Tandem Visual Recognition of Cu<sup>2+</sup> and Chiral Tartaric Acid by Sequence Gel Formation and Collapse
A chiral gelator (<i>R</i>)-H<sub>6</sub>L with multiple carboxyl groups based on a 1,1′-bi-2,2′-naphthol (BINOL) skeleton was prepared, and it could form a supramolecular gel under the induction of water in DMSO/H<sub>2</sub>O and DMF/H<sub>2</sub>O (...
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2025-05-01
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| author | Jian Zeng Yixuan Jiang Xiao-Qi Yu Shanshan Yu |
| author_facet | Jian Zeng Yixuan Jiang Xiao-Qi Yu Shanshan Yu |
| author_sort | Jian Zeng |
| collection | DOAJ |
| description | A chiral gelator (<i>R</i>)-H<sub>6</sub>L with multiple carboxyl groups based on a 1,1′-bi-2,2′-naphthol (BINOL) skeleton was prepared, and it could form a supramolecular gel under the induction of water in DMSO/H<sub>2</sub>O and DMF/H<sub>2</sub>O (1/1, <i>v</i>/<i>v</i>). In the EtOH/H<sub>2</sub>O system, the original partial gel transformed into a stable metal–organic gel (MOG), specifically with Cu<sup>2+</sup> among 20 metal ions. It is proposed that Cu<sup>2+</sup> coordinates with the carboxyl groups of (<i>R</i>)-H<sub>6</sub>L to form a three-dimensional network structure. With the addition of a variety of α-hydroxy acids and amino acids, the Cu<sup>2+</sup>-MOG collapsed with merely 0.06 equivalents of L-tartaric acid (L-TA), while other acids required much larger amounts to achieve the same effect, realizing the visual chemoselective and enantioselective recognition of tartaric acid. Therefore, the chiral gelator (<i>R</i>)-H<sub>6</sub>L achieved the tandem visual recognition of Cu<sup>2+</sup> and chiral tartaric acid by sequence gel formation and collapse, offering valuable insights for visual sensing applications and serving as a promising model for future chiral sensor design. |
| format | Article |
| id | doaj-art-217f77891cf14d89bce4833a92d4e69f |
| institution | Kabale University |
| issn | 2310-2861 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| series | Gels |
| spelling | doaj-art-217f77891cf14d89bce4833a92d4e69f2025-08-20T03:47:54ZengMDPI AGGels2310-28612025-05-0111534010.3390/gels11050340Tandem Visual Recognition of Cu<sup>2+</sup> and Chiral Tartaric Acid by Sequence Gel Formation and CollapseJian Zeng0Yixuan Jiang1Xiao-Qi Yu2Shanshan Yu3Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, ChinaKey Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, ChinaKey Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, ChinaKey Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, ChinaA chiral gelator (<i>R</i>)-H<sub>6</sub>L with multiple carboxyl groups based on a 1,1′-bi-2,2′-naphthol (BINOL) skeleton was prepared, and it could form a supramolecular gel under the induction of water in DMSO/H<sub>2</sub>O and DMF/H<sub>2</sub>O (1/1, <i>v</i>/<i>v</i>). In the EtOH/H<sub>2</sub>O system, the original partial gel transformed into a stable metal–organic gel (MOG), specifically with Cu<sup>2+</sup> among 20 metal ions. It is proposed that Cu<sup>2+</sup> coordinates with the carboxyl groups of (<i>R</i>)-H<sub>6</sub>L to form a three-dimensional network structure. With the addition of a variety of α-hydroxy acids and amino acids, the Cu<sup>2+</sup>-MOG collapsed with merely 0.06 equivalents of L-tartaric acid (L-TA), while other acids required much larger amounts to achieve the same effect, realizing the visual chemoselective and enantioselective recognition of tartaric acid. Therefore, the chiral gelator (<i>R</i>)-H<sub>6</sub>L achieved the tandem visual recognition of Cu<sup>2+</sup> and chiral tartaric acid by sequence gel formation and collapse, offering valuable insights for visual sensing applications and serving as a promising model for future chiral sensor design.https://www.mdpi.com/2310-2861/11/5/340visual sensormetal–organic gelchiral recognition |
| spellingShingle | Jian Zeng Yixuan Jiang Xiao-Qi Yu Shanshan Yu Tandem Visual Recognition of Cu<sup>2+</sup> and Chiral Tartaric Acid by Sequence Gel Formation and Collapse Gels visual sensor metal–organic gel chiral recognition |
| title | Tandem Visual Recognition of Cu<sup>2+</sup> and Chiral Tartaric Acid by Sequence Gel Formation and Collapse |
| title_full | Tandem Visual Recognition of Cu<sup>2+</sup> and Chiral Tartaric Acid by Sequence Gel Formation and Collapse |
| title_fullStr | Tandem Visual Recognition of Cu<sup>2+</sup> and Chiral Tartaric Acid by Sequence Gel Formation and Collapse |
| title_full_unstemmed | Tandem Visual Recognition of Cu<sup>2+</sup> and Chiral Tartaric Acid by Sequence Gel Formation and Collapse |
| title_short | Tandem Visual Recognition of Cu<sup>2+</sup> and Chiral Tartaric Acid by Sequence Gel Formation and Collapse |
| title_sort | tandem visual recognition of cu sup 2 sup and chiral tartaric acid by sequence gel formation and collapse |
| topic | visual sensor metal–organic gel chiral recognition |
| url | https://www.mdpi.com/2310-2861/11/5/340 |
| work_keys_str_mv | AT jianzeng tandemvisualrecognitionofcusup2supandchiraltartaricacidbysequencegelformationandcollapse AT yixuanjiang tandemvisualrecognitionofcusup2supandchiraltartaricacidbysequencegelformationandcollapse AT xiaoqiyu tandemvisualrecognitionofcusup2supandchiraltartaricacidbysequencegelformationandcollapse AT shanshanyu tandemvisualrecognitionofcusup2supandchiraltartaricacidbysequencegelformationandcollapse |