Molecular Capsules Derived from Resorcin[4]arenes by Metal-Coordination

Schröder, Tobias; Sahu, Satya Narayan; Mattay, Jochen

doi:10.1007/128_2011_279

Cited by 10 publications

(4 citation statements)

References 75 publications

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“…Synthetic cavitands, including those developed by Gibb, , Rebek, , and Anslyn, , demonstrate markedly improved hydrophobic association and binding affinities compared to naturally occurring and synthetically modified cyclodextrins and cucurbiturils. Many of these synthetic cavitands have significant conformational rigidity, which eliminates undesired flexibility in the cavity and facilitates extremely strong binding …”

Section: Underlying Principles Of Chemosensorsmentioning

confidence: 99%

“…Many of these synthetic cavitands have significant conformational rigidity, 137 which eliminates undesired flexibility in the cavity and facilitates extremely strong binding. 138 Hydrophobic association also occurs for polymeric chemosensors. 140,141 In one example, researchers reported the use of highly hydrophobic nanostructures derived from block copolymers for the detection of small-molecule nitroaromatics.…”

Section: Underlying Principles Of Chemosensors 21 Non-covalent Intera...mentioning

confidence: 99%

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Supramolecular Luminescent Sensors

2018

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There is great need for stand-alone luminescence-based chemosensors that exemplify selectivity, sensitivity, and applicability and that overcome the challenges that arise from complex, real-world media. Discussed herein are recent developments toward these goals in the field of supramolecular luminescent chemosensors, including macrocycles, polymers, and nanomaterials. Specific focus is placed on the development of new macrocycle hosts since 2010, coupled with considerations of the underlying principles of supramolecular chemistry as well as analytes of interest and common luminophores. State-of-the-art developments in the fields of polymer and nanomaterial sensors are also examined, and some remaining unsolved challenges in the area of chemosensors are discussed. CONTENTS 4.4. Explosives 4.5. Pharmaceutical Agents 4.6. Biologically Relevant 4.6.1. Adenosine Triphosphate (ATP)

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Section: Underlying Principles Of Chemosensorsmentioning

confidence: 99%

Section: Underlying Principles Of Chemosensors 21 Non-covalent Intera...mentioning

confidence: 99%

Supramolecular Luminescent Sensors

2018

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“…The polymeric micelles prepared by PISA exhibit unique intrinsic hydrophilicity gradients on their surfaces and cores, along with environment-sensitive morphologies. Meanwhile, the catalytic function of polymeric micelles usually requires the coordination with metal colloids, or metal cations to their active sites, producing stabilized metallodendrimers in vitro [33,34]. Hence, the polymeric micelles are capable of mimicking bioactive cell membranes or enzymes to catalyze a series of biochemical reactions, thereby frequently identified as nanoreactors.…”

Section: Catalytic Nanoreactorsmentioning

confidence: 99%

Preparation and applications of the polymeric micelle by polymerization-induced self-assembly (PISA)

Pei

Wan

et al. 2022

J. Phys.: Conf. Ser.

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Polymerization induced self-assembly (PISA) has a high solid content, simple operating steps, and can generally achieve high conversion to monomers in a short time, which has been widely used in the preparation and adjusting to morphologies of polymer micelles self-assembly. In this article, the preparation and applications of the polymeric micelle synthesized by PISA were reviewed. The particle morphology can be adjusted by a variety of active polymerizations with different initiation mechanisms in the preparation of polymer micelles. Among them, free radical active polymerization is more practical. The reversible addition-fragmentation chain transfer (RAFT) and atom transfer radical polymerization (ATRP) were highlighted. Additionally, different shapes such as spheres, worms, and vesicles can be obtained by RAFT in the preparation of nano-objects fields. Researchers construct the phase diagram to get the pure phase for applications. As one form produced by PISA, polymeric micelles are usually artificial nanoreactors for a series of organic and inorganic catalysis and can be used as drug delivery and target agents. Due to the increase in the ultimate tensile strength, RAFT is an optimal technique to produce thermoplastic elastomers.

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“…Usually in resorcinarenes, the resorcinol rings are connected with bridging moieties which results in a locked conformation called a cavitant. They are excellent molecular receptors that contain an enforced cavity large enough to accommodate simple organic compounds or ions [ 124 , 125 , 126 , 127 , 128 ]. Resorcinarenes can be functionalized by introducing many different ligand moieties containing atoms O, S, N, and P both at upper and lower rim.…”

Section: Resorcinarenes-porphyrin Assembliesmentioning

confidence: 99%

Molecular Assemblies of Porphyrins and Macrocyclic Receptors: Recent Developments in Their Synthesis and Applications

et al. 2012

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Metalloporphyrins which form the core of many bioenzymes and natural light harvesting or electron transport systems, exhibit a variety of selective functional properties depending on the state and surroundings with which they exist in biological systems. The specificity and ease with which they function in each of their bio-functions appear to be largely governed by the nature and disposition of the protein globule around the porphyrin reaction center. Synthetic porphyrin frameworks confined within or around a pre-organized molecular entity like the protein network in natural systems have attracted considerable attraction, especially in the field of biomimetic reactions. At the same time a large number of macrocyclic oligomers such as calixarenes, resorcinarenes, spherands, cyclodextrins and crown ethers have been investigated in detail as efficient molecular receptors. These molecular receptors are synthetic host molecules with enclosed interiors, which are designed three dimensionally to ensure strong and precise molecular encapsulation/recognition. Due to their complex structures, enclosed guest molecules reside in an environment isolated from the outside and as a consequence, physical properties and chemical reactions specific to that environment in these guest species can be identified. The facile incorporation of such molecular receptors into the highly photoactive and catalytically efficient porphyrin framework allows for convenient design of useful molecular systems with unique structural and functional properties. Such systems have provided over the years attractive model systems for the study of various biological and chemical processes, and the design of new materials and molecular devices. This review focuses on the recent developments in the synthesis of porphyrin assemblies associated with cyclodextrins, calixarenes and resorcinarenes and their potential applications in the fields of molecular encapsulation/recognition, and chemical catalysis.

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Molecular Capsules Derived from Resorcin[4]arenes by Metal-Coordination

Cited by 10 publications

References 75 publications

Supramolecular Luminescent Sensors

Supramolecular Luminescent Sensors

Preparation and applications of the polymeric micelle by polymerization-induced self-assembly (PISA)

Molecular Assemblies of Porphyrins and Macrocyclic Receptors: Recent Developments in Their Synthesis and Applications

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