Print Email Facebook Twitter Substitution Effects on the Photoinduced Charge-Transfer Properties of Novel Perylene-3,4,9,10-tetracarboxylic Acid Derivatives Title Substitution Effects on the Photoinduced Charge-Transfer Properties of Novel Perylene-3,4,9,10-tetracarboxylic Acid Derivatives Author Inan, D. (TU Delft ChemE/Opto-electronic Materials) Dubey, R. (TU Delft ChemE/Opto-electronic Materials) Westerveld, N. (TU Delft ChemE/O&O groep) Bleeker, J.J. (TU Delft ChemE/Product and Process Engineering) Jager, W.F. (TU Delft OLD ChemE/Organic Materials and Interfaces) Grozema, F.C. (TU Delft ChemE/Opto-electronic Materials) Date 2017 Abstract We report here the synthesis and photophysical study of a series of electron donor–acceptor molecules, in which electron-donating 4-methoxyphenoxy groups are attached to the 1,7-bay positions of four different perylene tetracarboxylic acid derivatives, namely, perylene tetraesters 1, perylene monoimide diesters 2, perylene bisimides 3, and perylene monobenzimidazole monoimides 4. These perylene derivatives are used because of their increasing order of electron-accepting capability upon moving from 1 to 4. Two additional donor–acceptor molecules are synthesized by linking electron-donating 4-methoxyphenyl groups to the imide position of perylene monoimide diester 2 and perylene bisimide 3. The motivation for this study is to achieve a good control over the photoinduced charge-transfer (CT) process in perylene-based systems by altering the position of electron donors and tuning the electron deficiency of perylene core. A comprehensive study of the photophysical properties of these molecules has shown a highly systematic trend in the magnitude of CT as a function of increased electron deficiency of the perylene core and solvent polarity. Importantly, just by changing the attachment of electron-donating group from “bay” to “imide” position, we are able to block the CT process. This implies that the positioning of the electron donor at the perylene core strongly influences the kinetics of the photoinduced CT process. In these compounds, the CT process is characterized by the quenching of fluorescence and singlet excited-state lifetimes as compared to model compounds bearing non-electron-donating 4-tert-butylphenoxy groups. Transient absorption spectroscopy did not reveal spectra of CT states. This most likely implies that the CT state is not accumulated, because of the faster charge recombination. To reference this document use: http://resolver.tudelft.nl/uuid:6d707ad8-faa0-4fba-9661-e06dabcbd8ff DOI https://doi.org/10.1021/acs.jpca.7b03806 ISSN 1089-5639 Source The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, 121 (24), 4633-4644 Part of collection Institutional Repository Document type journal article Rights © 2017 D. Inan, R. Dubey, N. Westerveld, J.J. Bleeker, W.F. Jager, F.C. Grozema Files PDF acs.jpca.7b03806.pdf 2.15 MB Close viewer /islandora/object/uuid:6d707ad8-faa0-4fba-9661-e06dabcbd8ff/datastream/OBJ/view