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Molecules
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New Studies of Conjugated Compounds
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New Studies of Conjugated Compounds

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

Deadline for manuscript submissions: closed (30 May 2020) | Viewed by 12594

Special Issue Editor

Prof. Dr. Yuming Zhao

E-Mail Website
Guest Editor
Department of Chemistry, Memorial University of Newfoundland, St. John's, NL A1B 3X7, Canada
Interests: conjugated polymers, carbon nanotubes, fullerenes, tetrathiafulvalenes, organic optoelectronics, supramolecular chemistry

Special Issue Information

Dear Colleagues,

Conjugated organic molecules are important molecular building blocks in advanced nanoscale materials and devices. Their application can be widely found in single-molecule devices (e.g., chemo-/biosensors, light-emitters, molecular switches, molecular machines), as well as in much larger macromolecular and supramolecular systems (molecular wires, 2D and 3D conjugated polymers, molecular frameworks, etc.). This Special Issue aims to highlight recent new research directions in this field. The scope of papers encompasses innovative molecular design and synthesis, advanced characterizations, theoretical modeling, and applications in electronic, optical, magnetic, biolabeling, and bioimaging materials and devices.
Communications, full papers, and reviews on the abovementioned topics are particularly welcome.

Prof. Yuming Zhao
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 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. Molecules 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

  • Conjugated molecules
  • Organic synthesis
  • Computational chemistry
  • Organic chromophores
  • Fluorescence sensors
  • Electroluminescent materials
  • Redox-active compounds
  • Organic semiconductors
  • Fullerenes
  • Nanographenes
  • Covalent organic frameworks

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

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Editorial

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2 pages, 167 KiB  
Editorial
Special Issue “New Studies of Conjugated Compounds”
by Yuming Zhao
Molecules 2020, 25(14), 3220; https://doi.org/10.3390/molecules25143220 - 15 Jul 2020
Cited by 2 | Viewed by 1703
Abstract
For a long time, π-conjugated materials have played a central role in the fields of modern materials chemistry and nanotechnology [...] Full article
(This article belongs to the Special Issue New Studies of Conjugated Compounds)

Research

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14 pages, 2424 KiB  
Article
Donor-Acceptor Substituted Benzo-, Naphtho- and Phenanthro-Fused Norbornadienes
by Mads Mansø, Lorette Fernandez, Zhihang Wang, Kasper Moth-Poulsen and Mogens Brøndsted Nielsen
Molecules 2020, 25(2), 322; https://doi.org/10.3390/molecules25020322 - 13 Jan 2020
Cited by 22 | Viewed by 5038
Abstract
The photochromic norbornadiene/quadricyclane (NBD/QC) couple has found interest as a molecular solar thermal energy (MOST) system for storage of solar energy. To increase the energy difference between the two isomers, we present here the synthesis of a selection of benzo-fused NBD derivatives that [...] Read more.
The photochromic norbornadiene/quadricyclane (NBD/QC) couple has found interest as a molecular solar thermal energy (MOST) system for storage of solar energy. To increase the energy difference between the two isomers, we present here the synthesis of a selection of benzo-fused NBD derivatives that contain an aromatic unit, benzene, naphthalene or phenanthrene, fused to one of the NBD double bonds, while the carbon atoms of the other double bond are functionalized with donor and acceptor groups. The synthesis protocols involve functionalization of benzo-fused NBDs with bromo/chloro substituents followed by a subjection of these intermediates to a cyanation reaction (introducing a cyano acceptor group) followed by a Sonogashira coupling (introducing an arylethynyl donor group, -C≡CC6H4NMe2 or -C≡CC6H4OMe). While the derivatives have good absorption properties in the visible region (redshifted relative to parent system) in the context of MOST applications, they lack the ability to undergo NBD-to-QC photoisomerization, even in the presence of a photosensitizer. It seems that loss of aromaticity of the fused aromatics is too significant to allow photoisomerization to occur. The concept of destroying aromaticity of a neighboring moiety as a way to enhance the energy density of the NBD/QC couple thus needs further structural modifications, in the quest for optimum MOST systems. Full article
(This article belongs to the Special Issue New Studies of Conjugated Compounds)
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Review

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21 pages, 3559 KiB  
Review
Recent Advances in Conjugated Graft Copolymers: Approaches and Applications
by Tomasz Jarosz, Karolina Gebka and Agnieszka Stolarczyk
Molecules 2019, 24(16), 3019; https://doi.org/10.3390/molecules24163019 - 20 Aug 2019
Cited by 12 | Viewed by 4992
Abstract
The main goal of this mini review is to summarise the most recent progress in the field of conjugated graft copolymers featuring conjugation across the main chain, across side chains or across both. The main approaches to the synthesis of conjugated graft copolymers [...] Read more.
The main goal of this mini review is to summarise the most recent progress in the field of conjugated graft copolymers featuring conjugation across the main chain, across side chains or across both. The main approaches to the synthesis of conjugated graft copolymers are highlighted, and the various trends in the development of new copolymer materials and the intended directions of their applications are explored. Full article
(This article belongs to the Special Issue New Studies of Conjugated Compounds)
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