<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2448-5691</journal-id>
<journal-title><![CDATA[Mundo nano. Revista interdisciplinaria en nanociencias y nanotecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Mundo nano]]></abbrev-journal-title>
<issn>2448-5691</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias Aplicadas y Tecnología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-56912020000100103</article-id>
<article-id pub-id-type="doi">10.22201/ceiich.24485691e.2020.24.69612</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Formation of hexamethylbenzene: chloranil charge transfer nanocrystals]]></article-title>
<article-title xml:lang="es"><![CDATA[Formación de nanocristales de transferencia de carga de hexametilbencen: cloranil]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bennett]]></surname>
<given-names><![CDATA[Caswell R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Khatib]]></surname>
<given-names><![CDATA[Aisha]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sierchio]]></surname>
<given-names><![CDATA[Justin M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Keuren]]></surname>
<given-names><![CDATA[Edward Van]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Georgetown University Department of Physics ]]></institution>
<addr-line><![CDATA[Washington, DC ]]></addr-line>
<country>USA</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>13</volume>
<numero>24</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-56912020000100103&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-56912020000100103&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-56912020000100103&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The nucleation and growth of nanoparticles can be induced using the reprecipitation method, in which a solution is rapidly mixed with a miscible non-solvent. This method has been used to create a wide variety of organic nanoparticles, including those comprised of polymers or of small molecules. Here we demonstrate the formation of charge transfer nanocrystals of the electron donor hexamethylbenzene and electron acceptor chloranil using the reprecipitation method. We achieve the rapid mixing needed for nanoparticle formation in a number of ways: using a 3D printed vortex micromixer, a double impinging jet mixer or direct jet injection of the solution into the non-solvent. The crystal formation kinetics are characterized over times scales from 10 ms to tens of minutes using UV-Vis absorption spectroscopy and dynamic light scattering.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La nucleación y el crecimiento de nanopartículas pueden inducirse utilizando el método de reprecipitación, en el que una solución se mezcla rápidamente con un disolvente no miscible. Este método se ha utilizado para crear una amplia variedad de nanopartículas orgánicas, incluidas aquellas compuestas de polímeros o de moléculas pequeñas. Aquí demostramos la formación de nanocristales de transferencia de carga del donador de electrones hexametilbenceno al aceptor de electrones, el cloranil, utilizando el método de reprecipitación. Logramos la mezcla rápida necesaria para la formación de nanopartículas de varias maneras: usando un micro mezclador de vórtice impreso en 3D, un mezclador de chorro de doble impacto o inyección de chorro directo de la solución en el no solvente. La cinética de formación de cristales se caracteriza por escalas de tiempo de 10 ms a decenas de minutos, utilizando espectroscopía de absorción UV-Vis y dispersión dinámica de luz.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[reprecipitation method]]></kwd>
<kwd lng="en"><![CDATA[vortex mixing]]></kwd>
<kwd lng="en"><![CDATA[charge transfer crystals]]></kwd>
<kwd lng="es"><![CDATA[método de reprecipitación]]></kwd>
<kwd lng="es"><![CDATA[mezcla de vórtice]]></kwd>
<kwd lng="es"><![CDATA[cristales de transferencia de carga]]></kwd>
</kwd-group>
</article-meta>
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