{"id":{"repo_id":"greece","oai_identifier":"oai:10442/0544"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/0544","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΑΖΩΤΟΥΧΑ ΠΑΡΑΓΩΓΑ ΤΟΥ ΤΕΤΡΑΘΕΙΑΦΟΥΛΒΑΛΕΝΙΟΥ ΚΑΙ ΤΕΤΡΑΣΕΛΗΝΑΦΟΥΛΒΑΛΕΝΙΟΥ ΚΑΙ ΑΓΩΓΙΜΑ ΑΛΑΤΑ ΑΥΤΩΝ","abstract":"SYMMETRICAL TETRATHIAFULVALENES AND TETRASELENAFULVALENES (Π- DONORS) CONTAINING NITROGEN ATOMS WERE SYNTHESIZED AND CHARACTERIZED BY ELEMENTAL ANALYSIS AND VARIOUS SPECTROSCOPIC TECHNIQUES. NITROGEN ATOMS HAVE BEEN INTRODUCED IN Π-DONORS MOLECULE IN THE FORM OF PYRAZINE, QUINOXALINE PARIDINOPYRAZINE AND PYRIDINE RINGS. SEVERAL OF THE CONDUCTIVE RADICAL SALTS OF THE SYNTHESIZED Π-DONORS WERE PREPARED BY ELECTROCRYSTALLIZATION OF THE DONOR IN THE PRESENCE OF BU4NX (WHEREX:ANION). SEVERAL OF THESE SALTS WERE STUDIED BY X-RAY CRYSTALLOGRAPHY AND U.V. VIS SPECTROSCOPY, IN EITHER REFLECTANCE OR ABSORPTION MODE. ELECTRICAL MEASUREMENTS ON THE CONDUCTIVE SALTS WERE ALSO PERFORMED. THE RESULTS OF THESE STUDIES HAVE SHOWN THAT ALL OF THESE EXAMINED SALTS ARE SEMICONDUCTORS MAINLY ANISOTROPIC, BUT SOME OF THEM BECOME ALMOST ISOTROPIC AT LOW TEMPERATURES.","abstract_html":"SYMMETRICAL TETRATHIAFULVALENES AND TETRASELENAFULVALENES (Π- DONORS) CONTAINING NITROGEN ATOMS WERE SYNTHESIZED AND CHARACTERIZED BY ELEMENTAL ANALYSIS AND VARIOUS SPECTROSCOPIC TECHNIQUES. NITROGEN ATOMS HAVE BEEN INTRODUCED IN Π-DONORS MOLECULE IN THE FORM OF PYRAZINE, QUINOXALINE PARIDINOPYRAZINE AND PYRIDINE RINGS. SEVERAL OF THE CONDUCTIVE RADICAL SALTS OF THE SYNTHESIZED Π-DONORS WERE PREPARED BY ELECTROCRYSTALLIZATION OF THE DONOR IN THE PRESENCE OF BU4NX (WHEREX:ANION). SEVERAL OF THESE SALTS WERE STUDIED BY X-RAY CRYSTALLOGRAPHY AND U.V. VIS SPECTROSCOPY, IN EITHER REFLECTANCE OR ABSORPTION MODE. ELECTRICAL MEASUREMENTS ON THE CONDUCTIVE SALTS WERE ALSO PERFORMED. THE RESULTS OF THESE STUDIES HAVE SHOWN THAT ALL OF THESE EXAMINED SALTS ARE SEMICONDUCTORS MAINLY ANISOTROPIC, BUT SOME OF THEM BECOME ALMOST ISOTROPIC AT LOW TEMPERATURES.","abstract_has_math":false,"creators":["Γιαννόπουλος, Στέλιος"],"institution":"Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ)","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1987,"date_issued":"1987","date_published":"1987","updated_at":"2026-07-24T02:25:21Z","subjects":["ORGANIC CONDUCTORS","RADICAL ORGANIC CONDUCTIVE SALTS","RADICAL SALTS","SYNTHETIC CONDUCTORS","SYNTHETIC METALS","ΑΖΩΤΟΥΧΑ ΠΑΡΑΓΩΓΑ ΤΕΤΡΑΘΕΙΑ ΦΟΥΛΒΑΛΕΝΙΟΥ","ΑΖΩΤΟΥΧΑ ΠΑΡΑΓΩΓΑ ΤΕΤΡΑΣΕΛΗΝΑΦΟΥΛΒΑΛΕΝΙΟΥ","ΟΡΓΑΝΙΚΑ ΑΛΑΤΑ ΡΙΖΙΚΩΝ ΙΟΝΤΩΝ","ΟΡΓΑΝΙΚΟΙ ΑΓΩΓΟΙ","ΡΙΖΙΚΑ ΑΛΑΤΑ","ΣΥΝΘΕΤΙΚΑ ΜΕΤΑΛΛΑ","ΣΥΝΘΕΤΙΚΟΙ ΑΓΩΓΟΙ","Φυσικές Επιστήμες","Natural Sciences","Χημεία","Chemical Sciences"],"languages":["gre"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/0544"],"render_values":[{"text":"10.12681/eadd/0544","href":"https://doi.org/10.12681/eadd/0544","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/0544","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Γιαννόπουλος, Στέλιος"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1987"]},{"key":"dc:publisher","label":"Institution","values":["Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ)","National and Kapodistrian University of Athens"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["ORGANIC CONDUCTORS","RADICAL ORGANIC CONDUCTIVE SALTS","RADICAL SALTS","SYNTHETIC CONDUCTORS","SYNTHETIC METALS","ΑΖΩΤΟΥΧΑ ΠΑΡΑΓΩΓΑ ΤΕΤΡΑΘΕΙΑ ΦΟΥΛΒΑΛΕΝΙΟΥ","ΑΖΩΤΟΥΧΑ ΠΑΡΑΓΩΓΑ ΤΕΤΡΑΣΕΛΗΝΑΦΟΥΛΒΑΛΕΝΙΟΥ","ΟΡΓΑΝΙΚΑ ΑΛΑΤΑ ΡΙΖΙΚΩΝ ΙΟΝΤΩΝ","ΟΡΓΑΝΙΚΟΙ ΑΓΩΓΟΙ","ΡΙΖΙΚΑ ΑΛΑΤΑ","ΣΥΝΘΕΤΙΚΑ ΜΕΤΑΛΛΑ","ΣΥΝΘΕΤΙΚΟΙ ΑΓΩΓΟΙ","Φυσικές Επιστήμες","Natural Sciences","Χημεία","Chemical Sciences"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["gre"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/0544","http://hdl.handle.net/10442/hedi/0544"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["SYMMETRICAL TETRATHIAFULVALENES AND TETRASELENAFULVALENES (Π- DONORS) CONTAINING NITROGEN ATOMS WERE SYNTHESIZED AND CHARACTERIZED BY ELEMENTAL ANALYSIS AND VARIOUS SPECTROSCOPIC TECHNIQUES. NITROGEN ATOMS HAVE BEEN INTRODUCED IN Π-DONORS MOLECULE IN THE FORM OF PYRAZINE, QUINOXALINE PARIDINOPYRAZINE AND PYRIDINE RINGS. SEVERAL OF THE CONDUCTIVE RADICAL SALTS OF THE SYNTHESIZED Π-DONORS WERE PREPARED BY ELECTROCRYSTALLIZATION OF THE DONOR IN THE PRESENCE OF BU4NX (WHEREX:ANION). SEVERAL OF THESE SALTS WERE STUDIED BY X-RAY CRYSTALLOGRAPHY AND U.V. VIS SPECTROSCOPY, IN EITHER REFLECTANCE OR ABSORPTION MODE. ELECTRICAL MEASUREMENTS ON THE CONDUCTIVE SALTS WERE ALSO PERFORMED. THE RESULTS OF THESE STUDIES HAVE SHOWN THAT ALL OF THESE EXAMINED SALTS ARE SEMICONDUCTORS MAINLY ANISOTROPIC, BUT SOME OF THEM BECOME ALMOST ISOTROPIC AT LOW TEMPERATURES.","ΠΑΡΑΣΚΕΥΑΣΘΗΚΑΝ ΑΛΑΤΟΥΧΑ ΠΑΡΑΓΩΓΑ ΤΟΥ ΤΕΤΡΑΘΕΙΑΦΟΥΛΒΑΛΕΝΙΟΥ ΚΑΙ ΤΕΤΡΑΣΕΛΗΝΑΦΟΥΛΒΑΛΕΝΙΟΥ (Π-ΔΟΤΕΣ) ΤΑ ΟΠΟΙΑ ΚΑΙ ΧΑΡΑΚΤΗΡΙΣΘΗΚΑΝ ΜΕ ΣΤΟΙΧΕΙΑΚΗ ΑΝΑΛΥΣΗ ΚΑΙ ΦΑΣΜΑΤΟΣΚΟΠΙΚΕΣ ΤΕΧΝΙΚΕΣ. ΤΑ ΑΤΟΜΑ ΤΟΥ ΑΖΩΤΟΥ ΕΧΟΥΝ ΕΙΣΑΧΘΕΙ ΣΤΟ ΜΟΡΙΟ ΤΟΥ Π-ΔΟΤΗ ΜΕΤΗ ΜΟΡΦΗ ΠΥΡΑΓΙΝΙΚΟΥ ΚΙΝΟΞΑΛΙΝΙΚΟΥ ΠΥΡΙΔΙΝΟΠΥΡΑΓΙΝΙΚΟΥ ΚΑΙ ΠΥΡΙΔΙΝΙΚΟΥ ΔΑΚΤΥΛΙΟΥ. ΠΑΡΑΣΚΕΥΑΣΘΗΚΑΝ ΑΡΚΕΤΑ ΡΙΓΙΚΑ ΑΛΑΤΑ ΤΩΝ ΔΟΤΩΝ ΑΥΤΩΝ ΜΕ ΤΗΝ ΜΕΘΟΔΟ ΤΗΣ ΗΛΕΚΤΡΟΚΡΥΣΤΑΛΛΩΣΗΣ ΠΑΡΟΥΣΙΑ BU4NX (ΟΠΟΥ Χ:ΑΝΙΟΝ). ΤΑ ΠΙΟ ΑΝΤΙΠΡΟΣΩΠΕΥΤΙΚΑ ΑΠΟ ΤΑ ΑΛΑΤΑ ΑΥΤΑ ΜΕΛΕΤΗΘΗΚΑΝ ΜΕ ΚΡΥΣΤΑΛΛΟΓΡΑΦΙΑ ΑΚΤΙΝΩΝ Χ ΜΕ ΜΕΤΡΗΣΗ ΤΗΣ ΑΓΩΓΙΜΟΤΗΤΑΣ ΤΟΥΣ ΚΑΘΩΣ ΚΑΙ ΜΕ ΦΑΣΜΑΤΟΣΚΟΠΙΑ U.V VIS ΠΟΥ ΕΓΙΝΕ ΜΕ ΛΗΨΗ ΤΩΝ ΦΑΣΜΑΤΩΝ ΑΝΑΚΛΑΣΤΙΚΟΤΗΤΑΣ ΚΑΙ ΑΠΟΡΡΟΦΗΣΗΣ. ΤΑ ΑΠΟΤΕΛΕΣΜΑΤΑ ΤΩΝ ΜΕΛΕΤΩΝ ΑΥΤΩΝ ΕΔΕΙΞΑΝ ΟΤΙ ΟΛΑ ΤΑ ΑΛΑΤΑ ΠΟΥ ΜΕΛΕΤΗΘΗΚΑΝ ΕΙΝΑΙ ΗΜΙΑΓΩΓΟΙ ΚΥΡΙΩΣ ΑΝΙΣΟΤΡΟΠΟΙ, ΠΟΛΛΟΙ ΑΠΟ ΤΟΥΣ ΟΠΟΙΟΥΣ ΣΕ ΧΑΜΗΛΕΣ ΘΕΡΜΟΚΡΑΣΙΕΣ ΓΙΝΟΝΤΑΙ ΣΧΕΔΟΝ ΙΣΟΤΡΟΠΟΙ."]},{"key":"dc:title","label":"Title","values":["ΑΖΩΤΟΥΧΑ ΠΑΡΑΓΩΓΑ ΤΟΥ ΤΕΤΡΑΘΕΙΑΦΟΥΛΒΑΛΕΝΙΟΥ ΚΑΙ ΤΕΤΡΑΣΕΛΗΝΑΦΟΥΛΒΑΛΕΝΙΟΥ ΚΑΙ ΑΓΩΓΙΜΑ ΑΛΑΤΑ ΑΥΤΩΝ","NITROGEN CONTAINING DERIVATIVES OF TETRATHIAFULVALENES AND TETRASELENAFULVALENES AND CONDUCTIVE SALTS OF THEM"]}]}],"canonical_facts":{"dc:creator":["Γιαννόπουλος, Στέλιος"],"dc:date":["1987"],"dc:description":["SYMMETRICAL TETRATHIAFULVALENES AND TETRASELENAFULVALENES (Π- DONORS) CONTAINING NITROGEN ATOMS WERE SYNTHESIZED AND CHARACTERIZED BY ELEMENTAL ANALYSIS AND VARIOUS SPECTROSCOPIC TECHNIQUES. NITROGEN ATOMS HAVE BEEN INTRODUCED IN Π-DONORS MOLECULE IN THE FORM OF PYRAZINE, QUINOXALINE PARIDINOPYRAZINE AND PYRIDINE RINGS. SEVERAL OF THE CONDUCTIVE RADICAL SALTS OF THE SYNTHESIZED Π-DONORS WERE PREPARED BY ELECTROCRYSTALLIZATION OF THE DONOR IN THE PRESENCE OF BU4NX (WHEREX:ANION). SEVERAL OF THESE SALTS WERE STUDIED BY X-RAY CRYSTALLOGRAPHY AND U.V. VIS SPECTROSCOPY, IN EITHER REFLECTANCE OR ABSORPTION MODE. ELECTRICAL MEASUREMENTS ON THE CONDUCTIVE SALTS WERE ALSO PERFORMED. THE RESULTS OF THESE STUDIES HAVE SHOWN THAT ALL OF THESE EXAMINED SALTS ARE SEMICONDUCTORS MAINLY ANISOTROPIC, BUT SOME OF THEM BECOME ALMOST ISOTROPIC AT LOW TEMPERATURES.","ΠΑΡΑΣΚΕΥΑΣΘΗΚΑΝ ΑΛΑΤΟΥΧΑ ΠΑΡΑΓΩΓΑ ΤΟΥ ΤΕΤΡΑΘΕΙΑΦΟΥΛΒΑΛΕΝΙΟΥ ΚΑΙ ΤΕΤΡΑΣΕΛΗΝΑΦΟΥΛΒΑΛΕΝΙΟΥ (Π-ΔΟΤΕΣ) ΤΑ ΟΠΟΙΑ ΚΑΙ ΧΑΡΑΚΤΗΡΙΣΘΗΚΑΝ ΜΕ ΣΤΟΙΧΕΙΑΚΗ ΑΝΑΛΥΣΗ ΚΑΙ ΦΑΣΜΑΤΟΣΚΟΠΙΚΕΣ ΤΕΧΝΙΚΕΣ. ΤΑ ΑΤΟΜΑ ΤΟΥ ΑΖΩΤΟΥ ΕΧΟΥΝ ΕΙΣΑΧΘΕΙ ΣΤΟ ΜΟΡΙΟ ΤΟΥ Π-ΔΟΤΗ ΜΕΤΗ ΜΟΡΦΗ ΠΥΡΑΓΙΝΙΚΟΥ ΚΙΝΟΞΑΛΙΝΙΚΟΥ ΠΥΡΙΔΙΝΟΠΥΡΑΓΙΝΙΚΟΥ ΚΑΙ ΠΥΡΙΔΙΝΙΚΟΥ ΔΑΚΤΥΛΙΟΥ. ΠΑΡΑΣΚΕΥΑΣΘΗΚΑΝ ΑΡΚΕΤΑ ΡΙΓΙΚΑ ΑΛΑΤΑ ΤΩΝ ΔΟΤΩΝ ΑΥΤΩΝ ΜΕ ΤΗΝ ΜΕΘΟΔΟ ΤΗΣ ΗΛΕΚΤΡΟΚΡΥΣΤΑΛΛΩΣΗΣ ΠΑΡΟΥΣΙΑ BU4NX (ΟΠΟΥ Χ:ΑΝΙΟΝ). ΤΑ ΠΙΟ ΑΝΤΙΠΡΟΣΩΠΕΥΤΙΚΑ ΑΠΟ ΤΑ ΑΛΑΤΑ ΑΥΤΑ ΜΕΛΕΤΗΘΗΚΑΝ ΜΕ ΚΡΥΣΤΑΛΛΟΓΡΑΦΙΑ ΑΚΤΙΝΩΝ Χ ΜΕ ΜΕΤΡΗΣΗ ΤΗΣ ΑΓΩΓΙΜΟΤΗΤΑΣ ΤΟΥΣ ΚΑΘΩΣ ΚΑΙ ΜΕ ΦΑΣΜΑΤΟΣΚΟΠΙΑ U.V VIS ΠΟΥ ΕΓΙΝΕ ΜΕ ΛΗΨΗ ΤΩΝ ΦΑΣΜΑΤΩΝ ΑΝΑΚΛΑΣΤΙΚΟΤΗΤΑΣ ΚΑΙ ΑΠΟΡΡΟΦΗΣΗΣ. ΤΑ ΑΠΟΤΕΛΕΣΜΑΤΑ ΤΩΝ ΜΕΛΕΤΩΝ ΑΥΤΩΝ ΕΔΕΙΞΑΝ ΟΤΙ ΟΛΑ ΤΑ ΑΛΑΤΑ ΠΟΥ ΜΕΛΕΤΗΘΗΚΑΝ ΕΙΝΑΙ ΗΜΙΑΓΩΓΟΙ ΚΥΡΙΩΣ ΑΝΙΣΟΤΡΟΠΟΙ, ΠΟΛΛΟΙ ΑΠΟ ΤΟΥΣ ΟΠΟΙΟΥΣ ΣΕ ΧΑΜΗΛΕΣ ΘΕΡΜΟΚΡΑΣΙΕΣ ΓΙΝΟΝΤΑΙ ΣΧΕΔΟΝ ΙΣΟΤΡΟΠΟΙ."],"dc:identifier":["10.12681/eadd/0544","http://hdl.handle.net/10442/hedi/0544"],"dc:language":["gre"],"dc:publisher":["Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ)","National and Kapodistrian University of Athens"],"dc:subject":["ORGANIC CONDUCTORS","RADICAL ORGANIC CONDUCTIVE SALTS","RADICAL SALTS","SYNTHETIC CONDUCTORS","SYNTHETIC METALS","ΑΖΩΤΟΥΧΑ ΠΑΡΑΓΩΓΑ ΤΕΤΡΑΘΕΙΑ ΦΟΥΛΒΑΛΕΝΙΟΥ","ΑΖΩΤΟΥΧΑ ΠΑΡΑΓΩΓΑ ΤΕΤΡΑΣΕΛΗΝΑΦΟΥΛΒΑΛΕΝΙΟΥ","ΟΡΓΑΝΙΚΑ ΑΛΑΤΑ ΡΙΖΙΚΩΝ ΙΟΝΤΩΝ","ΟΡΓΑΝΙΚΟΙ ΑΓΩΓΟΙ","ΡΙΖΙΚΑ ΑΛΑΤΑ","ΣΥΝΘΕΤΙΚΑ ΜΕΤΑΛΛΑ","ΣΥΝΘΕΤΙΚΟΙ ΑΓΩΓΟΙ","Φυσικές Επιστήμες","Natural Sciences","Χημεία","Chemical Sciences"],"dc:title":["ΑΖΩΤΟΥΧΑ ΠΑΡΑΓΩΓΑ ΤΟΥ ΤΕΤΡΑΘΕΙΑΦΟΥΛΒΑΛΕΝΙΟΥ ΚΑΙ ΤΕΤΡΑΣΕΛΗΝΑΦΟΥΛΒΑΛΕΝΙΟΥ ΚΑΙ ΑΓΩΓΙΜΑ ΑΛΑΤΑ ΑΥΤΩΝ","NITROGEN CONTAINING DERIVATIVES OF TETRATHIAFULVALENES AND TETRASELENAFULVALENES AND CONDUCTIVE SALTS OF THEM"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:25:21Z"}