Tautz, Markus and Saldias, Cesar and Diego Lozano-Gorrin, Antonio and Diaz Diaz, David (2019) Use of a bis-1,2,3-triazole gelator for the preparation of supramolecular metallogels and stabilization of gold nanoparticles. NEW JOURNAL OF CHEMISTRY, 43 (35). pp. 13850-13856. ISSN 1144-0546, 1369-9261
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In this work we have applied a double isosteric substitution of the amide groups presented in the gelator N,N '-((1S,2S)-cyclohexane-1,2-diyl)didodecanamide (C-12-Cyc) by 1,2,3-triazole rings affording the corresponding isosteric gelator (click-C-12-Cyc). This approach enabled the preparation of different metallogels and fine-tuning their properties. In particular, C-12-Cyc was found to form stable and reversible metallogels with Pd-II and Au-III in DMSO and DMF, whereas click-C-12-Cyc formed metallogels in these solvents only in the presence of Au-III. Comparing the gels made of C-12-Cycvs.click-C-12-Cyc in the presence of HAuCl4 center dot 3H(2)O, the former showed higher T-gel values and 5-8 times slower gelation kinetics. Furthermore, the incorporation of Et3N as reducing agent in the formulations facilitated the in situ formation of non-aggregated gold nanoparticles embedded in the viscoelastic networks made of either pure isosteres or with an equimolar mixture of click-C-12-Cyc and C-12-Cyc. So-formed NPs showed similar size distribution regardless the gold concentration and the nature of the gelator system.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TRIAZOLE ISOSTERIC SUBSTITUTION; IN-SITU REDUCTION; ORGANIC-SOLVENTS; METAL; GELS; COORDINATION; ORGANOGELS; HYDROGELS; ACID; OLIGO(P-PHENYLENEVINYLENE); |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Prof. Dr. David Díaz Díaz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Mar 2020 11:44 |
| Last Modified: | 27 Mar 2020 11:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/26230 |
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