Abstract
New cyclen (1,4,7,10-teraazacyclododecane) cored dendrimers up to the second generation, functionalized with 4, 8 and 16 pyrene units, respectively, were synthesized following a convergent procedure. All new compounds were characterized by NMR spectroscopies and ESI or MALDI TOF mass spectrometry. The optical and photophysical properties of the new dendrimers were studied in THF solution. Absorption spectra showed the typical absorption bands of pyrene moieties. In the fluorescence spectra, monomer as well as excimer emission were observed for all compounds. An increased proportion of excimer emission was observed in the dendrimer of the highest generation.
| Original language | English |
|---|---|
| Pages (from-to) | 1319-1323 |
| Number of pages | 5 |
| Journal | Tetrahedron Letters |
| Volume | 58 |
| Issue number | 13 |
| DOIs | |
| State | Published - 2017 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2017 Elsevier Ltd
Funding
We thank Gerardo Cedillo, María de los Ángeles Peña, Elizabeth Huerta, Lucero Rios, Carmen Marquez and Salvador López for their assistance in the characterization of all the compounds. We are also grateful to CONACYT (Project 253155) and PAPIIT (Project IN-100316). M.V. is grateful to the Swiss National Science Foundation for a postdoctoral fellowship (P2ZHP2-148707).
| Funders | Funder number |
|---|---|
| Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung | P2ZHP2-148707 |
| Consejo Nacional de Ciencia y Tecnología | 253155, IN-100316 |
Keywords
- Cyclen
- Dendrimer
- Optical properties
- Pyrene