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Special Issue "Photoresponsive Polymers"

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Photochemistry".

Deadline for manuscript submissions: closed (30 April 2017)

Special Issue Editors

Guest Editor
Prof. Dr. Haifeng Yu

Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
Website | E-Mail
Interests: photoresponsive liquid crystals and polymers; liquid crystal and micro/nano composite materials; light-triggered photonics and advanced materials; block copolymers and self-organization; photomechanical and energy-transferring materials; hologram and data-storage; multi-responsive polymers; soft matter; organogels; photodriven orangic materials
Guest Editor
Dr. Arri Priimägi

Department of Chemistry and Bioengineering, Tampere University of Technology, 541, 33101, Tampere, Finland
Website | E-Mail
Interests: functional soft materials; photonics; supramolecular self-assemblies
Guest Editor
Prof. Dr. Xiaogong Wang

Laboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
Website | E-Mail
Interests: azo polymers; photo-responsive; self-assembly; liquid crystal polymers

Special Issue Information

Dear Colleagues,

It is our great pleasure to invite you to submit an article for a high-profile Special Issue on “Photoresponsive Polymers” to be published in Molecules. This Special Issue aims to highlight research on light-induced chemical and physical processes of polymeric and polymer-based composite materials in both the bulk films and solutions. This includes, but is not limited to, new experimental and theoretical methodologies in highly interdisciplinary areas, such as photochemistry, photophysics, photocontrolled material processing and applications. Reviews, research articles and perspectives from experts in the field are equally welcome.

Prof. Dr. Haifeng Yu
Dr. Arri Priimägi
Prof. Dr. Xiaogong Wang
Guest Editor

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. Molecules 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 1800 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

  • photoresponsive polymers and composites
  • photoalignment in polymer materials
  • light-driven soft matters
  • light-controllable nanoassemblies
  • applications of photoresponsive materials
  • photo patterning
  • photomechanical materials
  • photodynamic materials
  • light-responsive materials in solution
  • photoactive molecular materials
  • photoresponsive supramolecules
  • light-active block copolymer and self-assembly
  • holographic recording
  • photonic materials

Published Papers (2 papers)

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Research

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Open AccessArticle Acceptor Side-Chain Effects on the Excited State Dynamics of Two-Dimensional-Like Conjugated Copolymers in Solution
Molecules 2017, 22(9), 1398; doi:10.3390/molecules22091398
Received: 14 June 2017 / Accepted: 18 August 2017 / Published: 25 August 2017
PDF Full-text (3028 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Excited state dynamics of two-dimensional-like conjugated copolymers PFDCN and PFSDCN based on alternating fluorene and triphenylamine main chains and malononitrile pendant acceptor groups with thiophene as π-bridge, have been investigated by using transient absorption spectroscopy. There is an additional conjugated –C=C– bond in
[...] Read more.
Excited state dynamics of two-dimensional-like conjugated copolymers PFDCN and PFSDCN based on alternating fluorene and triphenylamine main chains and malononitrile pendant acceptor groups with thiophene as π-bridge, have been investigated by using transient absorption spectroscopy. There is an additional conjugated –C=C– bond in PFDCN, which distinguishes it from PFSDCN. The lowest energy absorption band of each copolymer absorption spectrum is attributed to the π−π* transition with intramolecular charge-transfer, which has a lower fluorescence contribution than those of higher energy absorption bands. The optical excitation of either PFDCN or PFSDCN solution generates polaron pairs that then self-localize and evolve to a bound singlet exciton within a few picoseconds. Due to the additional conjugated –C=C– bond in the acceptor side-chain, PFDCN has a stronger intramolecular charge-transfer characteristic compared with PFSDCN, therefore exhibiting a longer self-localization time (7 ps vs. 3 ps for PFSDCN) and a shorter fluorescence lifetime (1.48 ns vs. 1.60 ns for PFSDCN). Full article
(This article belongs to the Special Issue Photoresponsive Polymers)
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Review

Jump to: Research

Open AccessReview Motion of Adsorbed Nano-Particles on Azobenzene Containing Polymer Films
Molecules 2016, 21(12), 1663; doi:10.3390/molecules21121663
Received: 23 September 2016 / Revised: 25 October 2016 / Accepted: 18 November 2016 / Published: 3 December 2016
PDF Full-text (3619 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
We demonstrate in situ recorded motion of nano-objects adsorbed on a photosensitive polymer film. The motion is induced by a mass transport of the underlying photoresponsive polymer material occurring during irradiation with interference pattern. The polymer film contains azobenzene molecules that undergo reversible
[...] Read more.
We demonstrate in situ recorded motion of nano-objects adsorbed on a photosensitive polymer film. The motion is induced by a mass transport of the underlying photoresponsive polymer material occurring during irradiation with interference pattern. The polymer film contains azobenzene molecules that undergo reversible photoisomerization reaction from trans- to cis-conformation. Through a multi-scale chain of physico-chemical processes, this finally results in the macro-deformations of the film due to the changing elastic properties of polymer. The topographical deformation of the polymer surface is sensitive to a local distribution of the electrical field vector that allows for the generation of dynamic changes in the surface topography during irradiation with different light interference patterns. Polymer film deformation together with the motion of the adsorbed nano-particles are recorded using a homemade set-up combining an optical part for the generation of interference patterns and an atomic force microscope for acquiring the surface deformation. The particles undergo either translational or rotational motion. The direction of particle motion is towards the topography minima and opposite to the mass transport within the polymer film. The ability to relocate particles by photo-induced dynamic topography fluctuation offers a way for a non-contact simultaneous manipulation of a large number of adsorbed particles just in air at ambient conditions. Full article
(This article belongs to the Special Issue Photoresponsive Polymers)
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