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Molecules
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Design and Synthesis of Novel Fluorescent Molecules
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Design and Synthesis of Novel Fluorescent Molecules

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

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 4178

Special Issue Editors

Prof. Dr. Renhua Qiu

E-Mail Website
Guest Editor
State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Institute of Shenzhen, Hunan University, Changsha 410082, China
Interests: organic chemistry; organometallic chemistry; antimony chemistry; boron chemistry; C–H functionalization; photocatalysis
Special Issues, Collections and Topics in MDPI journals
Dr. Lifen Peng

E-Mail Website
Guest Editor
Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Interests: organic reaction; acetylene; protecting group; fluorescent material
Dr. Longzhi Zhu

E-Mail Website
Guest Editor
Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
Interests: organic synthesis; C–H functionalization; fluorescent material

Special Issue Information

Dear Colleagues,

Fluorescent molecules have attracted considerable attention owing to their important potential applications in the fields of bioprobes, chemosensors, field-effect transistors, organic light-emitting diodes, security systems, memory devices, pharmaceuticals, etc. Moreover, fluorescent molecules have dramatically increased the quality of our daily life. In recent decades, chemists and materials specialists have designed and fabricated a diversity of organic small fluorescent molecules and polymer fluorescent molecules through theoretical calculations and various chemical reactions, such as transition-metal-catalyzed organic reactions and polymerization.

This Special Issue aims to present recent advances in fluorescent molecules, including the development of novel methods for the design and synthesis of fluorescent molecules, the study of their properties (optical, electronic, biological, etc.), and their application in a broad range of fields, including photoelectric materials, analytical chemistry, biochemistry, medicinal chemistry, etc.

We welcome communications, full research articles, and reviews on topics related to these fields.

Prof. Dr. Renhua Qiu
Dr. Lifen Peng
Dr. Longzhi Zhu
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. 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

  • organic fluorescent molecules
  • polymeric fluorescent molecules
  • new synthetic methods
  • optical properties
  • electronic properties
  • biological properties
  • medicinal chemistry
  • bioprobes
  • chemosensors
  • field-effect transistors
  • organic light-emitting diodes
  • security systems
  • memory devices
  • pharmaceuticals

Published Papers (3 papers)

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Research

13 pages, 3015 KiB  
Article
A Highly Selective and Sensitive Sequential Recognition Probe Zn2+ and H2PO4− Based on Chiral Thiourea Schiff Base
by Shan Yang, Yichuan Huang, Aidang Lu, Ziwen Wang and Hongyan Li
Molecules 2023, 28(10), 4166; https://doi.org/10.3390/molecules28104166 - 18 May 2023
Cited by 3 | Viewed by 1306
Abstract
A series of novel chiral thiourea fluorescent probes HL1–HL6 were designed and synthesized from (1R,2R)-1,2-diphenylethylenediamine, phenyl isothiocyanate, and different substituted salicylic aldehydes. All of the compounds were confirmed by 1H NMR, 13C NMR, [...] Read more.
A series of novel chiral thiourea fluorescent probes HL1–HL6 were designed and synthesized from (1R,2R)-1,2-diphenylethylenediamine, phenyl isothiocyanate, and different substituted salicylic aldehydes. All of the compounds were confirmed by 1H NMR, 13C NMR, and HRMS. They exhibit high selectivity and sensitivity to Zn2+ in the presence of nitrate ions with the detection limit of 2.3 × 10−8 M (HL5). Meanwhile, their zinc (II) complexes (L-ZnNO3) showed continuous response to H2PO4− in acetonitrile solution. The identification processes could further be verified by supramolecular chemistry data analysis, X-ray single-crystal diffraction analysis, and theoretical study. The research provides reliable evidence for an explanation of the mechanism of action of thiourea involved in coordination, which is important for the application of thiourea fluorescent probes. In short, the sensors HL1–HL6 based on chiral thiourea Schiff base will be promising detection devices for Zn2+ and H2PO4−. Full article
(This article belongs to the Special Issue Design and Synthesis of Novel Fluorescent Molecules)
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13 pages, 4123 KiB  
Article
Synergism of Photo-Induced Electron Transfer and Aggregation-Induced Quenching Mechanisms for Highly Sensitive Detection of Silver Ion and Captopril
by Jing Zhu, Lei Hu, Xiangying Meng, Feng Li, Wenjuan Wang, Guiyang Shi and Zhongxia Wang
Molecules 2023, 28(9), 3650; https://doi.org/10.3390/molecules28093650 - 22 Apr 2023
Cited by 2 | Viewed by 1114
Abstract
Carbon-based nanoprobes, with excellent physicochemical performance and biocompatibility, are a kind of ideal nanomaterial for biosensing. Herein, we designed and prepared novel oxygen-doped nitrogen-enrichment carbon nanoribbons (ONCNs) with an excellent optical performance and uniform morphology, which could be used as a dual-mode fluorescence [...] Read more.
Carbon-based nanoprobes, with excellent physicochemical performance and biocompatibility, are a kind of ideal nanomaterial for biosensing. Herein, we designed and prepared novel oxygen-doped nitrogen-enrichment carbon nanoribbons (ONCNs) with an excellent optical performance and uniform morphology, which could be used as a dual-mode fluorescence probe for the detection of Ag+ ion and captopril (Ctl) based on the synergism of photo-induced electron transfer and aggregation-induced quenching mechanisms. By recording the changes in fluorescent intensities of ONCNs, the Ag+ ion and Ctl concentrations can be easily tested in real samples. The results displayed that two good linear relationships existed between the change in fluorescent intensity of ONCNs and the concentrations of Ag+ ion and Ctl in the ranges of 3 μM to 30 μM and 1 μM to 30 μM, with the detection limit of 0.78 µM and 74 nM, respectively. The proposed sensing platform has also been successfully applied for the Ctl analysis in commercial tablet samples based on its high selectivity, proving its value in practical applications. Full article
(This article belongs to the Special Issue Design and Synthesis of Novel Fluorescent Molecules)
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16 pages, 3049 KiB  
Article
Fluorescent Molecular Rotors Based on Hinged Anthracene Carboxyimides
by Yanhai Ni, Wangjian Fang and Mark A. Olson
Molecules 2023, 28(7), 3217; https://doi.org/10.3390/molecules28073217 - 4 Apr 2023
Cited by 1 | Viewed by 1426
Abstract
Temperature and viscosity are essential parameters in medicine, environmental science, smart materials, and biology. However, few fluorescent sensor publications mention the direct relationship between temperature and viscosity. Three anthracene carboxyimide-based fluorescent molecular rotors, 1DiAC∙Cl, 2DiAC∙Cl, and 9DiAC∙Cl, were designed and [...] Read more.
Temperature and viscosity are essential parameters in medicine, environmental science, smart materials, and biology. However, few fluorescent sensor publications mention the direct relationship between temperature and viscosity. Three anthracene carboxyimide-based fluorescent molecular rotors, 1DiAC∙Cl, 2DiAC∙Cl, and 9DiAC∙Cl, were designed and synthesized. Their photophysical properties were studied in various solvents, such as N, N-dimethylacetamide, N, N-dimethylformamide, 1-propanol, ethanol, dimethyl sulfoxide, methanol, and water. Solvent polarizability resulted in a solvatochromism effect for all three rotors and their absorption and emission spectra were analyzed via the Lippert–Mataga equation and multilinear analysis using Kamlet–Taft and Catalán parameters. The rotors exhibited red-shifted absorption and emission bands in solution on account of differences in their torsion angle. The three rotors demonstrated strong fluorescence in a high-viscosity environment due to restricted intramolecular rotation. Investigations carried out under varying ratios of water to glycerol were explored to probe the viscosity-based changes in their optical properties. A good linear correlation between the logarithms of fluorescence intensity and solution viscosity for two rotors, namely 2DiAC∙Cl and 9DiAC∙Cl, was observed as the percentage of glycerol increased. Excellent exponential regression between the viscosity-related temperature and emission intensity was observed for all three investigated rotors. Full article
(This article belongs to the Special Issue Design and Synthesis of Novel Fluorescent Molecules)
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