Supramolecular Science Research Articles

Supramolecular research by single molecule force spectroscopy

AbstractSingle molecule force spectroscopy (SMFS) is a new kind of technique based on atomic force microscope, which allows detecting force as low as pico‐newtons directly. Herein based on our recent work, we want to demonstrate the investigation of supramolecular structures and interactions in polymer systems by SMFS, such as desorption force between polymer and substrate, identifiability of polymer micelle and its interaction with surfactant, splitting force of ion‐induced helical structure in polysaccharide. It shows well that SMFS is a powerful tool in the study of supramolecular science.

Supramolecular science: A new way to understand the matter world

Supramolecular science: A new way to understand the matter world

From new molecular science to new supramolecular science with macrocyclic polyamines

Exploitation of saturated macrocyclic polyamines has led to the discovery of numerous novel functions and new molecules such as 1) unique proton sponge properties; 2) uptake of biological polyanions; 3) peptide-like metal uptake properties; 4) stabilization of unusual oxidation states of metal ions (e.g., CuIII, NiIII); 5) novel uptake and activation of O2 by new NiII-macrocyclic complexes; 6) a new synthetic pathway to functionalize macrocyclic polyamines; 7) the first gold(III) complex that is a new candidate for gold-plating agents; 8) intrinsic zinc(II) properties pertinent to zinc enzymes; 9) selective recognition of thymine by ZnII complexes; and 10) new cage supermolecules. These newly discovered molecules and properties have opened up a new field of supramolecular science.

Introduction to Supramolecular Chemistry By Helena Dodziuk

Introduction to Supramolecular ChemistryBy Helena DodziukKluwer Academic Publishers, The Netherlands.December 2001, 364 pp.ISBN 1402002149Hardcover, 82.00 GBP.Introduction to Supramolecular Chemistry by Dr Helena Dodziuk of the Institute of Physical Chemistry, Polish Academy of Sciences, is a broad summary of chemical aspects of supramolecular science. * Dr Michael Sherburn is a senior lecturer in organic chemistry at the School of Chemistry, the University of Sydney.

Polyferrocenylsilanes: Metal-Containing Polymers for Materials Science, Self-Assembly and Nanostructure Applications

Polyferrocenylsilanes represent a recently established, readily accessible class of transition metal-containing macromolecules consisting of alternating ferrocene and organosilane units. High molecular weight, soluble samples of these materials were first prepared in the early 1990's by thermal ring-opening polymerization (ROP) of silicon-bridged [1]ferrocenophanes ([1]silaferrocenophanes). More recently living anionic and transition metal-catalyzed ROP methodologies have been developed, which permit unprecedented access to controlled polymer architectures (e.g. block copolymers) with transition metals in the main chain. Polyferrocenylsilane homopolymers and block copolymers offer exciting opportunities in materials and supramolecular science and for nanostructure applications. In this article some recent research areas are discussed which illustrate the broad scope of these interesting new materials.

Polyferrocenylsilanes: Metal-Containing Polymers for Materials Science, Self-Assembly and Nanostructure Applications

Polyferrocenylsilanes represent a recently established, readily accessible class of transition metal-containing macromolecules consisting of alternating ferrocene and organosilane units. High molecular weight, soluble samples of these materials were first prepared in the early 1990's by thermal ring-opening polymerization (ROP) of silicon-bridged [1]ferrocenophanes ([1]silaferrocenophanes). More recently living anionic and transition metal-catalyzed ROP methodologies have been developed, which permit unprecedented access to controlled polymer architectures (e.g. block copolymers) with transition metals in the main chain. Polyferrocenylsilane homopolymers and block copolymers offer exciting opportunities in materials and supramolecular science and for nanostructure applications. In this article some recent research areas are discussed which illustrate the broad scope of these interesting new materials.

Molecules and magnets: joining Chemistry with Physics. The legacy of Olivier Kahn

Abstract The pioneering work of Olivier Kahn on molecular-based magnetic solids is placed in its conceptual and historical context as part of the evolution of coordination chemistry from a molecular to a supramolecular science. The background to the theoretical approaches now current in molecular-based magnetism is surveyed, and those features of the long-range ordered magnetic state, which are unique to molecular lattices, are identified.

Supramolecular Science Where it is and where it is going

Amongst the usual selection of the best from all fields of chemistry, this month's issue contains a high proportion of papers on the subject of supramolecular science. We are highlighting this topic in advance of the NATO Advanced Research Workshop celebrating the conclusion of a long-term special programme on Supramolecular Science; Professors Ungaro, Stoddart, and Reinhoudt have contributed an essay looking at the astonishing expansion of research in this field in recent years, and leading researchers have contributed five Concepts articles discussing clearly and sometimes provocatively the current state of research in their own areas. These are listed in the Table of Contents on the next page.

Supramolecular Science Where it is and where it is going

Supramolecular Science Where it is and where it is going

Creation of new supramolecular science with macrocyclic polyamines

Exploitation of saturated macrocyclic polyamines has led to a discovery of numerous novel functions and new molecules such as (1) unique proton sponge properties; (2) uptake of biological polyanions; (3) peptide-like metal uptake properties; (4) stabilization of unusual oxidation states of metal ions (e.g. CuIII, NiIII); (5) novel uptake and activation of O2 by a new NiII-macrocyclic complex; (6) a new synthetic pathway to functionalize polyamines; (7) the first gold (III) complex that is a new candidate for gold-plating agents; (8) intrinsic zinc (II) properties pertinent to zinc enzymes; and (9) selective recognition of thymine by ZnII complexes. These newly discovered properties have created a way to a new type of supramolecular science.

The market for flame retardant polymer compounds and additives

Over the past 15 years, hyperbranched polymers have received much attention due to their unique chemical and physical properties as well as their potential applications in coatings, additives, drug and gene delivery, macromolecular building blocks, nanotechnology, and supramolecular science. Hyperbranched polymers can be prepared by means of single-monomer methodology (SMM) and double-monomer methodology (DMM). In SMM, the polymerization of an ABn or latent ABn monomer leads to hyperbranched macromolecules. SMM consists of at least four components: (1) polycondensation of ABn monomers; (2) self-condensing vinyl polymerization; (3) self-condensing ring-opening polymerization; (4) proton-transfer polymerization. In DMM, direct polymerization of two suitable monomers or a monomer pair gives rise to hyperbranched polymers. A classical example of DMM, the polymerization of A2 and Bn (n>2) monomers, is well known. Recently, a novel DMM based on the in situ formation of ABn intermediates from specific monomer pairs has been developed. This form of DMM is designated as ‘couple-monomer methodology’ (CMM) to clearly represent the method of polymerization. Many commercially available chemicals can be used as the monomers in these systems, which should extend the availability and accessibility of hyperbranched polymers with various new end groups, architectures and properties. Because a number of comprehensive reviews have been published on SMM, research involving DMM is emphasized here. In addition, recent developments in the modification, functionalization and application of hyperbranched polymers are described.