MARC details
| 000 -LEADER |
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| fixed length control field |
02814ntm a2200289 a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
vtls000093778 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
KUKTEM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251117113352.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
160310q2015 my da f ab m 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0000141(Local) |
| 039 #9 - LEVEL OF BIBLIOGRAPHIC CONTROL AND CODING DETAIL [OBSOLETE] |
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| Level of rules in bibliographic description |
201905131416 |
| Level of effort used to assign nonsubject heading access points |
nazirah |
| Level of effort used to assign subject headings |
201710041606 |
| Level of effort used to assign classification |
aishah |
| -- |
201603101257 |
| -- |
asma |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
UMP |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
FIST .G36 2015 r Thesis |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Gan, Siew Mei |
| 245 10 - TITLE STATEMENT |
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| Title |
Azobenzene-liquid crystal composite for fabrication of optical storage devices / |
| Statement of responsibility, etc. |
Gan Siew Mei |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
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| Place of publication, distribution, etc. |
Kuantan, Pahang : |
| Name of publisher, distributor, etc. |
UMP, |
| Date of publication, distribution, etc. |
2015 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xvii, 117 p. : |
| Other physical details |
ill. col. ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD-ROM |
| 500 ## - GENERAL NOTE |
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| General note |
Faculty of Industrial Sciences and Technology |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (Master of Science in Advanced Materials) -- Universiti Malaysia Pahang – 2015 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Bibliography : p. 97-103 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
The primary purpose of this research is to characterized four series of azobenzene with different substituents to be employed as azobenzene-liquid crystal composite mixture in optical storage devices. Firstly, the azobenzene substituents effects on liquid crystallinity were observed under polarising optical microscope and their phase transition temperatures were confirmed by calorimetric study. After that, photoisomerisation studies were conducted in solution form by using UV–Vis spectrophotometer in order to measure the time required for cis–trans isomerisation in thermal back relaxation process. In azobenzene with fluorine addition, monofluoro azobenzene with ester functional group gave smectic-A and nematic phases with thermal back relaxation around 22 hours. Better results were obtained by azobenzene with olefinic terminal chain; the presence of alkene enhanced the thermal back relaxation to 45 hours due to the unsaturated bonding in the molecule, capable of photo-crosslinking. However, incorporation of group-17 elements such as fluorine, chlorine, bromine and iodine in the olefinic azobenzene shorten the thermal back relaxation time although smectic-A and nematic phases were generated. Prototype of optical storage devices created showed good stability with high contrast display due to their thermal back relaxation and mesophases. This study is a bold step to tailor the property of light-sensitive azobenzene to make them suitable for optical storage device applications. Presented data give rich information about structure property relations where one can able to control the molecular structure using light |
| 610 20 - SUBJECT ADDED ENTRY--CORPORATE NAME |
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| Corporate name or jurisdiction name as entry element |
Faculty of Industrial Sciences and Technology |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Universities and Colleges |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Theses |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="http://ecollib.ump.edu.my/3540/">http://ecollib.ump.edu.my/3540/</a> |
| Public note |
Library access only |