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Special Issue "ECSOC-26"

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

Deadline for manuscript submissions: 15 July 2023 | Viewed by 582

Special Issue Editor

Dr. Julio A. Seijas Vázquez
E-Mail Website
Guest Editor
Departamento de Química Orgánica, Universidad de Santiago de Compostela, Facultad de Ciencias-Campus de Lugo, Alfonso X el Sabio, 27002 Lugo, Spain
Interests: synthesis of compounds with biologic activity; synthesis of compounds with interest for agro-food field; solation, structural determination and synthesis of natural products; microwave organic reactions enhancement
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electronic conferences on synthetic organic chemistry (ECSOC) are a series of conferences carried out through the Internet since 1997, an original initiative by MDPI, and later consolidated with the contribution of the University of Santiago de Compostela (Spain). At present, it constitutes the first and oldest electronic conference in the world. It maintains its character of free participation, with contributions considered including preliminary reports on edge achievements, and registration as a distinctive standard of the worldwide web open access character.

The conference covers different sections of organic synthesis:

  •     General organic synthesis;
  •     Bioorganic, medicinal, and natural products chemistry;
  •     Microwave-assisted synthesis;
  •     Polymer and supramolecular chemistry;
  •     Computational chemistry.

For more information on the 26th International Electronic Conference on Synthetic Organic Chemistry (ECSOC-26), please go to: https://sciforum.net/event/ecsoc-26

Dr. Julio A. Seijas Vázquez
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 2300 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.

Published Papers (1 paper)

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Research

Article
Piezo-Responsive Hydrogen-Bonded Frameworks Based on Vanillin-Barbiturate Conjugates
Molecules 2022, 27(17), 5659; https://doi.org/10.3390/molecules27175659 - 02 Sep 2022
Viewed by 365
Abstract
A concept of piezo-responsive hydrogen-bonded π-π-stacked organic frameworks made from Knoevenagel-condensed vanillin–barbiturate conjugates was proposed. Replacement of the substituent at the ether oxygen atom of the vanillin moiety from methyl (compound 3a) to ethyl (compound 3b) changed the appearance of the [...] Read more.
A concept of piezo-responsive hydrogen-bonded π-π-stacked organic frameworks made from Knoevenagel-condensed vanillin–barbiturate conjugates was proposed. Replacement of the substituent at the ether oxygen atom of the vanillin moiety from methyl (compound 3a) to ethyl (compound 3b) changed the appearance of the products from rigid rods to porous structures according to optical microscopy and scanning electron microscopy (SEM), and led to a decrease in the degree of crystallinity of corresponding powders according to X-ray diffractometry (XRD). Quantum chemical calculations of possible dimer models of vanillin–barbiturate conjugates using density functional theory (DFT) revealed that π-π stacking between aryl rings of the vanillin moiety stabilized the dimer to a greater extent than hydrogen bonding between carbonyl oxygen atoms and amide hydrogen atoms. According to piezoresponse force microscopy (PFM), there was a notable decrease in the vertical piezo-coefficient upon transition from rigid rods of compound 3a to irregular-shaped aggregates of compound 3b (average values of d33 coefficient corresponded to 2.74 ± 0.54 pm/V and 0.57 ± 0.11 pm/V), which is comparable to that of lithium niobate (d33 coefficient was 7 pm/V). Full article
(This article belongs to the Special Issue ECSOC-26)
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