Efficient Microwave-Assisted Synthesis of Sonogashira-Coupled Perylene Monoimide Derivatives: Impact of Electron-Donating Groups on Optoelectronic Properties
作者:Vikas Sharma、Falguni Chandra、Dhananjaya Sahoo、Apurba L. Koner
DOI:10.1002/ejoc.201701310
日期:2017.12.15
Faster than conventional coupling: A simple microwave‐assisted protocol for the synthesis of a series of peri‐coupled perylene monoimide derivatives by Sonogashira coupling is reported. This method is significantly faster than the conventional coupling method and provides products with interesting optoelectronic properties in moderate to good yields.
Energy Flow Dynamics within Cofacial and Slip-Stacked Perylene-3,4-dicarboximide Dimer Models of π-Aggregates
作者:Rebecca J. Lindquist、Kelly M. Lefler、Kristen E. Brown、Scott M. Dyar、Eric A. Margulies、Ryan M. Young、Michael R. Wasielewski
DOI:10.1021/ja507653p
日期:2014.10.22
strong. Here, five covalentlybound PMI dimers with varying degrees of electronic interaction were studied to probe the relative chromophore orientations that lead to excimer energy trap states. Femtosecond near-infrared transient absorption spectroscopy was used to observe the growth of a low-energy transition at ~1450-1520 nm characteristic of the excimer state in these covalentdimers. The excimer-state
Photophysics and Redox Properties of Rylene Imide and Diimide Dyes Alkylated Ortho to the Imide Groups
作者:Joseph E. Bullock、Michael T. Vagnini、Charusheela Ramanan、Dick T. Co、Thea M. Wilson、Jay W. Dicke、Tobin J. Marks、Michael R. Wasielewski
DOI:10.1021/jp908679c
日期:2010.2.11
naphthalene-1,4:5,8-bis(dicarboximide) (NI), perylene-3,4-dicarboximide (PMI), perylene-3,4:9,10-bis(dicarboximide) (PDI), and terrylene-3,4:11,12-bis(dicarboximide) (TDI). The monoimides were dialkylated, while the diimides were tetraalkylated, with the exception of NI, which could only be dialkylated due to steric hindrance. The absorption, fluorescence, transient absorption spectra, and lowest excited
Tuning the Electron Acceptor in Phthalocyanine‐Based Electron Donor–Acceptor Conjugates
作者:Michael Sekita、Ángel J. Jiménez、M. Luisa Marcos、Esmeralda Caballero、M. Salomé Rodríguez‐Morgade、Dirk M. Guldi、Tomás Torres
DOI:10.1002/chem.201503237
日期:2015.12.21
photoinduced electron transfer. For ZnPc‐PMIMA 10, electron transfer occurs upon both ZnPc and PMIMA excitation, giving rise to a long‐lived (340 ps) charge‐separated state. For ZnPc‐PMI 1 and ZnPc‐PMA 2, stabilization of the radical ion pair states by using polar media is necessary. In THF, photoexcitation of either ZnPc or PMI/PMA produces charge‐separated states with lifetimes of 375 and 163 ps, respectively