High Anhydrous Proton Conductivity of Imidazole-Loaded Mesoporous Polyimides over a Wide Range from Subzero to Moderate Temperature

Ye, Yingxiang; Zhang, Liuqin; Peng, Qinfang; Wang, Guan‐E; Shen, Yangbin; Li, Ziyin; Wang, Lihua; Ma, Xiang; Chen, Qian-huo; Zhang, Zhangjing; Xiang, Shengchang

doi:10.1021/ja511389q

Cited by 235 publications

(135 citation statements)

References 78 publications

Supporting

Mentioning

133

Contrasting

Order By: Relevance

“…Surprisingly, [1⊃pz⋅6 HCl] exhibits considerably high conductivity both under anhydrous and humid conditions at ambient temperature ( σ =9.7×10 −6 S cm −1 at 0 °C and 0 %RH; σ =2.48×10 −3 S cm −1 at 25 °C and 40 %RH; Figure S14 and Table S3 in the Supporting Information), which is a less‐common but potential characteristic of MOF‐based materials . Furthermore, its conductivity steeply increases upon increment of temperature up to the measured maximum temperature, 80 °C (Figure d and Figure S13 in the Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Achieving Amphibious Superprotonic Conductivity in a Cu^I Metal–Organic Framework by Strategic Pyrazinium Salt Impregnation

Khatua

Bar

Sheikh

et al. 2017

Chemistry A European J

View full text Add to dashboard Cite

Treatment of a pyrazine (pz)-impregnated Cu metal-organic framework (MOF) ([1⊃pz]) with HCl vapor renders an interstitial pyrazinium chloride salt-hybridized MOF ([1⊃pz⋅6 HCl]) that exhibits proton conductivity over 10 S cm both in anhydrous and under humid conditions. Framework [1⊃pz⋅6 HCl] features the highest anhydrous proton conductivity among the lesser-known examples of MOF-based materials exhibiting proton conductivity under both anhydrous and humid conditions. Moreover, [1⊃pz] and corresponding pyrazinium sulfate- and pyrazinium phosphate-hybridized MOFs also exhibit superprotonic conductivity over 10 S cm under humid conditions. The impregnated pyrazinium ions play a crucial role in protonic conductivity, which occurs through a Grotthuss mechanism.

show abstract

Section: Resultsmentioning

confidence: 99%

Achieving Amphibious Superprotonic Conductivity in a Cu^I Metal–Organic Framework by Strategic Pyrazinium Salt Impregnation

Khatua

Bar

Sheikh

et al. 2017

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…Owing to the crucial role of the proton responsive azo group in facilitating proton conduction pathways, Tp‐Azo COF with H 3 PO 4 shows decent proton conductivity values under both hydrous (9.9 × 10 −4 S cm −1 ) and anhydrous (6.7 × 10 −5 S cm −1 ) conditions. Xiang and co‐workers found that imidazole loaded tetrahedral polyimides with mesopores and good stability could demonstrate a high anhydrous proton conductivity over a wide temperature range from −40 to 90 °C . Zang and co‐workers introduced polyoxometalates PW 12 O 40 3− into a cationic COF with high thermal and chemical stability .…”

Section: Other Applicationsmentioning

confidence: 99%

Porous Polymers as Multifunctional Material Platforms toward Task‐Specific Applications

et al. 2018

Advanced Materials

351

245

View full text Add to dashboard Cite

have triggered serious threats to the survival and development of mankind. Consequently, exploring novel materials with task-specific applications is of fundamental importance for the sustainable development of economy and society. The burgeoning progress of nanomaterials in recent years has demonstrated that porosity is one of the essential factors in determining material properties for possible breakthroughs in their applications. Therefore, porous materials are playing important roles in many well-established applications and emerging technologies for challenging social and economic issues due to their intrinsic characteristics of large surface areas, open channels, and the possible control over the pore environment. According to International Union of Pure and Applied Chemistry, the pores of porous materials are classified into three categories by their pore sizes: micropores are smaller than 2 nm, mesopores are in the range of 2-50 nm, and macropores are larger than 50 nm. [1] Their pore walls include the organic skeleton (e.g., porous polymers, organic porous cages, and supramolecular organic frameworks), the inorganic skeleton (e.g., zeolites, porous carbons, and mesoporous silica), and the hybrid skeleton (e.g., metal-organic frameworks (MOFs)).Among the developed porous materials, porous polymers have attracted an increasing level of research interest owing to their potential to integrate the advantages of both porous materials and polymers. [2,3] Table 1 lists the characteristic structural features and properties of porous polymers, and gives a systematic comparison to other typical porous materials, such as zeolites, porous carbons, and MOFs. Porous polymers, zeolites, porous carbons, and MOFs share a number of features such as high permanent porosities, large surface areas, and designable pores and voids. However, they are different in several important aspects. The major advantages of porous polymers over many other porous materials are their chemical diversity and easy processability. Compared to zeolites and porous carbons, the synthesis of porous polymers is generally more versatile and can be approached in a way that conforms to the concept of rational materials design. Similar to MOFs, porous polymers inherit the excellent chemical and physical tunability afforded by the versatility of organic chemistry. Furthermore, Exploring advanced porous materials is of critical importance in the development of science and technology. Porous polymers, being famous for their all-organic components, tailored pore structures, and adjustable chemical components, have attracted an increasing level of research interest in a large number of applications, including gas adsorption/storage, separation, catalysis, environmental remediation, energy, optoelectronics, and health. Recent years have witnessed tremendous research breakthroughs in these fields thanks to the unique pore structures and versatile skeletons of porous polymers. Here, recent milestones in the diverse applications of porous polymers are presented, ...

show abstract

“…[15][16][17][18][19][20][21][22][23][24] Unlike semicrystalline or amorphousp olymers, the high crystallinity of MOFs is very suitable for studying protont ransport pathway and the conductionm echanism, demonstrating that protonc an transit through modified groups on the surfaceo ft he cavity (e.g., H 2 O, -SO 3 Ha nd -PO 3 H 2 )a nd guests in the cavity (e.g.,i midazole, histamine and ionic liquids). [5,16,[25][26][27][28] On the other hand, based on the outstanding advantagesofMOFs, the exploration of the practical application of electrically conductive MOFs has received extensive attention, especially in the field of chemoresistive sensors. [29][30][31][32][33][34] Representatively,D incǎ et al demonstrated an array of cross-reactive sensor for the identification of different typeso fv olatile organic compounds (VOCs).…”

Section: Introductionmentioning

confidence: 99%

Proton‐Conductive 3D Ln^III Metal–Organic Frameworks for Formic Acid Impedance Sensing

Liu

Dou

et al. 2019

Chemistry An Asian Journal

View full text Add to dashboard Cite

Metal-organic frameworks (MOFs) as new classes of proton-conducting materialsh ave been highlighted in recent years. Nevertheless, the exploration of proton-conducting MOFs as formic acid sensors is extremelyl acking. Herein, we prepared two highly stable 3D isostructurall anthanide(III) MOFs, {(M(m 3 -HPhIDC)(m 2 -C 2 O 4 ) 0.5 (H 2 O))·2 H 2 O} n (M = Tb (ZZU-1); Eu (ZZU-2)) (H 3 PhIDC = 2-phenyl-1H-imidazole-4,5-dicarboxylic acid), in which the coordinated and uncoordinated water molecules and uncoordinated imidazole Na toms play decisive roles for the high-performancep roton conductiona nd recognition ability for formic acid.B oth ZZU-1 and ZZU-2 showt emperature-and humidity-dependent proton-conducting characteristics with high conductivities of 8.95 10 À4 and 4.63 10 À4 Scm -1 at 98 %R Ha nd 100 8C, respectively.I mportantly,t he impedance values of the two MOF-based sensors decrease upon exposure to formica cid vapor generated from formic aqueous solutions at 25 8Cw ith good reproducibility.B yc omparing the changes of impedance values, we can indirectly determine the concentration of HCOOHi na queous solution.T he results showedt hat the lowest detectablec oncentrations of formic acid aqueous solutions are 1.2 10 À2 mol L À1 by ZZU-1 and 2.0 10 À2 mol L À1 by ZZU-2.F urthermore,t he two sensors can distinguish formic acid vapor from interfering vapors including MeOH, N-hexane, benzene, toluene, EtOH, acetone,a cetic acid and butane. Our research provides a new platform of proton-conductive MOFs-based sensors for detecting formic acid.[a] R.

show abstract

High Anhydrous Proton Conductivity of Imidazole-Loaded Mesoporous Polyimides over a Wide Range from Subzero to Moderate Temperature

Cited by 235 publications

References 78 publications

Achieving Amphibious Superprotonic Conductivity in a Cu^I Metal–Organic Framework by Strategic Pyrazinium Salt Impregnation

Achieving Amphibious Superprotonic Conductivity in a Cu^I Metal–Organic Framework by Strategic Pyrazinium Salt Impregnation

Porous Polymers as Multifunctional Material Platforms toward Task‐Specific Applications

Proton‐Conductive 3D Ln^III Metal–Organic Frameworks for Formic Acid Impedance Sensing

Contact Info

Product

Resources

About

High Anhydrous Proton Conductivity of Imidazole-Loaded Mesoporous Polyimides over a Wide Range from Subzero to Moderate Temperature

Cited by 235 publications

References 78 publications

Achieving Amphibious Superprotonic Conductivity in a CuI Metal–Organic Framework by Strategic Pyrazinium Salt Impregnation

Achieving Amphibious Superprotonic Conductivity in a CuI Metal–Organic Framework by Strategic Pyrazinium Salt Impregnation

Porous Polymers as Multifunctional Material Platforms toward Task‐Specific Applications

Proton‐Conductive 3D LnIII Metal–Organic Frameworks for Formic Acid Impedance Sensing

Contact Info

Product

Resources

About

Achieving Amphibious Superprotonic Conductivity in a Cu^I Metal–Organic Framework by Strategic Pyrazinium Salt Impregnation

Achieving Amphibious Superprotonic Conductivity in a Cu^I Metal–Organic Framework by Strategic Pyrazinium Salt Impregnation

Proton‐Conductive 3D Ln^III Metal–Organic Frameworks for Formic Acid Impedance Sensing