Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Recognition with metallo cavitands
Δημιουργός/Συγγραφέας:	Rahman F.-U. Li Y.-S. [EL] Πετσαλάκης, Ιωάννης Δ.[EN] Petsalakis, Ioannis D. [EL] Θεοδωρακοπούλου, Γιαννούλα[EN] Theodorakopoulos, Giannoula Rebek J. Yu Y.
Εκδότης:	National Academy of Sciences
Ημερομηνία:	2019
Γλώσσα:	Αγγλικά
ISSN:	0027-8424
DOI:	10.1073/pnas.1909154116
Άλλο:	PubMed ID: 31427538
Περίληψη:	We describe here the effects ofmetal complexation on themolecular recognition behavior of cavitands with quinoxaline walls. The nitrogen atoms of the quinoxalines are near the upper rim of the vase-like shape and treatment with Pd(II) gave 2:1 metal:cavitand derivatives. Characterization by 1H, 13C NMR spectroscopy, HR ESIMS, and computations showed that the metals bridged adjacent quinoxaline panels and gave cavitands with C2v symmetry. Both water-soluble and organic-soluble versions were prepared and their host/guest complexes with alkanes, alcohols, acids, and diols (up to C12) were studied by 1H NMR spectroscopy. Analysis of the binding behavior indicated that the metals rigidified the walls of the receptive vase conformation and enhanced the binding of hydrophobic and even water-soluble guests, compared to related cavitands reported previously. The results demonstrated that the conformational dynamics of the cavitand were slowed by the coordination of Pd(II) and stabilized the host's complexes.
Τίτλος πηγής δημοσίευσης:	Proceedings of the National Academy of Sciences of the United States of America
Τόμος/Κεφάλαιο:	116
Τεύχος:	36
Σελίδες:	17648-17653
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	Cavitands Metallo cavitand Molecular recognition Pd(II) stabilized cavitand Water-soluble containers
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2019 National Academy of Sciences. All rights reserved.
Όροι και προϋποθέσεις δικαιωμάτων:	All Open Access, Bronze, Green
Σημειώσεις:	CHE 1801153; National Science Foundation, NSF: 1801153; National Natural Science Foundation of China, NSFC: 21801164 This work was supported by the National Natural Science Foundation of China (Grant 21801164), the US National Science Foundation (CHE 1801153).
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο