Pyrrole containing ionic liquid as tecton for construction of ordered mesoporous silica with aligned polypyrrole nanowires in channels

Zhang, Weixia; Cui, Jiecheng; Lin, Changxu; Wu, Yiguang; Ma, Li; Wen, Yuanqiao; Li, Guangtao

doi:10.1039/b820949a

Cited by 13 publications

(9 citation statements)

References 31 publications

(72 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absorption peak at 490 nm was assigned to Ppy, which increased with higher n. These results indicate that more Ppy was deposited on the membrane surface with increasing immersion time. [28][29][30]…”

Section: Resultsmentioning

confidence: 99%

Surface modification of heteropoly acid/SPEEK membranes by polypyrrole with a sandwich structure for direct methanol fuel cells

Zhang

et al. 2010

J. Mater. Chem.

View full text Add to dashboard Cite

A series of SPEEK/HPW/Ppy-n composite membranes with a sandwich structure were successfully prepared by surface modification with polypyrrole (Ppy) in order to stabilize phosphotungstic acid (HPW) in poly(ether ether ketone)s (SPEEKs) and reduce the methanol crossover. Ppy coatings with a large number of secondary ammonium groups (NH 2 + ) interact with anions of HPW to decrease HPW leaching from the membrane. In addition, the hydrophobic Ppy layers allow for little methanol transport, which leads to a significant decline in methanol crossover with reasonable levels of proton conductivity. The properties of the membranes were investigated in detail by UV, SEM, ac impedance, and TGA. As observed, Ppy-modified membranes were better at immobilizing HPW and exhibited higher selectivities than previously reported SPEEK/HPW composite membranes. All the results indicate that the SPEEK/HPW/Ppy-n composite membranes are excellent candidates for direct methanol fuel cells.

show abstract

Section: Resultsmentioning

confidence: 99%

Surface modification of heteropoly acid/SPEEK membranes by polypyrrole with a sandwich structure for direct methanol fuel cells

Zhang

et al. 2010

J. Mater. Chem.

View full text Add to dashboard Cite

show abstract

“…Principally, larger π-conjugated chromophores are needed to allow a lower-band-gap electronic transition by absorbing light of a longer wavelength. Because of intermolecular π–π interactions, it is challenging to formulate these large chromophores as ionic liquids with a melting point below room temperature. − …”

mentioning

confidence: 99%

Dark Ionic Liquid for Flexible Optoelectronics

et al. 2018

Langmuir

View full text Add to dashboard Cite

Owing to a wide visual angle, few aberrations, and great depth of focus, flexible optoelectronics have become one subject of intense investigation for rescue equipment and endoscopy tools. Ionic liquids are rising as a kind of fluidic "semiconductor" with advantages of high flexibility and self-healing. However, challenges in the molecular design of photoresponsive ionic liquids impede the exploration of ionic liquids as intrinsic flexible liquid optoelectronics. This work demonstrated an imidazole-based ionic liquid covalently linked with a polypyrrole oligomer by alkyl chains. Such an ionic liquid has wide absorption from the visible light range to the near-infrared light range. The imidazole moiety acts as an electrical conductor which is thermally responsive. On the other hand, the polypyrrole segment serving as a light antenna is able to convert light energy to thermal heat. The alkyl linker tailors the energy transfer between polypyrrole and an imidazole cation. Negligible molecular aggregation and phase separation are attributed to the preservation of the fluidic nature at room temperature. This photoresponsive ionic liquid is successfully exploited as a flexible light detector that is adaptable to special sensing tests in bending states.

show abstract

“…[11] In a typical preparation, Py(CH 2 ) 12 MIM + Br À (0.3 g) was dissolved in HCl aqueous solution (5.0 g, pH 3). Clearly, this three-step procedure provides a controllable rational route for producing large-scale well-defined polymer capsules with tunable size and shell thickness.…”

mentioning

confidence: 99%

“…The synthesis of the surfactant (Py(CH 2 ) 12 MIM + Br À )-(CH 2 ) 12 was described in our previous work. [11] In a typical preparation, Py(CH 2 ) 12 MIM + Br À (0.3 g) was dissolved in HCl aqueous solution (5.0 g, pH 3). After 30 min of stirring, tetraethoxysilane (TEOS, 0.6 g) was added dropwise under vigorous stirring, and a TEOS/Py(CH 2 ) 12 MIM + Br À /H 2 O molar ratio of 1:0.12:100 was established in the reaction mixture.…”

mentioning

confidence: 99%

Facile Fabrication of Stimuli‐Responsive Polymer Capsules with Gated Pores and Tunable Shell Thickness and Composite

et al. 2011

Self Cite

View full text Add to dashboard Cite

A hollow victory: A multifunctional polymerizable ionic liquid (IL)‐based surfactant is used in the synthesis of silica spheres with tunable size. Hollow capsules with a mesoporous polymer‐network shell and pendant IL moieties are then fabricated by template synthesis (see picture). The pore size of the shell is reversibly adjustable by exchange of counteranions (blue and red circles) of the pendant IL units.

show abstract

Pyrrole containing ionic liquid as tecton for construction of ordered mesoporous silica with aligned polypyrrole nanowires in channels

Cited by 13 publications

References 31 publications

Surface modification of heteropoly acid/SPEEK membranes by polypyrrole with a sandwich structure for direct methanol fuel cells

Surface modification of heteropoly acid/SPEEK membranes by polypyrrole with a sandwich structure for direct methanol fuel cells

Dark Ionic Liquid for Flexible Optoelectronics

Facile Fabrication of Stimuli‐Responsive Polymer Capsules with Gated Pores and Tunable Shell Thickness and Composite

Contact Info

Product

Resources

About