<?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>1665-6423</journal-id>
<journal-title><![CDATA[Journal of applied research and technology]]></journal-title>
<abbrev-journal-title><![CDATA[J. appl. res. technol]]></abbrev-journal-title>
<issn>1665-6423</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>S1665-64232017000400346</article-id>
<article-id pub-id-type="doi">10.1016/j.jart.2017.03.002</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[New acid dyes and their metal complexes based on substituted phenols for leather: Synthesis, characterization and optical studies]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hussain]]></surname>
<given-names><![CDATA[Ghulam]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Abass]]></surname>
<given-names><![CDATA[Nasir]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Shabir]]></surname>
<given-names><![CDATA[Ghulam]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Athar]]></surname>
<given-names><![CDATA[Makshoof]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saeed]]></surname>
<given-names><![CDATA[Aamer]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saleem]]></surname>
<given-names><![CDATA[Rashid]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ali]]></surname>
<given-names><![CDATA[Farman]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Khan]]></surname>
<given-names><![CDATA[Misbahul Ain]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of the Punjab Institute of Chemistry ]]></institution>
<addr-line><![CDATA[Lahore ]]></addr-line>
<country>Pakistan</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Quaid-I-Azam University Department of Chemistry ]]></institution>
<addr-line><![CDATA[Islamabad ]]></addr-line>
<country>Pakistan</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,R&amp;D Manager Shafi Reso Chem  ]]></institution>
<addr-line><![CDATA[Lahore ]]></addr-line>
<country>Pakistan</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Hazara University Department of Chemistry ]]></institution>
<addr-line><![CDATA[Mansehra ]]></addr-line>
<country>Pakistan</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,The Islamia University of Bahawalpur Department of Chemistry ]]></institution>
<addr-line><![CDATA[Bahawalpur ]]></addr-line>
<country>Pakistan</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<volume>15</volume>
<numero>4</numero>
<fpage>346</fpage>
<lpage>355</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-64232017000400346&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-64232017000400346&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-64232017000400346&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The present investigation deals with synthesis of new acid dyes from 4-amino-1-(4-sulfophenyl)-3-methyl-5-pyrazolone and phenol derivatives and their metal complexes (Cu (II) and Fe (II)). The phenol derivatives include 4-chlorophenol, 4-nitrophenol, 4-hydroxybenzene sulfonic acid, 2-nitrophenol-4-sulfonic acid, resorcinol and bisphenol A and bisphenol S. The newly synthesized dyes were applied to crust leather to assess their dyeing properties. The fastness properties of unmetallized dyes were less as compared to metal complexes due to the strong interaction of metals with leather protein. The structures of these dyes were also confirmed by UV, FTIR and NMR studies.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[4-Amino-1-(4-sulfophenyl)-3-methyl-5-pyrazolone]]></kwd>
<kwd lng="en"><![CDATA[Phenol derivatives]]></kwd>
<kwd lng="en"><![CDATA[Metal complexes]]></kwd>
<kwd lng="en"><![CDATA[Applications]]></kwd>
</kwd-group>
</article-meta>
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