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Polymers
Special Issues
Photoactive Polymeric Materials
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Photoactive Polymeric Materials

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Analysis and Characterization".

Deadline for manuscript submissions: closed (20 September 2022) | Viewed by 5698

Special Issue Editors

Dr. Vanda Isabel Roldão Canelas Vaz Serra

E-Mail Website
Guest Editor
Centro de Química Estrutural, Instituto Superior Técnico, Lisbon, Portugal
Interests: photoactive polymeric materials; supramolecular chemistry; smart soft materials; colloids; controlled release systems; biomedical applications; tetrapyrrolic dyes; nanoparticles; spectroscopy; fluorescence lifetime imaging microscopy
Dr. João M. M. Rodrigues

E-Mail Website
Guest Editor
Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
Interests: organic chemistry; supramolecular chemistry; biomaterials; drug delivery; materials chemistry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Interactions of light with matter are essential for life as we know it. Inspired by light-driven natural phenomena, scientists have developed a wide range of photoactive materials to be used not only in fundamental research but also in a wide range of technological applications.

The diversity of molecular functionalities of polymers, and their attractive properties and macromolecular structures, encourage the design and synthesis of different classes of polymeric materials with light-triggered and improved performances.

Photoactive polymeric materials attract great attention, owing to their emerging applications in solar energy conversion, photonics, optoelectronics,  biomedical applications, drug delivery, wound dressing, tissues engineering, light driven degradation of water and gas-phase pollutants, biosensing, microreactors, and other growing fields. Still, some challenges remain regarding their stability, biocompatibility, biodegradability, and cost efficiency.

This Special Issue aims to cover the most recent and engaging topics on photoactive polymers/polymeric materials with focus on their preparation, characterization, properties, and applications. Submissions in the form of full-length articles, communications, and reviews are invited.

Dr. Vanda Isabel Roldão Canelas Vaz Serra
Dr. João M. M. Rodrigues
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 submissions that pass pre-check are 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. Polymers is an international peer-reviewed open access semimonthly 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 2700 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

  • Photoactive polymers
  • Photoactive polymeric (hybrid) materials
  • Synthesis
  • Dyes
  • Light-driven processes
  • Photochemistry
  • Optical characterization
  • Physicochemical properties
  • Plasmonics

Published Papers (2 papers)

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Research

11 pages, 1407 KiB  
Article
Aerosol Jet Printing of 3D Pillar Arrays from Photopolymer Ink
by Vitor Vlnieska, Evgeniia Gilshtein, Danays Kunka, Jakob Heier and Yaroslav E. Romanyuk
Polymers 2022, 14(16), 3411; https://doi.org/10.3390/polym14163411 - 20 Aug 2022
Cited by 11 | Viewed by 2561
Abstract
An aerosol jet printing (AJP) printing head built on top of precise motion systems can provide positioning deviation down to 3 μm, printing areas as large as 20 cm × 20 cm × 30 cm, and five-axis freedom of movement. Typical uses of [...] Read more.
An aerosol jet printing (AJP) printing head built on top of precise motion systems can provide positioning deviation down to 3 μm, printing areas as large as 20 cm × 20 cm × 30 cm, and five-axis freedom of movement. Typical uses of AJP are 2D printing on complex or flexible substrates, primarily for applications in printed electronics. Nearly all commercially available AJP inks for 2D printing are designed and optimized to reach desired electronic properties. In this work, we explore AJP for the 3D printing of free-standing pillar arrays. We utilize aryl epoxy photopolymer as ink coupled with a cross-linking “on the fly” technique. Pillar structures 550 μm in height and with a diameter of 50 μm were 3D printed. Pillar structures were characterized via scanning electron microscopy, where the morphology, number of printed layers and side effects of the AJP technique were investigated. Satellite droplets and over-spray seem to be unavoidable for structures smaller than 70 μm. Nevertheless, reactive ion etching (RIE) as a post-processing step can mitigate AJP side effects. AJP-RIE together with photopolymer-based ink can be promising for the 3D printing of microstructures, offering fast and maskless manufacturing without wet chemistry development and heat treatment post-processing. Full article
(This article belongs to the Special Issue Photoactive Polymeric Materials)
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14 pages, 3328 KiB  
Article
Preparation of Bis[(3-ethyl-3-methoxyoxetane)propyl]diphenylsilane and Investigation of Its Cationic UV-Curing Material Properties
by Yuansheng Liu, Biwu Huang, Wenbin Zhou, Weiqing Chen and Yang Wu
Polymers 2021, 13(15), 2573; https://doi.org/10.3390/polym13152573 - 2 Aug 2021
Cited by 1 | Viewed by 2115
Abstract
Precusor EHO(3-ethyl-3-hydroxymethyloxetane) was synthesized with diethyl carbonate and trihydroxypropane as the main raw materials. Intermediate AllyEHO(3-ethyl-3-allylmethoxyoxetane) was synthesized with 3-ethyl-3-hydroxymethyloxetane and allyl bromide as the main raw materials. Prepolymer bis[(3-ethyl-3-methoxyoxetane)propyl]diphenylsilane was synthesized with 3-ethyl-3-methoxyoxetane)propyl and diphenylsilane. Photoinitiator triarylsulfonium hexafluoroantimonate of 3% was added [...] Read more.
Precusor EHO(3-ethyl-3-hydroxymethyloxetane) was synthesized with diethyl carbonate and trihydroxypropane as the main raw materials. Intermediate AllyEHO(3-ethyl-3-allylmethoxyoxetane) was synthesized with 3-ethyl-3-hydroxymethyloxetane and allyl bromide as the main raw materials. Prepolymer bis[(3-ethyl-3-methoxyoxetane)propyl]diphenylsilane was synthesized with 3-ethyl-3-methoxyoxetane)propyl and diphenylsilane. Photoinitiator triarylsulfonium hexafluoroantimonate of 3% was added to the prepolymer, and a novel kind of the photosensitive resin was prepared. They were analyzed and characterized with FTIR and 1H-NMR. Photo-DSC examination revealed that the bis[(3-ethyl-3-methoxyoxetane)propyl]diphenylsilane has great photosensitivity. The thermal properties and mechanical properties of the photosensitive resin were examined by TGA and a microcomputer-controlled universal material testing machine, with thermal stabilities of up to 446 °C. The tensile strength was 75.5 MPa and the bending strength was 49.5 MPa. The light transmittance remained above 98%. Full article
(This article belongs to the Special Issue Photoactive Polymeric Materials)
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