Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 48 for “"optical activity"”.
-
Optical Activity of Heme Proteins
Made available in DSpace on 2014-12-09T17:36:48Z (GMT). No. of bitstreams: 1 7020980.pdf: 4514168 bytes, checksum: a60db275abc5a904f1eeaaef57d9023a (MD5) Previous issue date: 1970
-
Optical Activity and Electronic Spectra of L-Cyclohexanediamine Complexes
Made available in DSpace on 2014-12-09T17:35:42Z (GMT). No. of bitstreams: 1 6706757.pdf: 2899918 bytes, checksum: 5325a5ad50a0220fcb79bc8a44f552fe (MD5) Previous issue date: 1966
-
Laser-based optical activity detector for high performance liquid chromatography
… based on the rotation of polarized light by optically active molecules. One can make use of the presence or absence of optical activity, the sign of the optical rotation, as well as the wavelength dependence of the rotation, to aid in the identification of peaks. The working system is based …
-
Crystal Spectra and Optical Activity of Transition Metal Compounds With Trigonal Symmetry
Made available in DSpace on 2014-12-09T17:35:04Z (GMT). No. of bitstreams: 1 6503610.pdf: 4520079 bytes, checksum: 52d7ba6b8bf4ee0895b9c6a6e55b847d (MD5) Previous issue date: 1964
-
Theoretical Simulations of Optical Rotation and Raman Optical Activity of Molecules in Solution
<p>Chiroptical spectroscopic techniques such as optical rotation (OR), electronic circular dichroism (ECD), and Raman optical activity (ROA) provide the means to probe molecular dissymmetry, which is the arrangement of atoms that is not superimposable on its mirror image. However, the application …
-
Modeling and Numerical Approximations of Optical Activity in the Chemical Oxygen-Iodine Laser
… a partial differential equation model describing optical behavior in the COIL. Optical behavior of the COIL has traditionally been investigated via a ray tracing method. Photons are represented as discrete particles, and their behavior is described by the geometry of the system. We develop an …
-
Self-Assembled Nanoantenna Enhance Optical Activity and Transport in Scalable Thin Films and Interfaces
… and ordered arrangements are advanced herein for optical and thermal enhancements in scalable thin film. An analytical approach to estimating the thermal dynamics of random arrangements of nanoantenna resulted in estimates within 30% across a range of geometric parameters, nanoantenna-containing …
-
Optically Active Metamaterials Made of Plasmonic Nanoparticles and Chitin Nanocrystals
… the macroscopic scale in order to achieve strong optical activity is important for many scientific disciplines from chemistry to material science and physics. This thesis work aimed to develop by self-assembly optically active metamaterials composed of plasmonic nanoparticles embedded in a …
-
Synthesis and kinetic studies of tricyclic phosphates and phosphonates: Effect of phosphorus-oxide stereochemistry on allylic rearrangements
… for solvolysis (k$\sb{\rm s}$) and loss of optical activity (k$\sb\alpha$) were measured for 12a and 12b under solvolytic conditions (30% D$\sb2$O/70% acetone-d$\sb6$, 25$\sp\circ$C). For phosphate 12a, k$\sb\alpha$/k$\sb{\rm s}$ = 1.7 while for 12b, k$\sb\alpha$/k$\sb{\rm s}$ = 1. …
-
Probing Plasmon-Molecules Interactions with Surface-enhanced Raman Spectroscopy: Towards the Guided Design of Plasmonic Photocatalysts
… candidacy as photocatalysts with their unique optical properties and strong interactions with light. The possibility of driving chemical reactions with sunlight to achieve high efficiency and selectivity has driven a lot of research exploring plasmonic photocatalysts. However, the progress has …
-
Towards a carbon nanotube antibody sensor
… nanotube (SWNT)/polymer-protein A complexes for optically reporting antibody concentration via a change in near infrared fluorescent emission after antibody binding. SWNT have potential as biosensors because of extraordinary sensitivity, lack of photobleaching, and optical activity in a …
-
The Effect Of Stationary UV Excitation On The Optical Behavior Of Electrochemically Self-Assembled Semiconductor Nanowires
In this work, we investigate the optical response of the semiconductor quantum wire array when excited by stationary UV light. The array is synthesized by selectively electro-depositing the semiconductor material in electrochemically self-assembled porous alumina templates. Our studies are based on …
-
The rheology of silicon nanoparticle inks fro screen printing electronic devices
… The printed layers showed electrical and optical activity.
-
A study of the molecular behavior in the vibronic and excitonic properties of silicon nanoparticles
… for the testing of these models through various optical techniques. Raman spectroscopy measurements, performed on 1 nrn silicon nanoparticles suspended in liquid, were found to agree well with vibrational modes calculated using Hartree-Fock theory through the GAMESS package. The Raman peaks offer …
-
Finite-Difference and Analytic-Gradient Approaches for Simulating Vibrational Circular Dichroism Using Second-Order Møller-Plesset Perturbation Theory and Configuration Interaction
… effects of the choice of basis set on two chiroptical properties including VCD and Raman optical activity (ROA) with a particular emphasis on property-oriented basis sets. Next, we introduce a finite-difference scheme for computing the atomic axial tensor (AAT), a required quantity for VCD …
-
Effect of size and surface structure manipulation on the luminescent properties of silicon nanoclusters
… for other single bonded species. The observed optical activity of silicon nanoclusters makes them an important material for a variety of scientific applications.
-
Total synthesis of macrocyclic bisbibenzyl natural products
… planarity. The natural product also exhibits optical activity despite containing no chiral centres, this being due to axial and planar chirality in the molecule. Herein, routes to these two natural products are presented. Key steps include a highly chemoselective hydrogenation and a Wittig …
Page 1 of 3