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Full-Text Articles in Physical Sciences and Mathematics
Preparation And Characterization Of Light Sensitive Tetrafluoro-Lambda6-Sulfanyl-Containing Polymers, Kelly A. Bonetti
Preparation And Characterization Of Light Sensitive Tetrafluoro-Lambda6-Sulfanyl-Containing Polymers, Kelly A. Bonetti
Legacy Theses & Dissertations (2009 - 2024)
The addition of the pentafluorosulfanyl (SF5) group to an unsaturated organic starting material became popular in the 1960s, following the widening commercial availability of SF5Cl and SF5Br. However, the free radical reaction conditions required limited a broader appreciation of this critical advance. Moreover, while important thermal, photochemical and free-radical initiated addition reactions were reported, the unique photosensitivity of these compounds was not well understood. In 2012, a scalable synthetic route was developed affording aryl-SF5-containing derivatives via a novel aryl-SF4Cl intermediate. As a result, a heightened interest in hypervalent fluorinated sulfur containing materials was renewed. In 2014, the visible light addition …
Synthesis And Characterization Of Mpims : Metallopolymers Of Intrinsic Microporosity, Kelly Walter
Synthesis And Characterization Of Mpims : Metallopolymers Of Intrinsic Microporosity, Kelly Walter
Legacy Theses & Dissertations (2009 - 2024)
Polymers of intrinsic microporosity (PIMs) are class of polymers known for high surface areas arising from their contorted and rigid backbone structures. While high surface area compounds are applicable in many fields, simultaneous solubility and conductivity in PIMs is still lacking. In general, the monomeric units that form the backbone, necessary to yield inefficient polymer strand packing and contortion, also break conjugation in the along the polymer backbone and therefore limit conductivity. It has been previously noted that extended conjugation and the addition of metal atoms (along the backbone) increases conductivity. We therefore sought to use a strategy whereby the …
Initiated Chemical Vapor Deposition (Icvd) Polymer Thin Films : Structure-Property Effects On Thermal Degradation And Adhesion, Vijay Jain Bharamaiah Jeevendrakumar
Initiated Chemical Vapor Deposition (Icvd) Polymer Thin Films : Structure-Property Effects On Thermal Degradation And Adhesion, Vijay Jain Bharamaiah Jeevendrakumar
Legacy Theses & Dissertations (2009 - 2024)
Opportunities and challenges for chemical vapor deposition (CVD) of polymer thin films stems from their applications in electronics, sensors, and adhesives with demands for control over film composition, conformity and stability. Initiated chemical vapor deposition (iCVD) is a subset of the CVD technique that conjoins bulk free-radical polymerization chemistry with gas-phase processing. The novelty of iCVD technique stems from the use of an initiator that can be activated at low energies (150 – 300 °C) to react with surface adsorbed monomer to form a polymer film. This reduces risk for potential unwarranted side-reactions.