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Title: Growth of complex organic molecules unidirectional crystals from solution and their characterization
Researcher: Parthasarathy, M
Guide(s): Gopalakrishnan, R
Keywords: Crystals
Organic Molecules
Upload Date: 8-Sep-2014
University: Anna University
Completed Date: n.d.
Abstract: In the recent years the technology and science of crystal growth newlinehave advanced rapidly for the development of new nonlinear optical newlinematerials The desire to utilize the properties of these materials in applications newlinesuch as telecommunications optical data storage and optical information newlineprocessing has created need for new materials with large second order newlinesusceptibilities As crystals have been playing a vital role in almost all newlinebranches of industry and daily life the importance of crystal growth for the newlineadvancement can be realized from the fact that crystals are used in electronic newlinedevices manufactured by electronic industries newlineThe present thesis gives a brief introduction to crystal growth newlinemethods instrumentation details of the characterization techniques and the newlinetheory of nonlinear optics NLO with the focus on second order nonlinearity newlineThe growth aspects of LSerine methyl ester hydrochloride LSMEHCl newlineLTyrosine methyl ester hydrochloride LTYMEHCl DPhenylglycinium newlinebromide DPGB and Ethyl triphenylphosphonium bromide dihydrate ETPB newlineand Methyl 2amino5bromobenzoate M2A5B single crystals were newlinediscussed In addition M2A5B single crystals were grown by novel newlineunidirectional SankaranayananRamasamy SR and the results were newlinecompared with conventional solution grown M2A5B crystals newlineThe LSerine methyl ester hydrochloride single crystals were newlinegrown by low temperature solution growth technique Single crystal Xray newlinediffraction studies revealed that the crystal belongs to monoclinic system with newlinespace group P2 From the UVVisible absorbance studies the newlineoptical band gap energy was calculated to be 5 eV The refractive indices of newlinethe crystal were determined using Brewster s angle method TGDTA and newlineDSC studies showed that the crystals were thermally stable up to 168 C newlineThe SHG efficiency of LSMEHCl was measured using KurtzPerry powder newlinetechnique and was found to be 116 times higher than that of KDP Particle newlinesize SHG dependency shows the existence of phase matching behaviour of newlineLSMEHCl newline newline
Pagination: xxii,192p.
Appears in Departments:Faculty of Science and Humanities

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02_certificate.pdf2.49 MBAdobe PDFView/Open
03_abstract.pdf76.67 kBAdobe PDFView/Open
04_acknowledgement.pdf68.15 kBAdobe PDFView/Open
05_contents.pdf122.39 kBAdobe PDFView/Open
06_chapter 1.pdf2.49 MBAdobe PDFView/Open
07_chapter 2.pdf1.83 MBAdobe PDFView/Open
08_chapter 3.pdf2.61 MBAdobe PDFView/Open
09_chapter 4.pdf2.65 MBAdobe PDFView/Open
10_chapter 5.pdf2.28 MBAdobe PDFView/Open
11_chapter 6.pdf7.39 MBAdobe PDFView/Open
12_chapter 7.pdf89.15 kBAdobe PDFView/Open
13_references.pdf147.18 kBAdobe PDFView/Open
14_publications.pdf65.98 kBAdobe PDFView/Open
15_vitae.pdf64.01 kBAdobe PDFView/Open

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