Log in

Relevant bibliographies by topics / Achiral and chiral / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Achiral and chiral.

Dissertations / Theses on the topic 'Achiral and chiral'

Author: Grafiati

Published: 18 May 2024

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 48 dissertations / theses for your research on the topic 'Achiral and chiral.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Saeed, Mansoor. "Novel achiral and chiral derivatising reagents for indirect chiral resolution." Thesis, University of Sunderland, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260828.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Carlsson, Björn. "From achiral to chiral analysis of citalopram." Doctoral thesis, Linköpings universitet, Klinisk farmakologi, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5217.

Full text

Abstract:

Within the field of depression the “monoamine hypothesis” has been the leading theory to explain the biological basis of depression. This theory proposes that the biological basis of depression is due to a deficiency in one or more of three key neurotransmitter systems, namely noradrenaline, dopamine and serotonin which are thought to mediate the therapeutic actions of virtually every known antidepressant agent. Citalopram is a selective serotonin-reuptake inhibitor (SSRI) used for the treatment of depression and anxiety disorders. Citalopram is a racemic compound, in other words composed of a

APA, Harvard, Vancouver, ISO, and other styles

3

Carlsson, Björn. "From achiral to chiral analysis of citalopram /." Linköping : Univ, 2003. http://www.ep.liu.se/diss/med/07/93/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Gutierrez, Cuevas Karla Guadalupe Gutierrez. "LIQUID CRYSTALLINE NANOCOMPOSITES: FROM ACHIRAL TO CHIRAL SYSTEMS." Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1500998489695319.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Carter-Finch, Annabelle Suzanne. "The investigation of achiral and chiral separations by capillary electrochromatography." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327053.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Haldar, Sripada. "Investigation on some achiral and chiral mesogemic systems by different experimental techniques." Thesis, University of North Bengal, 2013. http://hdl.handle.net/123456789/1481.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Horcajada, Roberto. "Radical-anions of chiral and achiral 1,6-diaminophenazine derivatives as electrogenerated bases." Thesis, Queen Mary, University of London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.401860.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Fergusson, Kenneth Matthew. "The synthesis and properties of achiral and chiral bent-core liquid crystals." Thesis, University of Hull, 2008. http://hydra.hull.ac.uk/resources/hull:5810.

Full text

Abstract:

The area of liquid crystals has received substantial research effort over the last century, particularly when the beneficial applications such as Liquid Crystal Displays (LCDs) were realised and developed. For the majority of this time, it has been considered that a linear molecular shape is required in order to generate a mesomorphic phase. It was therefore of particular interest and excitement when, in 1996, it was shown that a 'banana-shaped' molecular architecture could exhibit a new class of liquid crystalline phase. Additionally it was found that these new mesophases exhibited chiral dom

APA, Harvard, Vancouver, ISO, and other styles

9

Morrison, Calum M. "Chiral and achiral analysis of benzodiazepine and anti-anginal drugs in forensic toxicology." Thesis, University of Glasgow, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321443.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Kiakos, K. "Molecular and cellular pharmacology of novel chiral and achiral CC-1065/duocarmycin analogues." Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1444902/.

Full text

Abstract:

CC-1065 and the duocarmycins are highly potent anticancer agents, exerting their biological activity through covalently reacting with adenine-N3 in the minor groove of AT-rich sequences. The alkylation properties and cytotoxicity of a series of novel chiral analogues are reported in this thesis. Structural modifications of established pharmacophores resulting in novel alkylating functionalities as well as variations of the DNA binding domain were introduced in the analogues considered, The sequence specificity of these compounds was assessed by a Taq Polymerase stop assay, identifying the site

APA, Harvard, Vancouver, ISO, and other styles

11

Lin, Haiping. "Simulations of chiral ordering of achiral molecules by Density Functional Theory and Monte Carlo." Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.490915.

Full text

Abstract:

The self-organization of organic molecules on metal surfaces can play a crucial role in various subjects of science such as electrochemistry and heterogeneous catalysis. However, their practical applications have been suffering from lack of atomic scale understanding of the ordering behavior. Theoretically, however, the description of the self-assembly processes has been limited by the inability of microscopic models to account for the interplay of all elementary processes at realistic temperatures and pressures. In this work, we take the succinate molecules and Cu(1IO) surface as a model syst

APA, Harvard, Vancouver, ISO, and other styles

12

Ronsin, Gaël. "Acylation d'un alcool achiral et d'un thiol chiral par le méthylphénylcétène : catalyse et sélectivité." Rouen, 1999. http://www.theses.fr/1999ROUES025.

Full text

Abstract:

Les cétènes prochiraux dérivés des acides 2-arylpropioniques sont des molécules très réactives et peu valorisées en synthèse énantiosélective. Notre étude présente les résultats en addition énantiosélective du méthanol sur le méthylphénylcétène. Différentes possibilités de catalyse asymétrique par des agents chiraux ont été testées, les dérivés d'alcaloïdes du quinquina et principalement les esters de quinine permettant d'induire les meilleures sélectivités. La température et l'ordre d'introduction des réactifs influencent la sélectivité de la réaction. Ainsi, le 2-phénylpropanoate de méthyle

APA, Harvard, Vancouver, ISO, and other styles

13

Sinha, Debashis. "X-Ray, Dielectric, and electro-optic studies on fluorinated achiral and chiral liquid crystals." Thesis, University of North Bengal, 2015. http://hdl.handle.net/123456789/2742.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Sayad, D., C. Zebiri, Issa T. Elfergani, Jonathan Rodriguez, Raed A. Abd-Alhameed, and F. Benabdelaziz. "Analysis of Chiral and Achiral Medium Based Coplanar Waveguide Using Improved Full Generalized Exponential Matrix Technique." RadioEngineering, 2020. http://hdl.handle.net/10454/18304.

Full text

Abstract:

Yes<br>In this work, an analytical study of the electromagnetic propagation in a complex medium-based suspended three-layer coplanar waveguide (CPW) is carried out. The study aims at a numerical calculation of the dominant hybrid mode complex propagation constant in the CPW printed on a bianisotropic substrate. The herein considered bianisotropy is characterized by full 3×3 tensors of permittivity, permeability and magnetoelectric parameters. The study is based on the numerical derivation of the Green's functions of such a complex medium in the spectral domain. The study is carried out using

APA, Harvard, Vancouver, ISO, and other styles

15

Zheng, Jie. "Development of Chiral/Achiral Analysis Methods using Capillary Electrochromatography and Capillary Electrochromatography Coupled to Mass Spectrometry." Digital Archive @ GSU, 2006. http://digitalarchive.gsu.edu/chemistry_diss/6.

Full text

Abstract:

The research presented in this dissertation involves the development of chiral and achiral analysis using capillary electrochromatography (CEC) and CEC coupled to mass spectrometry (CEC-MS). Chapter 1 briefly reviews CEC fundamentals and latest development on chiral CEC and CEC-MS. The CEC-UV enantioseparations for several acidic compounds are described in Chapter 2. The optimum resolutions for these acidic enantiomers are achieved in ion-suppression mode, i.e. with an acidic mobile phase. One of major drawback in coupling CEC with MS is the bubble formation at the column outlet end, resulting

APA, Harvard, Vancouver, ISO, and other styles

16

Reilly, John. "A comparison of electrophoretic and chromatographic separation techniques for the determination of chiral and achiral impurities." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270880.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Cao, Min. "Enantioselective Transformations Promoted by Cooperative Functions of an Achiral Lewis Acid and a Chiral Lewis Acid:." Thesis, Boston College, 2021. http://hdl.handle.net/2345/bc-ir:109203.

Full text

Abstract:

Thesis advisor: Masayuki Wasa<br>Thesis advisor: Amir H. Hoveyda<br>This dissertation describes the development of cooperative catalyst systems that contain an achiral Lewis acid and a chiral Lewis acid that may have overlapping functions but play their independent roles to promote enantioselective C–C bond formations. Chapter 1 provides a summary of recent advances made in the field of enantioselective cooperative catalysis that served as intellectual foundations for this dissertation research. As it will be discussed in the first chapter, key limitations of cooperative catalysis are: (1) und

APA, Harvard, Vancouver, ISO, and other styles

18

Ichikawa, Yoshitaka. "Synthesis of Optically Active Helical Polyacetylenes through Rhodium/Chiral Diene-Catalyzed Asymmetric Polymerization of Achiral Monomers." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/142579.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Barclay, Victoria K. H. "Development of LC-MS/MS Methods for the Analysis of Chiral and Achiral Pharmaceuticals and Metabolites in Aqueous Environmental Matrices." Doctoral thesis, Uppsala universitet, Avdelningen för analytisk farmaceutisk kemi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-171550.

Full text

Abstract:

This thesis describes the development of liquid chromatography tandem mass spectrometry (LC-MS/MS) methods for the trace analysis of active pharmaceutical ingredients (APIs) and their metabolites in aqueous environmental matrices. The research was focused on the development of chiral LC-MS/MS methods for the analysis of fluoxetine and metoprolol, as well as their chiral metabolites in environmental water samples. A method was also developed for the achiral compounds, diazepam and nordiazepam. The LC-MS/MS methods were validated by the use of the isotope-labeled compounds. As these isotope-labe

APA, Harvard, Vancouver, ISO, and other styles

20

Dang, Viet D. "Achiral and chiral analysis of polychlorinated biphenyls (PCBs) in the aquatic and riparian food webs in Twelve Mile Creek, South Carolina." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1202410243/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Chang, Yejin. "Enantioselective Transformations of α- and β-Amino C-H Bonds Promoted by Cooperative Actions of Achiral and Chiral Lewis Acid Catalysts:". Thesis, Boston College, 2021. http://hdl.handle.net/2345/bc-ir:109179.

Full text

Abstract:

Thesis advisor: Masayuki Wasa<br>Thesis advisor: Amir H. Hoveyda<br>This dissertation describes the development of cooperative catalyst systems for the regio- and enantio-selective α- and β-amino C-H functionalization of N-alkylamines, inspired by the concepts of frustrated Lewis pairs (FLPs). Prior to this dissertation research, the development of effective and broadly applicable catalytic protocol to transform amino C-H bonds with high enantioselectivity remained as a formidable problem. In Chapter 1, the recent advances in the field of amino C-H functionalization through hydride transfer pr

APA, Harvard, Vancouver, ISO, and other styles

22

Bagmare, S. "Synthesis and biophysical properties of nucleic acid analogues bearing 5-atom achiral amide and chiral D/L-amino acid- derived linkages." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2012. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2149.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

CATANI, Martina. "Mass transfer characteristics and thermodynamic properties of new generation porous particles for ultrafast, high-efficient separations in chiral and achiral liquid chromatography." Doctoral thesis, Università degli studi di Ferrara, 2018. http://hdl.handle.net/11392/2488045.

Full text

Abstract:

During the last years, there has been a continuous evolution in high performance liquid chromatography (HPLC) aimed at developing high efficient, selective and fast separation methods. One of the main factors affecting the efficiency of a separation is the type of adsorbent used to pack the column since both physico-chemical and geometrical characteristics of packing particles play a key role on column performance. The investigation of kinetic and thermodynamic properties of porous materials used as stationary phases in LC is of fundamental importance for future developments in column design a

APA, Harvard, Vancouver, ISO, and other styles

24

Sattar, A. K. "Catalytic transfer hydrogenation of organic functional groups using Ni, Ru complexes and asymmetric induction using racemic chiral and achiral ligands and synthetic applications." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2005. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2462.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Serhan, Zeinab. "Rmn du deuterium en abondance naturelle en milieu oriente chiral et achiral : une nouvelle approche analytique pour la détermination du fractionnement isotopique site-spécifique d'acides gras." Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112357.

Full text

Abstract:

La spectroscopie RMN 2D du deutérium en abondance naturelle (DAN) en utilisant les cristaux liquides chiraux comme solvant de RMN est une méthodologie efficace pour deux raisons: i) l’interaction quadrupolaire (interaction RMN sensible à l’ordre orientationnel des molécules et spécifique aux noyaux de spin I>1/2) n’est plus nulle en moyenne comme dans les liquides; ii) la chiralité du milieu permet de discriminer spectralement des énantiomères (molécule chirale) ou des directions énantiotopes (molécule prochirale). L'objectif principal de ce travail de Thèse était d'explorer le potentiel an

APA, Harvard, Vancouver, ISO, and other styles

26

Mohammad, Adil. "Achiral and chiral, C2-symmetric bicyclic guanidinates based on 1,5,7-triazabicyclo[4.4.0.]dec-5-ene as ligands in high- and mid-valent early transition metal chemistry." Diss., University of Iowa, 2010. https://ir.uiowa.edu/etd/714.

Full text

Abstract:

The syntheses of achiral and chiral, C2-symmetric bicyclic guanidine derivatives of 1,5,7-triazabicylo[4.4.0]dec-5-ene (hppH) are described. Quantum mechanical MO calculations based on Spartan were performed in order to study the effects (electronic and steric) of substituents on the basicity of hppH derivatives. These calculations showed that substituting only one methyl group on each carbon next to the bridgehead nitrogen of hppH gives high basicity. Based on these calculations, syntheses of achiral (hpp*H, with four methyl groups) and chiral C2-symmetric (hpp'H, with two methyl groups) deri

APA, Harvard, Vancouver, ISO, and other styles

27

Riddell, Nicole. "Packed Column Supercritical Fluid Chromatography : Applications in Environmental Chemistry." Doctoral thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-56826.

Full text

Abstract:

Although gas and liquid chromatography have emerged as dominant separation techniques in environmental analytical chemistry, these methods do not allow for the concurrent analysis of chemically diverse groups of persistent organic pollutants (POPs). There are also a small number of compounds which are not easily amenable to either of these traditional separation techniques. The main objective of this thesis was to address these issues by demonstrating the applicability of packed column supercritical fluid chromatography (pSFC) coupled to mass spectrometry (MS) in various aspects of environment

APA, Harvard, Vancouver, ISO, and other styles

28

Ehlert, Dennis K. "Chirale und achirale Liganden für die Fluoreszenzspektroskopie." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=95764468X.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Schierwater, Kathrin. "Chirale und achirale Lanthanoidorganyle mit funktionalisierten Alkoxidbrücken." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969985533.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Cui, Lingfei. "Antennes photoniques pour amplifier les interactions entre la lumière et la matière chirale." Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS392.

Full text

Abstract:

La détection de molécules chirales à l'aide de résonateurs plasmoniques est un domaine de recherche prometteur pour améliorer la sensibilité et la flexibilité de la détection. Cette approche vise à surmonter les limitations des méthodes conventionnelles, telles que la méthode chiroptique, qui présente des limitations en termes de sensibilité. Les résonateurs plasmoniques sont capables d'interagir de manière résonante avec la lumière, ce qui permet d'augmenter le couplage entre les molécules chirales et la lumière, tout en offrant un contrôle sur les propriétés de polarisation de la lumière. Le

APA, Harvard, Vancouver, ISO, and other styles

31

El, Abdioui Khalid. "Synthèse d'aminoacides d'intérêt biologique. Cyclopropanation de déhydroaminoesters par catalyse achirale et chirale." Montpellier 2, 1994. http://www.theses.fr/1994MON20105.

Full text

Abstract:

Le but de ce travail est la preparation d'alpha-aminoacides cyclopropaniques par addition de carbenoides, formes a partir de diazoacetates d'alkyle et de complexes de cuivre, sur des dehydro aminoesters n-proteges et d'explorer deux voies possibles d'induction asymetrique, soit par un substrat chiral, soit par catalyse chirale. Dans une partie bibliographique, nous presentons les methodes de synthese asymetrique de ces composes et les types de complexes chiraux des metaux de transition utilisables comme catalyseurs. Cette reaction de cyclopropanation realisee avec les catalyseurs que nous avon

APA, Harvard, Vancouver, ISO, and other styles

32

Scholtysek, Peggy [Verfasser], Alfred [Akademischer Betreuer] Blume, Jörg [Akademischer Betreuer] Kreßler, and Thomas [Akademischer Betreuer] Wolff. "Chirale und achirale Polymere in Wechselwirkung mit Phospholipid-Monolayern und -Bilayern / Peggy Scholtysek. Betreuer: Alfred Blume ; Jörg Kreßler ; Thomas Wolff." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2014. http://d-nb.info/106071745X/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Scowen, I. J., T. S. Alomar, T. Munshi, and Colin C. Seaton. "Structural similarity in chiral-achiral multi-component crystals." 2020. http://hdl.handle.net/10454/17783.

Full text

Abstract:

Yes<br>The creation of multi-component crystals between chiral and achiral components has gained increased interest in recent years. In many cases the overall crystal structure is similar with the creation of a pseudo-inversion centre in the enantiopure case. This allows for the formation of solid solutions between the two extremes, which may have applications within chiral resolution. Utilising a combination of database mining, computational prediction and experimental screening, the frequency of formation for such materials has been investigated showing that for co-crystals this occurs more

APA, Harvard, Vancouver, ISO, and other styles

34

Oliveira, Bárbara Luís de. "New sensors based on chiral and achiral coordination polymers." Master's thesis, 2018. http://hdl.handle.net/10451/34895.

Full text

Abstract:

Tese de mestrado em Química, apresentada à Universidade de Lisboa, através da Faculdade de Ciências, em 2018<br>A área dos materiais funcionais tem sido alvo de muita atenção por parte da comunidade científica nos últimos anos. Esta área abrange os campos da física, química supramolecular, química orgânica e inorgânica e química de coordenação. Estes materiais são estruturas (unidimensionais, bidimensionais ou tridimensionais) que têm de reunir mais do que uma propriedade e, como tal, a combinação de todas estas áreas da química, e da ciência em geral, é necessária, se não essencial. O trabalh

APA, Harvard, Vancouver, ISO, and other styles

35

Wang, SHIHAO. "Chirality Transfer from Chiral Solutes and Surfaces to Achiral Solvents: Insights from Molecular Dynamics Studies." Thesis, 2009. http://hdl.handle.net/1974/5202.

Full text

Abstract:

Chirality can be induced in achiral solvent molecules located near a chiral molecule or surface, but there have been very few systematic studies in this field either experimentally or theoretically. The focus of this thesis is to study the chirality transfer from chiral molecules to achiral solvents. To capture the chirality transfer in solvent molecules, a solvent model that is sensitive to the changes in the environment is needed. We developed new polarizable and flexible models based on an extensive series of ab initio calculations and molecular dynamics simulations. The models include e

APA, Harvard, Vancouver, ISO, and other styles

36

Venkatakrishnan, T. S. "Ruthenium Complexes Of Chiral And Achiral Phosphorus Ligands Based On The P-N-P Motif." Thesis, 2004. https://etd.iisc.ac.in/handle/2005/300.

Full text

Abstract:

In recent years there is an increasing awareness of the importance of chiral phosphorus ligands in transition metal organometallic chemistry because of the utility of such complexes in homogeneous catalytic reactions. This thesis deals with synthetic, spectroscopic and X-ray crystallographic studies on ruthenium complexes of chiral and achiral P-N-P type ligands, known as "diphosphazanes", with emphasis on ruthenium carbonyl clusters. Several ruthenium carbonyl clusters have been synthesized and characterized by elemental analyses, ER and NMR (lH, nC and 3lP) spectroscopic data. In several ins

APA, Harvard, Vancouver, ISO, and other styles

37

Venkatakrishnan, T. S. "Ruthenium Complexes Of Chiral And Achiral Phosphorus Ligands Based On The P-N-P Motif." Thesis, 2004. http://hdl.handle.net/2005/300.

Full text

Abstract:

In recent years there is an increasing awareness of the importance of chiral phosphorus ligands in transition metal organometallic chemistry because of the utility of such complexes in homogeneous catalytic reactions. This thesis deals with synthetic, spectroscopic and X-ray crystallographic studies on ruthenium complexes of chiral and achiral P-N-P type ligands, known as "diphosphazanes", with emphasis on ruthenium carbonyl clusters. Several ruthenium carbonyl clusters have been synthesized and characterized by elemental analyses, ER and NMR (lH, nC and 3lP) spectroscopic data. In several ins

APA, Harvard, Vancouver, ISO, and other styles

38

Díaz, Pérez Yrene Hortencia [Verfasser]. "New Phthalimide-based sensors for chiral and achiral anions and peroxides / vorgelegt von Yrene Hortencia Díaz Pérez." 2009. http://d-nb.info/1008304972/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Chou, Yi-Lin, and 鄒依凌. "Study on the Mesophases and Electro-optical Properties of New Chiral Liquid Crystals Possessing Achiral Alkenyl Chain and Semi-fluorinated group at Chiral Terminal Tail." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/33156431778260815131.

Full text

Abstract:

碩士<br>大同大學<br>化學工程學系(所)<br>98<br>There are many factors affect the properties of ferroelectric (SmC*) and antiferroelectric (SmCA*) liquid crystal phase such as chiral terminal group, rigid core, linking group, terminal chain length and optical purity. For these reasons, the purpose of this research work is an attempt to correlate the various core structures and achiral terminal groups to the formation of mesomorphic phases, especially ferroelectric and antiferroelectric phases in chiral liquid crystal materials. Thus, the chiral precursor, (S)-1-methyl-2-(2,2,3,3,4,4,4-heptafluorobutoxy) etha

APA, Harvard, Vancouver, ISO, and other styles

40

Lu, Yen-jung, and 盧燕蓉. "Establish an Analysis Method of Chiral and Achiral of Amphetamines and Ketamines by Capillary Electrophoresis, and Clinical Application." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/qwmw4w.

Full text

Abstract:

碩士<br>輔英科技大學<br>醫事技術系碩士班<br>96<br>Amphetamines are kinds of medicine that stimulates central nervous system, whereby ketamine has been assigned emerging abuses in the recent years. These two kinds of medicine were frequently mixed and abused by young ages. The analysis of chiral for the analyze is another critical issue. In this study, a capillary electrophoresis (CE) method with photodiode array detector (DAD) for the detection of amphetamines and ketamines in methanol/water solution, urine, and blood has been investigated including amphetamine (A), methamphetamine (MA), methylenedioxy-amphet

APA, Harvard, Vancouver, ISO, and other styles

41

Yen, Ping-Chung, and 顏鍾. "EFFECT OF THE LENGTH OF ACHIRAL ALKYL CHAIN AND TERMINAL BRANCHED ALKYL CHAIN OF CHIRAL LIQUID CRYSTALS ON THE STABILITY OF TGBA* PHASE." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/11565941195493741036.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Yeh, Tsung-Lin, and 葉宗林. "THE EFFECT OF THE CORE STRUCTURE AND THE ALKYL LENGTH ON THE FORMAITON OF MESOPHASES OF THE CHIRAL LIQUID CRYSTAL MATERIALS AND ACHIRAL SWALLOW-TAIL MATERIALS." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/11287310076061278797.

Full text

Abstract:

碩士<br>大同工學院<br>化學工程研究所<br>87<br>ABSTRACT Chiral material, (R)-2-alkyl-ols, and achiral material, 1-alkyl-alcohols, were used as building blocks for the preparation of liquid crystal materials. The investigation that the effect of molecular structures on the mesophases and mesomorphic properties was divided into three parts. The first part was to synthesize a homologous series of (S)-(-)-6-(1-methylalkyloxy)naphth-2-yl 4-decyloxybenzoates, (S)MnNDB (n=2~6), in order to investigate the effect of extending the chiral peripheral alkyl chain length on the mesomorphic propertie

APA, Harvard, Vancouver, ISO, and other styles

43

Cheng, Te-Sheng, and 鄭德勝. "EFFECT OF THE LENGTH OF ACHIRAL ALKYL CHAIN, TERMINAL ALKYL CHAIN AND THE RIGID CORE STRUCTURE OF OXYGEN-CONTAINING CHIRAL LIQUID CRYSTALS ON THE STABILITY OF FRUSTRATED PHASES." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/44722884029684878540.

Full text

Abstract:

碩士<br>大同工學院<br>化學工程學系<br>85<br>Chiral (R)- and (S)-3-alkoxy-2-methylpropionic acids were synthesized as building blocks for the preparation of chiral liquid crystalline materials. The investigation about the effect of molecular structures on the mesophases and mesomorphic properties was divided into three parts. The first part was to synthesize a homologous series of (R)-6-(3- ethoxy-2-methylpropionyloxy)-2- naphthyl 4- alkoxybenzoates , (R)EMPNmB (m=6~13) , in order to u

APA, Harvard, Vancouver, ISO, and other styles

44

Zheng, De-Sheng, and 鄭德勝. "EFFECT OF THE LENGTH OF ACHIRAL ALKYL CHAIN, TERMINAL ALKYL CHAIN AND THE RIGID CORE STRUCTURE OF OXYGEN-CONTAINING CHIRAL LIQUID CRYSTALS ON THE STABILITY OF FRUSTRATED PHASES." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/00558674379637586241.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Chattopadhyay, Jayeeta. "Activity induced phase separation and the emergence of liquid crystal phases in chiral and achiral systems, and development of an efficient method to compute the entropy of various liquid crystal phases." Thesis, 2023. https://etd.iisc.ac.in/handle/2005/6168.

Full text

Abstract:

The phase behaviour of shape-anisotropic particles is an emerging field of research that gives rise to various liquid crystal phases. In this thesis, we explore various equilibrium and non-equilibrium properties of shape-anisotropic particles by modelling them as soft repulsive spherocylinders (SRSs) and soft helical rods. In the first part, we introduce the two-temperature model to study the phase behaviour of scalar active SRS and soft helical rods. Most realisations of activity are vectorial in nature due to the force of self-propulsion. Recent studies have shown that many physical an

APA, Harvard, Vancouver, ISO, and other styles

46

Yung, Ling-ya, and 袁琳雅. "Study on the Mesophases and Electric-optical Properties of Chiral Materials Possessing Various Achial and Chiral Alkyl Chains at Chiral Tail." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/69532520708963214186.

Full text

Abstract:

碩士<br>大同大學<br>化學工程學系(所)<br>97<br>The purpose of this research work was an attempt to elucidate the extension of chiral alkyl length of liquid crystal materials possessing the lateral methyl substituent affects on the mesomorphic and electro-optical properties. Thus, new chiral precursors, (S)-1-alkyloxy-2-propanols were designed and synthesized by the reaction of (S)-propylene oxide with alkanols under basic condition. Subsequently, four homologous series of chiral liquid materials, (R)-1-alkyloxy-2-propyl 4-[4’-(4”-alkyloxyphenyl)phenyloxy]benzoates , I(m=8-12,n=5), II(m=8-12,n=6), III(m=8-12

APA, Harvard, Vancouver, ISO, and other styles

47

Schierwater, Kathrin [Verfasser]. "Chirale und achirale Lanthanoidorganyle mit funktionalisierten Alkoxidbrücken / vorgelegt von Kathrin Schierwater." 2003. http://d-nb.info/969985533/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Ehlert, Dennis K. [Verfasser]. "Chirale und achirale Liganden für die Fluoreszenzspektroskopie / von Dennis K. Ehlert." 1999. http://d-nb.info/95764468X/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!