties, characterization and applications

Electrochemical synthesis of polymer based on 4-(2-furyl) benzenamine: Electrochemical properties, characterization and applications

p-benzoquinone diimines and thiophene based alternating copolymers: organometallic catalyzed syntheses and elementary characterization

Investigation of a New Natural Particleboard Adhesive Composed of Tannin and Sucrose. 2. Effect of Pressing Temperature and Time on Board Properties, and Characterization of Adhesive

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