Synthesis and fine tuning the emission properties of new amphiphilic conjugated polymers
Synthesis and fine tuning the emission properties of new amphiphilic conjugated polymers
... xxii List of Schemes Scheme 2-1 Synthesis of polymers 201a-c 78 Scheme 3-1 Synthesis of polymers 301 and 302 99 Scheme 3-2 Synthesis of polymer 303 100 Scheme 4-1 Synthesis of polymers 401 and 402 ... Absorption maxima of non-hydroxyl-containing 172 conjugated polymers TG curves of 301-403 178 xi Summary SYNTHESIS AND FINE- TUNING THE EMISSION PROPERTIES OF NEW AMPHIPHILIC CONJUGATED POLYMERS By ... SYNTHESIS AND FINE- TUNING THE EMISSION PROPERTIES OF NEW AMPHIPHILIC CONJUGATED POLYMERS CHINNAPPAN BASKAR (M.Sc., IIT MADRAS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY...
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Báo cáo hóa học: " The Role of Intrinsic and Surface States on the Emission Properties of Colloidal CdSe and CdSe/ZnS Quantum Dots Giovanni Morello Æ Marco Anni Æ Pantaleo Davide Cozzoli " potx
... 60 ps and 450 ps, respectively, and from surface states with lifetime of 9–10 ns The contribution of surface states to the PL is considerably reduced after inorganic passivation of the CdSe core ... light of these results we can associate the transitions |1i and |2i to carrier recombination from ± 1U and ± 1L states and the transition |3i to a surface states emission By analysing the temperature ... Discussion In Fig 1A the temporal evolution of CdSe/ ZnS QDs PL spectra is shown The spectra consist of three emission peaks evolving in time The blue peak |1i evolution is the fastest (see Fig 1A) and...
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Báo cáo khoa học: The importance of polymerization and galloylation for the antiproliferative properties of procyanidin-rich natural extracts doc
... investigated the relationship of different structural factors of procyanidins, such as the mean degree of polymerization and percentage of galloylation, with their antiproliferative potential and their ... potent antioxidant and chemopreventive agent [21,22] These and other results suggest that the galloylation of catechins and the presence of gallocatechin moieties in natural extracts could be ... development of effective and safe agents for the prevention and treatment of cancer remains inefficient and costly, and falls short of the requirements for primary prevention among the high-risk...
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Báo cáo Y học: Effect of ibuprofen and warfarin on the allosteric properties of haem– human serum albumin A spectroscopic study potx
... extended conformation Remarkably, ibuprofen, a nonsteroidal anti-inflammatory agent [12], and warfarin, an anticoagulant drug [12], are considered as stereotypical ligands for Sudlow’s site II and Sudlow’s ... HSA inhibits ibuprofen and warfarin association to the warfarin primary cleft (i.e Sudlow’s site I), corresponding to the ibuprofen secondary site [1,3,11] Then, ibuprofen and warfarin impair ... may reflect a conformational transition(s) towards a ferric HSA –haem state where slowly exchanging water molecules are far apart from the paramagnetic centre On the other hand, the lifetime of...
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Báo cáo hóa học: " Tuning the electronic properties of boron nitride nanotube by mechanical uni-axial deformation: a DFT study" docx
... obvious that besides the size and shape of nanomaterials, the electronic properties can be further Page of 11 adjusted by applying the mechanical deformation Since BNNTs have some material properties ... increase under the larger strain However, the BO of the B-N bond parallel to the axial becomes smaller at larger strains The increase and decrease in the BO values for the slanted and parallel ... performed the data analyze YCW drafted the manuscript and participated in its design SPJ participated in the design of the study and conceived of the study All authors read and approved the final manuscript...
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Báo cáo hóa học: " Effect of Purity and Substrate on Field Emission Properties of Multi-walled Carbon Nanotubes" pdf
... layer porous carbon paper which consists of a macroporous layer of carbon fiber paper (SGL, Germany) and a microporous layer of carbon black powder and a hydrophobic agent The carbon black powder ... enhances an intimate electronic contact between the CNTs and the macroporous carbon paper The graphitized carbon paper was prepared by deposition of a mixture of carbon black and poly-tetrafluoroethylene ... 2:331–336 powders onto carbon paper in combination with a subsequent rolling process For the fabrication of field emission arrays of randomly oriented as-grown MWNT over carbon paper, as-grown...
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synthesis, electrical measurement, and field emission properties of a-fe2o3 nanowires
... consisted of the a-Fe2O3 Fig The I–V characteristics of (a) the ITO /a-Fe2O3 film /a-Fe2O3 NW/ CAFM-tip structure and (b) the ITO /a-Fe2O3 film /CAFM-tip structure Fig The CAFM images of (a) morphology and ... 108 NWs/cm2 123 332 Fig (a) TEM image of an a-Fe2O3 NW, (b) HR-TEM image of the a-Fe2O3 nanowire, and the SAED pattern of the a-Fe2O3 NW (inset) for sample C, and 18.3 108 NWs/cm2 for sample D Table ... resistivity of an a-Fe2O3 NW, and L and r represent the average length (800 nm) and radius (15 nm) of the NW, respectively We assumed that q (4.42 103 Xcm) is a constant for all of the as-produced a-Fe2O3...
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Báo cáo hóa học: " On the Morphology, Structure and Field Emission Properties of Silver-Tetracyanoquinodimethane Nanostructures" pptx
... that the emission area in this high field region not changed, and the stability of field emission is high The slopes and intercedes of these plots in the high field region are the same, showing the ... AlQ3 Conclusions In conclusion, the field emission properties for Ag-TCNQ nanostructured array were dependent on the structure and morphology determined by the reaction temperature and the initial ... dependence on the other growth conditions are first studied in detail Figure shows the characteristics of emission current density versus applied field for them grown under the reaction temperature of...
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Báo cáo hóa học: " Synthesis, Electrical Measurement, and Field Emission Properties of a-Fe2O3 Nanowires" potx
... consisted of the a-Fe2O3 Fig The I–V characteristics of (a) the ITO /a-Fe2O3 film /a-Fe2O3 NW/ CAFM-tip structure and (b) the ITO /a-Fe2O3 film /CAFM-tip structure Fig The CAFM images of (a) morphology and ... 108 NWs/cm2 123 332 Fig (a) TEM image of an a-Fe2O3 NW, (b) HR-TEM image of the a-Fe2O3 nanowire, and the SAED pattern of the a-Fe2O3 NW (inset) for sample C, and 18.3 108 NWs/cm2 for sample D Table ... resistivity of an a-Fe2O3 NW, and L and r represent the average length (800 nm) and radius (15 nm) of the NW, respectively We assumed that q (4.42 103 Xcm) is a constant for all of the as-produced a-Fe2O3...
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Raman spectroscopy and field electron emission properties of aligned silicon nanowire arrays
... field electron emission is one of the most important and promising applications of nanoscale tubes or wires with sharp tip arrays For field electron emission devices, the desired tip diameter of ... diameter of 40 nm The phonon quantum confinement effects of the SiNW arrays were confirmed through the downshifting, broadening and asymmetry of the first-order Raman peak A good field electron emission ... is in units of a, with a being the lattice constant of silicon and o(q) represents the phonon dispersion curve G0 is the geometrical sum of the inverse lifetime of zone center phonon and there...
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Báo cáo khoa học: Studies on the regulatory properties of the pterin cofactor and dopamine bound at the active site of human phenylalanine hydroxylase pptx
... of phosphorylation rate seen at the concentration x of H4biopterin vo is the rate in the absence of H4biopterin and vmin is the rate at very high concentrations of H4biopterin The observed Hill ... H4biopterin, the oxidized cofactor H2biopterin and the catecholamine inhibitor dopamine From Fig 3A it is seen that on preincubation with saturating concentrations (Fig 3B) of the biopterin cofactors ... binding changes the position and orientation (relative to the catalytic iron) and the hydrogenbonding network of the bound H4biopterin Moreover, the substrate induced repositioning of the cofactor also...
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Báo cáo Y học: The Fe-only nitrogenase and the Mo nitrogenase from Rhodobacter capsulatus A comparative study on the redox properties of the metal clusters present in the dinitrogenase components doc
... signal The intensity of this signal strongly varied from preparation to preparation A decrease in specific activity was always accompanied by an increase in signal intensity, suggesting that the ... characterization of the Fe-only nitrogenase isolated from R capsulatus, which included a detailed comparison with the Mo- containing nitrogenase from the same organism, showed that: (a) the Fe nitrogenase ... performed as described by Schneider et al [8] In view of the difficulty in separating the dinitrogenase (Rc 1Mo) and dinitrogenase reductase component (Rc 2Mo) of the Mo nitrogenase from R capsulatus by...
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Báo cáo khoa học: On peptide bond formation, translocation, nascent protein progression and the regulatory properties of ribosomes ppt
... linkage on the severe restriction of the space available for the passage of nascent proteins through the tunnel by the swung conformation of L22; on the conservation of the L22 double-hook; and on the ... functional relevance Analysis of the properties of this region illuminated a unified mechanism for the formation of the peptide bond, the translocation of the tRNA molecules and the entrance of nascent ... may control the elongation of nascent chains The common sequence dependence of the elongation arrest, the existence of arrest-suppression mutations that should affect L22 conformation, and the...
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báo cáo hóa học: " Measuring adolescents'''' HRQoL via self reports and parent proxy reports: an evaluation of the psychometric properties of both versions of the KINDL-R instrument" pdf
... invariance across the self- report and the parent- report versions Both versions displayed convergent and discriminant validity and known-groups validity Neither the parent- report version nor the self- report ... compare the internal consistency of item responses, factorial validity and invariance and the convergent and known-groups validity of the child-report version and the parent- report version of the KINDL-R ... structure between the child self- report and the parent proxy- report versions of an oral health quality of life measure A study by le Coq [13] found less random variance in the parent reports and higher...
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