Special Issue "Fluorescent Complexes"

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystal Engineering".

Deadline for manuscript submissions: 15 April 2020.

Special Issue Editor

Prof. Dr. Jesús Sanmartín-Matalobos
E-Mail Website
Guest Editor
Inorganic Chemistry Department, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
Interests: chirality in coordination compounds; molecular magnetism; supramolecular chemistry; fluorescent complexes; X-ray diffraction

Special Issue Information

Dear Colleagues,

Fluorescence spectrometry is a fast, simple and inexpensive method for sample detection and quantification based on enhancement/quenching of its fluorescent intensity. Sensitivity, specificity, wide concentration range and accurate results are remarkable advantages of fluorescence-based methods. There are numerous organic fluorophores available, but most of them, as is the case of fluorescein and rhodamine, have fluorescence lifetimes of less than 10 nanoseconds. The discovery of metal complexes with long lifetimes as well as a high chemical and photochemical stability under physiological conditions has attracted a lot of attention to investigate their light emission properties. Since the source of complexes fluorescence is the metal-to-ligand charge-transfer state, a careful selection of metals and ligands can give rise to complexes with favourable light emission properties. Specific applications in analytical, biological and medical research boost investigation on the development of new metal complexes-based probes.

We invite researchers to contribute to this Special Issue on fluorescent complexes, which is intended to serve as a unique multidisciplinary forum covering the current progress in the synthesis, characterization, emission properties and applications of fluorescent complexes.

The potential topics include but are not limited to the following:

-    Synthesis and single crystal X-ray determination of new fluorescent complexes
-    X-ray determination and fluorescence emission properties of metal complexes
-    Exploitation of the remarkable properties of metal complexes in various existent and emerging  applications
-    Structure- light emission properties relationship of new metal complexes based probes
-    Applications in analytical, biological and medical research of new metal complexes based probes 

Prof. Dr. Jesús Sanmartín-Matalobos
Guest Editor

Manuscript Submission Information

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Keywords

  • Single crystal X-ray
  • Metal complexes
  • Fluorescence properties
  • Complex probes
  • Long lifetime probes

Published Papers (2 papers)

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Research

Open AccessArticle
Fluorescence Properties and Density Functional Theory Calculation of a Structurally Characterized Heterotetranuclear [ZnII2–SmIII2] 4,4′-Bipy-Salamo-Constructed Complex
Crystals 2019, 9(11), 602; https://doi.org/10.3390/cryst9110602 - 17 Nov 2019
Abstract
A new heterotetranuclear complex, [{Zn(L)Sm(NO3)3}2(4,4′-bipy)]·2CH3OH, was synthesized via an unsymmetrical single salamo-like ligand H2L: 6-methoxy-6′-ethoxy-2,2′-[ethylenedioxybis(azinomethyl)]diphenol, with Zn(OAc)2·2H2O, Sm(NO3)3·6H2O, and [...] Read more.
A new heterotetranuclear complex, [{Zn(L)Sm(NO3)3}2(4,4′-bipy)]·2CH3OH, was synthesized via an unsymmetrical single salamo-like ligand H2L: 6-methoxy-6′-ethoxy-2,2′-[ethylenedioxybis(azinomethyl)]diphenol, with Zn(OAc)2·2H2O, Sm(NO3)3·6H2O, and 4,4′-bipyridine by the one-pot method. The [ZnII2–SmIII2] complex was validated via elemental analysis, powder X-ray diffraction (PXRD) analysis, infrared spectroscopy, and ultraviolet–visible (UV–Vis) absorption spectroscopy. The X-ray single crystal diffraction analysis of the [ZnII2–SmIII2] complex was carried out via X-ray single-crystal crystallography. The crystal structure and supramolecular features were discussed. In addition, while studying the fluorescence properties of the [ZnII2–SmIII2] complex, the density functional theory (DFT) calculation of its structure was also performed. Full article
(This article belongs to the Special Issue Fluorescent Complexes)
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Open AccessArticle
A Newly Synthesized Heterobimetallic NiII-GdIII Salamo-BDC-Based Coordination Polymer: Structural Characterization, DFT Calculation, Fluorescent and Antibacterial Properties
Crystals 2019, 9(11), 596; https://doi.org/10.3390/cryst9110596 - 14 Nov 2019
Abstract
A unprecedented hetero-bimetallic 3d-4f BDC-salamo-based coordination polymer, [(L)Ni(BDC)Gd(NO3)(DMF)] was prepared and validated via elemental analyses, IR and UV–Visible absorption spectra, DFT calculation, and X-ray crystallography. The six-coordinated Ni1 ion lies at the N2O2 donor site of the L [...] Read more.
A unprecedented hetero-bimetallic 3d-4f BDC-salamo-based coordination polymer, [(L)Ni(BDC)Gd(NO3)(DMF)] was prepared and validated via elemental analyses, IR and UV–Visible absorption spectra, DFT calculation, and X-ray crystallography. The six-coordinated Ni1 ion lies at the N2O2 donor site of the L2− moiety, and one DMF O atom and carboxylate O atom occupy, collectively, the axial positions, and form a twisted octahedron. The nine-coordinated Gd1 ion consists of three oxygen atoms (O12, O13, and O14) of two carboxylate groups, two oxygen atoms (O8 and O9) derived from one bidentate nitrate group, and an O2O2 coordination site (O1, O2, O6, and O5) of the L2− unit, forming a twisted three-capped triangular prism coordination geometry. Compared to the ligand (H2L), the fluorescence intensity decreases due to the coordination of metal ions. Meanwhile, the antibacterial activities are researched. Full article
(This article belongs to the Special Issue Fluorescent Complexes)
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