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Special Issue "Functional Conjugated Polymers for Bioimaging and Biosensing"

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: closed (30 September 2017)

Special Issue Editors

Guest Editor
Prof. Anitha Ethirajan

Institute for Materials Research (IMO), UHasselt (Hasselt University), Belgium
Website | E-Mail
Interests: functional nanoparticles; (bio)chemical sensors; bioimaging; theranostics; drug delivery; nanomedicine
Guest Editor
Prof. Wouter Maes

Institute for Materials Research (IMO), UHasselt (Hasselt University), Belgium
Website | E-Mail
Interests: conjugated polymers; polymer synthesis; porphyrinoids; organic electronics; bioimaging; theranostics

Special Issue Information

Dear Colleagues,

Conjugated polymers have emerged as a fascinating class of materials because of their attractive optical and electronic properties. Intense synthetic efforts over the years have paved the way for the development of functional conjugated polymers with tunable chemical structures, solubilities, bandgaps, and energy levels toward the desired optical, electronic as well as processing features. In parallel, remarkable advances in the understanding of structure–property relationships have led to significant progress in the employment of these materials as front-runners in several advanced technological applications. Because of the multitude of desirable features—low cost, ease of processing by printing techniques, thin film flexibility and superior optoelectronic properties—these materials have been invaluable in high-performance electronic devices ranging from organic photovoltaics (OPVs), light-emitting diodes (OLEDs), field-effect transistors (OFETs), and photodetectors (OPDs) to (biochemical) sensors and next-generation skin-inspired wearable electronic applications.

The use of conjugated polymers in biosensing applications is very promising as many preferred features of these materials for use in optoelectronic devices are also very relevant and useful in the design and development of biosensors/bioelectronic devices. Apart from their use in optoelectronic devices, these materials are highly promising for bioimaging because of their excellent optical properties and appealing biocompatibility. Fluorescent probes based on conjugated polymers have several salient features that render them ideal for bioimaging. For instance, conjugated polymers with fluorescence in the near infrared offer an interesting optical window for cellular and in vivo bioimaging with low absorption from the background and biological autofluorescence. In general, fluorescent probes in the form of self-assembled structures, nanoparticles, encapsulated moieties, etc., have gained a lot of interest and significant advances have already been made.

As the fields of both biosensing and bioimaging that employ functional conjugated polymers are rapidly advancing, it is our pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are welcome. The main theme can either be the application part or the conjugated polymer synthesis and characterization part, or (ideally) the manuscript can cover both aspects simultaneously.

Prof. Anitha Ethirajan
Prof. Wouter Maes
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • bioimaging
  • (bio)chemical sensors
  • conjugated polymer synthesis and functionalization
  • fluorescent probes
  • theranostics
  • nanoparticles/self-assembled structures
  • optical properties
  • electronic properties

Published Papers (1 paper)

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Research

Open AccessArticle Construction and Characterization of a Chitosan-Immobilized-Enzyme and β-Cyclodextrin-Included-Ferrocene-Based Electrochemical Biosensor for H2O2 Detection
Materials 2017, 10(8), 868; doi:10.3390/ma10080868
Received: 3 July 2017 / Revised: 18 July 2017 / Accepted: 25 July 2017 / Published: 28 July 2017
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Abstract
An electrochemical detection biosensor was prepared with the chitosan-immobilized-enzyme (CTS-CAT) and β-cyclodextrin-included-ferrocene (β-CD-FE) complex for the determination of H2O2. Ferrocene (FE) was included in β-cyclodextrin (β-CD) to increase its stability. The structure of the β-CD-FE was characterized. The inclusion
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An electrochemical detection biosensor was prepared with the chitosan-immobilized-enzyme (CTS-CAT) and β-cyclodextrin-included-ferrocene (β-CD-FE) complex for the determination of H2O2. Ferrocene (FE) was included in β-cyclodextrin (β-CD) to increase its stability. The structure of the β-CD-FE was characterized. The inclusion amount, inclusion rate, and electrochemical properties of inclusion complexes were determined to optimize the reaction conditions for the inclusion. CTS-CAT was prepared by a step-by-step immobilization method, which overcame the disadvantages of the conventional preparation methods. The immobilization conditions were optimized to obtain the desired enzyme activity. CTS-CAT/β-CD-FE composite electrodes were prepared by compositing the CTS-CAT with the β-CD-FE complex on a glassy carbon electrode and used for the electrochemical detection of H2O2. It was found that the CTS-CAT could produce a strong reduction peak current in response to H2O2 and the β-CD-FE could amplify the current signal. The peak current exhibited a linear relationship with the H2O2 concentration in the range of 1.0 × 10−7–6.0 × 10−3 mol/L. Our work provided a novel method for the construction of electrochemical biosensors with a fast response, good stability, high sensitivity, and a wide linear response range based on the composite of chitosan and cyclodextrin. Full article
(This article belongs to the Special Issue Functional Conjugated Polymers for Bioimaging and Biosensing)
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