Exploring silver ionic liquids for reaction-based gas sensing on a quartz crystal microbalance

Li, Hsin‐Yi; Hsu, Tzu-Hsuan; Chen, Chien-Yuan; Tseng, Ming‐Chung; Chu, Yen‐Ho

doi:10.1039/c5an01404b

Cited by 9 publications

(10 citation statements)

References 14 publications

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“…It is of note that this optimized synthesis of ionic liquids 1 and 2, in our hands required no chromatographic separation. In our research, we are interested in developing new ionic liquids or improving the synthesis of known ionic liquids and we have an ongoing program to evaluate ionic liquids as stable media for chemical synthesis [7][8][9][10][11] and as functional materials for biochemical applications [12,13]. We recently reported the preparation of bicyclic 1,2,3-triazolium ionic liquids in four steps with good yields [1].…”

Section: Resultsmentioning

confidence: 99%

Exploiting 1,2,3-Triazolium Ionic Liquids for Synthesis of Tryptanthrin and Chemoselective Extraction of Copper(II) Ions and Histidine-Containing Peptides

Chen

Cheng

et al. 2016

Molecules

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Based on a common structural core of 4,5,6,7-tetrahydro[1,2,3]triazolo [1,5-a]pyridine, a number of bicyclic triazolium ionic liquids 1-3 were designed and successfully prepared. In our hands, this optimized synthesis of ionic liquids 1 and 2 requires no chromatographic separation. Also in this work, ionic liquids 1, 2 were shown to be efficient ionic solvents for fast synthesis of tryptanthrin natural product. Furthermore, a new affinity ionic liquid 3 was tailor-synthesized and displayed its effectiveness in chemoselective extraction of both Cu(II) ions and, for the first time, histidine-containing peptides.

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Section: Resultsmentioning

confidence: 99%

Exploiting 1,2,3-Triazolium Ionic Liquids for Synthesis of Tryptanthrin and Chemoselective Extraction of Copper(II) Ions and Histidine-Containing Peptides

Chen

Cheng

et al. 2016

Molecules

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“…The PVD techniques are more environmentally friendly than traditional coating methods, with several applications from scientific and industrial points of view.Infact, thin films produced by PVD are being developed and applied in electrical and semiconductor manufactories, for example, in organic electronics and optoelectronics (OLEDs, OPVs, OFETs), andu sed for energy conservation and/or generation. [26][27][28] The trend shifts observed fort he thermodynamic properties of vaporization of the [C n C 1 im][Ntf 2 ] IL series, which occur at [C 6 C 1 im][Ntf 2 ]( the CAS, or criticala lkyl size), are evidenceo ft he nanostructuration of ILs. [21] High-accuracyv apor-pressure data for the extended[ C n C 1 im] [Ntf 2 ]i onic liquid series were determined by Santos et al by using aK nudsen effusion apparatus combined with aQ CM and the authors contributed for ab etter understanding of the relationship between cohesive energies, volatilities, and liquid structures of ILs.…”

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confidence: 99%

“…[25] Recently,t here have been other groups who have startedu sing aQ CM and PVD to measure vapor pressures of ILs and prepare ultrathin IL films by using vapor deposition techniques. [26][27][28] The trend shifts observed fort he thermodynamic properties of vaporization of the [C n C 1 im][Ntf 2 ] IL series, which occur at [C 6 C 1 im][Ntf 2 ]( the CAS, or criticala lkyl size), are evidenceo ft he nanostructuration of ILs. Another important contribution,p resented by Coutinho et al,h as shown that the surface tension of this class of ionic liquidsd ecreases with an increase in the cation alkyl side chain size up to aliphatic chains no longer than hexyl, labeled as the CAS.…”

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Morphology of Imidazolium‐Based Ionic Liquids as Deposited by Vapor Deposition: Micro‐/Nanodroplets and Thin Films

2016

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The morphology of micro-and nanodroplets and thin films of ionic liquids (ILs) prepared through physical vapor deposition is presented. The morphology of droplets deposited on indium-tin-oxide-coated glass is presented for the extended 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([CnC1im][Ntf2]; n= 1-8) series, and the results show the nano-structuration of ILs. The use of in-vacuum energetic particles enhances/increases the nanodroplets mobility/coalescence mechanisms and can be a pathway to the fabrication of thin IL films. Ionic liquids (ILs) are a family of materials that offer a range of properties that can be adjusted to optimize their performance in a diversity of technological applications. [1-3] ILs share common characteristics, such as ionic conductivity, good thermal stability, and extremely low vapor pressure at room temperature. [4-6] In recent years, extensive studies of the thermo-physical properties of ILs have shown that almost none of these properties are shared across the IL range due to structural/nanostructural modifications. [7-9] ILs are becoming particularly attractive for many applications, such as solvents for electro-chemistry (electrically conducting fluids, electrolytes), sealants, chemical industry, gas handling, pharmaceuticals, cellulose processing, dye-sensitized solar cells, waste recycling, batteries, dispersion of nanomaterials, and electrode-electrolyte interfaces in high-vacuum systems. [10-15] Recently, the liquid/vacuum and liquid/solid interfaces of ILs have been of great relevance for most of the above-mentioned applications, and model surface studies and molecular orientation/ordering investigations of ILs have been performed on surfaces with different chemical properties: Au, Ni, silica, graphene, alumina, glass, and mica. [16-20] In some cases, thin films of ILs have been prepared by using impregnation techniques with solutions of ILs in volatile solvents, followed by solvent removal by evaporation. Thus, nanostructures of ILs can be prepared by spin/dip-coating methods and the films have low thicknesses and exceptional lubrication characteristics. [20] In recent years, the focus has been on physical vapor deposition (PVD) of ILs on different surfaces [16, 18, 19]

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“…Since 2010, we have put in efforts to the development of a series of affinity ionic liquids (AILs) targeted specifically for chemoselective gas sensing [ 110 , 111 , 112 , 113 , 114 , 115 , 116 , 117 ]. Albeit the bulk reports from others in the past have been successful in detecting gas molecules via physical adsorption, the challenge for those methods remains for better specificity to discriminate structurally similar gas molecules from others.…”

Section: Ionic Liquid On Qcm For Chemoselective Gas Sensingmentioning

confidence: 99%

Affinity Ionic Liquids for Chemoselective Gas Sensing

Chang

Chang³

et al. 2018

Molecules

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Selective gas sensing is of great importance for applications in health, safety, military, industry and environment. Many man-made and naturally occurring volatile organic compounds (VOCs) can harmfully affect human health or cause impairment to the environment. Gas analysis based on different principles has been developed to convert gaseous analytes into readable output signals. However, gas sensors such as metal-oxide semiconductors suffer from high operating temperatures that are impractical and therefore have limited its applications. The cost-effective quartz crystal microbalance (QCM) device represents an excellent platform if sensitive, selective and versatile sensing materials were available. Recent advances in affinity ionic liquids (AILs) have led them to incorporation with QCM to be highly sensitive for real-time detection of target gases at ambient temperature. The tailorable functional groups in AIL structures allow for chemoselective reaction with target analytes for single digit parts-per-billion detection on mass-sensitive QCM. This structural diversity makes AILs promising for the creation of a library of chemical sensor arrays that could be designed to efficiently detect gas mixtures simultaneously as a potential electronic in future. This review first provides brief introduction to some conventional gas sensing technologies and then delivers the latest results on our development of chemoselective AIL-on-QCM methods.

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Exploring silver ionic liquids for reaction-based gas sensing on a quartz crystal microbalance

Cited by 9 publications

References 14 publications

Exploiting 1,2,3-Triazolium Ionic Liquids for Synthesis of Tryptanthrin and Chemoselective Extraction of Copper(II) Ions and Histidine-Containing Peptides

Exploiting 1,2,3-Triazolium Ionic Liquids for Synthesis of Tryptanthrin and Chemoselective Extraction of Copper(II) Ions and Histidine-Containing Peptides

Morphology of Imidazolium‐Based Ionic Liquids as Deposited by Vapor Deposition: Micro‐/Nanodroplets and Thin Films

Affinity Ionic Liquids for Chemoselective Gas Sensing

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