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A bis-benzimidazole PMO ratiometric fluorescence sensor exhibiting AIEE and ESIPT for sensitive detection of Cu(2+)
A novel bis-benzimidazole organic siloxane precursor (BBM-Si) was prepared, and was combined with tetraethylorthosilicate (TEOS) as a mixed Si source. Then, bridged periodic mesoporous organosilica (BBM-PMO) spherical nanoparticles were synthesized by co-condensation using cetyltrimethylammonium bro...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9063946/ https://www.ncbi.nlm.nih.gov/pubmed/35519599 http://dx.doi.org/10.1039/c9ra00892f |
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author | Hao, Xiafan Han, Shuhua Zhu, Jingtao Hu, Yongfeng Chang, Lo Yueh Pao, Chih-Wen Chen, Jeng-Lung Chen, Jin-Ming Haw, Shu-Chih |
author_facet | Hao, Xiafan Han, Shuhua Zhu, Jingtao Hu, Yongfeng Chang, Lo Yueh Pao, Chih-Wen Chen, Jeng-Lung Chen, Jin-Ming Haw, Shu-Chih |
author_sort | Hao, Xiafan |
collection | PubMed |
description | A novel bis-benzimidazole organic siloxane precursor (BBM-Si) was prepared, and was combined with tetraethylorthosilicate (TEOS) as a mixed Si source. Then, bridged periodic mesoporous organosilica (BBM-PMO) spherical nanoparticles were synthesized by co-condensation using cetyltrimethylammonium bromide (CTAB) as structure directing agent. The optical properties showed that BBM qualifies as an “aggregation induced emission enhanced” (AIEE) molecule, exhibiting characteristics of excited-state intramolecular proton transfer (ESIPT), such as a large Stokes shift and dual fluorescence emission. For the BBM-PMO materials, the silica skeleton provides a rigid environment that limits molecular rotation, resulting in improved fluorescence emission. In particular, the BBM-PMOs exhibited dual emission of the enol and keto forms, achieving a ratiometric response to Cu(2+) with high sensitivity and selectivity in a broad pH range. Additionally, the limit of detection was as low as 7.15 × 10(−9) M in aqueous solution. The X-ray absorption near-edge spectroscopy (XANES) showed the coordination structure through the interaction between copper ions and N atoms of benzimidazole in the BBM-PMO coordinated to Cu(2+). These results demonstrate that BBM-PMO hybrid materials have potential applications in the fields of bio-imaging and environmental monitoring. |
format | Online Article Text |
id | pubmed-9063946 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90639462022-05-04 A bis-benzimidazole PMO ratiometric fluorescence sensor exhibiting AIEE and ESIPT for sensitive detection of Cu(2+) Hao, Xiafan Han, Shuhua Zhu, Jingtao Hu, Yongfeng Chang, Lo Yueh Pao, Chih-Wen Chen, Jeng-Lung Chen, Jin-Ming Haw, Shu-Chih RSC Adv Chemistry A novel bis-benzimidazole organic siloxane precursor (BBM-Si) was prepared, and was combined with tetraethylorthosilicate (TEOS) as a mixed Si source. Then, bridged periodic mesoporous organosilica (BBM-PMO) spherical nanoparticles were synthesized by co-condensation using cetyltrimethylammonium bromide (CTAB) as structure directing agent. The optical properties showed that BBM qualifies as an “aggregation induced emission enhanced” (AIEE) molecule, exhibiting characteristics of excited-state intramolecular proton transfer (ESIPT), such as a large Stokes shift and dual fluorescence emission. For the BBM-PMO materials, the silica skeleton provides a rigid environment that limits molecular rotation, resulting in improved fluorescence emission. In particular, the BBM-PMOs exhibited dual emission of the enol and keto forms, achieving a ratiometric response to Cu(2+) with high sensitivity and selectivity in a broad pH range. Additionally, the limit of detection was as low as 7.15 × 10(−9) M in aqueous solution. The X-ray absorption near-edge spectroscopy (XANES) showed the coordination structure through the interaction between copper ions and N atoms of benzimidazole in the BBM-PMO coordinated to Cu(2+). These results demonstrate that BBM-PMO hybrid materials have potential applications in the fields of bio-imaging and environmental monitoring. The Royal Society of Chemistry 2019-05-02 /pmc/articles/PMC9063946/ /pubmed/35519599 http://dx.doi.org/10.1039/c9ra00892f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Hao, Xiafan Han, Shuhua Zhu, Jingtao Hu, Yongfeng Chang, Lo Yueh Pao, Chih-Wen Chen, Jeng-Lung Chen, Jin-Ming Haw, Shu-Chih A bis-benzimidazole PMO ratiometric fluorescence sensor exhibiting AIEE and ESIPT for sensitive detection of Cu(2+) |
title | A bis-benzimidazole PMO ratiometric fluorescence sensor exhibiting AIEE and ESIPT for sensitive detection of Cu(2+) |
title_full | A bis-benzimidazole PMO ratiometric fluorescence sensor exhibiting AIEE and ESIPT for sensitive detection of Cu(2+) |
title_fullStr | A bis-benzimidazole PMO ratiometric fluorescence sensor exhibiting AIEE and ESIPT for sensitive detection of Cu(2+) |
title_full_unstemmed | A bis-benzimidazole PMO ratiometric fluorescence sensor exhibiting AIEE and ESIPT for sensitive detection of Cu(2+) |
title_short | A bis-benzimidazole PMO ratiometric fluorescence sensor exhibiting AIEE and ESIPT for sensitive detection of Cu(2+) |
title_sort | bis-benzimidazole pmo ratiometric fluorescence sensor exhibiting aiee and esipt for sensitive detection of cu(2+) |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9063946/ https://www.ncbi.nlm.nih.gov/pubmed/35519599 http://dx.doi.org/10.1039/c9ra00892f |
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