Next Article in Journal
Semisolid Microstructural Evolution during Partial Remelting of a Bulk Alloy Prepared by Cold Pressing of the Ti-Al-2024Al Powder Mixture
Previous Article in Journal
Controlled Photocatalytic Synthesis of Core–Shell SiC/Polyaniline Hybrid Nanostructures
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessFeature PaperArticle
Materials 2016, 9(3), 202; doi:10.3390/ma9030202

Study of Polydiacetylene-Poly (Ethylene Oxide) Electrospun Fibers Used as Biosensors

1
Department of Design and Merchandising, Colorado State University, Fort Collins, CO 80523, USA
2
Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
3
School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
4
Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Dusan Losic
Received: 31 January 2016 / Revised: 5 March 2016 / Accepted: 7 March 2016 / Published: 16 March 2016
(This article belongs to the Section Advanced Composites)
View Full-Text   |   Download PDF [3460 KB, uploaded 16 March 2016]   |  

Abstract

Polydiacetylene (PDA) is an attractive conjugated material for use in biosensors due to its unique characteristic of undergoing a blue-to-red color change in response to external stimuli. 10,12-Pentacosadiynoic acid (PCDA) and poly (ethylene oxide) (PEO) were used in this study to develop fiber composites via an electrospinning method at various mass ratios of PEO to PCDA, solution concentrations, and injection speeds. The PEO-PDA fibers in blue phase were obtained via photo-polymerization upon UV-light irritation. High mass ratios of PEO to PCDA, low polymer concentrations of spinning solution, and low injection speeds promoted fine fibers with small diameters and smooth surfaces. The colorimetric transition of the fibers was investigated when the fibers were heated at temperatures ranging from 25 °C to 120 °C. A color switch from blue to red in the fibers was observed when the fibers were heated at temperatures greater than 60 °C. The color transition was more sensitive in the fibers made with a low mass ratio of PEO to PCDA due to high fraction of PDA in the fibers. The large diameter fibers also promoted the color switch due to high reflectance area in the fibers. All of the fibers were analyzed using Fourier transform infrared spectroscopy (FT-IR) and differential scanning calorimetry (DSC) and compared before and after the color change occurred. The colorimetric transitional mechanism is proposed to occur due to conformational changes in the PDA macromolecules. View Full-Text
Keywords: polydiacetylene; electrospun fiber; biosensor; color transformation polydiacetylene; electrospun fiber; biosensor; color transformation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Alam, A.K.M.M.; Yapor, J.P.; Reynolds, M.M.; Li, Y.V. Study of Polydiacetylene-Poly (Ethylene Oxide) Electrospun Fibers Used as Biosensors. Materials 2016, 9, 202.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top