<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ribeiro, Celso</style></author><author><style face="normal" font="default" size="100%">Brogueira, Pedro</style></author><author><style face="normal" font="default" size="100%">Lavareda, Guilherme</style></author><author><style face="normal" font="default" size="100%">de Carvalho, Carlos Nunes</style></author><author><style face="normal" font="default" size="100%">Amaral, Ana</style></author><author><style face="normal" font="default" size="100%">Santos, Luis</style></author><author><style face="normal" font="default" size="100%">Morgado, Jorge</style></author><author><style face="normal" font="default" size="100%">Scherf, Ulrich</style></author><author><style face="normal" font="default" size="100%">Bonifacio, Vasco D. B.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Ultrasensitive microchip sensor based on boron-containing polyfluorene nanofilms</style></title><secondary-title><style face="normal" font="default" size="100%">BIOSENSORS &amp; BIOELECTRONICS</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">DEC 15</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">26</style></volume><pages><style face="normal" font="default" size="100%">1662-1665</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;A fluorene-based pi-conjugated copolymer with on-chain dibenzoborole units was used in the development of a nanocoated gold interdigitated microelectrode array device which successfully detects fluoride in a broad range of concentrations (10(-11)-10(-4) M) in aqueous solution, upon impedance spectroscopy measurements. A calibration curve obtained over this range of concentrations and a new analytical method based on impedance spectroscopy measurements in aqueous solution is proposed. The sensor nanofilm was produced by spin-coating and diagnosed via spectroscopic ellipsometry, AFM, and electrically conductivity techniques. Changes in the conductivity due to the boron-fluoride complex formation seem to be the major mechanism behind the dependence of impedimetric results on the fluoride concentration. (C) 2010 Elsevier B.V. All rights reserved.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;World Congress on Biosensors, Glasgow, SCOTLAND, MAY 26-28, 2010&lt;/p&gt;
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