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Eichhorn, S.H. (author), Shuai, C. (author), Ahmida, M. (author), Demenev, A. (author), Kayal, H. (author), Raad, F.S. (author), Kaafarani, B.R. (author), Patwardhan, S. (author), Grozema, F.C. (author), Siebbeles, L.D.A. (author), Taerum, T. (author), Perepichka, D.F. (author), Klenkler, R. (author)Donor-acceptor structures have recently gained great popularity for the design of low band gap polymeric organic semiconductors. Presented here is a first systematic study of organic semiconductors based on columnar liquid crystals that consist of discotic and board-shaped donor-acceptor structures. The discotic benzotristhiophenetricarboxamide...conference paper 2011
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Prins, P. (author), Grozema, F.C. (author), Schins, J.M. (author), Patil, S. (author), Scherf, U. (author), Siebbeles, L.D.A. (author)The high frequency mobility of charge carriers on isolated ladder-type polymer chains with lengths ranging from 13 to 54 monomer units was measured. Experiments were performed on isolated chains in dilute solution and on bulk solid samples. The ac mobility of charge carriers measured at a microwave frequency near 30 GHz is strongly dependent on...conference paper 2006
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Grozema, F.C. (author)Conjugated polymers are of considerable current interest because of their semi-conducting and light-emitting properties. These properties, combined with their relatively low cost and good processability as compared to inorganic semiconductors, make them attractive candidates for application in plastic electronic devices. Conjugated polymers are...doctoral thesis 2003
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Prins, P. (author), Grozema, F.C. (author), Nehls, B.S. (author), Farrell, T. (author), Scherf, U. (author), Siebbeles, L.D.A. (author)Alkyl substituted polyfluorenes are promising candidates for use in organic display applications due to efficient, pure blue (polarized) luminescence, high charge carrier mobility, and good processabilty. Poly(9,9?-dioctylfluorene) (PFO) is an especially interesting polyfluorene derivative, because of its self-organization into distinct...journal article 2006
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Renaud, N. (author), Grozema, F.C. (author)We report numerical simulations of biexciton generation in coupled quantum dots (CQDs) placed in a static electric field and excited by a chirped laser pulse. Our simulations explicitly account for exciton-phonon interactions at finite temperature using a non-Markovian quantum jump approach to solve the excitonic dynamics. In the case of...journal article 2014
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- Prins, P. (author), Grozema, F.C. (author), Schins, J.M. (author), Savenije, T.J. (author), Patil, S. (author), Scherf, U. (author), Siebbeles, L.D.A. (author) journal article 2006
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Günba?, D.D. (author), Xue, C. (author), Patwardhan, S. (author), Fravventura, M.C. (author), Zhang, H. (author), Jager, W.F. (author), Sudhölter, E.J.R. (author), Laurens, D.A. (author), Siebbeles, L.D.A. (author), Savenije, T.J. (author), Jin, S. (author), Grozema, F.C. (author)In this communication we report on the synthesis and charge mobility of highly soluble perylenebisimid derivatives.We show that introduction of alkylester side chains results in compounds combining a high solubility with charge mobilities up to 0.22 cm2 V_1 s_1. These materials are therefore interesting as an electron acceptor for solution...journal article 2014
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Dubey, R.K. (author), Inan, D. (author), Sengupta, S. (author), Sudhölter, E.J.R. (author), Grozema, F.C. (author), Jager, W.F. (author)We report the synthesis and excited-state dynamics of a series of five bichromophoric light-harvesting antenna systems, which are capable of efficient harvesting of solar energy in the spectral range of 350–580 nm. These antenna systems have been synthesized in a modular fashion by the covalent attachment of blue light absorbing naphthalene...journal article 2016
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Grozema, F.C. (author), Candeias, L.P. (author), Swart, M. (author), Van Duijnen, P.T. (author), Wildeman, J. (author), Hadziioanou, G. (author), Siebbeles, L.D.A. (author), Warman, J.M. (author)In this paper a combined experimental and quantum chemical study of the geometry and opto-electronic properties of unsubstituted and dialkoxy-sustituted phenylene–vinylene oligomers (PV’s) is presented. The optical absorption spectra for PV cations with different chain lengths and substitution patterns were measured using pulse radiolysis with...journal article 2002
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Kocherzhenko, A.A. (author), Grozema, F.C. (author), Siebbeles, L.D.A. (author)This paper explores charge transport at the single molecule level. The conductive properties of both small organic molecules and conjugated polymers (molecular wires) are considered. In particular, the reasons for the transition from fully coherent to incoherent charge transport and the approaches that can be taken to describe this transition...journal article 2010
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Galán, E. (author), Perrin, M.L. (author), Lutz, M. (author), Van der Zant, H.S.J. (author), Grozema, F.C. (author), Eelkema, R. (author)We have described the synthesis of novel biphenylethane-based wires for molecular electronics. Exceptional single-molecule diode behavior was predicted for unsymmetrically substituted biphenylethane derivatives, synthesized here using the so far unexplored unsymmetrically substituted 1,2-bis(4-bromophenyl)ethanes as key intermediates, which were...journal article 2016
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Aerts, M. (author), Bielewicz, T. (author), Klinke, C. (author), Grozema, F.C. (author), Houtepen, A.J. (author), Schins, J.M. (author), Siebbeles, L.D.A. (author)Semiconductor nanocrystals are promising for use in cheap and highly efficient solar cells. A high efficiency can be achieved by carrier multiplication (CM), which yields multiple electron-hole pairs for a single absorbed photon. Lead chalcogenide nanocrystals are of specific interest, since their band gap can be tuned to be optimal to exploit...journal article 2014
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Gorczak, N. (author), Swart, M. (author), Grozema, F.C. (author)We calculated the energy landscape of charged molecules that is determined by electrostatic and induction interaction using the fully polarizable force field DRF90 in the bulk and at interfaces of the electron accepting material C60, and two exemplary electron donating materials pentacene and phthalocyanine. In particular, we compared the energy...journal article 2014
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Grozema, F.C. (author), Telesca, R. (author), Jonkman, H.T. (author), Siebbeles, L.D.A. (author), Snijders, J.G. (author)In this paper, time-dependent density functional theory (TDDFT) calculations of excited state polarizabilities of conjugated molecules are presented. The increase in polarizability upon excitation was obtained by evaluating the dependence of the excitation energy on an applied static electric field. The excitation energy was found to vary...journal article 2001
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Grozema, F.C. (author), Telesca, R. (author), Snijders, J.G. (author), Siebbeles, L.D.A. (author)This paper discusses a time-dependent density functional theory study of the effect of molecular structure on the excited state polarizability of conjugated molecules. A short phenylenevinylene oligomer containing three phenyl rings (PV2, distyryl benzene) is taken as a model system. Introduction of methyl substituents is shown to have only a...journal article 2003
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Gorczak, N. (author), Renaud, N. (author), Galan, E. (author), Eelkema, R. (author), Siebbeles, L.D.A. (author), Grozema, F.C. (author)Quantum interference is a well-known phenomenon that dictates charge transport properties of single molecule junctions. However, reports on quantum interference in donor-bridge-acceptor molecules are scarce. This might be due to the difficulties in meeting the conditions for the presence of quantum interference in a donor-bridge-acceptor system....journal article 2016
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Pratihar, P. (author), Ghosh, S. (author), Stepanenko, V. (author), Patwardhan, S. (author), Grozema, F.C. (author), Siebbeles, L.D.A. (author), Würthner, F. (author)A bis(trialkoxybenzamide)-functionalized quaterthiophene derivative was synthesized and its self-assembly properties in solution were studied. In non-polar solvents such as cyclohexane, this quaterthiophene ?-system formed fibril aggregates with an H-type molecular arrangement due to synergistic effect of hydrogen bonding and ?-stacking. The...journal article 2010
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- Prins, P. (author), Grozema, F.C. (author), Schins, J.M. (author), Patil, S. (author), Scherf, U. (author), Siebbeles, L.D.A. (author) journal article 2006
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Frisenda, R. (author), Tarkuc, S. (author), Galan, E. (author), Perrin, M.L. (author), Eelkema, R. (author), Grozema, F.C. (author), Van der Zant, H.S.J. (author)We report on an experimental investigation of transport through single molecules, trapped between two gold nano-electrodes fabricated with the mechanically controlled break junction (MCBJ) technique. The four molecules studied share the same core structure, namely oligo(phenylene ethynylene) (OPE3), while having different aurophilic anchoring...journal article 2015
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Senthilkumar, K. (author), Grozema, F.C. (author), Bickelhaupt, F.M. (author), Siebbeles, L.D.A. (author)Values of charge transfer integrals, spatial overlap integrals and site energies involved in transport of positive charges along columnar stacked triphenylene derivatives are provided. These parameters were calculated directly as the matrix elements of the Kohn–Sham Hamiltonian, defined in terms of the molecular orbitals on individual...journal article 2003