TY - JOUR
T1 - New cyclen-cored dendrimers functionalized with pyrene
T2 - Synthesis characterization, optical and photophysical properties
AU - Cevallos-Vallejo, Amanda
AU - Vonlanthen, Mireille
AU - Porcu, Pasquale
AU - Ruiu, Andrea
AU - Rivera, Ernesto
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017
Y1 - 2017
N2 - 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.
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.
KW - Cyclen
KW - Dendrimer
KW - Optical properties
KW - Pyrene
UR - http://www.scopus.com/inward/record.url?scp=85013828347&partnerID=8YFLogxK
U2 - 10.1016/j.tetlet.2017.02.054
DO - 10.1016/j.tetlet.2017.02.054
M3 - Article
AN - SCOPUS:85013828347
SN - 0040-4039
VL - 58
SP - 1319
EP - 1323
JO - Tetrahedron Letters
JF - Tetrahedron Letters
IS - 13
ER -