Fluorescent one-dimensional nanostructures from a group of uniform materials based on organic salts

Rooy, Sergio L. de; El‐Zahab, Bilal; Li, Min; Das, Susmita; Broering, Ellen; Chandler, Lin; Warner, Isiah M.

doi:10.1039/c1cc12478a

Cited by 37 publications

(38 citation statements)

References 41 publications

(42 reference statements)

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“…Interactions between molecules located in neighbouring pores can act in a cooperative way and are known to induce important changes in the behaviour of several nonpolar and polar fluids inside nanopores. [70,71] Correlation effects might play an important role in determining the macroscopic properties of the electrical double-layer near charged surfaces [25,26]; these effects deserve further investigation in follow-up studies.…”

Section: Discussionmentioning

confidence: 99%

“…carbon nanotubes, templated mesoporous silicas, anodic alumina membranes) is one step in the synthesis of optically active (fluorescent) and magnetic nanomaterials based on ILs. [21][22][23][24][25][26][27] These nanomaterials (dubbed 'GUMBOS' , for Group of Uniform Materials Based on Organic Salts) have the highly tunable properties of ILs and can be prepared via simple procedures, and thus have potential applications in optoelectronics, photovoltaics, separations, analytical chemistry and biomedicine. Furthermore, ILs confined inside sol-gels (ionogels) have potential applications as electrolyte membranes and in optics, catalysis and biocatalysis, drug delivery and sensing and biosensing.…”

Section: Introductionmentioning

confidence: 99%

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Molecular modelling of ionic liquids in the ordered mesoporous carbon CMK-5

Monk

Singh

et al. 2015

Molecular Simulation

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Molecular modelling of ionic liquids in the ordered mesoporous carbon CMK-5" (2015). NASA Publications. 174. http://digitalcommons.unl.edu/nasapub/174 ], confined in a model CMK-5 material, which consists of amorphous carbon nanopipes (ACNPs) arranged in a hexagonal array. We compare our findings against the behaviour of the same ILs inside an isolated ACNP (i.e. no IL adsorbed on the outer surface of the ACNP) and inside a model CMK-3 material (which is similar to CMK-5, but is formed by amorphous carbon nanorods). Our results indicate that the presence of IL adsorbed in the outer surface of an uncharged ACNP in CMK-5 affects the dynamics and the density of an IL adsorbed inside the ACNP and vice versa. ILs adsorbed outside the nanopipes in CMK-5 (i.e. with IL also adsorbed inside the nanopipes) have faster dynamics and remain closer to the carbon surfaces when compared to the same ILs adsorbed on CMK-3 materials. ] moves faster when it is inside an isolated ACNP than when it is inside the ACNPs in CMK-5 (i.e. with IL adsorbed outside the nanopipes).

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecular modelling of ionic liquids in the ordered mesoporous carbon CMK-5

Monk

Singh

et al. 2015

Molecular Simulation

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“…In recent years, Warner et al embarked upon the development of solid-phase ILs, which were synthesized based on solid-phase ionic organic materials [3]. They coined the term "GUMBOS" (Group of Uniform Materials Based on Organic Salts) to differentiate them from traditional ILs [5]. These materials exhibited novel solidphase characteristics with highly tunable properties, such as melting point, solubility, hydrophobicity, polarity, thermal stability, toxicity, and viscosity, showing potential new applications in various fields of material chemistry [6], analytical chemistry [7], biomedicine [8], and photovoltaics [9].…”

Section: Introductionmentioning

confidence: 99%

Bis(trifluoromethylsulfonyl)imide‐based frozen ionic liquid for the hollow‐fiber solid‐phase microextraction of dichlorodiphenyltrichloroethane and its main metabolites

Pang

Peng

Pang

et al. 2017

J of Separation Science

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1-Hexadecyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide is a solid-phase ionic organic material under ambient temperature and is considered as a kind of "frozen" ionic liquid. Because of their solid-state and ultra-hydrophobicity, "frozen" ionic liquids are able to be confined in the pores of hollow fiber, based on which a simple method was developed for the hollow-fiber solid-phase microextraction of dichlorodiphenyltrichloroethane and its main metabolites. Under optimized conditions, the proposed method results in good linearity (R > 0.9965) over the range of 0.5-50 μg/L, with low limits of detection and quantification in the range of 0.33-0.38 and 1.00-1.25 μg/L, respectively. Intra- and interday precisions evaluated by relative standard deviation were 3-6 and 1-6%, respectively. The spiked recoveries of dichlorodiphenyltrichloroethane and its main metabolites from real water samples were in the range of 64-113 and 79-112%, respectively, at two different concentration levels. The results suggest that "frozen" ionic liquids are promising for use as a class of novel sorbents.

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“…We have reported functional, as well as multifunctional nanoGUMBOS with various morphologies and spectral features. 16, 17, 18 …”

Section: Introductionmentioning

confidence: 99%

Ionic liquid-based fluorescein colorimetric pH nanosensors

et al. 2013

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A novel pH sensitive, colorimetric ionic liquid nanosensor based on phosphonium salts of fluorescein is reported. Herein, fluorescein salts of various stoichiometries were synthesized by use of a trihexyltetradecylphosphonium cation [TTP]+ in combination with dianionic [FL]2− and monoanionic [FL]− fluorescein. Nanomaterials derived from these two compounds yielded contrasting colorimetric responses in neutral and acidic environments. Variations in fluorescence spectra as a function of pH were also observed. Examination of TEM and DLS data revealed significant expansion in the diameter of [TTP]2[FL] nanodroplets in acidic environments of variable pHs. A similar trend was also observed for [TTP][FL] nanoparticles. The pH dependent colorimetric and other optical properties of these nanomaterials are attributed to alterations in molecular orientations and stacking as suggested by measuring the absorption, fluorescence, and zeta potential. Since the pH is an important indicator for many diseases, including cancer, these nanosensors are considered to be potential candidates for biomedical applications.

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Fluorescent one-dimensional nanostructures from a group of uniform materials based on organic salts

Abstract: Herein we report the synthesis of a fluorescent organic salt through anion exchange and the subsequent fabrication of 1D-nanostructures via a facile templating method.

Cited by 37 publications

References 41 publications

Molecular modelling of ionic liquids in the ordered mesoporous carbon CMK-5

Molecular modelling of ionic liquids in the ordered mesoporous carbon CMK-5

Bis(trifluoromethylsulfonyl)imide‐based frozen ionic liquid for the hollow‐fiber solid‐phase microextraction of dichlorodiphenyltrichloroethane and its main metabolites

Ionic liquid-based fluorescein colorimetric pH nanosensors

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