Multi-colour electroluminescence of dendronic antennae containing pyrenes as light harvesters
Authors: Giovanella U., Mróz W., Foggi P., Fabbrizzi P., Cicchi S., Botta C.
Autors Affiliation: CNR, Ist Studio Macromol ISMAC, I-20733 Milan, Italy; European Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, FI, Italy; Univ Perugia, Dipartimento Chim, I-06123 Perugia, Italy; INOA CNR, I-50125 Florence, Italy; Univ Florence, Dipartimento Chim Organ, I-50019 Sesto Fiorentino, FI, Italy; INSTM Italian Interuniv Consortium Mat Sci & Tech, I-50019 Sesto Fiorentino, FI, Italy
Abstract: Dendronic antennae systems containing pyrene units as energy donors and a styrylpyridinium derivative as energy acceptor show efficient energy transfer from the green-emitting pyrene excimer to the red-emitting acceptor. For the third dendron generation the effective screening of the pyrene units on the acceptor provides thin films showing bright red emission. Single-layer light-emitting diodes prepared by properly balancing the dendrons and donor units concentration in polyvinylcarbazole show electroluminescence from the blue, green and red components of the monomeric donor, the donor excimer and the acceptor when excitons are generated in the polymer and subsequently transferred to the molecules by resonant energy transfer.
Volume: 11 (3) Pages from: 683 to: 688
More Information: This work was partially supported by Progetto MIUR FIRB RBIP06JWBH NODIS, FIRB RBNE033KMA, PRIN 2007PBWN44 and Project WOLED of the CARIPLO Foundation.KeyWords: dendrons; electroluminescence; energy transfer; excimer; organic light-emitting diodesDOI: 10.1002/cphc.200900771Citations: 5data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2020-02-23References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here