Development and comparison of azimuthal anchoring energy using novel photo-initiators
DC Field | Value | Language |
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dc.contributor.author | 신동명 | - |
dc.date.available | 2020-07-10T04:55:19Z | - |
dc.date.created | 2020-07-08 | - |
dc.date.issued | 2017-08-31 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/5363 | - |
dc.description.abstract | We synthesized two novel photo-initiators to increase the surface energy of liquid crystal (LC) and reduce the UV irradiation time what is the worst problems of photo-alignment method at the same time. Photo-initiators were respectively synthesized by using hexanoic anhydride and crotonic anhydride and then analyzed to confirm the synthesis by FT-IR, H-NMR and UV-Vis and were measured for contact angle, pretilt angle and azimuthal anchoring energy. In the UVVis spectra, Photo-initiator what synthesized by crotonic anhydride (CAP) showed the faster reactivity than photo-initiator what synthesized by hexanoic anhydride (HAP). Photo-initiators had gradually decreased in absorbance and characteristic bimodal shape at 270~280nm and completed the photo-degradation reaction within 1 minute as soon as possible within 5 minutes at the latest and a photo-initiator using hexanoic anhydride(HAP) generally had the largest decrease width. Also, CAP had nearly twice maximum anchoring energy, 6.93*10-5 J/m2 at 10 minutes of UV irradiation time, as likely to HAP, 3.68*10-5 J/m2 at 8 minutes. Each photoinitiators have the specific time what indicates the maximum anchoring energy and this results from its difference of molecular structures. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | KJF | - |
dc.title | Development and comparison of azimuthal anchoring energy using novel photo-initiators | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | 신동명 | - |
dc.identifier.bibliographicCitation | KJF-ICOMEP, v.1, no.1, pp.16 - 16 | - |
dc.relation.isPartOf | KJF-ICOMEP | - |
dc.citation.title | KJF-ICOMEP | - |
dc.citation.volume | 1 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 16 | - |
dc.citation.endPage | 16 | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
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