Effect of orientation of lateral substituent on the mesophase behavior of some New azo/ester liquid crystal compounds / (Record no. 60010)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02834cam a2200349 a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | EG-GiCUC |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250223031655.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 170227s2016 ua dh f m 000 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EG-GiCUC |
| Language of cataloging | eng |
| Transcribing agency | EG-GiCUC |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| 049 ## - LOCAL HOLDINGS (OCLC) | |
| Holding library | Deposite |
| 097 ## - Thesis Degree | |
| Thesis Level | Ph.D |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | Cai01.12.10.Ph.D.2016.Am.E |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Amira Hasan Fahmy Abaza |
| 245 10 - TITLE STATEMENT | |
| Title | Effect of orientation of lateral substituent on the mesophase behavior of some New azo/ester liquid crystal compounds / |
| Statement of responsibility, etc. | Amira Hasan Fahmy Abaza ; Supervised Abdelgawad A. Fahmi , Magdi M. Naoum , Gamal R. Saad |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | تأثير إتجاه المستبدل العرضي على سلوك طور الوسط لبعض مركبات الأزو إيستر البللورية السائلة الجديدة |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Cairo : |
| Name of publisher, distributor, etc. | Amira Hasan Fahmy Abaza , |
| Date of publication, distribution, etc. | 2016 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 156 , (10) P. : |
| Other physical details | charts , facsimiles ; |
| Dimensions | 25cm |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Organic Chemistry |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Six homologous series of 4-(4ʹalkoxy phenylazo) phenyl 4ʺ- substituted benzoates (Ina-f ) were prepared in which the alkoxy group n varies between 6, 8, 10 and 12 carbons, while, within the six homologous series, the terminal substituent, X, alternatively changed from CH₃O, CH₃, H, Br, NO₂ and CN. A comparative study was made between the investigated compounds and their isomers, namely, 4- (4ʹ- substituted phenylazo) phenyl- 4ʺalkoxybenzoates in which the two terminal groups are exchanged. The effect of lateral methyl substitution and its orientation on the mesophase behavior of Ina-f, were also investigated on two newly prepared homologous series of 4- alkoxyphenylazo 4ʹ- (2- (and 3-) methyl-) 4"-substituted benzoates (IIna-f and IIIna-f, six series each). All compounds prepared were characterized by infrared, mass, elemental analyses and H1-MNR spectroscopy and their transition temperatures determined by differential scanning calorimetry (DSC) and phases identified via polarized light microscopy (PLM). The results were discussed in terms of steric and polarizability effects. The mesophase stability ({u221A}TC) was correlated with the polarizability anisotropy of bonds to the terminal substituent X. Comparative studies were made between the two groups of compounds (IIna-f and IIIna-f) with each other and with their laterally neat analogues Ina-f |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
| Additional physical form available note | Issued also as CD |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Lateral methyl substitution |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Mesophase behavior |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Phenylazo phenyl benzoates |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Abdelgawad Aly Fahmi , |
| Relator term | |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Gamal Riead Saad , |
| Relator term | |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Magdi Mekhael Naoum , |
| Relator term | |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://172.23.153.220/th.pdf">http://172.23.153.220/th.pdf</a> |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Nazla |
| Reviser | Revisor |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Samia |
| Reviser | Cataloger |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Source of classification or shelving scheme | Not for loan | Home library | Current library | Date acquired | Full call number | Barcode | Date last seen | Koha item type | Copy number |
|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 11.02.2024 | Cai01.12.10.Ph.D.2016.Am.E | 01010110071140000 | 22.09.2023 | Thesis | ||
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | مخـــزن الرســائل الجـــامعية - البدروم | 11.02.2024 | Cai01.12.10.Ph.D.2016.Am.E | 01020110071140000 | 22.09.2023 | CD - Rom | 71140.CD |