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.
Results
Showing 1 to 20 of 20 for “"DDQ"”.
-
Optical absorption and electrical conductivity of electron acceptor doped poly-3-octylthiophene films
… 2,3-dichloro-5,6-dicyano-l,4-benzoquinone (DDQ) and 7,7,8,8-tetracyanoquinodimethane (TCNQ); and with the inorganic electron acceptor, ferric chloride (FeCl{dollar}\sb3{dollar}). Charge transfer was observed in P3OT solutions doped with FeCl{dollar}\sb3{dollar} and DDQ. TCNQ-doped solutions …
-
Test generation and evaluation for bridging faults in CMOS VLSI circuits
… automatic test pattern generator for I$\sb{DDQ}$ current testing of CMOS digital circuits is presented. The complete two-line bridging fault set is considered. Because of the time constraints of I$\sb{DDQ}$ testing, an adaptive genetic algorithm (GA) is used to generate compact test sets.
-
Performance of an AGI-aspiring system & narrow-AI approaches : a systematic comparison
… previously tested on a double deep Q network (DDQ) and an actor-critic (AC). ONA was found to vastly outperform the narrow-AI learners in proficiency and learning speed, but could not handle one variable being random or its actions being swapped. The results indicate that the DDQ is the most …
-
Part I: Circular dichroism studies of optically active charge transfer complexes. Part II: vapor phase and solvent dependence circular dichroism studies of some terpenes, α-phenylethanol, and α-phenylethylamine
… (CT) spectra of the achiral acceptors TCNE, DDQ, and Vitamin K<sub>3</sub> with chiral donors such as terpenes, steroids and β-phenylethylamine derivatives in methylene chloride at 27° were investigated. A new transition not attributable to either component alone, but due to a CT complex was …
-
Beiträge zur Synthese von Modellsystemen des heterobicyclischen Grundgerüstes der Saragossasäuren/Squalestatine sowie methodische Untersuchungen zur chemoselektiven mono-Debenzylierung von N,N-Dibenzylaminen und katalytischen enantioselektiven Ringöffnung von meso-Epoxiden
… mit Cer(IV)ammoniumnitrat (CAN) und DDQ untersucht. In diesem Kontext konnte eine neue, sehr schonende, Methodik zur chemoselektiven mono-Debenzylierung tertiärer N,N-Dibenzylamine erarbeitet werden. Im letzten Teil der Arbeit wurden zwei neue, verbrückte Heterobimetall-Katalysatoren …
-
Investigation of synthetic methods for preparation of 2<sup>o</sup>-amino derivatives of 5-amino- 1, 10-phenanthroline: Applications to Cu<sup>+2</sup> based impedance sensors
… and alkylation of 5-aphen with the PPh3/DDQ system.</p>
-
SPECTROSCOPIC, IMAGING, AND DOPING STUDIES OF PUSH-PULL CONJUGATED POLYMER SOLAR CELLS
… 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and F4-TCNQ are investigated with absorption and Raman spectroscopies in an effort to better understand the reasons behind these performance enhancements and the preferential interactions between these dopant molecules and the PCPDTBT backbone. …
-
Untersuchung der Variabilität des atmosphärischen Methanhaushalts hochpolarer Breiten anhand eines regionalen Trajektorienmodells und der Messung stabiler Isotope
… mittleren Quelle zu d13CQ = (-53.9 ± 0.7) ‰ bzw. dDQ = (-275 ± 23) ‰ bestimmen. Ein anhaltender Langzeittrend in beiden stabilen Isotopen zeigt, dass sich die Isotope im Gegensatz zur Konzentration noch nicht im Quell-Senken-Gleichgewicht befinden.
-
A cost quality model for CMOS IC design
… to extract a realistic circuit fault list, I<sub>DDQ</sub> test generation techniques to generate tests for these faults, statistical models to reduce computational overhead due to test generation and fault simulation, yield simulation tools, and mathematical models to estimate test quality and …
-
The effect of social support and quality of life on attitudes towards drinking in a population of older adults.
… the Desire for Drugs Questionnaire- Revised (DDQ-R), the Life Satisfaction Index- Form A (LSI-A), the Alcohol Effects Questionnaire (AEFQ), and the Shortened Social Support Questionnaire (SSQ). The main objective of this study was to advance knowledge into the relationships between alcohol …
-
Nitrosoarenes: magnetic anisotropy, donor-acceptor bonding and host-guest chemistry
… as 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and tetracyanoethylene (TCNE). Finally, encapsulation of N,N-dimethyl-4-nitrosobenzene (DMANB) and p-nitrosocumene (p-NC) by organic host molecules such as octa-acid (OA), cucurbit[7]uril (CB7), and cyclodextrins (?,?,?-cd) in aqueous solution …
-
Isolierung und Synthese von chinoiden Naturstoffen und Strukturberechnungen an verbrückten 1,1´-Binaphthylen
… mit 2,3-Dichlor-5,6-dicyano-p-benzochinon (DDQ) gewonnen werden kann.
-
Carbazole-based porous organic polymers for photocatalytic hydrogen evolution
… formation. If a strong organic oxidant like DDQ is applied, further polymerization on a single carbazole group is possible. Depending on the amount and reaction time a polymer with higher rigidity and improved CO2 gas uptake results. Avoiding any metal-based oxidative agent, the dimer coupled …
-
SYNTHESIS OF CONJUGATED SMALL MOLECULES AND POLYMERS BY A PALLADIUM CATALYZED CYCLOPENTANNULATION STRATEGY – TOWARDS NEW ORGANIC SEMICONDUCTORS
… can be fully aromatized in a final step via a DDQ mediated dehydrogenation reaction. Photodegradation studies reveal the new 1,2,8,9-tetraphenyldicyclopenta[fg,qr]pentacene derivatives are more photostable than TIPS-pentacene, and possess narrow optical gaps of ~1.2 eV. Because anthradithophene …
-
Sex-Related Alcohol Expectancies And Perceptions Of Sexual Assault: Recognition Response Latency And Blame Attribution
… demographic factors (step 1), drinking habits (DDQ; step 2), alcohol context (step 3), AE (AEQ; step 4), and SRAE scores (AEQ SRAE subscale; step 5). Findings indicate that, for response latency, AE was the only variable which was a unique predictor. For victim blame, demographic variables, …
-
The study of the asymmetric synthesis of lignans
… cyclization of $\sp\prime$-demethylyatein, using DDQ as oxidant. Aryltetralin lignan 4$\sp\prime$-demethylisodeoxypodophyllotoxin was formed, as well as cis- and trans-benzylidenebenzylbutyrolactones, in good to excellent yield. 1-Arylnaphthalenes, prepared by aromatization of the Diels-Alder …
-
Nucleophilic aromatic substitution of metallabenzenes
… such as 2,3-dichloro-5,6- dicyanobenzoquinone (DDQ) to reform the starting cation 4 and 5. Employment of nucleophiles other than hydride, provided the potential for forming new substituted metallabenzene cations (C) after oxidation of metallacyclohexadiene intermediates (B). It was found that …
-
Synthesis of lignin-carbohydrate model compounds and neolignans
… complexes, chemical cleavage methods, DDQ oxidation and model compound/NMR methods. The synthesis of plant cell wall model compounds and neolignans are reviewed in Chapter 3. The experimental work performed for the completion of this thesis is described in Chapters 4-8. A method which …
-
Σύνθεση, αποτίμηση και μελέτη της σχέσης χημικής δομής βιολογικής δραστικότητας στο καρδιαγγειακό σύστημα, νέων τετραϋδροϊνδολικών παραγώγων
… υπό συνθήκες αφυδρογόνωσης με επίδραση DDQ. Εξαιτίας των πειραματικών συνθηκών που εφαρμόζονται για την παραλαβή των συνθετικών ενδιαμέσων, κρίθηκε απαραίτητη για την εξέλιξη του συνθετικού σχήματος η προστασία, προηγουμένως, του πυρρολικού αζώτου με την κατάλληλη ομάδα. Με στόχο τη …
-
Síntesis de compuestos organoselénicos derivados del hidroxitirosol. Determinación de su actividad como antioxidantes
… de las mismas con dicloro-diciano-quinona (DDQ). - Reacciones de aldehídos catalizadas por el sistema CeCl3.7H2O-NaI-SiO2 - Evaluación de las propiedades biológicas in vitro y ex vivo de los compuestos sintetizados. 2. Resultados y discusión 2.1. Síntesis de dopamina y derivados glicosilados …