Metal Complexes of 4'-substituted-2,2':6',2''-terpyridines in Supramolecular Chemistry PDF Download
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Author: Hoi Shan Chow
Publisher:
ISBN:
Category :
Languages : en
Pages : 324
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Author: Hoi Shan Chow
Publisher:
ISBN:
Category :
Languages : en
Pages : 324
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Book Description
Author: Emma R. Schofield
Publisher:
ISBN:
Category :
Languages : en
Pages : 216
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Book Description
Author: Ulrich S. Schubert
Publisher: John Wiley & Sons
ISBN: 3527608427
Category : Science
Languages : en
Pages : 237
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Book Description
The first book to didactically illustrate this particular, prominent class of supramolecular building-blocks covers topics ranging from terpyridine syntheses, via their chemistry and properties, supramolecular structures, and multinuclear metal complexes, right up to functionalized polymers, 3D-architectures, and surfaces. Invaluable for students and lecturers in chemistry and biochemistry, materials scientists, as well as polymer, complex and physicochemists.
Author: Ulrich S. Schubert
Publisher: John Wiley & Sons
ISBN: 3527639632
Category : Technology & Engineering
Languages : en
Pages : 562
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Book Description
In recent years, the utilization of terpyridines both in macromolecular structure assembly and device chemistry has exploded, enabling, for example, supramolecular polymer architectures with switchable chemical and physical properties as well as novel functional materials for optoelectronic applications such as light-emitting diodes and solar cells. Further applications include the usage of terpyridines and their metal complexes as catalysts for asymmetric organic reactions and, in a biological context, as anti-tumor agents or biolabels. This book covers terpyridine-based materials topics ranging from syntheses, chemistry, and multinuclear metal complexes, right up to functionalized polymers, 3D-architectures, and surfaces. Aimed at materials scientists, (in)organic chemists, polymer chemists, complex chemists, physical chemists, biochemists, and libraries.
Author: Ibrahim Eryazici
Publisher:
ISBN:
Category : Ligands
Languages : en
Pages : 309
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Book Description
"Highly ordered, regularly repeating molecular architectures, constructed via self-assembly techniques, have gained importance over the last three decades due to their potential utilitarian applications. A key construction strategy has relied on the synthesis of specific building blocks capable of forming 'higher-ordered' stable structures that have useful properties that can be used as molecular and supramolecular devices. To this end, mono and bis(terpyridine) ligands have been widely used because of their well known photochemical and electronic properties, as well as their ability to facilitate directed, metal-mediated self-assembly. However, limited accessibility to unsymmetrically functionalized terpyridines has restricted their potential use in the construction of more complex infrastructures. For this purpose, methyl-, methoxy-carbonyl- and cyano-substitution patterns on the 4,4"--Positions of 4'-arylterpyridine were chosen since these functionalities afforded simple routes to a variety of useful substituted building blocks for higher-ordered supramacromolecular architectures. Single crystal X-ray studies of these terpyridines revealed that molecules of the diester terpyridine (approximately coplanar) are stacked by the overlap of the central pyridine rings in consecutive layers with mean interplanar distances of 3.4 Å (pi - pi interactions) in the solid state. Moreover, functionalized bis(terpyridine) ligands were achieved via the Kröhnke method and Pd(0) coupling strategy using either 1,3-toluenylbisboronic acid or 1,3-diethynyltoluene with meta- or para-I or Br-phenylterpyridines. A dinuclear tetracationic Fe(II) complex was prepared via metal-directed self-assembly. The chair-like molecular architecture was primarily characterized by X-ray crystallography, mass spectroscopy (ESI-MS), as well as 1H NMR, UV-vis, and CV experiments. Crystal packing of this metallomacrocycle revealed that it formed channels that encapsulated water and MeCN. The low temperature 1H NMR studies suggested that tpy-Fe-tpy moieties in the dimer were interlocked and resembled a spur gear relationship. Surprisingly, dinuclear and trinuclear metallomacrocycles were formed when 1,3-bis(2,2';6',2"-terpyridine-4'-phen-3-ylethynyl)toluene was treated with equimolar amount of Ru(II) that was confirmed by MALDI-TOF mass and NMR spectroscopy. The construction of a heteronuclear (Ru4Fe2) hexameric metallomacrocycle with methyl- and carbonyl-functionalized bis(terpyridyl) moieties was achieves by Pd(0) coupling strategy for potential solar cell applications and supramolecular aggregation of the resulting hexamers through H-bonding. Carboxylic acid functionalized mono- and dinuclear homo- and heteroleptic Ru(II) percursors were also prepared for the same purposes. The single crystal X-ray structure of a homoleptic Ru(II) complex with tetra-ethoxycarbonyl and di(iodo) groups revealed short iodo-carbonyl interactions."--abstract.
Author: John C. McMurtrie
Publisher:
ISBN:
Category : Cations
Languages : en
Pages : 622
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Author: Yaqiu Tao
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Yi-Tsu Chan
Publisher:
ISBN:
Category : Macrocyclic compounds
Languages : en
Pages : 188
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Book Description
Beyond molecular chemistry, supramolecular chemistry focuses on constructing highly complicated and functional systems from chemical species held together by intermolecular non-covalent interactions. Metal-ligand coordinative interaction plays an important role in construction of supramolecules; 2,2':6',2"-terpyridine (tpy) is one ligand that has been widely used in this arena. Bis(terpyridine) ligands with suitable geometry are able to form cyclic structures upon complexation with metal ions. Either by a stepwise procedure or by a self-assembled process, a series of metallomacrocyles containing tpy-M-tpy units (M = metal) has been constructed and isolated. Self-assembly using the labile tpy-Cd[superscript II]-tpy connectivity provides access in quantitative yields to hexacadmium macrocycles that were characterized by traveling wave ion mobility mass spectrometry (TWIM-MS), which enhances the resolving power of electrospray ionization mass spectrometry by adding shape-dependent dispersion and completely deconvolutes the isotope patterns of different charge states, as well as avoids isomer superposition. The self-assembly of a series of Cd[superscript II] metallomacrocycles with different sizes and architectures has been achieved by controlling the stoichiometry and shapes of the building blocks. Novel approaches to the development of artificial multivalent carbohydrate conjugate objects remain an important area of research due to their strong and specific interactions with receptors. Integrating carbohydrates with metallomacrocycles, linear or branched sugar-functionalized 3,5-di(terpyridinyl)arenes have been synthesized and shown to self-assemble using Fe[superscript II] into hexameric and pentameric macrocycles. The self-assembled nanofibers of both macrocycles were generated by slowly diffusing the nonpolar solvent hexane into a homogeneous solution of the complexes in CHCl3/MeOH/MeCN. In order to fabricate nanometer-sized materials from predesigned building blocks, a bottom-up approach has been used to incorporate Au nanorods (NRs) into multicomponent structures containing tpy-FeII-tpy connectivity. This was the first example of Au NR assembly to afford predominately end-to-end linear and branched nanoarchitectures using metal complexes, which can be disassembled under mild conditions.
Author: Koichi Tanaka
Publisher: John Wiley & Sons
ISBN: 9783527322640
Category : Science
Languages : en
Pages : 476
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Book Description
In this second edition of a best-selling handbook all the chapters have been completely revised and updated, while four completely new chapters have been added. In order to meet the needs of the practitioner, emphasis is placed on describing precisely the technology and know-how involved. Adopting a didactic and comprehensible approach, the book guides the reader through theory and applications, thus ensuring its warm welcome among the scientific community. An excellent, essential and exhaustive overview.
Author: Thomas Wirth
Publisher: Springer Science & Business Media
ISBN: 3540441077
Category : Medical
Languages : en
Pages : 275
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Book Description
T. Wirth: Introduction and General Aspects.- M. Ochiai: Reactivities, Properties and Structures.- A. Varvoglis: Preparation of Hypervalent Iodine Compounds.- V.V. Zhdankin: C-C-Bond Forming Reactions.- G.F. Koser: C- Heteroatom-Bond Forming Reactions.- G.F. Koser: Heteroatom- Heteroatom-Bond Forming Reactions.- T. Wirth: Oxidations and Rearrangements.- H. Tohma, Y. Kita: Synthetic Applications (Total Synthesis and Natural Product Synthesis).
