Abstract
A series of resorcinarene-PAMAM-porphyrin dendrimers was synthesized. The nanostructures were characterized by IR, 1H and 13C NMR, UV-vis absorption, electrospray ionization and MALDI-TOF mass spectrometry. The morphological properties were characterized by High-Resolution Transmission Electron Microscopy (HRTEM). The distance between the resorcinarene group and the porphyrin group was variable: two different lengths of the dendritic branches were synthesized, which were found to play an important role in influencing the fluorescence properties. It was also possible to observe by HRTEM microscopy that the dendrimers were nearly monodisperse, retained their size and their shape was roughly spherical. Experimental data confirmed that the PAMAM groups favored the intense emission and red shift of the maximum wavelength. It is possible that the fluorescence centers were perturbed by the inner influence between the PAMAM groups. These nanostructures could be used for the conversion of photoenergy.
Keywords: Resorcinarene, PAMAM, porphyrin, dendrimers, nanostructured multiporphyrin, spectroscopic properties.
Graphical Abstract
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
Related Books
Advances in Organic Synthesis
The Synthetic Methods, Structures, and Properties of the Ca-C σ Bond Organocalcium Containing Compounds
Advances in Organic Synthesis
Chemistry of Bipyrazoles: Synthesis and Applications
Advances in Organic Synthesis
Advanced Nanocatalysis for Organic Synthesis and Electroanalysis
Advances in Organic Synthesis
Advances in Organic Synthesis
21
4