Light-emitting dendrimer film morphology: A neutron reflectivity study

S. V. Vickers, H. Barcena, K. A. Knights, R. K. Thomas, Jean Charles Maurice Ribierre, S. Gambino, I. D W Samuel, P. L. Burn, Giovanna Fragneto

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We have used neutron reflectivity (NR) measurements to probe the physical structure of phosphorescent dendrimer films. The dendrimers consisted of fac-tris(2-phenylpyridyl)iridium(III) cores, biphenyl-based dendrons (first or second generation), and perdeuterated 2-ethylhexyloxy surface groups. We found that the shape and hydrodynamic radius of the dendrimer were both important factors in determining the packing density of the dendrimers. "Cone" shaped dendrimers were found to pack more effectively than "spherical" dendrimers even when the latter had a smaller radius. The morphology of the films determined by NR was consistent with the measured photoluminescence and charge transporting properties of the materials.

Original languageEnglish
Article number263302
JournalApplied Physics Letters
Volume96
Issue number26
DOIs
Publication statusPublished - Jun 28 2010

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dendrimers
reflectance
neutrons
radii
packing density
iridium
cones
hydrodynamics
photoluminescence
probes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Vickers, S. V., Barcena, H., Knights, K. A., Thomas, R. K., Ribierre, J. C. M., Gambino, S., ... Fragneto, G. (2010). Light-emitting dendrimer film morphology: A neutron reflectivity study. Applied Physics Letters, 96(26), [263302]. https://doi.org/10.1063/1.3457438

Light-emitting dendrimer film morphology : A neutron reflectivity study. / Vickers, S. V.; Barcena, H.; Knights, K. A.; Thomas, R. K.; Ribierre, Jean Charles Maurice; Gambino, S.; Samuel, I. D W; Burn, P. L.; Fragneto, Giovanna.

In: Applied Physics Letters, Vol. 96, No. 26, 263302, 28.06.2010.

Research output: Contribution to journalArticle

Vickers, SV, Barcena, H, Knights, KA, Thomas, RK, Ribierre, JCM, Gambino, S, Samuel, IDW, Burn, PL & Fragneto, G 2010, 'Light-emitting dendrimer film morphology: A neutron reflectivity study', Applied Physics Letters, vol. 96, no. 26, 263302. https://doi.org/10.1063/1.3457438
Vickers SV, Barcena H, Knights KA, Thomas RK, Ribierre JCM, Gambino S et al. Light-emitting dendrimer film morphology: A neutron reflectivity study. Applied Physics Letters. 2010 Jun 28;96(26). 263302. https://doi.org/10.1063/1.3457438
Vickers, S. V. ; Barcena, H. ; Knights, K. A. ; Thomas, R. K. ; Ribierre, Jean Charles Maurice ; Gambino, S. ; Samuel, I. D W ; Burn, P. L. ; Fragneto, Giovanna. / Light-emitting dendrimer film morphology : A neutron reflectivity study. In: Applied Physics Letters. 2010 ; Vol. 96, No. 26.
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