Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Conjugated Polymer Nanoparticle–Graphene Oxide Charge-Transfer Complexes
Δημιουργός/Συγγραφέας:	Istif E. Hernández-Ferrer J. Urriolabeitia E.P. Stergiou A. [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos Fratta G. Large M.J. Dalton A.B. Benito A.M. Maser W.K.
Εκδότης:	Wiley-VCH Verlag
Ημερομηνία:	2018
Γλώσσα:	Αγγλικά
ISSN:	1616-301X
DOI:	10.1002/adfm.201707548
Περίληψη:	The game-changing role of graphene oxide (GO) in tuning the excitonic behavior of conjugated polymer nanoparticles is described for the first time. This is demonstrated by using poly(3-hexylthiophene) (P3HT) as a benchmark conjugated polymer and employing an in situ reprecipitation approach resulting in P3HT nanoparticles (P3HTNPs) with sizes of 50–100 nm in intimate contact with GO. During the self-assembly process, GO changes the crystalline packing of P3HT chains in the forming P3HTNPs from H to H/J aggregates exhibiting exciton coupling constants as low as 2 meV, indicating favorable charge separation along the P3HT chains. Concomitantly, π–π interface interactions between the P3HTNPs and GO sheets are established resulting in the creation of P3HTNPs–GO charge-transfer complexes whose energy bandgaps are lowered by up to 0.5 eV. Moreover, their optoelectronic properties, preestablished in the liquid phase, are retained when processed into thin films from the stable aqueous dispersions, thus eliminating the critical dependency on external processing parameters. These results can be transferred to other types of conjugated polymers. Combined with the possibility of employing water based “green” processing technologies, charge-transfer complexes of conjugated polymer nanoparticles and GO open new pathways for the fabrication of improved optoelectronic thin film devices.
Τίτλος πηγής δημοσίευσης:	Advanced Functional Materials
Τόμος/Κεφάλαιο:	28
Τεύχος:	23
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	charge-transfer complexes conjugated polymers graphene oxide nanoparticles self-assembly
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Όροι και προϋποθέσεις δικαιωμάτων:	All Open Access, Green
Σημειώσεις:	ENE2016-79282-C5-1-R; Horizon 2020 Framework Programme, H2020: 642742; Horizon 2020; Gobierno de Aragón: DGA T03_17R This work was funded by the European Union's Horizon 2020 research and innovation programme under the Marie Sk?odowska-Curie grant agreement no. 642742. A.M.B. and W.K.M. acknowledge the support from Spanish MINEICO (project ENE2016-79282-C5-1-R) and the Gobierno de Arag?n (Grupo Reconocido DGA T03_17R), and associated EU Regional Development Funds.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο