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Showing 1 to 19 of 19 for “"Perylene Diimide"”.
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Precursors for perylene diimide dendrimers : synthesis and photophysics
Perylene dyes are photostable and have been used in a variety of applications. However they often display aggregation effects in the solution phase, leading to concentration-dependent electroluminescent (EL) quenching, band broadening, and/or a bathochromic shift. These phenomena not only affect …
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Perylene Diimide Molecular Glass: Investigations of Charge Transport
… using a known electron transport material, perylene diimide, and attaching it to a molecular glass in order to allow the material to be solution processed. Devices were made using a simple metal-semiconductor-metal structure and electrodes were selected to produce Schottky diodes. …
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Porphyrin Arrays and Perylene Diimide as Molecular Spintronic Components
… propagation, and relaxation behaviors in perylene diimide derivatives, meso-to-meso acetylene-bridged multi[zinc(II) porphyrin] and [copper(II) porphyrin] oligomers. Chapter one discusses a background about molecular spintronics of highly conjugated molecular wires and perylene diimide …
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Development of iron (III) tetra(meso-aryl)porphyrins and N-annulated perylene diimide tethered rhenium (I) bipyridine supramolecular dyads for carbon dioxide conversion catalysis
… Three investigates a series of N-annulated perylene diimide tethered rhenium bipyridine dyads. The N-annulated perylene diimide groups were elucidated to act as a second-sphere electron-reservoir for rhenium bipyridine catalyst, where the preferred electrocatalytic pathway was governed by …
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Modifying electronic and solid-state properties of fullerenes, polycyclic aromatic hydrocarbons, and perylene diimides
… chapter focuses on developing a new series of perylene diimide acceptors and their use in organic photovoltaic active layers. Perylene diimides with previously unknown substitution patterns were synthesized with CF3 and CN groups and then isolated to isomeric purity using HPLC. Substituting …
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DIRECT REAL-TIME REAL-SPACE IMAGING OF ENERGY TRANSPORT IN ORGANIC SEMI-CONDUCTORS
… and a lateral heterojunction formed between a perylene diimide (PDI) and pentacene. Through femtosecond transient absorption microscopy (with sub-10 fs temporal and sub-10 nm spatial precision), supplemented by various other experiments and modelling, we show that ultrafast energy transport in …
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Dimension Controlled Self-Assembly of Perylene Based Molecules
… in the synthesis and self-assembly of n-type perylene based organic semiconducting molecules into highly organized materials. Perylene based molecules used in this study are perylene diimide (PTCDI, two side-chains), perylene mono imide (m-PTCI, one side-chain), perylene tetracarboxylic acid …
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Thermo-Reversible Gelation Of Rod-Coil and Coil-Rod-Coil Molecules Based on Perylene Diimides
… the physical gelation of covalently attached perylene diimide (PDI) polymers during their self-assembly. With the gelators used, chain entanglement and network formation trap the solvent causing gelation. Hence, forces such as hydrogen bonding are not a requirement. We first describe the …
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Excited State Dynamics of Dyes Bound to Nanocrystals
… ZnO NCs. Chapter 4 studies the aggregation of a perylene diimide (PDI) derivative bound to ZnO NCs. The surface coverage of the system was altered by changing the PDI:ZnO NC ratio to understand the organization of the molecules on the surface as a function of surface loading. Chapter 5 studies …
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Probing Exciton Dynamics in Metal–Organic Frameworks
… of excitonic coupling strength in a series of perylene diimide (PDI)-based MOF-74 analogs with different metal ions (Mn2+, Ni2+, Zn2+). A correlation between the excitonic coupling strength and the metal ions’ polarizability points to the inorganic moieties’ potential role in mediating the …
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Synthesis and applications of core functional hyperbranched polyglycerol
… the water solubility of the insoluble but stable perylene diimide dye. The second method uses polyglycerol not as a steric barrier, but as a scaffold to covalently link fluorescent dyes to antifading agents. The results show that the co-localization of the dye and antifading agents due to the …
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Remote plasma assisted fabrication of functional organic and hybrid thin films and supported nanostructures
… from metalloporphyrin, metallophthalocyanine and perylene diimide by plasma processing. The method also provides a template route for the synthesis of supported metal and metal oxide nanostructures by oxygen plasma treatments. In this way, Chapter 7 (¿Highly porous ZnO thin films and 1D …
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Molecular Encapsulation of Conjugated Polymers for Organic Electronics
… such as diketopyrrolopyrrole (DPP), naphthalene diimide (NDI) and perylene diimide (PDI). In the context of this work, the research is centered around narrow bandgap encapsulated conjugated polymers based on benzodithiophene (BDT). Consequently, this chapter delves into BDT-based conjugated …
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Forster Resonance Energy Transfer in materials used in Luminescent Solar Concentrators
… a molecular level insight into the behaviour of Perylene-based chromophoric arrays. It involves a detailed spectroscopic analysis of these molecules using time resolved techniques. It identifies competing processes that can reduce the efficiency of energy transfer and suggests, on ways to design …
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Charge Transfer at Metal Oxide/Organic Interfaces
… neutral and singly charged states of a modified perylene molecule were performed to provide insight into the orbitals of the initial and final states involved in the interfacial charge transfer process. The design and implementation of a novel UHV single molecule microscope is described. This …
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Dye-sensitized cobalt cubane: ultrafast photophysics probed by transient XUV spectroscopy
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Temperature-Dependent Supramolecular Remodeling of Poly-Ether Perylene Diimides
Within the past decade, perylene diimides (PDIs) have been regarded as a class of the most investigated organic dyes, particularly studied for their photophysical and supramolecular properties. The high versatility of PDIs enables a wide ranged use in practical applications from organic …
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LUMINESCENT COMPOUNDS FOR APPLICATIONS IN PHOTONICS
Luminescent compounds have seen a growing interest for the possibility to employ them for several applications, from energy conversion to the biomedical field, but also sensors, light-emitting devices, and many others. The variety of luminescent compounds is huge, and this offers a wide flexibility …
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Interactions of small molecules with duplex DNA and lesion containing G-quadruplex DNA
… designed and synthesized novel bifunctional perylene derivatives that can selectively bind to the telomeric DNA via G-quadruplex formation and subsequently react with OxodG in close proximity. These compounds have strong binding affinity towards G-quadruplex and can significantly stabilize …