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Selenide-Containing Polyimides with an Ultrahigh Intrinsic Refractive Index
This work developed novel selenium-containing polyimides with a high intrinsic refractive index. Four polyimides with different selenium contents and repeat unit structures were designed and synthesized via amine-dianhydride polycondensation of one of two diamines, i.e., 4,4′-oxydianiline or bis(4-a...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415271/ https://www.ncbi.nlm.nih.gov/pubmed/30966452 http://dx.doi.org/10.3390/polym10040417 |
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author | Li, Qilong Zhang, Jiandong Pan, Xiangqiang Zhang, Zhengbiao Zhu, Jian Zhu, Xiulin |
author_facet | Li, Qilong Zhang, Jiandong Pan, Xiangqiang Zhang, Zhengbiao Zhu, Jian Zhu, Xiulin |
author_sort | Li, Qilong |
collection | PubMed |
description | This work developed novel selenium-containing polyimides with a high intrinsic refractive index. Four polyimides with different selenium contents and repeat unit structures were designed and synthesized via amine-dianhydride polycondensation of one of two diamines, i.e., 4,4′-oxydianiline or bis(4-aminophenyl)selanide, with one of two dianhydrides, i.e., bis(4-(3,4-dicarboxylbenzoyloxy)phenyl) ester dianhydride or 1,1′-bis(4-(3,4-dicarboxylbenzoyloxy)phenyl) selenide dianhydride. Various techniques, e.g., nuclear magnetic resonance, Fourier transformed infrared spectroscopy, and wide-angle X-ray diffraction, were used to characterize the polymers’ structures. Differential scanning calorimetry, thermogravimetric analysis, ultraviolet-visible spectroscopy, and spectroscopic ellipsometry were used to characterize the properties of the polymers. The selenium contents showed a positive effect on the refractive index of the final polymer. In addition, the refractive index can reach up to 1.968 at 633 nm, which was the highest intrinsic refractive index of a polyimide ever reported. Because of the high intrinsic refractive index, the reflective ratio of visible light on the surface of a silicon wafer was significantly reduced, indicating the potentially utility of the polymer in an anti-reflection coating. |
format | Online Article Text |
id | pubmed-6415271 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64152712019-04-02 Selenide-Containing Polyimides with an Ultrahigh Intrinsic Refractive Index Li, Qilong Zhang, Jiandong Pan, Xiangqiang Zhang, Zhengbiao Zhu, Jian Zhu, Xiulin Polymers (Basel) Article This work developed novel selenium-containing polyimides with a high intrinsic refractive index. Four polyimides with different selenium contents and repeat unit structures were designed and synthesized via amine-dianhydride polycondensation of one of two diamines, i.e., 4,4′-oxydianiline or bis(4-aminophenyl)selanide, with one of two dianhydrides, i.e., bis(4-(3,4-dicarboxylbenzoyloxy)phenyl) ester dianhydride or 1,1′-bis(4-(3,4-dicarboxylbenzoyloxy)phenyl) selenide dianhydride. Various techniques, e.g., nuclear magnetic resonance, Fourier transformed infrared spectroscopy, and wide-angle X-ray diffraction, were used to characterize the polymers’ structures. Differential scanning calorimetry, thermogravimetric analysis, ultraviolet-visible spectroscopy, and spectroscopic ellipsometry were used to characterize the properties of the polymers. The selenium contents showed a positive effect on the refractive index of the final polymer. In addition, the refractive index can reach up to 1.968 at 633 nm, which was the highest intrinsic refractive index of a polyimide ever reported. Because of the high intrinsic refractive index, the reflective ratio of visible light on the surface of a silicon wafer was significantly reduced, indicating the potentially utility of the polymer in an anti-reflection coating. MDPI 2018-04-09 /pmc/articles/PMC6415271/ /pubmed/30966452 http://dx.doi.org/10.3390/polym10040417 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Li, Qilong Zhang, Jiandong Pan, Xiangqiang Zhang, Zhengbiao Zhu, Jian Zhu, Xiulin Selenide-Containing Polyimides with an Ultrahigh Intrinsic Refractive Index |
title | Selenide-Containing Polyimides with an Ultrahigh Intrinsic Refractive Index |
title_full | Selenide-Containing Polyimides with an Ultrahigh Intrinsic Refractive Index |
title_fullStr | Selenide-Containing Polyimides with an Ultrahigh Intrinsic Refractive Index |
title_full_unstemmed | Selenide-Containing Polyimides with an Ultrahigh Intrinsic Refractive Index |
title_short | Selenide-Containing Polyimides with an Ultrahigh Intrinsic Refractive Index |
title_sort | selenide-containing polyimides with an ultrahigh intrinsic refractive index |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415271/ https://www.ncbi.nlm.nih.gov/pubmed/30966452 http://dx.doi.org/10.3390/polym10040417 |
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