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Showing 1 to 20 of 26 for “"cinnamate"”.
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Photo-reactive Surfactant and Macromolecular Supramolecular Structures
… resulted in higher peel values and rates of cinnamate photo-reactivity with increasing urethane concentration. Random copolymers of poly(n-butyl acrylate (nBA)-co-2-hydroxyethyl methacrylate (HEMA)) were functionalized with hydrogen bonding and photo-reactive groups to explore the …
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Synthesis and Characterization of Tailored Photoactive Macromolecules
Coumarin and cinnamate derivatives were positioned as either polymer chain ends or side groups to synthesize photoactive macromolecules and gain the ability to reversibly control molecular weight and crosslink density using UV light. The cinnamates and coumarins were reacted onto the polymers via …
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Studies of Biomacromolecule Adsorption and Activity at Solid Surfaces by Surface Plasmon Resonance and Quartz Crystal Microbalance with Dissipation Monitoring
… of ~ 105 N·m-2. Adsorption of pullulan 3-methoxycinnamates (P3MC) and pullulan 4-chlorocinnamates (P4CC) with different degrees of cinnamate substitution (DSCinn) onto cellulose, cellulose acetate propionate (CAP), poly(L-lactic acid) (PLLA), and methyl-terminated self-assembled monolayer …
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Generation And Statistical Modeling Of Active Protein Chimeras: A Sequence Based Approach
… library of chimeric proteins between A. thaliana cinnamate 4-hydroxylase (AtC4H) and S. moellendorffii cinnamate 4-hydroxylase (SmC4H) reveal a possible stabilizing effect of the N-terminal amino acids from SmC4H and, irreplaceable catalytic domains between AtC4H and SmC4H. I also show gene …
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Studies in Asymmetric Catalysis. Part I. Lewis Base-Catalyzed Aldol Additions. Part II. Bis(oxazoline)palladium(ii)-Catalyzed Cyclopropanation
… and tested in the cyclopropanation of ethyl (E)-cinnamate with diazomethane. Although an enantioselective process was never realized, effects of substitution on the ligand, catalyst loading studies, and other investigations led to a mechanistic proposal wherein partial or complete ligand …
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Synthesis of corn-derived carbohydrate derivatives as effective multifunctional sunscreen
… As part of our ongoing studies on isosorbide-cinnamate derivatives, this work have found they have great promise as multifunctional sunscreens, based on the isosorbide molecule as a carrier and the cinnamate group's UV absorption. In this study, a series of isosorbide derived UVB and UVA …
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Enabling integration of vapor-deposited polymer thin films
… The first vapor-phase synthesis of poly(vinyl cinnamate) was also demonstrated. The cross-linking density of this polymer increases upon exposure to ultraviolet light and is readily quantifiable. Vinyl cinnamate was incorporated into a copolymer with N-isopropylacrylamide, yielding a …
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Studies of polysaccharide adsorption onto model cellulose surfaces and self-assembled monolayers by surface plasmon resonance spectroscopy
… properties of pullulan (P) and pullulan cinnamates (PCs), 2-hydroxypropyltrimethylammonium xylans (HPMAXs), and hydroxypropyl xylans (HPXs). Hydrophobic modification of pullulan with cinnamate groups promoted adsorption onto model surfaces of regenerated cellulose. In order to understand …
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Adsorption Studies of Polysaccharides and Phospholipids Onto Cellulose
… monolayers on gold. The adsorption of pullulan cinnamate (PC) onto cellulose surfaces increased with increasing degree of cinnamate substitution. The interactions between PCs with higher degree of substitution (DS) and porous nanocrystalline cellulose (NC) films presumably generated looped …
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Thiophene-based photoresponsive mesogens
… For comparative purposes, the non-heterocyclic cinnamate counterparts (Series III) were also prepared and are reported. All one hundred and thirty final esters are mesomorphic, exhibiting the nematic phase alone. The mesomorphic properties are dependent upon the disposition of the terminal …
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Some aspects of free radical polymerisation in UV-curing
… were also investigated.Some mixed acrylate-cinnamate systems were prepared to investigate a new dual cure system.The conversion percentage was found to be very low.The lack of cure is probably due to the cinnamates are scavenging the benzoyl radicals.
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Functionalized Polyisobutylene: From Synthesis to Properties and Applications
… by chemical modification of IIR backbones with cinnamate moieties. The physical and mechanical properties of the resulting UV-cured IIR polymers were studied.
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Aroma characterization of American rye whiskey by chemical and sensory assays
… 2560 ppm (3-methyl-1-butanol) to 7 ppb (ethyl cinnamate). In addition, acetaldehyde was identified as a key odorant, and quantified using external standardization. Finally, model solutions based on the quantification were constructed and compared to authentic whiskey samples using a difference …
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Development of Stimulus-Responsive Ligands for the Modulation of Copper and Iron Coordination
… a novel synthetic route for functionalized cis-cinnamate esters. BCQ uses a novel masking strategy to trigger a 90-fold increase in fluorescence emission, along with the release of a desired chelator, in the presence of hydrogen peroxide.</p>
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Site-Isolation, Intramolecular Energy Transfer, and Crosslinking in Synthetic Dendritic Quinacridones
… ether) dendrimers containing photocrosslinkable cinnamate groups at the periphery and quinacridone cores were synthesized. Thin films of the higher generation dendrimers were photopolymerized via ultraviolet irradiation. The films were resistant to solvent after the polymerization step indicating …
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All-Inkjet-Printed Low-Voltage Organic Thin-Film Transistors
… investigated and confirmed, including polyvinyl cinnamate as the dielectric, 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene as the semiconductor, and anisole as the solvent for semiconductor inks. Based on the investigation of different materials, the characteristics and parameters of …
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Synthesis and Characterization of Responsive Poly(Alkyl Methacrylate) Topologies
… and modified with photoactive functional groups. Cinnamate functionalized PSAs underwent photocrosslinking under UV light, leading to significant losses in 180° peel strengths. The acrylate functionalized PSAs were mixed with a photoinitiator, and following crosslinking under visible light, these …
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Synthesis, physico-chemical properties and potential applications of colloidal gel particles
… poly(Nisopropylacrylamide-co-5% vinyl cinnamate) microgels were deposited on different solid surfaces to produce new environmental responsive surfaces. The mass of microgel particles deposited on glass pre-treated with acid, glass pre-treated with base, quartz, stainless steel, gold and …
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Self-Healing of Open-Circuit Faults in Organic Thin-Film Transistor-Based Flexible Electronics
… as the semiconductor, poly (vinyl cinnamate) (PVC) as the dielectric, silver as the electrodes, and CYTOP as the encapsulation. Based on this device, two basic circuits: the current mirror and the common-source (CS) amplifier have been successfully built on flexible substrates. The …
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The Effect of Pre-fermentation Fining & Other Post-harvest Manipulations on Sauvignon blanc Aroma
… (p < 0.05) increase in ethyl (dihydro)cinnamate as well as benzyl alcohol as a result of G fining was also noted. Sensory analysis showed a Green veg aroma to help distinguish between wines as well as other attributes such as Floral honey aroma, Floral/honey taste, and Salty aftertaste. …
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