self assembly and molecular machines

... µm 100 µm cm atomic self- assembly molecular self- assembly colloidal (mesoscopic) self- assembly biological self- assembly interfacial self- assembly Figure 1.1 Classification of self- assemblies based ... IMPLICATIONS OF SELF- ASSEMBLY FOR NANOTECHNOLOGY 8.1 General Concepts and Approach to Nanotechnology 8.2 Self- Assembly and Nanotechnology Share the Same Building Units 8.3 Self- Assembly and Nanotechnology ... APPROACH TO SELF- ASSEMBLY UA,P(x) and UR,P(x) represent the attractive and repulsive potentials for the selfassembly of primary building units, respectively UA,S(x) and UR,S(x), and UA,T(x) and UR,T(x)...

Ngày tải lên: 15/11/2012, 10:12

... lack the cagPAI and are less virulent The Cag secretion system is responsible for the induction of a pronounced pro-inflammatory response in vitro and in vivo, and the translocation and subsequent ... cagPAI and the properties of both conserved and unique components of the Cag-T4SS, together with potential implications for the current understanding of its mode of action The cagPAI and the ... review by Terradot and Waksman [30] This core complex consists of 14 monomers each of the VirB7, VirB9 and VirB10 homologues and does not require other secretion system components for assembly It is...

Ngày tải lên: 06/03/2014, 00:21

... understanding this life-threatening process Extremely short aromatic peptides form amyloid fibrils readily and efficiently The importance of aromatic moieties in the molecular recognition and self- assembly ... peptide studies indicate that very simple motifs contain all the molecular information required for the molecular recognition and self- assembly mediating the formation of amyloid fibrils The small ... as order and directionality, in the self- assembly of amyloid structures [25] This view is in line with the well-known central role of aromatic-stacking interactions in general self- assembly processes...

Ngày tải lên: 23/03/2014, 11:20

... Atomistic and coarse-grained structures of (a-b) (AF)6H5K15 (c-d) F12H5K15 (e-f) F16H5K15 and (g-h) IBU In (a), (c), (e) and (g): O, red; N, blue; C, cyan and H, white In (b), (d) and (e): Ala and ... have been reported to explore the self- assembly of peptides and specific applications Microscopic insights are indispensable for elucidating self- assembly at a molecular level However, few simulation/modeling ... quantitative understanding of selfassembly of peptides, which could facilitate the design of new peptides 29 Chapter Models and Methods Chapter Simulation Methodology Self- assembly is a long time...

Ngày tải lên: 09/09/2015, 08:13

... Polymer self- assembly in nano scale has received a great deal of attention in the last two decades and the number of scientific applications and products based on the principle of self- assembly ... behind the self- assembly (micellization process) is different in organic and aqueous media.5 In organic medium, the self- assembly is usually exothermic (enthalpy driven micellization) and hence ... core of the micelle and A blocks forming the corona (Figure 1.1) Earlier studies on self- assembly of block copolymers were focused in organic solvents, but recently their self- assembly in aqueous...

Ngày tải lên: 09/09/2015, 11:25

... Irreversible Liquid Drying and Molecular Self- Assembly Manuscript in preparation  Nanoscopic Surface Architectures Based on Irreversible Drying and Molecular Self- Assembly of (3-Aminopropyl)triethoxysilane ... based on irreversible liquid drying and molecular self- assembly; and (4) macroscopic surface architectures of self- assembled (3-aminopropyl)triethoxysilane (APTES) and non-equilibrium crystalline ... crystallization, self- epitaxial nucleation (SEN), diffusion-limited aggregation (DLA), and water-adsorption induced morphology transition, self- assembly, fingering instability, repeating slipping -and- sticking...

Ngày tải lên: 11/09/2015, 10:04

... expected to help the self- assembly of the polymers The length of the alkyl chain and position of the alkyl chain on the mesogenic units appears to have significant effect on the self- assembly Besides ... Waals interactions, and geometrial effects were incorporated on the mesogens attached to the polymer backbone to control the self- assembly of polymer chains in the lattice DSC and POM results show ... chains in the lateral position on the rigid core exert hindrance to self- assembly whereas the pyrimidine groups stabilized the self- assembly of jacketed polymers A series of novel jacketed liquid...

Ngày tải lên: 16/09/2015, 17:11

... refractometer HPLC system and Waters Styragel HR 4E columns using THF as eluent and polystyrene as standard UV and fluorescence spectra were performed on a HP 8452A spectrophotometer and SHIMDZU RF 500 ... (Ar, C=C stretching), 1268, 1150, 1020 (C-O-C stretching) 5.2.4 Molecular weight measurement The molecular weights of polymer 3a, 3b and 3c were determined using GPC with solutions of polymers in ... average (Mw) molecular weight and polydispersity (PD) of polymers Polymer Mn Mw PD 3a 0.60 × 104 1.71 × 104 2.9 3b 0.81 × 104 2.26 × 104 2.7 3c 0.51 × 104 1.16 × 104 2.2 5.2.3 Techniques and methods...

Ngày tải lên: 16/09/2015, 17:11

... formation of supramolecular structures through self- assembly process Self- assembled materials formed by the noncovalent bonds have attracted much interest owing to easy synthesis and high processibility ... pyrimidine groups and alkyl sulfonic acid and investigate their self- assembling properties in the solid state 114 4.2 Experimental section 4.2.1 Materials and reagents All reagents and solvents were ... side-chain, and network structures, have been prepared by the self- organization of polymers and small molecules The noncovalent interactions play a key role in the formation of assembled structures, and...

Ngày tải lên: 16/09/2015, 17:11

... chains and rigid units may be insignificant and the full polymer chain adopts a cylindrical geometry, whereas, in P2C10 and P1-C10, the backbone and mesogenic units form the rigid core and the ... temperatures of P1-C4 and P1-C10 decrease to 64.8 °C and 24.8 °C, respectively Similarly, P2-C1 shows a glass transition at 63.1 °C whereas the Tgs of P2-C4 and P2-C10 decrease to 20.4 and –19.7 ºC It ... mixture was degassed once more and heated to 100 °C for 48 h in argon atmosphere, cooled to RT, and filtered The liquid layer was separated with a separation funnel, and the aqueous layer was extracted...

Ngày tải lên: 16/09/2015, 17:11

... region and a broad peak at 2θ = 7.52 and 20.2°, from which a d spacing of 11.8 and 4.4 Å is derived For P02 and P04, the diffraction patterns only exhibit one broad peak at 2θ = 20.1o and 20.2 o, and ... pyrimidine functional groups and the alkyl chains on the self- assembly of the jacketed polymer It is interesting to compare the self- assembly of polymer P01, P02, P03 and P04 based on the results ... of 35.9Å, 30.6 Å and 18.0 Å are derived It also offers a sharp reflection in the middle angle region and a broad halo at 2θ = 7.42 and 19.9 °, from which d spacings of 11.9 Å and 4.5 Å are derived...

Ngày tải lên: 16/09/2015, 17:11

... cavities of inorganic clay and sieves2-3, or self- assembly methods to develop nanostructured materials Self- assembly of molecules through non-covalent forces including hydrophobic and hydrophilic effects, ... films and fibers, and molecular devices The Schluter group16 have reported the synthesis of poly(p-phenylene) substituted with monodendron side groups, in which the main chain is rigid and of ... der Waals interactions, and shape effects, to control the self- assembly of polymer chains in the lattice The novel polymers were characterized with GPC, DSC, TGA, FTIR, 35 and NMR This work show...

Ngày tải lên: 16/09/2015, 17:11

... blue and green The N-terminal S100-specific EF-hand (EF-hand 1) is shown in a dark colour, the C-terminal canonical EF-hand in a brighter colour (EF-hand 2) The hinges connecting both EF-hands ... these and other questions and will ultimately bring us to a higher level of understanding the biology of tumour and degeneration and enable to use our acquired knowledge of S100 structure and functions ... ª 2010 FEBS 4579 Natural and amyloid self- assembly of S100 proteins A Ca2+ G Fritz et al C E S100B HII HI S-100 EF-hand F S100A12 Ca2+ B D 90° HIV G HIII S100A8/A9 EF-hand Fig Structure of S100...

Ngày tải lên: 23/03/2014, 03:20

... not always the case that self- assembly of anisometric units and amphiphilic self- assembly enhance each other These two modes of self assembly can also be in competition and this can modify the ... possible molecular and supramolecular structures and the complex relations between molecular shape, nano-scale segregation, and symmetry of molecular packing leads to a large number of self assembled ... Crystal Self- Assembly Liquid crystals (LC) represent truly fascinating materials in terms of their properties, their importance for the fundamental understanding of molecular selfassembly, and their...

Ngày tải lên: 30/05/2014, 00:22

... topic in recent material research fields [14-16] Self- assembly and/ or self- aggregation are fundamental mechanisms by which different nanoparticle assembly motifs or even close-packed periodic structures ... in the absorption band edge with increasing dopant concentration, and corresponding photoluminescence spectra show that Mn doping suppresses both near-band edge UV emission and defect-related ... nano/microstructures is crucial to their practical applications The fabrication of hierarchical and self- assembly (self- aggregation) micro-/nanostructures using nanoparticles, nanorods, nanoplatelets,...

Ngày tải lên: 20/06/2014, 20:20

... hydrogen bonding for directed self- assembly and achieved a trilayered supramolecular array formed between 1,2-diaminoethane and benzoic acid Lee et al [97] have achieved self- assembly of 2,6-dimethylpyridine ... achieve further construction and miniaturization of electronic and optical devices Among guided self- assemblies, (a) template-guided self- assemblies and (b) field-guided self- assemblies are two broad ... self- organizing particles and a self- assembling matrix material can lead to hierarchically ordered structures Lin et al [51] has recently demonstrated (as shown in Fig 2) self- directed self- assembly...

Ngày tải lên: 21/06/2014, 17:20

... topic in recent material research fields [14-16] Self- assembly and/ or self- aggregation are fundamental mechanisms by which different nanoparticle assembly motifs or even close-packed periodic structures ... in the absorption band edge with increasing dopant concentration, and corresponding photoluminescence spectra show that Mn doping suppresses both near-band edge UV emission and defect-related ... nano/microstructures is crucial to their practical applications The fabrication of hierarchical and self- assembly (self- aggregation) micro-/nanostructures using nanoparticles, nanorods, nanoplatelets,...

Ngày tải lên: 21/06/2014, 17:20

... MT-based technologies (scaffolding and MT-templated selfassembly) as well as MT-based devices (biosensors, nano -machines) 123 Nanoscale Res Lett (2007) 2:135–143 Materials and methods Preparation of ... development of both nano -machines and MT-templated self- assembly technology Finally, the results presented here also point at a strong specific interaction between HOPG surface and MTs in solution ... transfer on a substrate We thus investigated MT physisorption, self- assembly and combing as a way to create ordered MT templates for further assembly at the nano-scale We only considered MTs stabilized...

Ngày tải lên: 22/06/2014, 18:20

... MT-based technologies (scaffolding and MT-templated selfassembly) as well as MT-based devices (biosensors, nano -machines) 123 Nanoscale Res Lett (2007) 2:135–143 Materials and methods Preparation of ... development of both nano -machines and MT-templated self- assembly technology Finally, the results presented here also point at a strong specific interaction between HOPG surface and MTs in solution ... transfer on a substrate We thus investigated MT physisorption, self- assembly and combing as a way to create ordered MT templates for further assembly at the nano-scale We only considered MTs stabilized...

Ngày tải lên: 22/06/2014, 22:20