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Macrocyclic Molecular-Based Materials for Biomedical, Environmental and Energy Conversion Applications

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

Deadline for manuscript submissions: 30 April 2025 | Viewed by 1085

Special Issue Editor


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Guest Editor
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
Interests: charge/energy transfer mechanisms in photo-electrochemical devices; structural design of rational control intra-/inter-molecular electron transport processes; metalloporphyrin chemistry; chemosensors for environmental and bio-applications

Special Issue Information

Dear Colleagues,

Macrocyclic molecules, such as porphyrins, phthalocyanines and peptides, possess versatile photophysical and electronic properties, making them promising candidates for application in the analysis of biosystems, the environment and energy-related fields. Science still lacks a deep understanding of numerous topics related to these compounds. For instance, the structure–performance relationships, the interfacial charge transfer mechanisms, the intra-/inter-molecular energy/electron transfer pathways, structure-dependent chemical bond formation and cleavage energy barriers, etc., remain poorly understood. This Special Issue is devoted to tackling the challenges related to the molecular engineering of the macrocyclic molecules or the design of novel composite materials derived from these compounds. Submissions are welcomed on topics that include, but are not limited to:

  1. Macrocylic chemosensors for the detection of ions, pH, viscosity, etc.;
  2. Structural modification for homogeneous catalysis, photodynamic therapy, optoelectronics, photovoltaics, etc.;
  3. Construction of macrocyclic molecular-doped composites, or metal-organic framework and covalent–organic framework materials derived from macrocylic molecules, for photocatalysis, photodegradation, photoelectrochemical cells and electrocatalysis;
  4. Design of functional structures for interesting charge transfer mechanisms.

Prof. Dr. Long Zhao
Guest Editor

Manuscript Submission Information

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Keywords

  • macrocyclic molecules
  • chemosensors
  • catalysis
  • photovoltaics
  • composite catalysts

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Published Papers (2 papers)

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Research

16 pages, 8336 KiB  
Article
Functionalized Cyclodextrin/Carboxymethyl Cellulose Composite Hydrogel with Double Network Structure for Adsorption of Heavy Metal Ions in Wastewater
by Hong Zhang, Xiaodong Yang, Xin Zhang, Wenbin Liu, Meiqing Fan and Lei Wang
Molecules 2024, 29(22), 5414; https://doi.org/10.3390/molecules29225414 - 16 Nov 2024
Viewed by 385
Abstract
Heavy metal ions in industrial wastewater pose significant environmental and ecological threats. In this work, a hydrogel featuring a double network structure was synthesized via radical polymerization and cross-linking of β-cyclodextrin (CD) and carboxymethylcellulose (CMC) with acrylic acid (AA). The hydrogel’s functional groups [...] Read more.
Heavy metal ions in industrial wastewater pose significant environmental and ecological threats. In this work, a hydrogel featuring a double network structure was synthesized via radical polymerization and cross-linking of β-cyclodextrin (CD) and carboxymethylcellulose (CMC) with acrylic acid (AA). The hydrogel’s functional groups and microstructure were characterized using Fourier transform infrared spectroscopy (FTIR-ATR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Mechanical properties were evaluated through rheological and compression tests. The study examined the impact of initial metal ion concentration, adsorbent-ion contact time, and solution pH on adsorption capacity. The maximum adsorption capacities of the functionalized CD/CMC-PAA-MBA hydrogel for Cu2+, Pb2+, and Cd2+ ions were 158.12, 393.56, and 290.12 mg/g, respectively. Notably, the hydrogel exhibited the highest selectivity for Pb2+ in mixed solutions. The adsorption kinetics of the metal ions were modeled using the pseudo-second-order rate equation and the Langmuir adsorption isotherm. Full article
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10 pages, 4453 KiB  
Article
Bi2Te3/Carbon Nanotube Hybrid Nanomaterials as Catalysts for Thermoelectric Hydrogen Peroxide Generation
by Chunlei Li, Shun Li, Long Zhao and Jianming Zhang
Molecules 2024, 29(22), 5242; https://doi.org/10.3390/molecules29225242 - 6 Nov 2024
Viewed by 423
Abstract
Harnessing waste heat from environmental or industrial sources presents a promising approach to eco-friendly and sustainable chemical synthesis. In this study, we introduce a thermoelectrocatalytic (TECatal) system capable of utilizing even small amounts of heat for hydrogen peroxide (H2O2) [...] Read more.
Harnessing waste heat from environmental or industrial sources presents a promising approach to eco-friendly and sustainable chemical synthesis. In this study, we introduce a thermoelectrocatalytic (TECatal) system capable of utilizing even small amounts of heat for hydrogen peroxide (H2O2) production. We developed a nanohybrid structure, combining carbon nanotubes (CNTs) and Bi2Te3 nanoflakes (Bi2Te3/CNTs), through a one-pot synthesis method. Bi2Te3, as a thermoelectric (TE) material, generates charge carriers under a temperature gradient via the Seebeck effect, enabling them to participate in surface redox reactions. However, the rapid recombination of these charge carriers greatly limits the TECatal activity. In the Bi2Te3/CNTs nanohybrid system, the introduction of CNTs substantially enhances the efficiency of H2O2 production, as the strong bonding between CNTs and Bi2Te3, along with the excellent conductivity of CNTs, facilitates charge carrier separation and transport, as confirmed by TE electrochemical tests. This study underscores the significant potential of thermoelectric nanomaterials for converting waste heat into green chemical synthesis. Full article
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