{"id":605,"date":"2025-09-05T09:00:00","date_gmt":"2025-09-05T16:00:00","guid":{"rendered":"https:\/\/dornsife.usc.edu\/met-research-group\/?p=605"},"modified":"2025-09-06T18:05:48","modified_gmt":"2025-09-07T01:05:48","slug":"congratulations-to-dr-darius-allen-shariaty-on-his-publication-in-the-journal-of-the-american-chemical-society","status":"publish","type":"post","link":"https:\/\/dornsife.usc.edu\/met-research-group\/2025\/09\/05\/congratulations-to-dr-darius-allen-shariaty-on-his-publication-in-the-journal-of-the-american-chemical-society\/","title":{"rendered":"Congratulations to Dr. Darius Allen Shariaty on his publication in the Journal of the American Chemical Society!"},"content":{"rendered":"\n\n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--rich-text \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--rich-text\"\n    \n      >\n\n    \n      \n<div class=\"f--field f--wysiwyg\">\n\n    \n  <h2><\/h2>\n<h2><\/h2>\n<h2>Congratulations to Dr. Darius Allen Shariaty on his publication in the Journal of the American Chemical Society!<\/h2>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-769\" src=\"https:\/\/dornsife.usc.edu\/met-research-group\/wp-content\/uploads\/sites\/483\/2025\/08\/das-2025-300x158.jpg\" alt=\"\" width=\"300\" height=\"158\" srcset=\"https:\/\/dornsife.usc.edu\/met-research-group\/wp-content\/uploads\/sites\/483\/2025\/08\/das-2025-300x158.jpg 300w, https:\/\/dornsife.usc.edu\/met-research-group\/wp-content\/uploads\/sites\/483\/2025\/08\/das-2025-768x404.jpg 768w, https:\/\/dornsife.usc.edu\/met-research-group\/wp-content\/uploads\/sites\/483\/2025\/08\/das-2025.jpg 992w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><strong>Abstract<\/strong><\/p>\n<p>The structural and photophysical properties of five chiral Zn complexes incorporating a carbazolate (Cz) donor that is electronically decoupled from a pyridyl acceptor by an\u00a0<i>ortho<\/i>-connection to a bridging phenylene group are presented. The bidentate ligand in the unsubstituted bis-ligated parent complex was methylated at key positions to constrain the torsional freedom of the donor\/acceptor moieties, resulting in three structurally modified bis-ligated derivatives, all exhibiting energy gaps between the singlet and triplet excited states (\u0394<i>E<\/i><sub>ST<\/sub>) between 22 and 27 meV. Methylation improves the photoluminescence quantum yield (up to 30% in solution), while the low \u0394<i>E<\/i><sub>ST<\/sub>\u00a0of these complexes allows for dual-emission properties in all of the bis-ligated derivatives. Structural modification of the Cz\/pyridyl ligand was also investigated by linking the unsubstituted bidentate ligand to generate a tetradentate, tetrapodal ligand. The solution-state structure of the tetradentate ligand is similar in its free and ligated forms, featuring a binding site reminiscent of enzymes and metal-sequestering ligands. The resulting tetradentate complex [Zn(<i>N<\/i><sub>2<\/sub><i>R<\/i><sub>2<\/sub>)] shows enhanced through-bond conjugation, increasing the \u0394<i>E<\/i><sub>ST<\/sub>\u00a0to 89 meV, thereby eliminating the dual-emission characteristics of the bis-ligated complexes. Furthermore, this complex shows a 50-fold improvement in hydrolytic stability in organic solution relative to the parent complex. These compounds and their analyses are intended to enrich the understanding of compounds exhibiting through-space charge transfer and guide the search for earth-abundant metal complexes for applications in photosensitization and luminescence.<\/p>\n<p>Read the full article here:<\/p>\n<p><a href=\"https:\/\/pubs.acs.org\/doi\/10.1021\/jacs.5c07162\">Shariaty, D. A.; Djurovich, P. I.; Thompson, M. E. <span class=\"hlFld-Title\">Structural and Electronic Tuning of Luminescent Zn<sup>II<\/sup>\u00a0Complexes Based on an\u00a0<i>o<\/i>-Terphenyl Ligand Motif.\u00a0<em>Journal of the American Chemical Society<\/em> <strong>2025<\/strong>, 147, 32, 29065-29078.<\/span><\/a><\/p>\n\n\n\n<\/div>\n\n\n  <\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":976,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-605","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Congratulations to Dr. Darius Allen Shariaty on his publication in the Journal of the American Chemical Society!<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dornsife.usc.edu\/met-research-group\/2025\/09\/05\/congratulations-to-dr-darius-allen-shariaty-on-his-publication-in-the-journal-of-the-american-chemical-society\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Congratulations to Dr. Darius Allen Shariaty on his publication in the Journal of the American Chemical Society! - Mark E. 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