{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T13:52:38Z","timestamp":1791121958837,"version":"4.1.0"},"reference-count":50,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T00:00:00Z","timestamp":1791072000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T00:00:00Z","timestamp":1791072000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001843","name":"Science and Engineering Research Board","doi-asserted-by":"publisher","award":["CRG\/2022\/006776"],"award-info":[{"award-number":["CRG\/2022\/006776"]}],"id":[{"id":"10.13039\/501100001843","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                    The dimethyldihydropyrene photochromic system is a 14\n                    <jats:italic>\u03c0<\/jats:italic>\n                    \u2010electronic framework that switches to a less\u2010aromatic, nonplanar system under visible light. In this work, we unravel a neutral phosphorus heteroatom\u2010appended dimethyldihydropyrene (\n                    <jats:bold>DHP<\/jats:bold>\n                    ) photoswitchable system that acts as a self\u2010sensitizer, enabling precise, wavelength\u2010selective control over singlet oxygen capture with dual reactivity. The attachment of the phosphorus directly to the\n                    <jats:bold>DHP<\/jats:bold>\n                    scaffold allowed red light (640\u00a0nm) to selectively generate a phosphinate intermediate (\n                    <jats:bold>DHP<\/jats:bold>\n                    \u2010\n                    <jats:bold>2<\/jats:bold>\n                    ), while green light (525\u00a0nm) triggers further transformation into an endoperoxide. The dual reactivity can thus be selected easily by choosing the appropriate wavelength of light. The formation of the photoproducts also displayed dependence on the phosphine (\n                    <jats:bold>DHP<\/jats:bold>\n                    \u2010\n                    <jats:bold>1)<\/jats:bold>\n                    concentration. Thus, this work establishes a unified approach to engineering singlet oxygen generation, wavelength\u2010selective fixation, and release of singlet oxygen within a single molecular scaffold.\n                  <\/jats:p>","DOI":"10.1002\/smll.76102","type":"journal-article","created":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T13:09:40Z","timestamp":1791119380000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Switching Reactivity With Light: C\u2500P Bonding Controls Singlet Oxygen Generation and Reactivity in Dimethyldihydropyrene\u2010Cyclophanediene (DHP\u2010CPD) Photoswitches"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-5770-9451","authenticated-orcid":false,"given":"Manik Lal","family":"Maity","sequence":"first","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata  Mohanpur West Bengal India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sayan","family":"Chandra","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata  Mohanpur West Bengal India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-9153-3244","authenticated-orcid":false,"given":"Samyadeb","family":"Mahato","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata  Mohanpur West Bengal India"},{"name":"Department of Chemistry Simon Fraser University  Burnaby British Columbia Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0961-4872","authenticated-orcid":false,"given":"Jakir","family":"Ahmed","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata  Mohanpur West Bengal India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7668-0274","authenticated-orcid":false,"given":"Subhajit","family":"Bandyopadhyay","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata  Mohanpur West Bengal India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,4]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1039\/D5CS00054H"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.3390\/pharmaceutics15020330"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijms242316890"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1155\/2022\/7211485"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.3390\/ph17101274"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3NR05801H"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202416963"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10311\u2010024\u201001798\u20100"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccr.2025.217253"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202504028"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1038\/nenergy.2017.56"},{"key":"e_1_2_10_13_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.4c15230"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fmre.2021.07.008"},{"key":"e_1_2_10_15_1","doi-asserted-by":"publisher","DOI":"10.3390\/antiox14070865"},{"key":"e_1_2_10_16_1","doi-asserted-by":"publisher","DOI":"10.3390\/biom13091291"},{"key":"e_1_2_10_17_1","doi-asserted-by":"publisher","DOI":"10.1111\/php.13666"},{"key":"e_1_2_10_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202210249"},{"key":"e_1_2_10_19_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.3c12245"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1007\/s42464\u2010024\u201000249\u20103"},{"key":"e_1_2_10_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.watres.2022.118209"},{"key":"e_1_2_10_22_1","doi-asserted-by":"publisher","DOI":"10.1002\/tcr.202000143"},{"key":"e_1_2_10_23_1","doi-asserted-by":"publisher","DOI":"10.1021\/cr60272a004"},{"key":"e_1_2_10_24_1","doi-asserted-by":"publisher","DOI":"10.1134\/S0036024406050232"},{"key":"e_1_2_10_25_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.555965"},{"key":"e_1_2_10_26_1","doi-asserted-by":"crossref","DOI":"10.1002\/9783527827626","volume-title":"Molecular Photoswitches","author":"Pianowski Z. 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