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タイトル: | Synthesis of emissive water-soluble network polymers based on polyhedral oligomeric silsesquioxane and their application as optical sensors for discriminating the particle size |
著者: | Kakuta, Takahiro Tanaka, Kazuo https://orcid.org/0000-0001-6571-7086 (unconfirmed) Chujo, Yoshiki |
著者名の別形: | 田中, 一生 中條, 善樹 |
キーワード: | POSS Network polymer Hybrid gel Silica particle Fluorescence Optical sensor |
発行日: | 28-Oct-2015 |
出版者: | Royal Society of Chemistry |
誌名: | Journal of Materials Chemistry C |
巻: | 3 |
号: | 48 |
開始ページ: | 12539 |
終了ページ: | 12545 |
抄録: | We report organic‒inorganic hybrid gels composed of polyhedral oligomeric silsesquioxane (POSS)-based network polymers and their variable emission properties depended on the size of coexisting silica particles (SPs). The POSS networks were constructed from octaammonium POSS by connecting with bithiophene dicarboxylic acid. By modulating the feed ratio of the bithiophene linker, the series of the POSS networks were obtained with various cross-linking ratios among the POSS units. The POSS networks showed good water-solubility and emissions originated from the bithiophene linkers in water. Initially, it was observed that the POSS networks with relatively-lower cross-linking ratio showed the higher affinity to SPs. The increase of the affinity was observed from all POSS networks to the small-sized SPs. Interestingly, it was found that the emission properties were varied simply by adding the silica particles into the sample. In the presence of the nanoparticles dispersed in the sample, the red-shifted emission of the POSS network was induced. On the other hand, the blue-shifted emission was observed from the samples containing the microparticles. These peak shifts depended on the size of coexisting particles should originate from the polarity changes around the bithiophene cross-linkers induced by the adsorption of the POSS networks onto the particle surfaces. These emission characteristics could be applicable for developing a facile optical chmosensor for discriminating the size of the nanomaterials. |
記述: | Accepted 19 Oct 2015 |
著作権等: | This journal is ©The Royal Society of Chemistry 2015 The full-text file will be made open to the public on 20 October 2016 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. The full-text file will be made open to the public on 27 February 2016 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/207596 |
DOI(出版社版): | 10.1039/C5TC03139G |
出現コレクション: | 学術雑誌掲載論文等 |
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