{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,11]],"date-time":"2026-10-11T13:28:43Z","timestamp":1791725323234,"version":"4.3.4"},"reference-count":65,"publisher":"American Chemical Society (ACS)","issue":"8","license":[{"start":{"date-parts":[[2018,8,28]],"date-time":"2018-08-28T00:00:00Z","timestamp":1535414400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/pubs.acs.org\/page\/policy\/authorchoice_termsofuse.html"}],"funder":[{"DOI":"10.13039\/501100003448","name":"General Secretariat for Research and Technology","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003448","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004895","name":"European Social Fund","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004895","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,8,31]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Here, we use a simple and effective method to accomplish energy level alignment and thus electron injection barrier control in organic light emitting diodes (OLEDs) with a conventional architecture based on a green emissive copolymer. In particular, a series of functionalized zinc porphyrin compounds bearing \u03c0-delocalized triazine electron withdrawing spacers for efficient intramolecular electron transfer and different terminal groups such as glycine moieties in their peripheral substitutes are employed as thin interlayers at the emissive layer\/Al (cathode) interface to realize efficient electron injection\/transport. The effects of spatial (i.e., assembly) configuration, molecular dipole moment and type of peripheral group termination on the optical properties and energy level tuning are investigated by steady-state and time-resolved photoluminescence spectroscopy in F8BT\/porphyrin films, by photovoltage measurements in OLED devices and by surface work function measurements in Al electrodes modified with the functionalized zinc porphyrins. The performance of OLEDs is significantly improved upon using the functionalized porphyrin interlayers with the recorded luminance of the devices to reach values 1 order of magnitude higher than that of the reference diode without any electron injection\/transport interlayer.<\/jats:p>","DOI":"10.1021\/acsomega.8b01503","type":"journal-article","created":{"date-parts":[[2018,8,29]],"date-time":"2018-08-29T17:12:16Z","timestamp":1535562736000},"page":"10008-10018","source":"Crossref","is-referenced-by-count":16,"title":["Functionalized Zinc Porphyrins with Various Peripheral Groups for\nInterfacial Electron Injection Barrier Control in Organic Light Emitting\nDiodes"],"prefix":"10.1021","volume":"3","author":[{"given":"Apostolis","family":"Verykios","sequence":"first","affiliation":[{"name":"National Center for Scientific Research Demokritos , , , ,","place":["Agia Paraskevi, Athens, Greece, 15310"]},{"name":"University of Patras , , ,","place":["Patras, Greece, 26504"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Papadakis","sequence":"additional","affiliation":[{"name":"University of Crete , , Voutes Campus , ,","place":["Heraklion, Crete, Greece, 70013"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anastasia","family":"Soultati","sequence":"additional","affiliation":[{"name":"National Center for Scientific Research Demokritos , , , ,","place":["Agia Paraskevi, Athens, Greece, 15310"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria-Christina","family":"Skoulikidou","sequence":"additional","affiliation":[{"name":"National Center for Scientific Research Demokritos , , , ,","place":["Agia Paraskevi, Athens, Greece, 15310"]},{"name":"National and Kapodistrian University of Athens , , Panepistimioupolis, , ,","place":["Zografos, Athens, Greece, 15784"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"George","family":"Papaioannou","sequence":"additional","affiliation":[{"name":"National and Kapodistrian University of Athens , , Panepistimioupolis, , ,","place":["Zografos, Athens, Greece, 15784"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Spyros","family":"Gardelis","sequence":"additional","affiliation":[{"name":"National and Kapodistrian University of Athens , , Panepistimioupolis, , ,","place":["Zografos, Athens, Greece, 15784"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ioannis D.","family":"Petsalakis","sequence":"additional","affiliation":[{"name":"National Hellenic Research Foundation , , Vas. 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Constantinou Avenue 48 , ,","place":["Athens, Greece, 11635"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vasilis","family":"Petropoulos","sequence":"additional","affiliation":[{"name":"University of Patras , , ,","place":["Patras, Greece, 26504"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leonidas C.","family":"Palilis","sequence":"additional","affiliation":[{"name":"University of Patras , , ,","place":["Patras, Greece, 26504"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0801-7029","authenticated-orcid":true,"given":"Mihalis","family":"Fakis","sequence":"additional","affiliation":[{"name":"University of Patras , , ,","place":["Patras, Greece, 26504"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nikolaos A.","family":"Vainos","sequence":"additional","affiliation":[{"name":"University of Patras , , ,","place":["Patras, Greece, 26504"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dimitris","family":"Alexandropoulos","sequence":"additional","affiliation":[{"name":"University of Patras , , ,","place":["Patras, Greece, 26504"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dimitris","family":"Davazoglou","sequence":"additional","affiliation":[{"name":"National Center for Scientific Research Demokritos , , , ,","place":["Agia Paraskevi, Athens, Greece, 15310"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0704-4802","authenticated-orcid":true,"given":"George","family":"Pistolis","sequence":"additional","affiliation":[{"name":"National Center for Scientific Research Demokritos , , , ,","place":["Agia Paraskevi, Athens, Greece, 15310"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Panagiotis","family":"Argitis","sequence":"additional","affiliation":[{"name":"National Center for Scientific Research Demokritos , , , ,","place":["Agia Paraskevi, Athens, Greece, 15310"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5682-2968","authenticated-orcid":true,"given":"Athanassios G.","family":"Coutsolelos","sequence":"additional","affiliation":[{"name":"University of Crete , , Voutes Campus , ,","place":["Heraklion, Crete, Greece, 70013"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8893-1691","authenticated-orcid":true,"given":"Maria","family":"Vasilopoulou","sequence":"additional","affiliation":[{"name":"National Center for Scientific Research Demokritos , , , ,","place":["Agia Paraskevi, Athens, Greece, 15310"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2018,8,28]]},"reference":[{"key":"2026090414081617900_cit1","doi-asserted-by":"publisher","first-page":"913","DOI":"10.1063\/1.98799","article-title":"Organic Electroluminescent\nDiodes","volume":"51","author":"Tang","year":"1987","journal-title":"Appl. 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