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Nanosponges: Synthesis, Characterization, Applications and Perspectives

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

Deadline for manuscript submissions: closed (31 May 2020) | Viewed by 3473

Special Issue Editor


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Guest Editor
Università degli Studi di Palermo, Palermo, Italy
Interests: supramolecular chemistry; cyclodextrins; calixarenes; nanosponges; physical and mechanistic organic chemistry; catalysis; metal nanoparticles; organic spectroscopy

Special Issue Information

Dear Colleagues,

Nanosponges—i.e., hyper-reticulated polymers obtained by joining supramolecular host units (cyclodextrins, calixarenes, etc.) with suitable linkers—constitute an advanced frontier of both supramolecular and materials chemistry. Their synthesis offers several opportunities, due to the possible choice of different “native” or chemically modified starting host units, of different reticulating agents and assembling strategies as well, and to the possibility of further post-functionalization. This leads to large variability in their physicochemical properties and to the possible introduction of sensitivity to external stimuli. Moreover, owing to their largely tunable absorption and release abilities towards both organic and inorganic species, nanosponges have found various applications in diverse fields, spanning from environment remediation to controlled release and drug delivery systems, and to smart supporting materials for catalytic systems. Therefore, this Special Issue is aimed at contributing to a deeper understanding of the microscopic features and the applicative possibilities of this fascinating class of materials.

Prof. Paolo Lo Meo
Guest Editor

Manuscript Submission Information

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Keywords

  • Adsorption
  • BET
  • Calixarenes
  • Catalysis
  • Computational chemistry
  • Cyclodextrins
  • Drug delivery
  • Environment remediation
  • FT-IR
  • Functionalization
  • Host–guest systems
  • Hyper-reticulation
  • Kinetics
  • Molecular recognition
  • Nanoparticles
  • Nanosponges
  • Pillararenes
  • Polymer Chemistry
  • Porosimetry
  • Relaxometry
  • Release
  • Resorcarenes
  • Responsivity
  • SEM
  • Sequestration
  • Smart materials
  • Solid state NMR
  • Supramolecular chemistry
  • Swellability
  • Thermochemistry
  • TEM
  • Tunability

Published Papers (1 paper)

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Research

18 pages, 4202 KiB  
Article
Ag Nanoparticles Stabilized on Cyclodextrin Polymer Decorated with Multi-Nitrogen Atom Containing Polymer: An Efficient Catalyst for the Synthesis of Xanthenes
by Samahe Sadjadi, Fatemeh Ghoreyshi Kahangi, Masoumeh Dorraj and Majid M. Heravi
Molecules 2020, 25(2), 241; https://doi.org/10.3390/molecules25020241 - 7 Jan 2020
Cited by 26 | Viewed by 3067
Abstract
In attempt to broaden the use of cyclodextrin polymer for catalytic purposes, a novel covalent hybrid system was prepared through growth of multi-nitrogen atom containing polymer (PMelamine) derived from reaction of ethylenediamine and 2,4,6-trichloro-1,3,5-triazine on the functionalized cyclodextrin polymer (CDNS). The resulting hybrid [...] Read more.
In attempt to broaden the use of cyclodextrin polymer for catalytic purposes, a novel covalent hybrid system was prepared through growth of multi-nitrogen atom containing polymer (PMelamine) derived from reaction of ethylenediamine and 2,4,6-trichloro-1,3,5-triazine on the functionalized cyclodextrin polymer (CDNS). The resulting hybrid system was then utilized as a catalyst support for the immobilization of silver nanoparticles through using Cuscuta epithymum extract as a naturally-derived reducing agent. The catalytic activity of the catalyst, Ag@CDNS-N/PMelamine, for the synthesis of xanthenes through reaction of aldehydes and dimedone in aqueous media was examined. The results showed high catalytic activity and recyclability of the catalyst. It was believed that cyclodextrin in the backbone of the catalyst could act both as a capping agent for Ag nanoparticles and phase transfer agent to bring the hydrophobic substrates in the vicinity of the catalytic active sites and accelerate the reaction rate. Multi-nitrogen atoms on the polymer, on the other hand, could improve the Ag NPs anchoring and suppress their leaching. Full article
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