Katsukis G, Malig J, Schulz-Drost C, Leubner S, Jux N, Guldi DM (2012)
Publication Type: Journal article, Original article
Publication year: 2012
Original Authors: Katsoukis G., Malig J., Schulz-Drost C., Leubner S., Jux N., Guldi D.M.
Publisher: American Chemical Society
Book Volume: 6
Pages Range: 1915-1924
Journal Issue: 3
DOI: 10.1021/nn204700z
Herein, we report for the first time on a full-fledged investigation of water-soluble CdTe quantum dots (QD) that are immobilized onto exfoliated graphite (EG) and/or nanographene (NG). Particular emphasis was placed on a top-down preparation of stable aqueous dispersions-starting from natural graphite rather than graphene oxide-while preserving the intrinsic properties of graphene. To this end, we circumvented the harsh conditions commonly employed for the pre-exfoliation (i.e., Hummers method). First, a hydrophobic- hydrophobic/π-π stacking motif was tested between EG and pyrene, to which QDs are covalently attached (QD-pyrene). Second, we employed the combination of hydrophobic-hydrophobic/π-π stacking and electrostatic interactions to build up hierarchical structures composed of NG, positively charged pyrene (pyrene ), and negatively charged QDs. The novel nanohybrids-QD- pyrene/EG and QD/pyrene /NG-were characterized with specific emphasis on electron-transfer chemistry. In fact, both assays provide kinetic and spectroscopic evidence that support electron transfer dynamics that vary, however, between EG and NG as a reflection of the different degree of graphite exfoliation. © 2012 American Chemical Society.
APA:
Katsukis, G., Malig, J., Schulz-Drost, C., Leubner, S., Jux, N., & Guldi, D.M. (2012). Toward combining graphene and QDs: Assembling CdTe QDs to exfoliated graphite and nanographene in water. Acs Nano, 6(3), 1915-1924. https://dx.doi.org/10.1021/nn204700z
MLA:
Katsukis, Georgios, et al. "Toward combining graphene and QDs: Assembling CdTe QDs to exfoliated graphite and nanographene in water." Acs Nano 6.3 (2012): 1915-1924.
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