دورية أكاديمية
Click nanosponge - A novel amine-rich β-cyclodextrin-based crosslinked polymer for heterogeneous catalysis.
| العنوان: | Click nanosponge - A novel amine-rich β-cyclodextrin-based crosslinked polymer for heterogeneous catalysis. |
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| المؤلفون: | Machado TF; University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal., Utzeri G; University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal., Valente AJM; University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal., Serra MES; University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal., Murtinho D; University of Coimbra, CQC-IMS, Department of Chemistry, 3004-535 Coimbra, Portugal. Electronic address: dmurtinho@ci.uc.pt. |
| المصدر: | Carbohydrate polymers [Carbohydr Polym] 2024 Feb 15; Vol. 326, pp. 121612. Date of Electronic Publication: 2023 Nov 20. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Applied Science Publishers Country of Publication: England NLM ID: 8307156 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1344 (Electronic) Linking ISSN: 01448617 NLM ISO Abbreviation: Carbohydr Polym Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: | Publication: <1992-> : Barking : Elsevier Applied Science Publishers Original Publication: London [Eng.] : Applied Science Publishers, c1981- |
| مستخلص: | Cyclodextrin-based nanosponges are promising materials for heterogeneous catalysis due to their inherent synthetic versatility, tunable porosity and nontoxicity. In this work, a primary amine-rich β-cyclodextrin nanosponge was synthesized via click imine condensation reaction between 1,6-hexamethylamine-functionalized β-cyclodextrin (CDAM) and glutaraldehyde (GLT) to afford CDGLAM, in mild conditions. The crosslinked polymer exhibited a BET surface area of 36.39 m 2 g -1 , an average pore diameter of 3.09 nm (as assessed by the BJH method), and thermal stability up to 253 °C. CDGLAM was tested as heterogeneous catalyst for the metal-free Henry and Knoevenagel reactions, between aromatic aldehydes and nitromethane or ethyl cyanoacetate, respectively, affording the products in moderate to very high yields. These results show the ease of preparation of β-CD-based nanosponges from a green chemistry perspective, as well as their potential for future use in catalytic systems. Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (Copyright © 2023 Elsevier Ltd. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Click chemistry; Cyclodextrin; Henry reaction; Heterogeneous metal-free catalysis; Knoevenagel reaction; Nanosponges |
| تواريخ الأحداث: | Date Created: 20231223 Latest Revision: 20231223 |
| رمز التحديث: | 20231224 |
| DOI: | 10.1016/j.carbpol.2023.121612 |
| PMID: | 38142073 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1879-1344 |
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| DOI: | 10.1016/j.carbpol.2023.121612 |