Synthesis and Characterization of Naphthalene-Based Banana- Shaped Liquid Crystals for Photoswitching Properties
A series of banana-shaped monomers containing naphthalene as central units, azobenzene in side arms with terminal alkenes were synthesized and characterized. Polarizing optical microscopy, DSC and X-ray diffraction measurements reveal that one compound processes a nematic phase while other four comp...
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| Format: | Article |
| Language: | English English |
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John Wiley & Sons, Inc.
2014
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| Online Access: | http://umpir.ump.edu.my/id/eprint/5470/ http://umpir.ump.edu.my/id/eprint/5470/ http://umpir.ump.edu.my/id/eprint/5470/ http://umpir.ump.edu.my/id/eprint/5470/1/journal_of_chinese_chemical_society.pdf http://umpir.ump.edu.my/id/eprint/5470/4/Synthesis%20and%20Characterization%20of%20Naphthalene-Based%20Banana-Shaped%20Liquid%20Crystals%20for%20Photoswitching%20Properties.pdf |
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ump-54702018-01-31T01:37:17Z http://umpir.ump.edu.my/id/eprint/5470/ Synthesis and Characterization of Naphthalene-Based Banana- Shaped Liquid Crystals for Photoswitching Properties Hegde, Gurumurthy Lutfor, M. R. M. M., Yusoff Muhammad Nor Fazli, Abd Malek Nurlin, Abu Samah Srinivasa, H. T. Kumar, Sandeep QD Chemistry QC Physics A series of banana-shaped monomers containing naphthalene as central units, azobenzene in side arms with terminal alkenes were synthesized and characterized. Polarizing optical microscopy, DSC and X-ray diffraction measurements reveal that one compound processes a nematic phase while other four compounds exhibit B6 phase. The absorption spectrum of trans-azobenzene displays high-intensity -* transition at 365 and low-intensity n-* transition at 450 nm. These molecules exhibit strong photoisomerisation behaviour in solutions in which trans to cis isomerisation takes 55 seconds whereas reverse process takes about 32 hours. Such a long thermal back relaxation is useful for creation of optical image storage devices. John Wiley & Sons, Inc. 2014-02-24 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/5470/1/journal_of_chinese_chemical_society.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/5470/4/Synthesis%20and%20Characterization%20of%20Naphthalene-Based%20Banana-Shaped%20Liquid%20Crystals%20for%20Photoswitching%20Properties.pdf Hegde, Gurumurthy and Lutfor, M. R. and M. M., Yusoff and Muhammad Nor Fazli, Abd Malek and Nurlin, Abu Samah and Srinivasa, H. T. and Kumar, Sandeep (2014) Synthesis and Characterization of Naphthalene-Based Banana- Shaped Liquid Crystals for Photoswitching Properties. Journal of the Chinese Chemical Society, 61 (5). pp. 571-577. ISSN 0009-4536 (print); 2192-6549 (online) http://dx.doi.org/10.1002/jccs.201300191 DOI: 10.1002/jccs.201300191 |
| repository_type |
Digital Repository |
| institution_category |
Local University |
| institution |
Universiti Malaysia Pahang |
| building |
UMP Institutional Repository |
| collection |
Online Access |
| language |
English English |
| topic |
QD Chemistry QC Physics |
| spellingShingle |
QD Chemistry QC Physics Hegde, Gurumurthy Lutfor, M. R. M. M., Yusoff Muhammad Nor Fazli, Abd Malek Nurlin, Abu Samah Srinivasa, H. T. Kumar, Sandeep Synthesis and Characterization of Naphthalene-Based Banana- Shaped Liquid Crystals for Photoswitching Properties |
| description |
A series of banana-shaped monomers containing naphthalene as central units, azobenzene in side arms with terminal alkenes were synthesized and characterized. Polarizing optical microscopy, DSC and X-ray diffraction measurements reveal that one compound processes a nematic phase while other four compounds exhibit B6 phase. The absorption spectrum of trans-azobenzene displays high-intensity -* transition at 365 and low-intensity n-* transition at 450 nm. These molecules exhibit strong photoisomerisation behaviour in solutions in which trans to cis isomerisation takes 55 seconds whereas reverse process takes about 32 hours. Such a long thermal back relaxation is useful for creation of optical image storage devices. |
| format |
Article |
| author |
Hegde, Gurumurthy Lutfor, M. R. M. M., Yusoff Muhammad Nor Fazli, Abd Malek Nurlin, Abu Samah Srinivasa, H. T. Kumar, Sandeep |
| author_facet |
Hegde, Gurumurthy Lutfor, M. R. M. M., Yusoff Muhammad Nor Fazli, Abd Malek Nurlin, Abu Samah Srinivasa, H. T. Kumar, Sandeep |
| author_sort |
Hegde, Gurumurthy |
| title |
Synthesis and Characterization of Naphthalene-Based Banana- Shaped Liquid Crystals for Photoswitching Properties |
| title_short |
Synthesis and Characterization of Naphthalene-Based Banana- Shaped Liquid Crystals for Photoswitching Properties |
| title_full |
Synthesis and Characterization of Naphthalene-Based Banana- Shaped Liquid Crystals for Photoswitching Properties |
| title_fullStr |
Synthesis and Characterization of Naphthalene-Based Banana- Shaped Liquid Crystals for Photoswitching Properties |
| title_full_unstemmed |
Synthesis and Characterization of Naphthalene-Based Banana- Shaped Liquid Crystals for Photoswitching Properties |
| title_sort |
synthesis and characterization of naphthalene-based banana- shaped liquid crystals for photoswitching properties |
| publisher |
John Wiley & Sons, Inc. |
| publishDate |
2014 |
| url |
http://umpir.ump.edu.my/id/eprint/5470/ http://umpir.ump.edu.my/id/eprint/5470/ http://umpir.ump.edu.my/id/eprint/5470/ http://umpir.ump.edu.my/id/eprint/5470/1/journal_of_chinese_chemical_society.pdf http://umpir.ump.edu.my/id/eprint/5470/4/Synthesis%20and%20Characterization%20of%20Naphthalene-Based%20Banana-Shaped%20Liquid%20Crystals%20for%20Photoswitching%20Properties.pdf |
| first_indexed |
2023-09-18T22:00:48Z |
| last_indexed |
2023-09-18T22:00:48Z |
| _version_ |
1777414384675454976 |