TY - JOUR
T1 - Exfoliation and supramolecular functionalization of graphene with an electron donor perylenediimide derivative
AU - Martín-Gomis, Luis
AU - Karousis, Nikos
AU - Fernández-Lázaro, Fernando
AU - Petsalakis, Ioannis D.
AU - Ohkubo, Kei
AU - Fukuzumi, Shunichi
AU - Tagmatarchis, Nikos
AU - Sastre-Santos, Angela
N1 - Funding Information:
Financial support for this research by the Spanish Ministry of Economy and Competitiveness (Mineco) of Spain (CTQ2014-55798-R and CTQ2015-71936-REDT), Generalitat Valenciana (Prometeo 2012/010) and by GSRT/NSRF 2007-2013 through action “ARISTEIA II” project FUNGRAPH (3150) “Functionalization of graphene with multichromophoric arrays of photoactive units for energy conversion” is acknowledged. We are indebted to Prof. Nori Shinohara and his group at Nagoya University for kindly acquiring TEM images.
Publisher Copyright:
© The Royal Society of Chemistry and Owner Societies.
PY - 2017
Y1 - 2017
N2 - The liquid exfoliation of graphite to few layered graphene sheets together with the non-covalent supramolecular functionalization of exfoliated graphene by the synthesized N,N′-di(2-ethylhexyl)-1-(N′′′′-methylpiperazin-N′′′-yl)perylene-3,4,9,10-tetracarboxydiimide (Pip-PDI) is reported. The aromatic Pip-PDI has the ability to non-covalently interact with the exfoliated graphene sheets, stabilizing them and preventing their reassembly. On the other hand, the presence of the piperazine moiety on the bay position of the PDI core makes it an ideal electron donor, nicely coupled with the electron accepting exfoliated graphene, hence, forming a novel donor-acceptor nanoensemble, which was characterized by complementary spectroscopic and microscopy techniques. Theoretical calculations predicted the absence of a meaningful charge-separated state within the Pip-PDI/graphene ensemble, which was also proven by time-resolved fluorescence and transient absorption measurements.
AB - The liquid exfoliation of graphite to few layered graphene sheets together with the non-covalent supramolecular functionalization of exfoliated graphene by the synthesized N,N′-di(2-ethylhexyl)-1-(N′′′′-methylpiperazin-N′′′-yl)perylene-3,4,9,10-tetracarboxydiimide (Pip-PDI) is reported. The aromatic Pip-PDI has the ability to non-covalently interact with the exfoliated graphene sheets, stabilizing them and preventing their reassembly. On the other hand, the presence of the piperazine moiety on the bay position of the PDI core makes it an ideal electron donor, nicely coupled with the electron accepting exfoliated graphene, hence, forming a novel donor-acceptor nanoensemble, which was characterized by complementary spectroscopic and microscopy techniques. Theoretical calculations predicted the absence of a meaningful charge-separated state within the Pip-PDI/graphene ensemble, which was also proven by time-resolved fluorescence and transient absorption measurements.
UR - http://www.scopus.com/inward/record.url?scp=85017515979&partnerID=8YFLogxK
U2 - 10.1039/c6pp00351f
DO - 10.1039/c6pp00351f
M3 - Article
C2 - 28165094
AN - SCOPUS:85017515979
SN - 1474-905X
VL - 16
SP - 596
EP - 605
JO - Photochemical and Photobiological Sciences
JF - Photochemical and Photobiological Sciences
IS - 4
ER -