Electrospun Nanofibrous Film Doped with a Conjugated Polymer for DNT Fluorescence Sensor

Long, Yuanyuan; Chen, Haibo; Yang, Yuehai; Wang, Huaming; Yang, Yufei; Li, Na; Li, Kèan; Pei, Jian; Liu, Feng

doi:10.1021/ma900756w

Cited by 155 publications

(105 citation statements)

References 34 publications

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“…Due to the difference of the charge between the emission sites and the nitrate ions, the most possible interactions between PVP and nitrate ions would be electrostatic interactions. Similar interactions have been proposed for the interactions between nitrates and polypyrrole [22], nitro-containing compounds with polymers [11,26,27]. In the presence of the same concentration of nitrate ions, especially at high concentrations, it was obviously observed that the C=O sites were more quenched than the N-C sites.…”

Section: Quenching Testssupporting

confidence: 72%

Polyvinylpyrrolidone as a New Fluorescent Sensor for Nitrate Ion

Ing¹,

Sundari²,

Lintang³

et al. 2016

MJAS

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In this study, non-conjugated polyvinylpyrrolidone(PVP) was investigated for the first time as the potential polymeric material to sense nitrate ions by fluorescence spectroscopy. The PVP was diluted into various concentrations (3-10%) and they were used to sense the nitrate ions in different concentrations (0.1-100 mM). The PVP showed two excitation peaks at 285 and 330 nm due to the presence of C=O and N-C groups, respectively. One strong emission at 400 or 408 nm was observed with the excitation at 285 or 330 nm. The higher value of quenching constant at excitation wavelength of 285 nm indicated that C=O site was more favored for NO 3 -ions sensing than the N-C site. The PVP 7% gave the highest quenching constant; where the K SV value was 9.89 × 10 -3 mM -1 and 2.44 × 10 -3 mM -1 for excitation at 285 and 330 nm, respectively. The sensing capability was evaluated in the presence of interference ions (SO 4 2-, HCO 3 -, Cl -, and OH -). It was observed that the interference ions interacted strongly with the C=O, but weakly with the N-C. Therefore, in the presence of the interference ions, the PVP would be a potential fluorescent sensor when it is excited at 330 nm.Keywords: polyvinylpyrrolidone; fluorescent sensor; nitrate ions; quenching Abstrak Dalam kajian ini, polivinilpirolidon (PVP) yang bersifat bukan konjugat dikaji untuk kali pertama sebagai bahan polimer yang berpotensi untuk mengesan ion nitrat dengan spektroskopi pendaflour. PVP dicairkan kepada kepekatan yang berlainan (3-10%) dan digunakan untuk mengesan ion nitrat dalam kepekatan yang berbeza (0.1-100 mM). PVP menunjukkan dua puncak pengujaan pada 285 and 330 nm dengan kewujudan C=O dan N-C masing-masing. Satu puncak pemancaran yang tinggi pada 400 atau 408 nm diperolehi dengan pengujaan pada 285 atau 330 nm. Pemalar pelidap kejutan dengan nilai yang lebih tinggi pada puncak pengujaan 285 nm menunjukkan bahawa tapak C=O lebih cenderung untuk mengesan ion NO 3 -daripada tapak N-C. PVP 7% memberi pemalar pelidap kejutan yang paling tinggi, dengan nilai K SV 9.89 × 10 -3 mM -1 and 2.44 × 10 -3 mM -1 untuk puncak pengujaan pada 285 dan 330 nm masing-masing. Kemampuan pengesanan dinilai dengan kehadiran ion gangguan (SO 4 2-, HCO 3 -, OH -, and Cl -). Hasil kajian menunjukkan bahawa ion gangguan berinteraksi kuat dengan C=O, tetapi lemah dengan N-C. Oleh itu, dengan kehadiran ion gangguan, PVP berpotensi menjadi pendafluor sensor pada tapak pengujaan 330 nm.Kata kunci: polivinilpirolidon; pengesan pendaflour, ion nitrat, pelidap kejutan

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Section: Quenching Testssupporting

confidence: 72%

Polyvinylpyrrolidone as a New Fluorescent Sensor for Nitrate Ion

Ing¹,

Sundari²,

Lintang³

et al. 2016

MJAS

View full text Add to dashboard Cite

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“…Polymers can be intrinsically fluorescent due to an extended conjugated system Kang et al, 2007;Long et al, 2009;Samitsu et al, 2009;Xin et al, 2009;Zhang et al, 2007;Zhao et al, 2007;Zhu et al, 2009). A good example is that of poly(phenylene vinylene) (PPV) derivatives, which emit from blue to yellow-green.…”

Section: Polymer-based Nanofibersmentioning

confidence: 99%

Organic Fluorescent Nanofibers and Sub-Micrometer Rods

Fery–Forgues¹,

Fournier‐Noël²

2010

Nanofibers

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“…Nitro-substituted groups such as 2,4-dinitrotoluene (DNT) and 2,4,6-trinitrotoluene (TNT) act as effective quenching analytes. Through the use of novel fluorophores [325] and conjugated polymers [326], rapid response dynamics of fluorescence quenched electrospun optical sensors can be utilized for detection of explosive compounds. Xue et al recently demonstrated an explosives detector based on a novel fluorophore that had a more favorable donor-acceptor interaction between itself and DNT compared with previous fluorophores.…”

Section: Other Applications Of Electrospun Fibers In Photonicsmentioning

confidence: 99%

Electrospinning for nano- to mesoscale photonic structures

et al. 2016

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Abstract:The fabrication of photonic and electronic structures and devices has directed the manufacturing industry for the last 50 years. Currently, the majority of small-scale photonic devices are created by traditional microfabrication techniques that create features by processes such as lithography and electron or ion beam direct writing. Microfabrication techniques are often expensive and slow. In contrast, the use of electrospinning (ES) in the fabrication of microand nano-scale devices for the manipulation of photons and electrons provides a relatively simple and economic viable alternative. ES involves the delivery of a polymer solution to a capillary held at a high voltage relative to the fiber deposition surface. Electrostatic force developed between the collection plate and the polymer promotes fiber deposition onto the collection plate. Issues with ES fabrication exist primarily due to an instability region that exists between the capillary and collection plate and is characterized by chaotic motion of the depositing polymer fiber. Material limitations to ES also exist; not all polymers of interest are amenable to the ES process due to process dependencies on molecular weight and chain entanglement or incompatibility with other polymers and overall process compatibility. Passive and active electronic and photonic fibers fabricated through the ES have great potential for use in light generation and collection in optical and electronic structures/ devices. ES produces fiber devices that can be combined with inorganic, metallic, biological, or organic materials for novel device design. Synergistic material selection and postprocessing techniques are also utilized for broad-ranging applications of organic nanofibers that span from biological to electronic, photovoltaic, or photonic. As the ability to electrospin optically and/or electronically active materials in a controlled manner continues to improve, the complexity and diversity of devices fabricated from this process can be expected to grow rapidly and provide an alternative to traditional resource-intensive fabrication techniques.

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Electrospun Nanofibrous Film Doped with a Conjugated Polymer for DNT Fluorescence Sensor

Cited by 155 publications

References 34 publications

Polyvinylpyrrolidone as a New Fluorescent Sensor for Nitrate Ion

Polyvinylpyrrolidone as a New Fluorescent Sensor for Nitrate Ion

Organic Fluorescent Nanofibers and Sub-Micrometer Rods

Electrospinning for nano- to mesoscale photonic structures

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