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Title: Design synthesis and characterization of hydrogen bonded ferroelectric liquid crystals formed by levo tartaric acid and alkyloxy benzoic acids
Researcher: Murugadass, K
Guide(s): Madhu Mohan, M L N
Keywords: Alkyloxy Benzoic Acids
Hydrogen Bonded
Levo Tartaric Acid
Liquid Crystals
Upload Date: 16-Sep-2014
University: Anna University
Completed Date: n.d.
Abstract: Design synthesis and characterization of Hydrogen Bonded Liquid newlineCrystals HBLC play a vital role in the development of soft materials for newlinevarious applications Especially the characterizations of Ferroelectric Liquid newlineCrystals FLC have great implication to fulfil the current challenges in display newlinedevices materials With this insight the present study is intended to design newlinesynthesize and characterize three novel series of hydrogen bonded compounds newlineincluding chiral homologues These compounds are characterized by newlinespectroscopic studies FTIR and NMR thermal studies Polarizing Optical newlineMicroscopy POM Differential Scanning Calorimetric study DSC and Optical newlinetilt angle measurements Further the variation of dielectric permittivity with newlinetemperature and dielectric relaxation studies in various mesophases are also newlinecarried out to detect the phase transition temperatures and corresponding newlineArrhenius energies The growth of selected mesophases has been studied by newlinecrystallization kinetics newlineDesign synthesis and characterization of various Hydrogen Bonded newlineLiquid Crystals HBLC have been undertaken Three series of compounds newlinenamely levo tartaric acid and pn alkoxy benzoic acid homologous series newlineLTAnBAO where n represent alkoxy carbon number dodecyl aniline and piv newlinen alkoxy benzoic acid homologous series 12A12BAO and hexadecyl aniline newlineand pn alkoxy benzoic acid homologous series 16A12BAO have been newlineisolated The synthesis route involves mixing of equimolar ratios of pn alkoxy newlinebenzoic acid and the other ingredients The first series LTAnBAO is newlineferroelectric with four compounds exhibiting various orthogonal and tilted newlinephases the latter two series 12AnBAO 16AnBAO comprise of sixteen newlinedifferent compounds exhibiting rich phase polymorphism FTIR and NMR newlinestudies on these compounds infer the formation of hydrogen bond newlineConventional phases like Cholestric Nematic Smectic C Smectic F and newlineSmectic G phases are recorded and identified with the standard textures newline newline newline newline newline newline newline newline newline newline newline newline newline newline newline newline newline newline newline newline newline
Pagination: xxviii,250p.
Appears in Departments:Faculty of Science and Humanities

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01_title.pdfAttached File252.91 kBAdobe PDFView/Open
02_certificate.pdf4.84 MBAdobe PDFView/Open
03_abstract.pdf68.5 kBAdobe PDFView/Open
04_acknowledgement.pdf63.17 kBAdobe PDFView/Open
05_contents.pdf140.98 kBAdobe PDFView/Open
06_chapter 1.pdf258.03 kBAdobe PDFView/Open
07_chapter 2.pdf559.45 kBAdobe PDFView/Open
08_chapter 3.pdf3.05 MBAdobe PDFView/Open
09_chapter 4.pdf6.25 MBAdobe PDFView/Open
10_chapter 5.pdf1.72 MBAdobe PDFView/Open
11_chapter 6.pdf1.84 MBAdobe PDFView/Open
12_chapter 7.pdf2 MBAdobe PDFView/Open
13_chapter 8.pdf990.27 kBAdobe PDFView/Open
14_chapter 9.pdf1.42 MBAdobe PDFView/Open
15_chapter 10.pdf589.52 kBAdobe PDFView/Open
16_chapter 11.pdf100.79 kBAdobe PDFView/Open
17_references.pdf150.11 kBAdobe PDFView/Open
18_publications.pdf63.92 kBAdobe PDFView/Open
19_vitae.pdf56.36 kBAdobe PDFView/Open

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