Strauß V, Schäfer R, Hauke F, Hirsch A, Guldi DM (2015)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2015
Publisher: American Chemical Society
Book Volume: 137
Pages Range: 13079-13086
Journal Issue: 40
DOI: 10.1021/jacs.5b07896
Understanding the phenomenon of intense photoluminescence in carbon materials such as hydrogenated graphene, graphene nanoribbons, and so forth is at the forefront of investigations. In this study, six different types of hydrogenated graphene (phG) produced from different starting materials were fully characterized in terms of structure and optical spectroscopy. Comprehensive photoluminescence lifetime analyses of phGs were conducted by combining time-correlated single-photon counting with steady-state fluorescence spectroscopy and femtosecond transient absorption spectroscopy. The conclusion drawn from these assays is that graphene islands with diameters in the range from 1.1 to 1.75 nm reveal band gap photoluminescence between 450 and 800 nm. As a complement, phGs were implemented in hybrids with water-soluble electron accepting perylenediimides (PDIs). By virtue of mutual π-stacking and charge transfer interactions with graphene islands, PDIs assisted in stabilizing aqueous dispersion of phG. Implicit in these ground state interactions is the formation of 300 ps lived charge separated states once photoexcited.
APA:
Strauß, V., Schäfer, R., Hauke, F., Hirsch, A., & Guldi, D.M. (2015). Polyhydrogenated Graphene: Excited State Dynamics in Photo- and Electroactive Two-Dimensional Domains. Journal of the American Chemical Society, 137(40), 13079-13086. https://dx.doi.org/10.1021/jacs.5b07896
MLA:
Strauß, Volker, et al. "Polyhydrogenated Graphene: Excited State Dynamics in Photo- and Electroactive Two-Dimensional Domains." Journal of the American Chemical Society 137.40 (2015): 13079-13086.
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