{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,20]],"date-time":"2025-10-20T14:10:59Z","timestamp":1760969459510,"version":"build-2065373602"},"reference-count":44,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2024,1,26]],"date-time":"2024-01-26T00:00:00Z","timestamp":1706227200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100007504","name":"Istanbul Teknik \u00dcniversitesi","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100007504","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["ChemistryOpen"],"published-print":{"date-parts":[[2024,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The synthesis of two novel phthalonitrile derivatives (<jats:bold>3<\/jats:bold>\u2013<jats:bold>4<\/jats:bold>) bearing ethynylcyclohex\u20101\u2010ene and ethynylcyclohexane groups and two peripherally octa substituted zinc (II) phthalocyanines (<jats:bold>5<\/jats:bold>\u2013<jats:bold>6<\/jats:bold>) were prepared. The synthesis of phthalonitrile derivatives was performed with Sonagashira coupling reaction by using palladium\u2010catalyzed. The newly synthesized compounds were characterized by using FT\u2010IR, NMR, mass, and UV\u2010Vis absorption spectroscopy techniques. Aggregation studies of <jats:bold>5<\/jats:bold> and <jats:bold>6<\/jats:bold> were performed in various organic solvents and different concentrations in tetrahydrofuran (THF). The photophysical studies of the Pcs were performed in THF to determine the effect of the alkyne groups on the fluorescence of the Pc ring. Substances showing fluorescence properties can be used in practical applications such as to create an image in microscopy. Fluorescence quantum yield (\u03a6<jats:sub>F<\/jats:sub>) and fluorescence lifetime (\u03c4<jats:sub>F<\/jats:sub>) of <jats:bold>5<\/jats:bold>\u2013<jats:bold>6<\/jats:bold> were calculated. The fluorescence quenching studies of <jats:bold>5<\/jats:bold>\u2013<jats:bold>6<\/jats:bold> were performed by adding the different concentrations of 1,4\u2010benzoquinone (BQ) to a constant concentration of the Pcs in THF and it was found that benzoquinone was an effective quencher. The values of the Stern\u2010Volmer constant (K<jats:sub>sv<\/jats:sub>) and quenching constant (k<jats:sub>q<\/jats:sub>) of zinc phthalocyanines (<jats:bold>5<\/jats:bold>\u2013<jats:bold>6<\/jats:bold>) were examined. All obtained results were compared with each other and with unsubstituted zinc Pc compound used as a reference.<\/jats:p>","DOI":"10.1002\/open.202300295","type":"journal-article","created":{"date-parts":[[2024,1,27]],"date-time":"2024-01-27T02:20:35Z","timestamp":1706322035000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Effect of Direct Alkyne Substitution on the Photophysical Properties of Two Novel Octasubstituted Zinc Phthalocyanines"],"prefix":"10.1002","volume":"13","author":[{"given":"Hande","family":"Pekbelgin Karao\u011flu","sequence":"first","affiliation":[{"name":"Department of Chemistry Faculty of Science and Letters Istanbul Technical University  Maslak 34469 Istanbul Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,1,26]]},"reference":[{"key":"e_1_2_9_1_1","first-page":"1996","volume-title":"Phthalocyanines: properties and applications","author":"Leznoff C. 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