skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Different and Often Opposing Forces Drive the Encapsulation and Multiple Exterior Binding of Charged Guests to a M 4 L 6 Supramolecular Vessel in Water

Journal Article · · Chemistry - A European Journal
 [1];  [1];  [1];  [2];  [3]; ORCiD logo [1]
  1. Department of Chemistry University of California, Berkeley and Chemical Science Division, Lawrence Berkeley National Laboratory Berkeley California 94720-1460 USA
  2. Istituto di Biostrutture e Bioimmagini CNR, UOS Catania Via P. Gaifami 18 95125 Catania Italy
  3. Dipartimento di Scienze Chimiche Università degli Studi di Catania Viale A. Doria 6 95125 Catania Italy

Abstract The supramolecular assembly [Ga 4 L 6 ] 12− acts as a nanoscale flask to mediate the reactivity of encapsulated reactive guests and also functions as a catalyst to carry out enzyme‐like chemical transformations. The guest binding to the interior cavity and exterior of this host is difficult to untangle because multiple equilibria occur in solution, and only when refining simultaneously data obtained from different techniques, such as NMR, UV/Vis, and calorimetry, can the accurate solution thermodynamics of these host–guest systems be determined. This study reports the driving forces for the inclusion and stepwise exterior guest binding of different aliphatic quaternary ammonium guests to the [Ga 4 L 6 ] 12− assembly. Encapsulation into the host cavity was found to be an entropy‐driven process, whereas exterior ion association is driven either by enthalpically favorable attractive forces or by the entropy gain due to desolvation, depending on guest size and character. The analysis of the energetics of reaction may help predicting and understanding the intimate role and contribution of the transition state in those rate‐accelerated reactions involving this supramolecular assembly as an enzyme‐like molecular flask.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1408154
Journal Information:
Chemistry - A European Journal, Journal Name: Chemistry - A European Journal Vol. 23 Journal Issue: 66; ISSN 0947-6539
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

References (56)

Allosteric Supramolecular Triple-Layer Catalysts journal September 2010
Diffusion of a Highly Charged Supramolecular Assembly: Direct Observation of Ion Association in Water 1 journal March 2008
The Self-Assembly of a Predesigned Tetrahedral M4L6 Supramolecular Cluster journal August 1998
Selektive Wirt-Gast-Bindung von Anionen ohne Hilfe von Wasserstoffbrücken: die Entropie als Designwerkzeug journal November 2011
Rationally Designed Cooperatively Enhanced Receptors To Magnify Host–Guest Binding in Water journal January 2015
Protein-like proton exchange in a synthetic host cavity journal November 2015
Acid Catalysis in Basic Solution: A Supramolecular Host Promotes Orthoformate Hydrolysis journal April 2007
Supramolecular Catalysis in Metal–Ligand Cluster Hosts journal April 2015
Selective Encapsulation of Aqueous Cationic Guests into a Supramolecular Tetrahedral [M 4 L 6 ] 12 - Anionic Host 1 journal August 1998
Enthalpy−Entropy Compensation Reveals Solvent Reorganization as a Driving Force for Supramolecular Encapsulation in Water journal March 2008
Enzymelike Catalysis of the Nazarov Cyclization by Supramolecular Encapsulation journal May 2010
Interactions with Aromatic Rings in Chemical and Biological Recognition journal March 2003
Quantifying High-Affinity Binding of Hydrophobic Ligands by Isothermal Titration Calorimetry journal November 2012
Stereochemistry in Subcomponent Self-Assembly journal April 2014
Molecular recognition of organic anions by a water-soluble calix[4]arene: Evidence for enthalpy–entropy compensation journal February 2012
Solvent and Pressure Effects on the Motions of Encapsulated Guests: Tuning the Flexibility of a Supramolecular Host journal March 2013
Global Multi-Method Analysis of Affinities and Cooperativity in Complex Systems of Macromolecular Interactions journal September 2012
More Chemistry in Small Spaces journal May 2012
Alkane Lengths Determine Encapsulation Rates and Equilibria journal April 2012
Extraction of Hydrophobic Species into a Water-Soluble Synthetic Receptor journal November 2007
Structural Consequences of Anionic Host−Cationic Guest Interactions in a Supramolecular Assembly journal January 2009
A supramolecular microenvironment strategy for transition metal catalysis journal December 2015
Untangling the Diverse Interior and Multiple Exterior Guest Interactions of a Supramolecular Host by the Simultaneous Analysis of Complementary Observables journal June 2016
Molecular Recognition and Stabilization of Iminium Ions in Water journal November 2006
Selective Host-Guest Binding of Anions without Auxiliary Hydrogen Bonds: Entropy as an Aid to Design journal November 2011
Enthalpically driven cyclophane-arene inclusion complexation: solvent-dependent calorimetric studies journal July 1991
Enzyme Mimics Based Upon Supramolecular Coordination Chemistry journal October 2010
Molecular containers assembled through the hydrophobic effect journal January 2015
Factors driving the self-assembly of water-soluble calix[4]arene and gemini guests: a combined solution, computational and solid-state study journal January 2014
Experimental Binding Energies in Supramolecular Complexes journal May 2016
Funktionale molekulare Reaktionskolben: neuartige Eigenschaften und Reaktionen in diskreten, selbstorganisierten Wirtmolekülen journal April 2009
Wechselwirkungen mit aromatischen Ringen in chemischen und biologischen Erkennungsprozessen journal March 2003
Integration and global analysis of isothermal titration calorimetry data for studying macromolecular interactions journal April 2016
Neues zum hydrophoben Effekt - Studien mit supramolekularen Komplexen zeigen hochenergetisches Wasser als nichtkovalente Bindungstriebkraft journal July 2014
A supramolecular approach to combining enzymatic and transition metal catalysis journal January 2013
Selective Monoterpene-like Cyclization Reactions Achieved by Water Exclusion from Reactive Intermediates in a Supramolecular Catalyst journal October 2012
Complexation Thermodynamics of Cyclodextrins journal July 1998
Making Amines Strong Bases:  Thermodynamic Stabilization of Protonated Guests in a Highly-Charged Supramolecular Host 1 journal September 2007
Temporary and Permanent Trapping of the Metastable Twisted Conformer of an Overcrowded Chromic Alkene via Encapsulation journal October 2012
Origins of Large Rate Enhancements in the Nazarov Cyclization Catalyzed by Supramolecular Encapsulation journal February 2014
A synthetic and NMR conformational study of spiro cyclic quaternary ammonium salts journal January 2002
External and Internal Guest Binding of a Highly Charged Supramolecular Host in Water: Deconvoluting the Very Different Thermodynamics journal January 2010
Complexation of biologically active amines by a water-soluble calix[5]arene: A nanocalorimetric investigation journal March 2015
Aza Cope Rearrangement of Propargyl Enammonium Cations Catalyzed By a Self-Assembled “Nanozyme” journal August 2008
Proton-Mediated Chemistry and Catalysis in a Self-Assembled Supramolecular Host journal October 2009
Enzymnachbildungen auf der Basis supramolekularer Koordinationschemie journal October 2010
Concerning the thermodynamics of molecular recognition in aqueous and organic media. Evidence for significant heat capacity effects journal April 1990
Functional Molecular Flasks: New Properties and Reactions within Discrete, Self-Assembled Hosts journal April 2009
The Hydrophobic Effect Drives the Recognition of Hydrocarbons by an Anionic Metal−Ligand Cluster 1 journal October 2007
Release of High-Energy Water as an Essential Driving Force for the High-Affinity Binding of Cucurbit[ n ]urils journal September 2012
The Hydrophobic Effect Revisited-Studies with Supramolecular Complexes Imply High-Energy Water as a Noncovalent Driving Force journal July 2014
Cucurbit[8]uril and Blue-Box: High-Energy Water Release Overwhelms Electrostatic Interactions journal September 2013
Selbstorganisation eines supramolekularen tetraedrischen M4L6-Clusters journal July 1998
Stereochemistry and thermodynamics of the inclusion of aliphatic and aromatic anionic guests in a tetracationic calix[4]arene in acidic and neutral aqueous solutions journal January 2009
Water-soluble, self-assembling container molecules: an update journal January 2011
Cationic Noncovalent Interactions: Energetics and Periodic Trends journal March 2016

Similar Records

External and Internal Guest Binding of a Highly Charged Supramolecular Host in Water: Deconvoluting the Very Different Thermodynamics
Journal Article · Wed Jul 22 00:00:00 EDT 2009 · Journal of the American Chemical Society · OSTI ID:1408154

Structural Consequences of Anionic Host-Cationic Guest Interactions in a Supramolecular Assembly
Journal Article · Wed Jul 09 00:00:00 EDT 2008 · Inorganic Chemistry · OSTI ID:1408154

Catalytic Deprotection of Acetals In Strongly Basic Solution Usinga Self-Assembled Supramolecular 'Nanozyme'
Journal Article · Thu Jul 26 00:00:00 EDT 2007 · Angewandte Chemie International Edition · OSTI ID:1408154

Related Subjects