Synthesis, characterization, and self‐assembly of cationic coumarin side‐chain polymer

Zhang, Chuanzhi; Liang, Ruiyuan; Jiang, Chunxia; Chen, Deben; Zhong, Aihua

doi:10.1002/app.27782

Cited by 9 publications

(6 citation statements)

References 29 publications

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“…Coumarin ( 2H -chromen-2-one), a benzo-α-pyrone, consists of fused pyrone and benzene rings with a pyrone carbonyl group at position 2, and is well known as fluorescent material because of its high photostability and photoluminescence efficiency [44] – [46] . Coumarins are an important group of organic compounds that are used as additives to food and cosmetics, optical brightening agents, and dispersed fluorescent and laser dyes [47] , [48] .…”

Section: Introductionmentioning

confidence: 99%

Development of a Novel Fluorophore for Real-Time Biomonitoring System

et al. 2012

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Rapid in-field diagnosis is very important to prevent the outbreak of various infectious and contagious diseases. Highly sensitive and quantitative detection of diseases can be performed using fluorescent immunochemical assay with specific antigen-antibody binding and a good quality fluorophore. This can lead to the development of a small, portable, quantitative biosensor to transmit diagnostic results to a control center in order to systematically prevent disease outbreaks. In this study, we developed a novel fluorophore, coumarin-derived dendrimer, with high emission intensity, strong signal brightness, and high photostability. It is easily coupled with biomolecules and emits strong and stable fluorescence at 590 nm with excitation at 455 nm. Application to fluorescent immunochromatographic test (FICT) showed that the novel coumarin-derived dendrimer bioconjugate could detect antigens at amount as low as 0.1 ng. The clinical results and the spectral characteristics of the novel coumarin-derived dendrimer open, for the first time, the possibility of developing a cost/energy efficient LED-based portable quantitative biosensor for point-of-care (POC) disease diagnosis, which can permit real time monitoring (U-healthcare system) by a disease control center.

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Section: Introductionmentioning

confidence: 99%

Development of a Novel Fluorophore for Real-Time Biomonitoring System

et al. 2012

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“…Synthesis of positively charged C-CPA with different DM contents: By controlling the contents of DM in the methyl methacrylate copolymers (CPA), a series of CPA were synthesized by the reported method 21 . 3-(2-Benzothiazolyl)-6-chloromethyl-coumarin was synthesized with 2-hydroxybenzaldehyde, 2-aminothiophenol and malononitrile.…”

Section: Methodsmentioning

confidence: 99%

Study on the Fluorescence Characteristics of CdTe and Charged Coumarin-Contained Polymer Blending System

Wang¹,

Li²,

Chen³

et al. 2013

Asian J. Chem.

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In this paper, a series of positively charged coumarin-contained polymer (C-CPA) were synthesized and a negatively charged CdTe quantum dots (CdTe QDs) protected by thioglycolic acid (TGA) was prepared. C-CPA and CdTe QDs were blended in mixed solution to build a blending system. The photoluminescent properties of both C-CPA and CdTe QDs were studied and the influence of the solvent on the size of CdTe QDs was studied as well. By controlling the proportions of the two mixtures, some regularly phenomena were found. As the proportion of CdTe QDs rising in the mixture, the fluorescence intensity of C-CPA declined; as the proportion of C-CPA rising, the fluorescence intensity of CdTe QDs rose significantly. These phenomena followed the fluorescence resonance energy transfer theory (FRET). The electrostatic force between the two mixtures caused the interaction between them. The study confirmed that an energy donor-acceptor pair was formed in this blending system.

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“…Polymer ultrathin films can be immobilized to different surfaces by using numerous techniques, such as Langmuir-Blodgett technique [4], spin coating [5], self-assembly [6], and electropolymerization [7,8]. There are some problems in the modification of surfaces: poor contact between substrate and polymer film, deficiency in the conjugation of immobilized polymer, and controlling the molecular weight of the conducting polymer [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Surface‐Confined Electropolymerization of Methylene Blue on Gold Electrodes

Dağcı

Alanyalıoğlu

2010

Electroanalysis

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We report on the electrochemical behaviour and electropolymerization of self-assembled monolayers (SAMs) of methylene blue (MB) on gold electrodes. The SAMs of MB on gold electrodes were prepared by immersing the substrates into a solution of 1.0 mM MB in absolute ethanol for different times at room temperature. Cyclic voltammetry experiments exhibited that reductive desorption of MB monolayer takes place at three different potentials on polycrystalline gold electrodes, while reductive desorption of MB monolayer consists of only one peak on single crystal Au(111) substrates. Calculated charge densities for different immersion times indicated that optimal immersion time for self-assembly of MB is 96 h. Electropolymerization of SAMs of MB on gold electrode was achieved by applying 0.95 V for 1 s in 0.1 M borate buffer solution (pH: 9.0). It was observed that poly(MB) monolayers are highly stable in acidic media. ATR-FTIR and UV-vis spectra exhibited differences between monomer and polymer monolayers, which are attributed to surface-confined electropolymerization. STM image of poly(MB) monolayer on Au(111) substrate revealed a surface that is covered by well-ordered, collateral nanowires with an average size of 3 nm.

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Synthesis, characterization, and self‐assembly of cationic coumarin side‐chain polymer

Cited by 9 publications

References 29 publications

Development of a Novel Fluorophore for Real-Time Biomonitoring System

Development of a Novel Fluorophore for Real-Time Biomonitoring System

Study on the Fluorescence Characteristics of CdTe and Charged Coumarin-Contained Polymer Blending System

Surface‐Confined Electropolymerization of Methylene Blue on Gold Electrodes

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