{"id":99,"date":"2017-02-07T15:39:10","date_gmt":"2017-02-07T20:39:10","guid":{"rendered":"https:\/\/sites.bu.edu\/el\/?page_id=99"},"modified":"2020-05-04T08:45:07","modified_gmt":"2020-05-04T12:45:07","slug":"research","status":"publish","type":"page","link":"https:\/\/sites.bu.edu\/el\/research\/","title":{"rendered":"Research"},"content":{"rendered":"<p><iframe loading=\"lazy\" width=\"550\" height=\"400\" id=\"iframe_container\" frameborder=\"0\" webkitallowfullscreen=\"webkitallowfullscreen\" mozallowfullscreen=\"mozallowfullscreen\" allowfullscreen=\"allowfullscreen\" src=\"https:\/\/prezi.com\/embed\/ppk5xcseiu6e\/?bgcolor=ffffff&amp;lock_to_path=0&amp;autoplay=0&amp;autohide_ctrls=0&amp;landing_data=bHVZZmNaNDBIWnNjdEVENDRhZDFNZGNIUE43MHdLNWpsdFJLb2ZHanI0cTI1WENRa2k1QXdCc3lwemlMaUt5MEp3PT0&amp;landing_sign=IhP4hwuhuNlK7u9XFaQtrLLrZz56PMfTFIOn8YAB-Iw\"><\/iframe><\/p>\n<p><em><strong>Full details of each project\u00a0are linked to the titles below.<\/strong><\/em><\/p>\n<hr \/>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" src=\"\/el\/files\/2017\/03\/SPM-OrgSyn-17-2-636x284.png\" alt=\"SPM-OrgSyn-17-2\" width=\"293\" height=\"131\" class=\"alignleft wp-image-262\" srcset=\"https:\/\/sites.bu.edu\/el\/files\/2017\/03\/SPM-OrgSyn-17-2-636x284.png 636w, https:\/\/sites.bu.edu\/el\/files\/2017\/03\/SPM-OrgSyn-17-2.png 720w\" sizes=\"(max-width: 293px) 100vw, 293px\" \/><\/p>\n<p style=\"text-align: justify;\">Organic semiconductors are a unique class of materials that combine the processability of organic materials with the optical and electronic properties of semiconductors. These complex materials impact several areas of technological importance including energy (solar cells), displays, (light emitting diodes), electronics (field effect transistors), and <span>health (sensors). These carbon-based small molecules, oligomers or polymers that were initially envisioned as replacements for silicon and rare-earth metals based semiconductors widely used today. However, organic <\/span>materials can be used to produce devices with properties that cannot be attained with inorganic materials, such as color tuning and fabrication on irregular surfaces. Although there are many known organic semiconductors issues such as the scalability of chemical synthesis, elimination of defects within the materials and overall improvements in performance need to be addressed allow for advancements in the large-scale manufacture of \u201dplastic\u201d electronics. As organic chemist, we are able to employ an atomic level approach toward developing new organic semiconductors. The Jeffries-EL group has developed several novel building blocks for the synthesis of conjugated polymers. Her synthetic methods have spawned a new generation of materials that posses many promising properties for use in a range of organic semiconducting applications.<\/p>\n<p style=\"text-align: justify;\"><span><br \/>\n<img loading=\"lazy\" src=\"\/el\/files\/2017\/03\/CPs-17.png\" alt=\"CPs-17\" width=\"257\" height=\"320\" class=\" wp-image-128 alignright\" \/>Conjugated polymers are unique among all polymers because they posses a backbone with an extended p-conjugated systems.\u00a0 This extended pi-system contains delocalized electrons, and can be regarded as intrinsic semiconductors. These materials can then be doped to form a conductive material.\u00a0 The discovery of this resulted in the awarding of the <a href=\"http:\/\/www.nobelprize.org\/nobel_prizes\/chemistry\/laureates\/2000\/index.html\">Nobel prize in chemistry in 2000<\/a>. We can classify these materials in analogous fashion to their inorganic counterparts as p-type (electron donating\/ hole transporting) and n-type (electron accepting and transporting. Some examples of typical conjugated polymers are shown on the right. Typically, these polymers bear substitutents off of the polymer backbone to improve processing and solubility.\u00a0 The substituents can also be used to alter the electronic and physical properties of the polymer. Initially, the field focused on the synthesis of homopolymers, based on the same repeating unit, however in recent years systems based on alternating electron rich and electron poor heterocycles now dominate the literature. These so called donor-acceptor copolymers allow for facile tuning of the optical and electronic properties through selection of the strength of the components.<\/span><\/p>\n<hr \/>\n<h4 style=\"text-align: center;\"><span style=\"text-decoration: underline; color: #000000;\"><strong>Current Projects<\/strong><\/span><\/h4>\n<p style=\"text-align: left;\"><span style=\"color: #000000;\"><a href=\"https:\/\/sites.bu.edu\/el\/research\/current_projects\/\" style=\"color: #000000;\"><strong>1. Synthesis of cross-conjugated benzobisazoles<\/strong><\/a><\/span><\/p>\n<p><span style=\"color: #000000;\"><a href=\"https:\/\/sites.bu.edu\/el\/research\/current_projects\/#BDC\" style=\"color: #000000;\"><strong>2. Synthesis of novel materials based on benzochalcogenophenes<\/strong><\/a><\/span><\/p>\n<p><span style=\"color: #000000;\"><a href=\"https:\/\/sites.bu.edu\/el\/research\/current_projects\/\" style=\"color: #000000;\"><strong>3. Synthesis of novel D-A-D small molecules<\/strong><\/a><\/span><\/p>\n<p><span style=\"color: #000000;\"><a href=\"https:\/\/sites.bu.edu\/el\/research\/current_projects\" style=\"color: #000000;\"><strong>4. Synthesis of conjugated oligomers in flow<\/strong><\/a><\/span><\/p>\n<hr \/>\n<h4 style=\"text-align: center;\"><span style=\"color: #820505;\"><strong><span style=\"color: #000000;\"><\/span><\/strong><\/span><span style=\"text-decoration: underline;\"><span style=\"color: #000000; text-decoration: underline;\">Research Thrust<\/span><\/span><\/h4>\n<p><a href=\"https:\/\/sites.bu.edu\/el\/research\/oleds\/\"><span style=\"color: #000000;\"><strong>Organic light emitting diodes (OLED)s<\/strong><\/span><\/a><\/p>\n<p><span style=\"color: #000000;\"><a href=\"https:\/\/sites.bu.edu\/el\/research\/research-in-organic-solar-cells-oscs\/\" style=\"color: #000000;\"><strong>Organic Solar Cells (OSC)s<\/strong><\/a><\/span><\/p>\n<p><span style=\"color: #000000;\"><a href=\"https:\/\/sites.bu.edu\/el\/research\/research-in-organic-field-effect-transistors-ofets\" style=\"color: #000000;\"><strong>Organic Field Effect Transistors (OFET)s<\/strong><\/a><\/span><\/p>\n<hr \/>\n<h4 style=\"text-align: center;\"><span style=\"text-decoration: underline; color: #000000;\">Previous Projects<\/span><\/h4>\n<p><strong><span style=\"color: #000000;\">5. Synthesis of tunable polymers\u00a0based on benzobisazoles.<\/span><\/strong><\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Full details of each project\u00a0are linked to the titles below. Organic semiconductors are a unique class of materials that combine the processability of organic materials with the optical and electronic properties of semiconductors. These complex materials impact several areas of technological importance including energy (solar cells), displays, (light emitting diodes), electronics (field effect transistors), and [&hellip;]<\/p>\n","protected":false},"author":11463,"featured_media":0,"parent":0,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/sites.bu.edu\/el\/wp-json\/wp\/v2\/pages\/99"}],"collection":[{"href":"https:\/\/sites.bu.edu\/el\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.bu.edu\/el\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.bu.edu\/el\/wp-json\/wp\/v2\/users\/11463"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.bu.edu\/el\/wp-json\/wp\/v2\/comments?post=99"}],"version-history":[{"count":49,"href":"https:\/\/sites.bu.edu\/el\/wp-json\/wp\/v2\/pages\/99\/revisions"}],"predecessor-version":[{"id":803,"href":"https:\/\/sites.bu.edu\/el\/wp-json\/wp\/v2\/pages\/99\/revisions\/803"}],"wp:attachment":[{"href":"https:\/\/sites.bu.edu\/el\/wp-json\/wp\/v2\/media?parent=99"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}