A porous 3D folic acid (F)-polyaniline (PANI) hybrid hydrogel (F-PANI), produced by in situ polymerization of aniline, exhibit highest compressive stress (15.1 kPa), hierarchical network morphology with BET surface area 236 m2/g. Here, PANI is present emeraldine salt (ES) state, which facilitates excellent adsorption anionic pollutants. It exhibits an extremely high capacity for Cr(VI) and during reduced to Cr(III).The electrical impedance spectra the adsorbed xerogel, support conversion...

Different synthetic procedures for water soluble polythiophenes and their applications in sensing, detection of biomolecules optoelectronic devices are discussed.

Controlled grafting of polyaniline from the surface carbon nano dots using ‘grafting from’ strategy is reported. The structured coated produced show excellent electrochemical performance.

Abstract Biodegradable, hydrophobic, and injectable liquid polymers are capable of achieving the minimally invasive, sustained, local release drugs. These hydrophobic also have potential in area regenerative medicine where biomaterial should be stable for a certain period then degrade to allow growth cells/tissues. This review presents exclusive coverage biocompatible pasty or that can injected without use any solvent drug delivery, tissue augmentation, application. The synthesis...

The low conductivity and poor active sites of MoS2 sheet present a huge barrier for it is exploitation catalytic applications in the hydrogen evolution reaction (HER). To alleviate this difficulty, we have synthesized quantum dots (QDs) having greater quantity edge by breaking up bulk using solvent exfoliation technique. QDs are embedded into polyaniline (PANI)–N,N′-dibenzoyl-l-cystine (DBC) hydrogel matrix situ polymerization aniline where DBC acts as gelator, dopant, cross-linker. hybrid...

Nanostructured hybrid conductive polyaniline (PANI) hydrogels are usually applied for supple energy storage devices owing to their flexible durability, fast-rate electrochemical activity, and good electrical conductivity. Here we prepare a solid-state supercapacitor (SC) by using N,N′-dibenzoyl-l-cystine (D)/MoS2 quantum dot (QD)/PANI (DMP) hydrogel via in situ polymerization of aniline monomer with the gelator D MoS2 QDs. TEM images show QDs embedded into three-dimensional (3D) fibrous...

In this Feature Article, we discuss the variation of optoelectronic properties with aggregation style polythiophene (PT) graft copolymers and polymer-modified graphene systems. Grafting flexible polymers on a PT chain exhibits several self-organized patterns under various conditions, causing different optical electronic properties, arising from conformational states conjugated chain. Graphene, zero band gap material, is functionalized both covalently noncovalently to create finite importing...

Polythiophene- g -poly(methacrylic acid) conjugates with protonated perylene diimide appended dipeptide show both AIE and AIQ in fluorescence, enhancement of dc-conductivity, generate OMEIC property, exhibit tuneable photo-switching behaviour.

Ionic polythiophenes are important conjugated polymers because of their excellent optical properties and water solubility. They classified as cationic, anionic zwitterionic polyelectrolytes. This review article describes concisely biological analytical applications. The specific detection different negatively charged biomolecules such DNA adenosine triphosphate, anions like halides toxic pseudo-halide (CN−) environmental pollutants, e.g. surfactants, is discussed. conformational changes...

Hierarchical graphene oxide-g-polyaniline nanocomposites with a controlled nanostructure of uniformly oriented one-dimensional (1D) polyaniline (PANI) nanocylinders over two-dimensional (2D) oxide (GO) surfaces are synthesized. PANI chains grown from GO surface attached oligoaniline units following "grafting from" approach, via chemical oxidative polymerization in aqueous acidic medium. Detailed kinetic analysis aniline polymerization, both the presence and an equivalent amount only, is...

Kinetic hydrate inhibitors (KHIs) have been used for over 25 years to prevent gas formation in oil and production flow lines, but they are some of the most expensive oilfield chemicals. The main component KHI formulations is a water-soluble polymer with many amphiphilic groups. Usually, commercial polymers, hydrophilic part these groups amide group. In addition, polymers often incompatible film-forming corrosion inhibitors. Therefore, we sought find cheaper effective KHIs that could also act...

The morphology of a cationic polythiophene changes from core–shell to mixed fibrillar network with black spots, quenching the PL-intensity and an enhanced photo switching property on addition peptide appended perylene bisimide.

Kinetic hydrate inhibitors (KHIs) are mostly used to prevent the deposition of gas hydrates in and condensate production flow lines. The main component a KHI formulation is water-soluble polymer, blended with solvents other synergists boost performance. performance limit terms subcooling factors restricts application range KHIs. Earlier, we reported on synergetic trialkylamine oxides polyalkyl(meth)acrylamides using high-pressure steel rocking cell experiments. In particular, blends...

Polythiophene-graft-polyampholyte (PTP) is synthesized using N,N-dimethylaminoethyl methacrylate and tert-butyl monomers by grafting from polythiophene backbone, followed hydrolysis. The resulting polymer exhibits aqueous solubility via formation of small-sized miceller aggregates with hydrophobic at the center radiating polyionic side chains (cationic or anionic depending on pH medium) outer periphery. critical micelle concentration PTP in acidic solution (0.025 mg/mL, = 2.7) determined...

Recently, there has been a growth of research on the nonconjugated polymer exhibiting fluorescence property and it would be exciting if is developed in zwitterionic polymers because their good water solubility. Poly(vinylidene fluoride) (PVDF) grafted with poly(dimethyl amino ethyl methacrylate) (PDMAEMA) fractionated highly water-soluble fraction (PVDM-1) quaternized 1,3-propane sultone, producing polymer, PVDF-g-PDMAEMA-sultone (PVDMS). PVDM-1 shows very low quantum yield (1%) water, but...

Water-based flow assurance issues include corrosion, scale, and gas hydrate formation. Chemical solutions to mitigate these usually require separate inhibitors, which sometimes can lead compatibility difficulties. Herein, we report studies on maleic-based copolymers combat corrosion with a view optimizing for scale inhibition also. The product of maleic anhydride:N-vinyl caprolactam copolymer reacted 3-dibutylaminopropylamine (MA:VCap-DBAPA) its amine oxide derivative (MA:VCap-DBAPA-AO) were...

A new fluorometric cyanide sensor using cationic polythiophene exhibits high sensitivity, selectivity with a low detection limit (4.4 ppb) in water.

A poly(vinylidine fluoride) graft random copolymer of t-butyl aminoethyl methacrylate (tBAEMA) and oligo(ethylene glycol) methyl ether (OEGMA, Mn = 300) [PVDF-g-P(tBAEMA–ran-OEGMA), PVBO] is synthesized by atom transfer radical polymerization (ATRP), PVBO fractionated to get a highly water-soluble fraction (PVBO-1) showing reversible on/off fluorescence behavior with gradual increase decrease in pH, respectively, achieving maximum quantum yield 0.18 at pH 12. PVBO-1 dissolved water shows...

A significant tuning of optoelectronic properties polythiophene (PT) chains due to Hofmeister iodide (I-) ion is demonstrated in ampholytic [polythiophene-g-poly{(N,N,N-trimethylamino iodide)ethyl methacrylate-co-methacrylic acid}, APT] at different pHs. In acidic medium, the absorption and emission signals PT chromophore exhibit appreciable blue shift presence I- as counteranion only. The cooperative effect undissociated -COOH quaternary ammonium groups immobilize near apolar chain causing...

Poly(N-isopropyl methacrylamide) (PNIPMAm) and copolymers are a class of commercially used kinetic hydrate inhibitors (KHIs) for deployment in oil gas field production flow lines. Here, we report improvements the KHI performance PNIPMAm presence various alkyl amine oxide (chain lengths C3–C6)-based synergists. A structure II hydrate-forming mixture was to examine slow constant cooling (ca. 1 °C/h) high-pressure (76 bar) rocking cell experiments. Blends as synergist with extended hold time...

Kinetic hydrate inhibitors (KHIs) have been used for over 25 years to prevent gas formation in oil and production flow lines. The main component KHI formulations is a water-soluble polymer with many amphiphilic groups, usually made up of amide groups adjacent hydrophobic 3-6 carbon atoms. polymers are one the most expensive oilfield chemicals. Therefore, methods make cheaper but effective KHIs could improve range applications. Continuing earlier work from our group maleic-based polymers,...

Polyanhydrides have been synthesized for decades by melt-polycondensation of diacid monomers and 5 to >10 times mole excess acetic anhydride form polymers with a polydispersity ranging from 2.5 6 low reproducibility. Hydrophobic segments in polyanhydrides are beneficial hinder the characteristic hydrolytic cleavage an bond that provides stable at room temperature. The objective this work is synthesize aliphatic various hydrophobic segments, controllable reproducible molecular weight,...

Tuning the electronic structure of a π-conjugated polymer from responsive side chains is generally done to get desired optoelectronic properties, and it would be very fruitful when light used as an exciting tool that can also affect backbone chain conformation. For this purpose, polythiophene- g-poly-[ N-(6-methyluracilyl)- N, N-dimethylamino chloride]ethyl methacrylate (PTDU) synthesized. On exposure diffuse sunlight, uracil moieties grafted cause absorption maximum PTDU solution show...

Stimuli-responsive, water soluble, nontoxic, star-copolymers showing reversible encapsulation and release of hydrophobic dye/drug molecule with increasing temperature decreasing pH.

Abstract Several chemical problems can occur during the production of oil and gas through flow lines. This includes corrosion, scale deposition hydrate plugging. Three separate chemicals may be needed to treat these issues. Kinetic inhibitors (KHIs) are used in cold or natural lines prevent formation plugging line with hydrates. They often injected concomitantly other such as corrosion inhibitors. KHIs specific low molecular weight water-soluble polymers amphiphilic groups formulated...