{"id":46584,"date":"2021-07-01T13:54:09","date_gmt":"2021-07-01T11:54:09","guid":{"rendered":"https:\/\/www.iemn.fr\/articles-temporaires-anglais\/thermal-conductivity-of-benzothieno-benzothiophene-derivatives-at-the-nanoscale-2.html"},"modified":"2021-07-08T09:55:41","modified_gmt":"2021-07-08T07:55:41","slug":"thermal-conductivity-of-benzothieno-benzothiophene-derivatives-at-the-nanoscale-2","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/newsletter\/thermal-conductivity-of-benzothieno-benzothiophene-derivatives-at-the-nanoscale-2.html","title":{"rendered":"Thermal conductivity of benzothieno-benzothiophene derivatives at the nanoscale"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_37_5nmtz16aok88\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore 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height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2.jpg\" class=\"ls-l ls-img-layer\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/09\/groupe_ncm_iemn_lille-2-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" style=\"font-size:36px;color:#000;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:400;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;top:0px;left:-682px;width:2504px;height:260px;\"><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:300px;height:30px;left:0px;top:231px;color:#ffffff;line-height:32px;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\"><i class=\"fa fa-user-circle\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>GROUPE DE RECHERCHE : NCM<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-46584'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-b504e382c149834c54cdde6268c3c793\">\n#top .av-special-heading.av-av_heading-b504e382c149834c54cdde6268c3c793{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-av_heading-b504e382c149834c54cdde6268c3c793 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-b504e382c149834c54cdde6268c3c793 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-b504e382c149834c54cdde6268c3c793 av-special-heading-h3 blockquote modern-quote modern-centered  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h3 class='av-special-heading-tag'  itemprop=\"headline\"  >Thermal conductivity of benzothieno-benzothiophene derivatives at the nanoscale<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<div  class='hr av-lbxvw0-bfed530996f38a00ba093856ce665002 hr-default  avia-builder-el-2  el_after_av_heading  el_before_av_one_full'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ngonrk-8d581c6dd83ce5ca1d982e0ae199552e\">\n.flex_column.av-ngonrk-8d581c6dd83ce5ca1d982e0ae199552e{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-ngonrk-8d581c6dd83ce5ca1d982e0ae199552e av_one_full  avia-builder-el-3  el_after_av_hr  el_before_av_one_half  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-kqkunjsa-cc299c7e9d5c4adc3d1dd56873cacb60'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><blockquote>\n<p><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/07\/thermal_conductivity3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-46449 alignleft\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/07\/thermal_conductivity3-300x252.jpg\" alt=\"\" width=\"300\" height=\"252\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/07\/thermal_conductivity3-300x252.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/07\/thermal_conductivity3-14x12.jpg 14w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/07\/thermal_conductivity3.jpg 471w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<div>Quantitative measurement and observation of thermal phenomena on nano-objects at the nanoscale is possible thanks to the Scanning Thermal Microscope. With this local probe microscope, we differentiate the thermal conductivity of nanometer thick films made of two types of molecules of the same family. This experimental and theoretical study allows to correlate the thermal conductivity with the atomic structure of the molecules and their organization in a thin film.<\/div>\n<\/blockquote>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3yuvv4-87333a2966b8e530e5ec25d0a356aa89\">\n.flex_column.av-3yuvv4-87333a2966b8e530e5ec25d0a356aa89{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-3yuvv4-87333a2966b8e530e5ec25d0a356aa89 av_one_half  avia-builder-el-5  el_after_av_one_full  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-kqkuq78e-934660e1c87344ba092ce3e6c84602c0'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-89879437769697fc1147f94808cb05bc\">\n.av_font_icon.av-13ewzjw-89879437769697fc1147f94808cb05bc{\ncolor:#800000;\nborder-color:#800000;\n}\n.av_font_icon.av-13ewzjw-89879437769697fc1147f94808cb05bc .av-icon-char{\nfont-size:18px;\nline-height:18px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-89879437769697fc1147f94808cb05bc avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue871' data-av_iconfont='entypo-fontello' ><\/span><\/span>The measurement of thermal properties at the nanometer scale is of increasing interest to characterize nano-objects (individual molecule, monolayer, 2D material or 1D material), but also to monitor the operation of electronic nano-components (transistor). We used the Scanning Thermal Microscope (SThM), a microscope from the large family of local probe microscopes, to characterize thermally and at the nanometer scale organic films with a thickness between 40 and 400 nm. Two types of films have been characterized, each made of a different molecule; one composed of four rings and named BTBT, the other molecule has in addition to BTBT two alkyl chains of 8 carbon atoms added on both sides of the molecule (named C8-BTBT-C8).<\/p>\n<p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-89879437769697fc1147f94808cb05bc\">\n.av_font_icon.av-13ewzjw-89879437769697fc1147f94808cb05bc{\ncolor:#800000;\nborder-color:#800000;\n}\n.av_font_icon.av-13ewzjw-89879437769697fc1147f94808cb05bc .av-icon-char{\nfont-size:18px;\nline-height:18px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-89879437769697fc1147f94808cb05bc avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue871' data-av_iconfont='entypo-fontello' ><\/span><\/span>These non-commercially available molecules have been synthesized by a chemist partner at the Universit\u00e9 Libre de Bruxelles (Belgium). Already known for their performances in organic transistors with electron mobilities reaching sometimes 200 cm\u00b2 V<span class=\"Aucun\"><span lang=\"EN-US\"><sup>-1<\/sup><\/span><\/span> s<span class=\"Aucun\"><span lang=\"EN-US\"><sup>-1<\/sup><\/span><\/span>, we explore here the thermal properties of these promising molecules. Indeed, few studies have focused on their thermal properties, while these molecules are good candidates for thermoelectricity applications (low thermal conductivity).<\/p>\n<\/div><\/section><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-w6g3kg-fd0ad867b772e887d2d59f7fa7cd32f8\">\n.flex_column.av-w6g3kg-fd0ad867b772e887d2d59f7fa7cd32f8{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-w6g3kg-fd0ad867b772e887d2d59f7fa7cd32f8 av_one_half  avia-builder-el-9  el_after_av_one_half  avia-builder-el-last  flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-kqkurjqo-27feb8ee9c40258576012148d04ac328'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-89879437769697fc1147f94808cb05bc\">\n.av_font_icon.av-13ewzjw-89879437769697fc1147f94808cb05bc{\ncolor:#800000;\nborder-color:#800000;\n}\n.av_font_icon.av-13ewzjw-89879437769697fc1147f94808cb05bc .av-icon-char{\nfont-size:18px;\nline-height:18px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-89879437769697fc1147f94808cb05bc avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue871' data-av_iconfont='entypo-fontello' ><\/span><\/span>The SThM study of these materials allows to access both the topography of the surface at the nanometer scale and also to measure the thermal conductivity of the film at a precise location on the surface. This conductivity value is obtained directly after a calibration phase on samples of known thermal conductivity. The BTBT and C8-BTBT films have thermal conductivities of 0.6 <span class=\"Aucun\"><span lang=\"EN-US\"><sup>-1<\/sup><\/span><\/span>.3 W m<span class=\"Aucun\"><span lang=\"EN-US\"><sup>-1<\/sup><\/span><\/span> K<span class=\"Aucun\"><span lang=\"EN-US\"><sup>-1<\/sup><\/span><\/span> and 0.3 \u2013 0.7 W m<span class=\"Aucun\"><span lang=\"EN-US\"><sup>-1<\/sup><\/span><\/span> K<span class=\"Aucun\"><span lang=\"EN-US\"><sup>-1<\/sup><\/span><\/span> respectively, showing the impact of the alkyl chain on the vibration modes of the molecules and thus on the thermal conductivity. These differences in thermal conductivities were related to the organization of the molecules in the film using theoretical calculations performed at the University of Mons (Belgium), the Catalan Institute of Nanosciences and Nanotechnologies (Barcelona, Spain) and the University of Cagliari (Italy). This work opens opportunities for the use of SThM in nanotechnology, but also for the study of these organic materials for thermoelectricity.<\/p>\n<h5><strong><em>Read more :<\/em><\/strong><\/h5>\n<p><a href=\"https:\/\/dx.doi.org\/10.1039\/D0NR08619C\" target=\"_blank\" rel=\"noopener\">https:\/\/dx.doi.org\/10.1039\/D0NR08619C<\/a><br \/>\n<a href=\"https:\/\/hal.archives-ouvertes.fr\/hal-03135025v1\" target=\"_blank\" rel=\"noopener\">https:\/\/hal.archives-ouvertes.fr\/hal-03135025v1<\/a><\/p>\n<p><div  class='avia-button-wrap av-rpqvoq-ce71a200ccc6eb557c878e1cb6ad0269-wrap avia-button-left  avia-builder-el-12  el_after_av_font_icon  el_before_av_button'><a href='mailto:dominique.vuillaume@iemn.fr'  class='avia-button av-rpqvoq-ce71a200ccc6eb557c878e1cb6ad0269 av-link-btn avia-icon_select-yes-left-icon avia-size-small avia-position-left avia-color-silver'   aria-label=\"Dominique Vuillaume\"><span class='avia_button_icon avia_button_icon_left' aria-hidden='true' data-av_icon='\ue805' data-av_iconfont='entypo-fontello'><\/span><span class='avia_iconbox_title' >Dominique Vuillaume<\/span><\/a><\/div><br \/>\n<div  class='avia-button-wrap av-rpqvoq-8b9e6c233cdc81592c0d7696e56d9a4c-wrap avia-button-left  avia-builder-el-13  el_after_av_button  avia-builder-el-last'><a href='mailto:stephane.lenfant@iemn.fr'  class='avia-button av-rpqvoq-8b9e6c233cdc81592c0d7696e56d9a4c av-link-btn avia-icon_select-yes-left-icon avia-size-small avia-position-left avia-color-silver'   aria-label=\"Stephane Lenfant\"><span class='avia_button_icon avia_button_icon_left' aria-hidden='true' data-av_icon='\ue805' data-av_iconfont='entypo-fontello'><\/span><span class='avia_iconbox_title' >Stephane Lenfant<\/span><\/a><\/div><\/p>\n<\/div><\/section><\/div><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[297],"tags":[],"class_list":["post-46584","post","type-post","status-publish","format-standard","hentry","category-newsletter"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/46584","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=46584"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/46584\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=46584"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=46584"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=46584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}