Abstract
Various ligation processes have recently become a powerful tool in synthetic polymer chemistry. Herein, the use of a new photochemical ligation process as a versatile approach for the cross-linking polymerization, functionalization of polymer chain ends, and surface modification of various materials such as silica and graphene oxide, is demonstrated. The process is based on the formation of urethane linkages by the reaction of photochemically in situ generated isocyanates from benzoyl azides with hydroxyl moieties in the presence of organobase, bicyclo[2.2.2]-1,4-diazaoctane (DABCO) under ambient conditions. The intermediates and obtained materials are characterized by NMR, FTIR, TGA, and TEM analyses. It is believed that this simple and efficient ligation process will expand future applications to fabricate complex macromolecular structures, biomaterials, and gels.
| Original language | English |
|---|---|
| Article number | 2100166 |
| Journal | Macromolecular Rapid Communications |
| Volume | 42 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - Jul 2021 |
Bibliographical note
Publisher Copyright:© 2021 Wiley-VCH GmbH
Funding
The authors would like to acknowledge the financial support from The Scientific and Technological Research Council of Turkey (Project Number: 120C121) and Istanbul Technical University Research Fund (Project Number: 42851). The authors would like to thank KUYTAM (Koç University Surface Technologies Research Center) for AFM, SEM, and XPS characterizations. One of the authors, A.K., would like to thank the Council of Higher Education of Turkey for 100/2000 CoHE Doctoral Scholarship and TUBITAK 2211-A National Graduate Scholarship. The authors would like to acknowledge the financial support from The Scientific and Technological Research Council of Turkey (Project Number: 120C121) and Istanbul Technical University Research Fund (Project Number: 42851). The authors would like to thank KUYTAM (Koç University Surface Technologies Research Center) for AFM, SEM, and XPS characterizations. One of the authors, A.K., would like to thank the Council of Higher Education of Turkey for 100/2000 CoHE Doctoral Scholarship and TUBITAK 2211‐A National Graduate Scholarship.
| Funders | Funder number |
|---|---|
| Council of Higher Education of Turkey | |
| KUYTAM | |
| Türkiye Bilimsel ve Teknolojik Araştirma Kurumu | 120C121 |
| Istanbul Teknik Üniversitesi | 42851 |
Keywords
- Curtius rearrangement
- benzoyl azide
- ligation
- photochemistry
- surface modification