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 11 of 11 for “"Electrochromism"”.
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Electrochromism of Transition Metal Phthalocyanine Thin Films
Thin films (500-4500 (ANGSTROM) thick) of Fe(II), Co(II), Ni(II), and Cu(II), and Zn(II) phthalocyanines on gold or indium oxide electrodes undergo stoichiometric oxidation and rereduction. Excepting FePc and CoPc, the process is essentially reversible. Chronocoulometry showed that ZnPc films …
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Engineering the electrochromism and ion conduction of layer-by-layer assembled films
This work applies the processing technique of layer-by-layer (LBL) assembly to the creation and development of new electrochemically active materials. Elements of the thin-film electrochromic cell were chosen as a particular focus for LBL fabrication. Layer-by-layer assembly is the ideal processing …
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The synthesis and testing of fast switching, novel conjugated polymers for electrochromic applications
… the past decade, significant progress in polymer electrochromism has shown many organic electroactive polymers to have the potential to satisfy the above consumer demands. Electrochromic materials (EC) have the ability to undergo a reversible colour transformation switch upon electrochemical …
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Pyrrolopyrrole-Based Materials for High-Contrast Electrochromics
… that will be useful in applications such as electrochromism is unknown. Motivated to exploit the synthetic simplicity and tailorability of DHPPs, a family of DHPP chromophores was synthesized to probe how functionality and connectivity influence fundamental optoelectronic processes, such as …
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Automated small molecule synthesis for accelerated discovery of photo- and electroactive organic materials
… of viologen pairs for transparent-to-black/grey electrochromism. In this way, time-dependent density functional theory (TDDFT) -guided method was used to design new viologen pairs to overcome limitations in using single viologen molecules for broadband visible absorption. A curated library of 950 …
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PUSH-PULL COPOLYMERS IN THIN FILM FOR ELECTRONIC APPLICATION
… for electronic applications in several areas as electrochromism, solar cells and sensors. Electrochemical synthesis was employed to synthesize copolymers composed of acceptor (A) N,N -bis(2-octyldodecyl)-2,6-bis(5-(thioph-2-yl)thiophen-2-yl)naphthalene-1,4,5,8-bis(dicarboximide) (s-NDI2ODT4) and …
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Fabrication, characterisation, and optical applications of electrochemically deposited nanostructured IrOx films
… surface was investigated to test whether the electrochromism of the nanostructured IrOx film could be used to alter the surface plasmons of the nanostructured substrate. The nanostructured IrOx film worked as a surface plasmon modulator when its colours shifted between dark and transparent …
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Conjugated Polymer Brushes (Poly(3-hexylthiophene) brushes): new electro- and photo-active molecular architectures
… polymer films produced show solvatochromism and electrochromism, as well as the previous two methods. After polymerization, the next step towards building organic electronic devices is applying the methods obtained in nano- and microscale production. Block copolymers constitute an attractive …
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Investigating the interfacial process and bulk electrode chemistry in tungsten oxide electrochromic materials
The growing need for high-performance electrode materials in electrochemical conversion and storage applications requires further fundamental investigation on the working and degradation mechanisms of these materials. Among various functional materials, transition metal oxides are still one of the …
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Fabrication and Characterization of Layer by Layer Assembled Single and Dual-Electrochrome Electrochromic Devices
This thesis presents applications of the layer-by-layer (LbL) assembly technique in fabrication of thin films with a primary focus on design and development of electrochromic devices. The optical properties of electrochromic materials change as they alter between redox states. The morphology and …