Special Issue "Organic-Framework-Based Porous Nanostructures: Synthesis and Their Potential in Photo-Electro Catalysis and Bio-Sensing"

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Organic Crystalline Materials".

Deadline for manuscript submissions: closed (13 May 2023) | Viewed by 2022

Special Issue Editors

Department of Chemical Engineering, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, Gyeongbuk 712-749, Republic of Korea
Interests: photovoltaics; photocatalysis; photoelectrochemical; bio-sensing
Special Issues, Collections and Topics in MDPI journals
Assistant Professor, Department of Engineering Chemistry, College of Engineering, Koneru Lakshmaih Education Foundation, Vaddeswaram, AP, India
Interests: electrochemical advanced oxidation process; zeolite catalysis; water decontamination; heterogeneous catalysis
Special Issues, Collections and Topics in MDPI journals
Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA
Interests: Coordination chemistry; stable radical complexes; Organic chemsitry; Grafting complexes on mesoporous materials; solar cells; photoelectrochemical cells; excited-state lifetimes

Special Issue Information

Dear Colleagues,

Covalent organic frameworks (COFs), metal–organic frameworks (MOFs), hydrogen-bonded organic frameworks (HOFs), and graphene–organic frame works (GOFs) are the new class of crystalline porous networks attracting more attention due to their unique crystalline ordered structure, easy tenability, large surface area, pore size, and thermal stability. Furthermore, the ability to control scales that vary in length from the atomic to the bulk structure allows access to an almost infinite variety of organic frameworks through the careful selection of the precursor and their derived materials. Indeed, MOFs and COFs have been investigated as a class of useful functional materials. Surprisingly, recent research has revealed that MOFs are exceptionally good precursors for a wide range of nano-hybrids as active materials in both chemical and biological applications.

A significant amount of literature has reported the use of MOFs in a wide range of applications, including carbon dioxide reduction into solar fuels, pollutant degradation, sensing, gas storage, drug delivery, gas vapour separation, luminescence, lithium-ion batteries, water treatment such as photo- and electro-catalysis as well as enzyme-encapsulation-based bio-sensing and bio-fuel cell applications. Specifically, these porous organic framework capsules that house enzymes not only shield them from harsh catalytic conditions, but also make it easier for guest molecules to diffuse selectively through the carrier. Because of their intricate and delicate structures, enzymes must be protected by a support material when exposed to harsh catalytic conditions.

The design and modification of various organic frameworks is an emerging field that presents ample opportunities. Many new materials have indeed been developed, and the potential seems endless, but the application of MOFs remains undiscovered mainly in industrial technology.  It is expected that continued scientific research will enable their potential applications.  We therefore decided to launch a Special Issue devoted to "organic-framework-based porous nanostructures: synthesis and their potential in bio-sensing and photo-electro catalysis", with a special emphasis on the preparation strategies and their widespread applications.

Dr. Ganesh Koyyada
Dr. Naresh Mameda
Dr. Anil Reddy Marri
Guest Editors

Manuscript Submission Information

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  • organic crystal structural engineering
  • coordination chemistry
  • organic compounds
  • morphology
  • enzyme
  • sensing
  • photo-electro catalysis
  • remediation of water/wastewater contamination

Published Papers (1 paper)

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Effects of Braid Angle and Material Modulus on the Negative Poisson’s Ratio of Braided Auxetic Yarns
Crystals 2022, 12(6), 781; https://doi.org/10.3390/cryst12060781 - 27 May 2022
Cited by 1 | Viewed by 1394
Fibers and textiles are ubiquitous in our daily lives, with mechanical properties that match the design specifications for the task for which they are intended; the development of yarns with a negative Poisson’s ratio (NPR) is a hot topic of current research, owing [...] Read more.
Fibers and textiles are ubiquitous in our daily lives, with mechanical properties that match the design specifications for the task for which they are intended; the development of yarns with a negative Poisson’s ratio (NPR) is a hot topic of current research, owing to their potential for use in high-performance textiles (e.g., military, sports, etc.). This study described a simple approach to constructing braided, helically interlaced yarns. When a torque is applied, the yarns prevent the wrapped component from dislodging from the core. The geometry and auxetic behavior of the braided helical structure was analyzed for two different combinations of core materials with similar wrap materials and different braiding angles. Two elastomeric materials (polyurethane (PU) and polyester) served as monofilament cores, while two stiffer multifilament wrap yarns (ultrahigh molecular weight polyethylene (UHMWPE) and polyethylene terephthalate (PET)) served as wrap yarns. In addition, the behavior of yarns braided at seven different angles was investigated to determine the materials’ response to the applied braided configuration’s NPR. The NPR was influenced by the core and wrap materials used and the braiding angle. The NPR value was greater for a core comprising more excellent elasticity (e.g., PU versus polyester); a smaller wrap angle and a slower braiding speed also led to a higher NPR value. The maximum NPR value of −1.70 was obtained using a PU core wrapped at a 9° angle and a strain value of 0.5. Full article
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