High‐quality freestanding flexible poly(5‐(2,3‐dihydrothieno[3,4‐<i>b</i>][1,4]dioxin‐5‐yl)‐1<i>H</i>‐indole) film: Electrosyntheses, characterization, and optical properties

Wang, R.; Ye, G.; Zhou, Weiqiang; Jiang, Fengxing; Wu, Yanli; Hou, Jian; Li, D.; Wu, Jianzhong; Chang, Yanan; Liang, Aiqin; Xu, Jingkun; Du, Yukou

doi:10.1002/app.47016

Cited by 5 publications

(4 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fluorescence spectra in Figure show that the emission peaks of the polymers are located at about 500–520 nm. It is reported in literature that the photoluminescence of various derivatives of PIn is observed in the region of 430–470 nm. ,, A redshift by 16 nm and a significant increase in the photoluminescence intensity relative to PClPA are observed for a 2E3MPIn sample (Table ). Presumably, this phenomenon is because of the formation of an indole structure.…”

Section: Resultsmentioning

confidence: 82%

Synthesis and Physicochemical Properties of Poly(2-ethyl-3-methylindole)

et al. 2020

View full text Add to dashboard Cite

Intramolecular acid-catalyzed cyclization was suggested for the first time for a polyaniline derivative, namely, poly[2-(2-chloro-1-methylbut-2-en-1-yl)aniline] (PClPA), to give hitherto unknown poly(2-ethyl-3-methylindole) (2E3MPIn) in a high yield (81%). This is the first example of synthesizing a polymer of the indole series with 1,5-addition of monomeric units that are incorporated into the polymer structure. The physicochemical properties of the new polymer were studied. Its structure was confirmed by spectral methods and quantum-chemical calculations. The 2E3MPIn polymer showed good thermal stability compared to the starting PClPA polymer. A study of the photoluminescence of polymers showed that the emission spectrum of 2E3MPIn demonstrated a bathochromic shift (16 nm) and a considerable increase in the luminescence intensity in comparison to PClPA. The 2E3MPIn sample was found to possess photoconductivity. Irradiation of the polymer film increases the electrical conductivity by a factor of 2. The electrochemical properties obtained from the UV–vis spectrum and cyclic voltammograms suggest that 2E3MPIn has good electroactivity. A sample of 2E3MIn demonstrates a fine porous structure resembling a “sponge”. In addition, the PClPA and 2E3MPIn samples synthesized were used as sensitive materials in resistive moisture sensors. The 2E3MPIn polymer demonstrated a higher response than PClPA to changes in the environment humidity. The observed changes in the physicochemical properties of 2E3MPIn compared to PClPA confirm that the polyheterocyclization reaction occurs successfully and can be considered as an efficient way for synthesizing new functional polymers of the indole series.

show abstract

Section: Resultsmentioning

confidence: 82%

Synthesis and Physicochemical Properties of Poly(2-ethyl-3-methylindole)

et al. 2020

View full text Add to dashboard Cite

show abstract

“…A polyol obtained by glycolysis of waste rigid PU foams was used to produce a new rigid foam. This new foam showed higher compressive strength, thermal insulation, and self-extinguishing property compared with conventional foam [17]. Liquefied rice husk with different NCO/OH ratios was used to produce PU foams [18].…”

Section: Foamsmentioning

confidence: 99%

Polyurethane: Recent Engineering Contributions

Feldman

2020

AJOP

View full text Add to dashboard Cite

“…The nitrogen‐containing heteroaromatic polymer has several intriguing properties, but the main barrier is its poor mechanical stability, brittleness and low processability. Polyindole (PIN) films are often particularly rigid, brittle, insoluble, and infusible among nitrogen‐containing conductive polymers 4,5 . Thus, the processability of PIN is an important factor to be addressed for better applicability in various fields.…”

Section: Introductionmentioning

confidence: 99%

“…and infusible among nitrogen-containing conductive polymers. 4,5 Thus, the processability of PIN is an important factor to be addressed for better applicability in various fields. In the literature, PIN has been modified in a variety of ways, including the addition of substitute groups in the main chain, the synthesis of soluble precursors, the preparation of composites through chemical oxidation methods and the blending of PIN with one or more flexible and stable polymers.…”

mentioning

confidence: 99%

Effect of titanium dioxide on the structural, thermal, and electrical properties of chlorinated natural rubber/poly (indole) blend nanocomposites for flexible nanoelectronic devices

Parvathi

Ramesan

2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

The synthesis of highly flexible conductive rubber blend nanocomposites using a conductive polymer with metal oxide is a new and promising approach. In this work, the effect of titanium dioxide (TiO 2 ) on the performance of chlorinated natural rubber/polyindole (Cl-NR/PIN) blend nanocomposites was systematically studied. Fourier-transform infrared spectra revealed the successful incorporation of nanoparticles in the blend system. UV analysis assessed the increased absorption spectra of the nanocomposite compared to the pure blend. The X-ray diffraction confirms the presence of TiO 2 nanostructure in the blend. The high resolution transmission electron microscope results exhibited the uniform dispersion of TiO 2 in the blend. Differential scanning calorimetry and thermogravimetric analysis show the increased glass transition temperature and thermal stability of the blend nanocomposite with an increase in TiO 2 concentration. The linear low-frequency AC conductivity demonstrated the occurrence of electrode polarization and the exponential increase in AC conductivity after a threshold frequency illustrated the semiconducting behavior of the composites. The maximum dielectric constant and AC conductivity were measured for the composite with 5 wt% filler loading, as the threshold level for the maximum interfacial contact. The hopping conduction, activation energy, improved conductivity and dielectric properties suggest that these blend nanocomposite films are promising candidates for the development of flexible energy storage devices.chlorinated natural rubber/polyindole blend, dielectric parameters, nanocomposites, temperature dependent conductivity, thermal properties, titanium dioxide | INTRODUCTIONConducting polymers are of great interest due to their diverse applications such as rechargeable batteries, modified electrodes, biosensors, electrochromic displays, and primer layers that prevent corrosion. [1][2][3] The nitrogencontaining heteroaromatic polymer has several intriguing properties, but the main barrier is its poor mechanical stability, brittleness and low processability. Polyindole (PIN) films are often particularly rigid, brittle, insoluble,

show abstract

High‐quality freestanding flexible poly(5‐(2,3‐dihydrothieno[3,4‐b][1,4]dioxin‐5‐yl)‐1H‐indole) film: Electrosyntheses, characterization, and optical properties

Cited by 5 publications

References 60 publications

Synthesis and Physicochemical Properties of Poly(2-ethyl-3-methylindole)

Synthesis and Physicochemical Properties of Poly(2-ethyl-3-methylindole)

Polyurethane: Recent Engineering Contributions

Effect of titanium dioxide on the structural, thermal, and electrical properties of chlorinated natural rubber/poly (indole) blend nanocomposites for flexible nanoelectronic devices

Contact Info

Product

Resources

About