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Journal of Dispersion Science and Technology Volume 24, 2003 - Issue 5
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Original Articles

Kinetics of the Growth of Anthracene Nanoparticles

Edward Van Keuren Department of Physics, Georgetown University, 37th and O Streets, NW, Washington, District of Columbia, 20057, USACorrespondence[email protected]
,
Elena Georgieva Department of Physics, Georgetown University, 37th and O Streets, NW, Washington, District of Columbia, 20057, USA
&
Michael Durst Department of Physics, Georgetown University, 37th and O Streets, NW, Washington, District of Columbia, 20057, USA
Pages 721-729 | Received 23 Jun 2002, Accepted 20 Jan 2003, Published online: 06 Feb 2007
 
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Abstract

Nanocrystals of anthracene were formed by “solvent shifting”—reducing the solute solubility by changing the ratio of two components of a binary solvent. Dispersions of slowly‐growing nanoparticles with sizes ranging from 100 to 1000 nm were prepared in an acetone/water binary solvent. A model of the growth was developed that described the rapid initial increase in particle size over several minutes, followed by much slower growth over several hours to days. Dynamic light scattering (DLS) measurements of particle size could be described well using this model. UV–VIS and fluorescence spectra suggest that the anthracene particles are crystalline, and exist in equilibrium with molecular anthracene in solution.

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