Supramolecular organisation

Solvent-drop grinding was next applied as an eco-friendly modification to a previously described preparation of a crystalline organic inclusion compound. Initial work had demonstrated solution-mediated supramolecular organisation and solid-state topochemically controlled reactivity in a system involving l,2-bis(4-pyridyl)ethylene (bpe) 32 and 1,2,4,5-benzenetetracar-boxylic acid (bta) 33 [57]. A single crystal of a 2 1 bpe bta 32 33 cocrystal was... 

S. Nave, C. Mandin, L. Martinet, L. Berthon, F. Testard, C. Madic, and T. Zemb. Supramolecular organisation of tri-n-butyl phosphate in organic diluent on approaching third phase transition. Phys. Chem. Chem. Phys., 6(4) 799-808, 2004. 

The balance between molecular structure and supramolecular organisation is essential in the preparation of materials if their properties are to be of any... 

Metallomesogens have been shown to form helical supramolecular organisations in their mesophases [95]. Chiral oxazoline complexes with various metal ions and six alkyl chains did not show LC behaviour, but when mixed with trinitrofluorenone form achiral smectic A phases [96]. Furthermore, when a branch was included in the structure of the ligands (Fig. 12) the corresponding complexes with copper(II) and palladium(II) form columnar mesophases which have a helical organisation [97]. The presence of the stereogenic centre near the central metal ion in these complexes (Fig. 12) is enough to cause the parallel molecules to stack in a tilted manner with... 

S. R. Collinson and D. W. Bruce Metallomesogens-Supramolecular Organisation of Metal Complexes in Fluid Phases, in Perspectives in Supramolecular Chemistry Transition Metals in Supramolecular Chemistry, vol. 5 (ed. J. P. Sauvage), Wiley, Inc., New York, 1999, pp. 285-369. 

Barber J and Rogner M. (1996) Supramolecular organisation of the Photosystem II complex from green plants and cyanobacteria. Proc Nat. Acad Sci USA 92 175-179 Boekema EJ, van Roon H and Dekker JP (1998) Specific... 

T. Jaroch, M. Knor, R. Nowakowski, M. Zagorska, and A. Pron, Effect of molecular mass on supramolecular organisation of poly(4,4"-dioctyl-2,2 5, 2"-terthiophene). Phys. Chem. Chem. Phys., 10, 6182 (2008). 

J.M. Verilhac, G. LeBlevennec, D. Djurado, F. Rieutord, M. Chouiki, J.P. Travers, and A. Pron, Effect of macromolecular parameters and processing conditions on supramolecular organisation, morphology and electrical transport properties in thin layers of regioregular poly(3-hexylthiophene). Synth. Met., 156, 815 (2006). 

When native natural fibres are used in conventional textile yams, the manufacturer has control over the macroscopic degree of twist imparted to the filaments, and (within limits) the length of filaments used. However, (s)he at best has only partial control over stmeture and properties at length scales smaller than that of the filaments. At the.se smaller length scales, nature controls the stmctural variables that will dictate fibre strength the primary stmeture (monomer sequence) of the polymer chains, the conformation (shape) of the chains, and the supramolecular organisation of the chains. Often the chains adopt hierarchical helical stmetures, exemplified by those in keratin (Fig. 1). Combined with the macroscopic twist in yams, the molecular and... 

The rapid progress in correlating the molecular structure, conformation, supramolecular organisation and the chemical and physical properties of organic polymers, coupled to the continually improving capacity to model these things theoretically [16] continues to place heavy demands on the methods available for the precisely controlled synthesis of... 

Nigen M, Gaillard C, Croguennec T et al (2010) Dynamic and supramolecular organisation of a-lactalbumin/lysozyme microspheres a microscopic study. Biophys Chem 146 30-35... 

Jungas C, Ranck JL, Rigaud JL, Joliot P and Vermeglio A. Supramolecular organisations of the photosynthetic apparatus of Rhodobacter sphaeroides. EMBOJ. 1999 18 534-542. 

An additional interesting point to be noticed is the solid-state organization of Pd(ll) and Cu(l) complexes 7h and 8h into columns in which each molecule stacked with its enantiomeric neighbor (Fig. 11.6, intennolecular distance 3.5-3.6 A). This type of supramolecular organisation, which is due to 7t-stacking of the... 

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