Unknown

Dataset Information

0

Self-Assembly of Discrete Porphyrin/Calix[4]tube Complexes Promoted by Potassium Ion Encapsulation.


ABSTRACT: The pivotal role played by potassium ions in the noncovalent synthesis of discrete porphyrin-calixarene nanostructures has been examined. The flattened-cone conformation adopted by the two cavities of octa-cationic calix[4]tube C4T was found to prevent the formation of complexes with well-defined stoichiometry between this novel water-soluble calixarene and the tetra-anionic phenylsulfonate porphyrin CuTPPS. Conversely, preorganization of C4T into a C4v-symmetrical scaffold, triggered by potassium ion encapsulation (C4T@K+), allowed us to carry out an efficient hierarchical self-assembly process leading to 2D and 3D nanostructures. The stepwise formation of discrete CuTPPS/C4T@K+ noncovalent assemblies, containing up to 33 molecular elements, was conveniently monitored by UV/vis spectroscopy by following the absorbance of the porphyrin Soret band.

SUBMITTER: Gaeta M 

PROVIDER: S-EPMC7866244 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

altmetric image

Publications

Self-Assembly of Discrete Porphyrin/Calix[4]tube Complexes Promoted by Potassium Ion Encapsulation.

Gaeta Massimiliano M   Rodolico Elisabetta E   Fragalà Maria E ME   Pappalardo Andrea A   Pisagatti Ilenia I   Gattuso Giuseppe G   Notti Anna A   Parisi Melchiorre F MF   Purrello Roberto R   D'Urso Alessandro A  

Molecules (Basel, Switzerland) 20210129 3


The pivotal role played by potassium ions in the noncovalent synthesis of discrete porphyrin-calixarene nanostructures has been examined. The <i>flattened-cone</i> conformation adopted by the two cavities of octa-cationic calix[4]tube <b>C4T</b> was found to prevent the formation of complexes with well-defined stoichiometry between this novel water-soluble calixarene and the tetra-anionic phenylsulfonate porphyrin <b>CuTPPS</b>. Conversely, preorganization of <b>C4T</b> into a <i>C</i><sub>4v</s  ...[more]

Similar Datasets

| S-EPMC5811093 | biostudies-literature
| S-EPMC2705557 | biostudies-literature
| S-EPMC2525615 | biostudies-literature
| S-EPMC9307019 | biostudies-literature
| S-EPMC7137105 | biostudies-literature
| S-EPMC6750863 | biostudies-literature
| S-EPMC2906596 | biostudies-literature
| S-EPMC6979319 | biostudies-literature
| S-EPMC7289629 | biostudies-literature
| S-EPMC3134555 | biostudies-literature