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Topic: Supramolecular assemblies

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	Supramolecular assembly - Encyclopedia, History, Geography and Biography (Site not responding. Last check: 2007-10-21)
		A supramolecular assembly is a well defined complex of molecules held together by noncovalent bonds.
		While a supramolecular assembly can be simply composed of two molecules (e.g., a DNA double helix or a inclusion compound), it is more often used to denote larger complexes of molecules that form sphere-, rod-, or sheet-like species.
		For instance, Samuel Stupp and coworkers at Northwestern University showed that a supramolecular assembly of peptide amphiphiles in the form of nanofibers could be used to promote the growth of neurons.
	www.arikah.com /encyclopedia/Supramolecular_assemblies (319 words)

	Interfacial Supramolecular Assemblies (Site not responding. Last check: 2007-10-21)
		Supramolecular assemblies, constructed using single electro- or photoactive molecules as building blocks, offer a striking way to create materials whose organized architecture makes them suitable for developing molecular electronic devices.
		This book describes the properties of supramolecular assemblies that are constructed on solid platforms but where the properties of the support play a very significant role in the overall properties of the system, i.e., its distinct functions can no longer be assigned to the molecular components and the platform on which it is assembled.
		Supramolecular Chemistry: A Concise Intr : Supramolecular chemistry is a vast interdiscipli...
	www.china-manufactory.com /208685.html (428 words)

	India encyclopedia : Cultural Information , Maps, India politics and officials, Indian History. Travel to India (Site not responding. Last check: 2007-10-21)
		A supramolecular assembly or "supermolecule" is a well defined complex of molecules held together by noncovalent bonds.
		While a supramolecular assembly can be simply composed of two molecules (e.g., a DNA double helix or an inclusion compound), it is more often used to denote larger complexes of molecules that form sphere-, rod-, or sheet-like species.
		Supramolecular assemblies are being investigated as new materials in a variety of contexts.
	www.indiaiworld.com /wiki-Supramolecular_assemblies (497 words)

	Supramolecular assemblies (Site not responding. Last check: 2007-10-21)
		A supramolecular assembly is an assembly of molecules held together by noncovalent bonds.
		Nanoscale supramolecular assemblies can be readily accessed since the components are much smaller and can be synthesized in much fewer steps.
		For instance, Stupp and coworkers showed that a supramolecular assembly of amphiphilic peptides in the form of nanofibers could be used to promote the growth of neurons.
	www.guideofpills.com /Supramolecular_assemblies.html (239 words)

	Supramolecular assembly dynamics -- Davis et al., 10.1073/pnas.052018299 -- Proceedings of the National Academy of ...
		inhibit assembly of the multitudes of unintended assemblies.
		Growth of a dodecahedral coordination assembly from 50 components as the ratio of vertex to linear units is increased (17).
		The use of supramolecular assemblies as reaction vessels is emerging as a new direction in the field (27-32).
	www.pnas.org /cgi/content/full/052018299v1 (2192 words)

	On the molecular assembly of copper phtalocyanine derivatives for sensing device development (Site not responding. Last check: 2007-10-21)
		Supramolecular assemblies (1,2) of organic materials represents an exciting perspective for the future trend in device applications, such as sensors, memories, optoelectronic device and semiconductive junctions as well.
		MPc are organic semiconductors and the understanding of their supramolecular assemblies, namely solid state arrangements, affect strongly the device properties, i.e.
		Supramolecular assemblies were fabricated by depositing alternating layers of CuPc and cadmium arachidate and then structurally characterized by X-ray synchrotron radiation.
	www.fondazione-elba.org /59.htm (504 words)

	University of Colorado - MCDB Department (Site not responding. Last check: 2007-10-21)
		We are particularly interested in the architectural arrangement of signaling molecules and characterizing the ways in which such molecular assemblies are formed and undergo changes during synaptic transmission and modulation.
		Supramolecular organization and assembly of biomolecules occurs throughout biology.
		We are interested in supramolecular protein assemblies such as the channel clustering proteins rapsyn and PSD95, and the self assembling GTPase dynamin.
	mcdb.colorado.edu /faculty/stowell.htm (436 words)

	Department of Chemistry - Faculty
		The rational construction of structurally controlled supramolecular assemblies (e.g., noncentrosymmetric and chiral solids) remains a great challenge.
		Preliminary results on chiral sensing using these supramolecular systems have been very encouraging: enantiopure metallo-cycles and -cages tend to exhibit much higher enantioselectivity than their chiral building blocks, presumably a result of better-defined chiral environments conferred by the supramolecular assemblies.
		These discrete chiral supramolecular systems with nanoscopic dimensions will be subsequently incorporated into macroporous organic polymers to obtain hybrid materials that are exploitable for practical chiral sensing, separation, and catalysis.
	www.chem.unc.edu /people/faculty/linw/wlresproj.html (772 words)

	Laser Assisted Deposition Of Bacteriorhodhopsin
		Interfacing of individual and intact preformed supramolecular assemblies of biomolecules onto a solid substrate is important as such molecular assemblies can serve as self-contained single modules for fabrication of molecular devices.
		The supramolecular assemblies are evenly spaced as is evident from the distribution of their spacings with the peak around 15 µm (Figure 5).
		Supramolecular assemblies of bR could be physically lifted and deposited onto solid substrates by means of LAD.
	www.foresight.org /Conferences/MNT6/Papers/Agarwal/index.html (2192 words)

	Michael Stowell
		Stowell’s research is focused on molecular and supramolecular structures that facilitate communication between neurons at the chemical synapse.
		His approach is to investigate individual proteins using x-ray and electron crystallographic methods and to combine this information with EM images obtained via 3-D reconstruction of supramolecular assemblies and tomographic analysis of the intact chemical synapse.
		Stowell is interested in supramolecular protein assemblies such as the channel clustering proteins rapsyn and PSD95, the self assembling GTPase dynamin, as well as the viral coat protein of tobacco mosaic virus.
	www.colorado.edu /neuroscienceprogram/center/people/michael_stowell.html (464 words)

	Prof. Kerry K. Karukstis (Site not responding. Last check: 2007-10-21)
		Supramolecular chemistry extends beyond the realm of individual molecules to focus on intermolecular non-covalent interactions between two or more molecules to create an organized association or structure.
		A unifying theme of research in my laboratory is the creation of a variety of dynamic supramolecular assemblies on the basis of electrostatic interactions and the subsequent use of spectroscopic probes and light scattering to characterize these systems.
		We are using supramolecular systems to create structures that mimic biological membranes, exhibit enhanced microencapsulation, or function as chemical sensors.
	www2.hmc.edu /~karukstis/index.htm (245 words)

	Shane Telfer, Institute of Fundamental Sciences, Massey University
		We are interested in all aspects of supramolecular chemistry that involve the use of transition metal ions.
		Second, the metal ions may endow these supramolecular assemblies with useful functional properties such as fluorescence, electrochemical, or catalytic properties.
		Nucleobase recognition motifs are ideal components of supramolecular assemblies as they are capable of switchable, strong, and selective hydrogen bonding interactions.
	www.massey.ac.nz /%7Ewwifs/staff/telfer.shtml (830 words)

	The Achim Lab - Supramolecular Assemblies Containing Transition Metal Ions
		Progress in supramolecular chemistry is driven by the human quest for sophisticated, high-symmetry structures and by the possible applications these structures have in fields like materials science, chemical technology, and medicine.
		Structures containing transition metal ions are of particular interest because of special magnetic and electric properties conferred upon the supramolecular assemblies by the presence of multiple metal paramagnetic centers.
		One of the most interesting structures pursued in supramolecular chemistry is that of helix.
	www.chem.cmu.edu /groups/achim/research/supra.html (463 words)

	LMS: About LMS
		Charge transfer in supramolecular assemblies of DNA is unique because of the notion that the π-stacked bases within the duplex may mediate the transport, possibly leading to damage and/or repair.
		Since the first report on conductive one-dimensional DNA crystals more than 30 years ago, different methods have been used for the study of conductivity, the latest of which is the measurement of conductance on the mesoscopic scale, which suggests a large band-gap semiconductor behavior.
		As ET occurs only through DNA assemblies that have a specific, well-coupled alignment of the DNA bases, motions of the DNA bases that lead to these ET-active conformations can serve as a gate for ET reactions, and thus modulate the rate constants and yields of ET.
	www.its.caltech.edu /~lms/research/dna.html (836 words)

	PNR 47 - Matériaux fonctionnels supramoléculaires - Interview de Marcel Mayor (Site not responding. Last check: 2007-10-21)
		In the field of optics, for instance, there are supramolecular films that can be placed on the surface of a piece of glass in order to make the latter more or less opaque depending on the degree of sunlight.
		Marcel Mayor: Because the molecular components of supramolecular assemblies are not definitively linked to one another, it is possible, for instance, to conceive of a material that is able to repair itself.
		From 1998 to early 2005, he was in charge of a supramolecular chemistry research group at the nanotechnology institute of the Karlsruhe research centre.
	www.swiss-science.org /_nfp47/html_e/Interview/Mayor/in_mayor_e.html (1360 words)

	Supramolecular Assemblies for Molecular Electronics and Devices
		An important property of the cationic supramolecular systems is their ability to form homogeneous molecular films, allowing the assembly of bilayers by dip-coating with suitable anionic sulphonated porphyrins and phtalocyanines [3].
		According to our molecular mechanics calculations, this type of supramolecular assembly requires a specially designed molecular architecture in order to minimize steric hindrance and to allow efficient stacking and molecular recognition, as illustrated in Fig.
		The assembly involves the orientation of the pi-conjugated rings, which are kept together by means of strong hydrophobic intermolecular interactions, as well as by the electrostatic interactions between the peripheral cationic and anionic residues.
	www.foresight.org /Conferences/MNT9/Abstracts/Toma/index.html (333 words)

	Profiles
		Supramolecular chemistry, organometallic chemistry, crystal engineering, hydrogen bonding in inorganic chemistry, intermolecular interactions, molecular recognition, self-assembly, X-ray and neutron diffraction, charge density analysis of chemical bonds, computational chemistry.
		Our research can be divided, broadly speaking, into three areas: (i) inorganic supramolecular chemistry, (ii) organometallic chemistry emphasizing metal-hydrogen interactions, and (iii) use of computational and high-resolution diffraction methods in fundamental studies of unusual and weak interactions in inorganic chemistry.
		Work in this area involves the use of transition metals to influence the construction and properties of supramolecular assemblies in the solid state (crystal engineering) and in solution.
	www.shef.ac.uk /chemistry/staff/profiles/brammer.html (926 words)

	CRC Press Online (Site not responding. Last check: 2007-10-21)
		Supramolecular Polymers, Second Edition details assembly processes and structure-function correlation in natural and synthetic self-assembling materials, focusing on developments occurred over the past five years.
		Supramolecular Polymers, Second Edition ties together potential applications such as those of nanostructures with dynamic-combinatorial-adaptive self-healing features, opto-electronic devices, supramolecular amphiphiles, hydrogels, organic/inorganic nanocomposites, molecular biosensors, molecular imprinting, molecular engines, templates for superlattices with prescribed symmetry.
		Supramolecular chemistry is the outburst topic of the next generation of science.
	www.crcpress.com /shopping_cart/products/product_detail.asp?sku=DK3116&parent_id=&pc= (352 words)

	Supramolecular assemblies - Facts, Information, and Encyclopedia Reference article (Site not responding. Last check: 2007-10-21)
		Supramolecular assemblies - Facts, Information, and Encyclopedia Reference article
		Supramolecular assembly is the creating of molecular assemblies that are beyond the scale of one molecule, including on the order of cells.
		Supramolecular assembly and molecular recognition are the building blocks of supramolecular chemistry.
	www.startsurfing.com /encyclopedia/s/u/p/Supramolecular_assemblies.html (66 words)

	Nanotechnology -- Supramolecular Chemistry
		Nobel Prize for Chemistry in 1987 in recognition of their work on "host-guest" assemblies (in which a host molecule recognises and selectively binds a certain guest).
		covalent bonding (which are the kind of bonds which hold molecules together) therefore supramolecular assemblies are usually far less stable than molecular compounds (for example, they can be more suceptible to breaking apart at high temperatures or if they are mixed with acid).
		These useful properties may lead to the application of these assemblies as—and this is a list of random examples—high-tech sensors for pollutants in air or water, compact information storage devices for next-generation computers, as high-performance
	www.edinformatics.com /nanotechnology/supramolecular_chemistry.htm (566 words)

	Supramolecular assemblies Article, Supramolecularassemblies Information (Site not responding. Last check: 2007-10-21)
		This occursby weak interactions, i.e., not covalent bonding but van der Waals interactions, dipole -dipole interactions, ionic interactions or hydrogen bond.
		Supramolecular assembly and molecular recognition are the building blocks of supramolecularchemistry.
		, interactions, supramolecular assembles, dipole, supramolecular asemblies, ionicinteractions, supramolecula rassemblies, supramolecularchemistry, supamolecular assemblies, buil...
	www.anoca.org /assembly/interactions/supramolecular_assemblies.html (104 words)

	Interfacial Supramolecular Assemblies -- Books
		Describes the supramolecular properties of molecular assemblies that contain a solid phase, offering an integrated approach to measurement and addressibility.
		* The prospects for the future of interfacial supramolecular assemblies are considered.
		This book will be of interest to researchers, final year undergraduates and postgraduates in the areas of supramolecular chemistry, photophysics, electrochemistry and functional materials.
	www.cadgate.com /book/un/471490717 (513 words)

	Jerry L. Atwood
		Although most biologically based supramolecular systems are far too complex to be studied systematically in terms of separate interactions, a smaller synthetic system may be studied in significantly greater detail.
		In addition to providing a grounds for classification, it was anticipated that such an approach would allow one to identify similarities at the structural level, which, at the chemical level, may not seem obvious and may be used to design large, spherical host assemblies.
		Our research is currently engaged in the use of the Platonic and Archimedean solids as models for supramolecular assemblies.
	www.chem.missouri.edu /faculty/Atwood/research.html (798 words)

	Michaele Hardie, School of Chemistry, University of Leeds
		Major research interests are in the fields of supramolecular chemistry and crystal engineering.
		We also have an interest in the supramolecular chemistry of large main group clusters, notably carbaboranes, including the use of anionic carboranes as templating molecules for coordination networks (with J.D.Kennedy).
		These areas are complementary, and encompass ligand/host-molecule synthesis, supramolecular chemistry (the chemistry of inter-molecular interactions and complexes), structural chemistry, coordination chemistry and main group chemistry.
	www.chem.leeds.ac.uk /People/Hardie.html (368 words)

	Module: Interfacial and Supramolecular Chemsitry
		To elucidate the formation, analytical characterisation and properties of electroactive and photoactive interfacial supramolecular assemblies built using polymeric and monomeric surface active components.
		Student should be familiar with the: * Properties of interfaces and interfacial supramolecular assemblies including polymer films, monolayers and nanostructures.
		Formation of interfacial supramolecular assemblies using polymeric and monomeric building blocks.
	www.dcu.ie /registry/module_contents.php?function=2&subcode=CS404 (310 words)

	National Metallurgical Laboratory, Jamshedpur (Site not responding. Last check: 2007-10-21)
		Synthesis of supramolecular assemblies using the knowledge of intermolecular interactions such as hydrogen bonds is currently an area of frontier research, with a focus on developing catalysts with tailor-made properties and design of miniature circuits in the electronic industry.
		Supramolecular assemblies of benzenetetracarboxylic acid with aza donor molecules like phenanthrolines, phenazine and bipyridyls with and without water molecule are characterized by single crystal X-ray diffraction methods.
		These assemblies occur in two classes - host-guest systems (with aza molecules being in the channels created by the acid molecules) and assemblies with infinite molecular tapes.
	www.csir.res.in /csir/external/heads/aboutcsir/annual_report/2003-2004/Chemical_Sciences.htm (4163 words)

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