{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T09:49:18Z","timestamp":1792144158258,"version":"4.4.0"},"reference-count":75,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T00:00:00Z","timestamp":1792108800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T00:00:00Z","timestamp":1792108800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100010002","name":"Ministry of Education","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100010002","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    To investigate the manipulations of light on distinct vibration\u2010induced emission (VIE) behaviors, the classic VIE\u2010fluorophore 9,14\u2010diphenyl\u20109,14\u2010dihydrodibenzo[\n                    <jats:italic>a,c<\/jats:italic>\n                    ]phenazine (DPAC) was integrated with an optical switchable stiff\u2010stilbene moiety into the first molecular design of various sized nanohoop structures (i.e.,\n                    <jats:bold>RnD<\/jats:bold>\n                    , where\n                    <jats:bold>n<\/jats:bold>\n                    = 4 and 6 with different cavities). The goal is to exploit tunable nano\u2010twisted structures of novel geometric macrocycle isomers, controlled by cis\/trans isomerizations of stiff\u2010stilbene units under 320\/385\u00a0nm light irradiations, to modulate corresponding bent and planar configurational structures of DPAC moieties and adjust their ratiometric (photoluminescence) PL emissions. Light\u2010controllable cis\/trans isomerizations of different sized nanohoop structures resulted in distinct emission changes due to adaptable structural constraints, facilitating alterations of PL emission colors with significant Stokes shifts. The emission spectra spanned from cyan\/white\/orange\u2010light emissions, triggered by cis\/trans isomerizations of stiff\u2010stilbene units upon respective light exposures of 320\/385\u00a0nm. Additionally, external factors such as solvent polarities, viscosities, temperatures, and water contents could further regulate ratiometric emission features of DPAC\u2010based geometric macrocycle isomers, demonstrating high sensitivities toward various environmental changes. This study highlighted the potentials for developing multi\u2010color emissive smart materials by utilizing nano\u2010twisting of DPAC\u2010based nanohoop structures tuned by optical switchable moieties, opening new avenues for innovative applications in stimuli\u2010responsive materials.\n                  <\/jats:p>","DOI":"10.1002\/smll.76100","type":"journal-article","created":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T09:28:45Z","timestamp":1792142925000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Distinct Nanohoop Structures and Ratiometric Emissions of Isomeric DPAC\u2010Based Macrocycles Tuned by Nano\u2010Twisting of Stiff\u2010Stilbene Optical\u2010Switches"],"prefix":"10.1002","author":[{"given":"Nguyen Thanh","family":"Trung","sequence":"first","affiliation":[{"name":"Department of Materials Science and Engineering National Yang Ming Chiao Tung University  Hsinchu 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