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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 208 for “"chromophore"”.
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Chromophore-Matrix Interaction in Organic Semiconductors
… Farbträger) bezeichnet. Die Interaktion von Chromophoren mit der umgebenden Matrix aus gleichen oder anderen Molekülen ist von zentraler Bedeutung für das Verständnis organischer Halbleiter und damit der Verbesserung von Bauteilen aus diesen Materialien. In der vorliegenden Arbeit werden neue …
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A thermally stabilized fluorescent organic chromophore
<p>A fluorescent chromophore, hereby designated as cyanine dye, has been bound to generated zinc oxide nanoparticles. It has been shown that the material not only retains the characteristic absorption peak of the native chromophore, but it also continues to fluoresce with comparable intensity. The …
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Exciton Dynamics in DNA-Chromophore Assemblies
… it has been challenging to emulate multi-chromophore organization in synthetic systems. Towards mimicking these nat- ural architectures, we use DNA-chromophore assemblies to generate excitonic circuits with nanometer-scale precision over chromophore placement and orientation. First, in a …
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Quantitative Analytic Studies on Some Methine-Chromophore Chelation Reagents
Made available in DSpace on 2014-12-05T19:36:36Z (GMT). No. of bitstreams: 1 0023293.pdf: 5599263 bytes, checksum: d12e290103d6df9324df15bfa5c6bf7e (MD5) Previous issue date: 1957
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The Electronic Excited States of Green Fluorescent Protein Chromophore Models
… approximations to the excited states of model chromophores of the green fluorescent protein of A. victoria. We calculate several low-lying states by several methods of quantum chemical calculation, including state-averaged complete active space SCF (CASSCF) methods, time dependent density …
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Exploring Structure Function Relationship using Bio-Inspired DNA-Chromophore Complexes
… adopt a DNA-based framework to scaffold cyanine chromophores in order to construct modularizable photonic circuit components. This framework allows nanoscale precision over the control of excitons and their dynamics, which is a prerequisite for the implementation of large scale molecular …
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Synthesis and electrochemistry of photoantimicrobial agents based on the azine chromophore
Photodynamic Therapy (PDT) is a ôancer treatment involving selective retention of a photoactive drug in tumour cells and tissue. Subsequent illumination with light of the correct wavelength can result in tumour destruction, generally assumed to be mediated by singlet oxygen ( 102) generated by the …
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Chromophore Arrays Based on Rigid Dendritic, Hyperbranched and Tetrahedrally Branched Architectures
… four rigid arms incorporating anthracene chromophores were synthesized. Amorphous and luminescent properties of these compounds were characterized by thermal analysis and fluorescence spectroscopy.
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Pyrene Butyric-Protein Conjugates: A New Fluorescent Chromophore for Protein Studies
Made available in DSpace on 2014-12-09T17:35:51Z (GMT). No. of bitstreams: 1 6801792.pdf: 5545890 bytes, checksum: 5e9fd82892913b4eeb3da47107ec4d83 (MD5) Previous issue date: 1967
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The role of chromophore on pulsed laser ablation of biological tissue
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Studying and controlling chromophore orientation in polyelectrolyte layer-by-layer thin films
… solutions was varied to observe its effect on chromophore orientation. Chromophore orientation was measured by FTIR and UV/isible spectroscopy.
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Fabrication of a luminescent solar concentrator that minimizes self-absorption losses using inter-chromophore energy transfer
… light using the luminescent properties of chromophores embedded in a waveguide. This method of concentration alleviates the need for expensive tracking equipment necessary for optical concentration. Combined with the low cost and flexible fabrication of organic materials, this technology is …
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Tuning the Photophysical and Biological Properties of a Series of Ruthenium-Based Chromophores and Chromophore Coupled Cisplatin Analogs with Substituted Terpyridine Ligands
… terpyridine containing ruthenium-based chromophores and chromophore coupled cisplatin analogs. The coupling of a light absorbing unit to a bioactive site offers the potential for developing supramolecules with multifunctional interactions with DNA and other biomolecules. A series of …
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Tuning the ground and excited state properties of a series of polymetallic tridentate complexes incorporating Ru(II) or Os(II) as the chromophore
… properties. A series of ruthenium monometallic chromophore complexes has been prepared varying the ligands coordinated on the metal center. The systematic alteration of the ligands has enhanced the understanding of the electrochemical and spectroscopic properties of ruthenium polypyridyl …
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The photophysics of fluorescent protein chromophores
… Surprisingly this diversity originates from chromophores which have very similar structures. Accordingly, minor changes to the chromophore structure or to its surroundings in the protein can produce dramatic changes in optical behaviour. In this work the photophysics of the chromophores of …
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Exploring the interaction between asymmetric phosphonates and acetylcholinesterase. Probing the gorge and P-site via customized covalent modification
… 1) to show how covalent modification of AChEs by chromophore-linked OPs can be used to probe the active and peripheral sites of the protein and its local environment; 2) to differentiate AChE stereoselectivity with asymmetric phosphonothiolates.</P> <P>Click chemistry was used as a key …
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Exploring the interaction between asymmetric phosphonates and acetylcholinesterase. Probing the gorge and P-site via customized covalent modification
… 1) to show how covalent modification of AChEs by chromophore-linked OPs can be used to probe the active and peripheral sites of the protein and its local environment; 2) to differentiate AChE stereoselectivity with asymmetric phosphonothiolates.</P> <P>Click chemistry was used as a key …
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Nonlinear Optical Properties and Structural Characteristics of Ionically Self-Assembled Nanoscale Polymer Films Influenced by Ionic Concentration and Incorporation of Monomer Chromophores
… result in significant cancellation of the chromophore orientations. This cancellation occurs by two mechanisms: competitive orientation due to the ionic bonding of the polymer chromophore with the subsequent polycation layer, and random orientation of the chromophores within the bulk of …
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Solid-state NMR investigations of the bacteriorhodopsin photocycle
… into transfers between the Schiff base of the chromophore and the cytoplasmic and extracellular half-channels. Critical to pump function is the switch in accessibility between the two half-channels. Models of the accessibility switch invoke protein or chromophore structural changes. This thesis …
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