• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 191
  • 34
  • 16
  • 12
  • 6
  • 4
  • 4
  • 3
  • 3
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 348
  • 348
  • 121
  • 41
  • 38
  • 32
  • 29
  • 27
  • 27
  • 27
  • 26
  • 25
  • 22
  • 21
  • 19
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Formation of supramolecular structures in aqueous solution and their interactions with surfaces

Saulzet, Sylvie Isabelle January 1999 (has links)
No description available.
12

Computational analysis of intramolecular interactions in proteins

McDonald, Ian Kevin January 1996 (has links)
No description available.
13

New chemistry of icosahedral carborane derivatives

Hibbert, Thomas Gibson January 1997 (has links)
No description available.
14

Generation-independent dimerization behavior of quadruple hydrogen bond-containing oligo(benzyl ether) dendrons.

January 2006 (has links)
Wong Chun Ho. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (leaves 72-77). / Abstracts in English and Chinese. / Contents --- p.i / Acknowledgments --- p.iii / Abstract --- p.iv / Abbreviations and acronyms --- p.vi / Publications originated from the work of this thesis --- p.viii / Chapter Chapter 1 - --- Dendritic Macromolecules and Dendronized Polymers / Chapter 1.1 --- Introduction to Dendrimers and Dendronized Polymers --- p.1 / Chapter 1.2 --- Overview of the Synthesis of Dendronized Polymers --- p.4 / Chapter 1.2.1 --- Graft-from Approach --- p.4 / Chapter 1.2.2 --- Graft-to Approach --- p.5 / Chapter 1.2.3 --- Macromonomer Approach --- p.6 / Chapter 1.2.3.1 --- Step Growth Polymerization --- p.6 / Chapter 1.2.3.2 --- Chain Growth Polymerization --- p.8 / Chapter 1.2.3.3 --- Supramolecular Polymerization --- p.9 / Chapter Chapter 2 - --- En Route to Hydrogen Bond-Mediated. Supramolecular Dendronized Polymers / Chapter 2.1 --- Design of Supramolecular Dendronized Polymers --- p.15 / Chapter 2.1.1 --- Binding Modes in Supramolecular Polymers --- p.15 / Chapter 2.1.1.1 --- Hetero-Complementary Polymerization --- p.16 / Chapter 2.1.1.2 --- Self-Complementary Polymerization --- p.17 / Chapter 2.1.2 --- The Effect of Binding Constant on the Degrees of Polymerization --- p.18 / Chapter 2.1.3 --- The Effect of Dimerization Constant on the Molecular Weight Distribution --- p.21 / Chapter 2.1.4 --- The Dendritic Effect on the UPy Binding Behavior --- p.21 / Chapter 2.2 --- Summary --- p.24 / Chapter Chapter 3 - --- "Design, Synthesis, and Structural Characterization of Dendronized Dimers" / Chapter 3.1 --- Design of Dendronized Dimers --- p.25 / Chapter 3.1.1 --- The Nature of R and R on the Dimerization Behavior --- p.25 / Chapter 3.1.2 --- Selection of Dendrons --- p.26 / Chapter 3.1.3 --- Positioning of Dendrons and the Synthetic Feasibility --- p.27 / Chapter 3.2 --- Synthesis of Dendronized Dimers --- p.28 / Chapter 3.3 --- Characterizations of the Intermediates and Target Dimers --- p.31 / Chapter 3.3.1 --- 1H NMR Spectroscopy --- p.31 / Chapter 3.3.2 --- 13C NMR Spectroscopy --- p.38 / Chapter 3.3.3 --- Mass Spectrometry --- p.41 / Chapter 3.3.4 --- Vapor Pressure Osmometry --- p.43 / Chapter 3.3.5 --- Infrared Spectroscopy --- p.43 / Chapter 3.3.6 --- Gel Permeation Chromatography --- p.44 / Chapter 3.4 --- Conclusions --- p.46 / Chapter Chapter 4 - --- Determination of Dimerization Constants / Chapter 4.1 --- Overview of the Self-Assembling Process in UPy System --- p.47 / Chapter 4.2 --- Determination of the Dimerization Constants (Kdim*) --- p.49 / Chapter 4.2.1 --- Dimerization Constants in CDCl3 at 25 °C --- p.50 / Chapter 4.2.2 --- Dimerization Constants in 10% (v/v) DMSO-d6/CDCl3 at 25 °C --- p.53 / Chapter 4.2.3 --- Dimerization Constants in CDCl3 at 50 °C --- p.56 / Chapter 4.3 --- Heterodimerization Experiment --- p.56 / Chapter 4.4 --- Conclusions --- p.57 / Chapter Chapter 5 - --- Experimental Procedures / Chapter 5.1 --- General Information --- p.60 / Chapter 5.2 --- General Synthetic Procedures --- p.61 / Chapter 5.3 --- Experimental Procedures --- p.62 / References --- p.72 / Appendix / NMR Spectra --- p.78 / GPC results --- p.119
15

DFT study of three-centered hydrogen bond in DNA base pairs.

January 2005 (has links)
Chiu Lai Fan. / Thesis submitted in: December 2004. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (leaves [74-77]). / Abstracts in English and Chinese. / ABSTRACT (ENGLISH) --- p.iii / ABSTRACT (CHINESE) --- p.v / ACKNOWLEDGMENTS --- p.vi / TABLE OF CONTENTS --- p.vii / LIST OF FIGURES --- p.ix / LIST OF TABLES --- p.xi / LIST OF SYMBOLS --- p.xiii / Chapter CHAPTER ONE --- INTRODUCTION AND BACKGROUND --- p.1 / Chapter 1.1 --- Introduction --- p.1 / Chapter 1.2 --- The nature of hydrogen bonding interactions --- p.2 / Chapter 1.3 --- Evidences of hydrogen bonding interactions --- p.4 / Chapter 1.4 --- Three-centered hydrogen bond --- p.4 / Chapter 1.4.1 --- Literature review of three-centered H-bonds --- p.6 / Chapter 1.4.2 --- Review of three-centered H-bonds characterization --- p.8 / Chapter 1.5 --- Cooperative effect --- p.12 / Chapter 1.6 --- Scope of thesis --- p.13 / Chapter CHAPTER TWO --- THEORY AND METHODOLOGY --- p.15 / Chapter 2.1 --- Introduction --- p.15 / Chapter 2.2 --- Theory --- p.16 / Chapter 2.2.1 --- Density Functional Theory (DFT) --- p.16 / Chapter 2.2.2 --- Natural Bonding Orbital Theory (NBO) --- p.19 / Chapter 2.2.3 --- Spin-Spin coupling constants --- p.22 / Chapter 2.2.4 --- Wiberg Bond Index --- p.24 / Chapter 2.3 --- Methodology --- p.25 / Chapter CHAPTER THREE --- RESULTS AND DISCUSSION --- p.32 / Chapter 3.1 --- The nature of three-centered hydrogen bond interaction --- p.32 / Chapter 3.1.1 --- Geometries --- p.32 / Chapter 3.1.2 --- Natural bond orbital analysis - Donor-acceptor interactions --- p.41 / Chapter 3.1.3 --- Spin-Spin coupling across the hydrogen bonds --- p.46 / Chapter 3.1.4 --- Wiberg bond index --- p.51 / Chapter 3.1.5 --- Proton transfer -Hydrogen bond strengths on the effect of remote proton transfer --- p.53 / Chapter 3.1.6 --- Cooperactive character in hydrogen bonding clusters --- p.65 / Chapter CHAPTER FOUR --- CONCLUSING REMARKS --- p.71 / REFERENCES / APPENDIX
16

Sequence context effect on base pairing modes of T·T mismatches.

January 2011 (has links)
He, Guoyun. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2011. / Includes bibliographical references (leaves 62-69). / Abstracts in English and Chinese. / Title Page --- p.i / Abstract (English Version) --- p.iv / Abstract (Chinese Version) --- p.v / Acknowledgement --- p.vi / List of Tables --- p.ix / List of Figures --- p.x / List of Abbreviations and Symbols --- p.xii / Chapter Chapter One: --- Introduction --- p.1 / Chapter 1.1 --- Mismatches in DNA Duplex --- p.1 / Chapter 1.2 --- T.T Mismatches in DNA Duplex --- p.5 / Chapter 1.3 --- Purpose of the Work --- p.7 / Chapter 1.4 --- DNA Structure --- p.7 / Chapter 1.4.1 --- Structure and Nomenclature of Nucleotide --- p.7 / Chapter 1.4.2 --- Base Pairing --- p.8 / Chapter 1.4.3 --- Double Helical DNA Conformation --- p.9 / Chapter Chapter Two: --- Materials and Methods --- p.10 / Chapter 2.1 --- Sample Design --- p.10 / Chapter 2.2 --- Sample Preparation --- p.11 / Chapter 2.3 --- NMR Study --- p.11 / Chapter 2.3.1 --- Non-labile Proton Resonance Assignment --- p.12 / Chapter 2.3.2 --- Labile Proton Resonance Assignment in Normal Base Pairs --- p.13 / Chapter 2.3.3 --- Method to Determine T.T Pairing Mode --- p.14 / Chapter Chapter Three: --- Determination of T.T Pairing Mode --- p.16 / Chapter 3.1 --- NMR Resonance Assignment --- p.16 / Chapter 3.2 --- Result --- p.18 / Chapter 3.2.1 --- Preferential Pairing Mode: W --- p.18 / Chapter 3.2.2 --- Preferential Pairing Mode: W --- p.19 / Chapter 3.2.3 --- Exchanging and Pairing Modes --- p.20 / Chapter 3.3 --- Discussion --- p.23 / Chapter 3.3.1 --- Patterns of T.T Pairing Mode --- p.23 / Chapter 3.3.2 --- Reason for Preferential Pairing Mode --- p.24 / Chapter 3.3.3 --- Temperature Effect on T.T Pairing Mode --- p.26 / Chapter Chapter Four: --- Conclusions and Future Works --- p.29 / Chapter Appendix I: --- NOESY and WATERGATER-NOESY Assignment --- p.30 / Chapter Appendix II: --- Chemical Shifts of XTY --- p.46 / References --- p.62
17

Vibrational sum-frequency spectroscopic investigations of hydrogen-bonding interactions at the vapor/water interface /

Raymond, Elizabeth A., January 2003 (has links)
Thesis (Ph. D.)--University of Oregon, 2003. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 140-147). Also available for download via the World Wide Web; free to University of Oregon users.
18

Graph invariants a tool to analyze hydrogen bonding in ice and water clusters /

Kuo, Jer-Lai, January 2003 (has links)
Thesis (Ph. D)--Ohio State University, 2003. / Title from first page of PDF file. Document formatted into pages; contains xiv, 108 p.: ill. (some col.). Includes abstract and vita. Advisor: Sherwin J. Singer, Dept. of Chemistry. Includes bibliographical references (p. 100-108).
19

H-bond directed self-assembly of oligomeric molecular strands and hydrogen mediated rhodium-catalyzed reductive cyclization of 1,6-enynes

Gong, Hegui 28 August 2008 (has links)
Not available / text
20

Intermolecular and intramolecular hydrogen bonding in 8-quinolinol and 2-methyl-8-quinolinol

Swartz, William Richard, 1945- January 1969 (has links)
No description available.

Page generated in 0.0472 seconds