A colorimetric/luminescence sensor for detecting MeCN in water: Towards direct detection of dissolved organic contaminants

Norton, Amie E.; Abdolmaleki, Mahmood Karimi; Ringo, Jessica M.; Shingade, Vikas M; Cashen, Christina; Sharma, Moni; Connick, William B.; Chatterjee, Sayandev

doi:10.1016/j.snb.2020.129207

Cited by 12 publications

(9 citation statements)

References 50 publications

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“…This is presumably a consequence of the multicomponent groundwater matrix perturbing the electronic structure of the 1 ·PF 6 salt differently as well as the interaction of NO 3 – with the multicomponent matrix, which cumulatively contribute to the observed spectral profile, and its differences from the simpler NO 3 – /DI water matrix. A similar matrix dependence was demonstrated recently in our studies on the detection of aqueous MeCN by the 1 ·PF 6 salt …”

Section: Resultssupporting

confidence: 88%

“…Luminescence spectroscopy has recently been demonstrated to be a highly sensitive technique for diverse analyte quantifications. ,, To test whether the emission intensity can be used for aqueous NO 3 – quantification, equal amounts of 1 ·PF 6 @CPG-383 were exposed to aqueous solutions with different NO 3 – concentrations (1 mL of 10 –4 to 1.5 M, pH = 0). Three independent measurements were conducted for each concentration.…”

Section: Resultsmentioning

confidence: 99%

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pH-Mediated Colorimetric and Luminescent Sensing of Aqueous Nitrate Anions by a Platinum(II) Luminophore@Mesoporous Silica Composite

Norton

Sharma

Cashen

et al. 2021

ACS Appl. Mater. Interfaces

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Increased levels of nitrate (NO3 –) in the environment can be detrimental to human health. Herein, we report a robust, cost-effective, and scalable, hybrid material-based colorimetric/luminescent sensor technology for rapid, selective, sensitive, and interference-free in situ NO3 – detection. These hybrid materials are based on a square-planar platinum(II) salt [Pt(tpy)Cl]PF6 (tpy = 2,2′;6′,2″-terpyridine) supported on mesoporous silica. The platinum salt undergoes a vivid change in color and luminescence upon exposure to aqueous NO3 – anions at pH ≤ 0 caused by substitution of the PF6 – anions by aqueous NO3 –. This change in photophysics of the platinum salt is induced by a rearrangement of its crystal lattice that leads to an extended Pt···Pt···Pt interaction, along with a concomitant change in its electronic structure. Furthermore, incorporating the material into mesoporous silica enhances the surface area and increases the detection sensitivity. A NO3 – detection limit of 0.05 mM (3.1 ppm) is achieved, which is sufficiently lower than the ambient water quality limit of 0.16 mM (10 ppm) set by the United States Environmental Protection Agency. The colorimetric/luminescence of the hybrid material is highly selective to aqueous NO3 – anions in the presence of other interfering anions, suggesting that this material is a promising candidate for the rapid NO3 – detection and quantification in practical samples without separation, concentration, or other pretreatment steps.

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 99%

pH-Mediated Colorimetric and Luminescent Sensing of Aqueous Nitrate Anions by a Platinum(II) Luminophore@Mesoporous Silica Composite

Norton

Sharma

Cashen

et al. 2021

ACS Appl. Mater. Interfaces

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“…Solvent molecules are abundant and representative ones. [ 38 ] But their tens of millimolar LODs are hardly to disturb the sensing behavior toward trace NAAs in this work. According to Figures S15 and S16, Supporting Information, the luminescent intensities of the sensor had negligible alternation after adding various 0.001 M isometric organic solvents.…”

Section: Resultsmentioning

confidence: 86%

Highly Sensitive and Reliable NIR Luminescent Sensing Toward Nitro‐Aromatic Antibiotics in Water

Wang

Shi

Zhang

et al. 2021

Adv Materials Technologies

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Near‐infrared (NIR) light features less photon scatter and deeper penetration, thereby providing a sensitive and reliable platform for qualifying and quantifying trace organic contaminants in water medium. Herein, a lanthanide/β‐diketone complex, Yb(dmh)3(phen) (dmh = 2,6‐dimethyl‐3,5‐heptanedione, phen = 1,10‐phenanthroline), is synthesized and performs characteristic NIR luminescence of Yb3+ ions. The outstanding photophysical properties result from the combination effects of excited‐state inter‐ligand charge transfer, ligand‐to‐metal energy transfer, and high structural symmetry. Noteworthily, this NIR luminophore exhibits state‐of‐the‐art sensitivity toward nitro‐aromatic antibiotics in water. The limits of detection are lower to sub‐nanomolar level for nitroimidazoles (metronidazole 0.18 nM; dimetridazole 0.23 nM; ornidazole 0.28 nM) and even picomolar level for nitrofurans (nitrofurantoin 43 pM; nitrofurazone 46 pM). This exciting sensitivity attributes to photo‐induced electron transfer and inner filter effect between sensor and adsorbed analytes. The sensor is also capable of distinguished stability, selectivity, competitiveness, and anti‐interference, which makes it far better suited to the commercial application. The successfully developed technique of NIR luminescence sensing extends the platform of optical devices and sensing materials, being of practical value in monitoring water quality.

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“…This interaction can cause a metal···metal distance modification thus causing a change in the color of the complex as well as altering the luminescent properties of the complex. Our group has shown that [Pt(tpy)Cl]PF 6 , whether in powder or crystalline form, is an effective sensor for the detection of acetonitrile, nitrates, and perchlorates. , Moreover, we have previously reported that [Pt(Me 2 bizmpy)Cl]Cl (Me 2 bizmpy −2,6-bis( N -methylbenzimidazol-2-yl) undergoes a noticeable color change from yellow-orange to red when exposed to methanol, ethanol, chloroform, and acetonitrile vapor. On the other hand, the PF 6 – salt undergoes a yellow to violet color change when exposed to acetonitrile and many other solvents including water, short chain alcohols, diethyl ether, chlorinated solvents (CH 2 Cl 2 , CHCl 3 , CCl 4 ), acetone, hexanes, and benzene .…”

Section: Introductionmentioning

confidence: 99%

“…This interaction can cause a metal•••metal distance modification thus causing a change in the color of the complex as well as altering the luminescent properties of the complex. Our group has shown that [Pt(tpy)Cl]PF 6 , whether in powder or crystalline form, is an effective sensor for the detection of acetonitrile, 10 nitrates, 11 and perchlorates. 12,13 Moreover, we have previously reported that [Pt(Me 2 bizmpy)Cl]Cl (Me 2 bizmpy −2,6-bis(N-methylbenzimidazol-2-yl) undergoes a noticeable color change from yellow-orange to red when exposed to methanol, ethanol, chloroform, and acetonitrile vapor.…”

Section: ■ Introductionmentioning

confidence: 99%

Water’s Role in Polymorphic Platinum(II) Complexes

et al. 2021

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Solvent plays a vital role in the recrystallization process and resulting crystallinity of materials. This role is of such importance that it can control the stability and utility of materials. In this work, the inclusion of a solvent in the crystalline lattice, specifically water, drastically affects the overall stability of two platinum polymorphs. [Pt(tpy)Cl]BF4 (tpy = 2,2′;6′2″-terpyridine) crystallizes in three forms, red (1R) and blue (1B) polymorphs and a yellow nonsolvated form (2). 1R is the more stable of the two polymorphs, whereas 1B loses crystallinity upon dehydration at ambient conditions resulting in the formation of 2. Close examination of the solid-state extended structures of the two polymorphs reveals that 1R has a lattice arrangement that is more conducive to stronger intermolecular interactions compared to 1B, thereby promoting greater stability. In addition, these two polymorphs exhibit unique vapochromic responses when exposed to various solvents.

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A colorimetric/luminescence sensor for detecting MeCN in water: Towards direct detection of dissolved organic contaminants

Cited by 12 publications

References 50 publications

pH-Mediated Colorimetric and Luminescent Sensing of Aqueous Nitrate Anions by a Platinum(II) Luminophore@Mesoporous Silica Composite

pH-Mediated Colorimetric and Luminescent Sensing of Aqueous Nitrate Anions by a Platinum(II) Luminophore@Mesoporous Silica Composite

Highly Sensitive and Reliable NIR Luminescent Sensing Toward Nitro‐Aromatic Antibiotics in Water

Water’s Role in Polymorphic Platinum(II) Complexes

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