New cyclen-cored dendrimers functionalized with pyrene: Synthesis characterization, optical and photophysical properties

Amanda Cevallos-Vallejo; Mireille Vonlanthen; Pasquale Porcu; Andrea Ruiu; Ernesto Rivera

doi:10.1016/j.tetlet.2017.02.054

New cyclen-cored dendrimers functionalized with pyrene: Synthesis characterization, optical and photophysical properties

Amanda Cevallos-Vallejo, Mireille Vonlanthen, Pasquale Porcu, Andrea Ruiu, Ernesto Rivera^*

^*Autor correspondiente de este trabajo

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

18 Citas (Scopus)

Resumen

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.

Idioma original	Inglés
Páginas (desde-hasta)	1319-1323
Número de páginas	5
Publicación	Tetrahedron Letters
Volumen	58
N.º	13
DOI	https://doi.org/10.1016/j.tetlet.2017.02.054
Estado	Publicada - 2017
Publicado de forma externa	Sí

Nota bibliográfica

Publisher Copyright:
© 2017 Elsevier Ltd

Financiación

Financiadores	Número del financiador
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	P2ZHP2-148707
Consejo Nacional de Ciencia y Tecnología	253155, IN-100316

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10.1016/j.tetlet.2017.02.054

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AU - Porcu, Pasquale

AU - Ruiu, Andrea

AU - Rivera, Ernesto

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AB - 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.

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