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.
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Showing 1 to 20 of 172 for “"photophysical properties"”.
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Photophysical Properties of Emerging 2D Materials
… of materials through optical and optoelectronic properties of light under different environmental conditions and timescales. Recently, the integration of two-dimensional (2D) materials into nanostructure-based devices has played a vital role in enhancing physical and chemical properties, …
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Photophysical Properties of Anthracenic Metal Organic Frameworks
… Although MOFs retain the chemical and physical properties of their constituents, the properties of the MOF are often altered from those of its building blocks, making rational design and synthesis difficult. Anthracene is a polyaromatic hydrocarbon whose photophysical properties have been found …
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Synthesis, Self-Assembly and Photophysical Properties of Multichromophoric Systems
… interactions can be utilized to improve the photophysical properties and processes (e.g. transport of excitation energy) of the supramolecular aggregates. This thesis deals with the synthesis, the self-assembly and the investigation of photophysical properties of novel multichromophoric …
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Modeling the chemical and photophysical properties of gold complexes.
… computationally investigated, to probe their photophysical, geometric, and bonding properties. The geometry of AuI complexes (ground state singlet) is very sensitive to the electronic nature of the ligands: σ-donors gave a two-coordinate, linear shape; however, σ-acceptors yielded a …
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Strategies to Optimize Photophysical Properties in Cyclometalated Iridium Complexes
… the synthesis, structural characterization, and photophysical properties of several new iridium-based complexes. The research is divided into six sections, each contributing to our understanding of the versatile applications and unique characteristics of these compounds. Chapter 1 provides an …
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Tuning the photophysical properties of amidophosphine complexes of copper
… that allow for the tuning of the emission properties is reported. Luminescence lifetimes up to 150 [mu]s are observed in benzene solution at ambient temperature, which are comparable to the lifetimes of the longest-lived previously reported copper luminophores. These complexes also exhibit …
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Theoretical Investigations of the Photophysical Properties of Chromophoric Metal-Organic Frameworks
… has highlighted the potential to improve the photophysical properties of PP-based SURMOFs by (i) introducing various functional groups or metal ions to the PP-core and (ii) controlling the PP-stacking behavior in layered materials. To overcome the posed shortcomings of the PP-MOF prototype PV …
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Photophysical properties of pyrene, 2,7 diazapyrene and 1,3-bis(β-naphthyl)propane.
The luminescence properties of Van Der Waals' dimers and clusters of pyrene and diazapyrene have been investigated. Excimers, dimeric species which are associative in an excited electronic state and dissociative in their ground state, have long been established and play an important role in many …
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Lanthanide complexes of phthalimide and phthalamate containing ligands: synthesis, photophysical properties and their potential applications
Molecular sensors and switches have made important contributions to biomedical devices and molecular computational operations. There are numerous molecular designs using a fluorophore linked through a spacer group to a receptor(s), with a wide dynamic range, directional precision, target …
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New luminescent iridium (III) complexes containing NCN cyclometallated ligands: synthesis, photophysical properties and emission tuning
The luminescence properties of cyclometallated iridium(III) complexes render them of interest, for example, as phosphorescent dopants in organic light-emitting devices (OLEDs), as photoactive units in solar energy conversion, and as biosensors. The vast majority comprise three bidentate ligands, …
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The Synthesis and Photophysical Properties of New Polymetallic Complexes Designed for Use in Photoinitiated Electron Collection
The goal of this research was to develop stereochemically defined multimetallic systems for use as light absorbers and electron donor / light absorber dyads in photoinitiated electron transfer and electron collection. The basis for the stereochemical control was provided by the symmetric bridging …
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Structural Influences on the Photochemistry and Photophysical Properties of p-Phenylene Ethynylenes: Aggregation Effects and Solvent Interactions
… years due to their solubility in water, sensing properties, and biocidal activity against bacteria, viruses, and fungi. A series of oligomers based on these polymers were synthesized (OPEs), and several interesting questions about their photophysical and biocidal properties were raised by earlier …
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The Spectroscopic Characterization Of Newly Developed Emissive Materials And The Effects Of Environment On Their Photophysical Properties
… energy conversion. The characterization of the photophysical properties of new molecular systems for these applications has become critical in the design and development of these materials. Many molecular building blocks have been developed and understanding the properties of these molecules at …
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Pyrrolo[2,3-d]pyrimidine-based π-conjugated fluorophores with 1,2,3-triazole and ethynyl linkers: synthesis and photophysical properties /
… and 1,2,3-triazole linkers and to evaluate their photophysical properties. Novel chromophores - 2,4-bis(4-aryl-1,2,3-triazol-1-yl)pyrrolo[2,3-d]pyrimidines were prepared by CuAAC reaction. It was demonstrated that in the CuAAC reaction of 2,4-diazidopyrrolo[2,3-d]pyrimidine along with …
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The Synthesis of Functionalized Glycosides: Coordination Chemistry, Antiparasitic Activity, Precursors to Conformationally Constrained Macrocyclic Architectures and Photophysical Properties
… glycosides and the investigation of their properties. This included the study of their ability to form metal complexes and the study of the antiparasitic activity of both the free glycosides and metal complexes, the use of glycosides to serve as precursors to conformationally constrained …
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Probing the Redox and Photophysical Properties of Ru(II)-Pt(II) Supramolecular Complexes as Efficient Photodynamic Therapy Agents
… motif were synthesized and their redox, photophysical, and photochemical properties studied. Subsequently the application of the Ru(II)-Pt(II) bimetallic complexes in light activated DNA modification and cytotoxicity were evaluated. The supramolecular design entails covalently coupling an …
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Next generation multi-color carbon dots: A comprehensive understanding of their photophysical properties and subsequent use for biomedical applications
… the past decade owing to their strong optical properties, water solubility, excellent biocompatibility, and easy synthetic procedures. These remarkable properties of CDs have resulted in utilizing them for a wide variety of biomedical application ranging from bioimaging, cell labeling, drug …
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