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

被引：16
作者：
Cevallos-Vallejo, Amanda [1 ]
Vonlanthen, Mireille [1 ]
Porcu, Pasquale [1 ]
Ruiu, Andrea [1 ]
Rivera, Ernesto [1 ]
机构：
[1] Univ Nacl Autonoma Mexico, Inst Invest Mat, Circuit Exterior, Ciudad Univ, Mexico City 04510, DF, Mexico
来源：
TETRAHEDRON LETTERS | 2017年 / 58卷 / 13期
关键词：
Pyrene; Cyclen; Dendrimer; Optical properties; RESONANCE ENERGY-TRANSFER; CARBON NANOTUBES; COMPLEXES; LUMINESCENCE; LIGANDS; SIZE; YTTERBIUM; RUTHENIUM; EMISSION; RECEPTOR;
D O I：
10.1016/j.tetlet.2017.02.054
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
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. (C) 2017 Elsevier Ltd. All rights reserved.
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收藏
页码：1319 / 1323
页数：5
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