{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T15:08:15Z","timestamp":1790262495782,"version":"4.1.0"},"reference-count":48,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T00:00:00Z","timestamp":1790208000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T00:00:00Z","timestamp":1790208000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100014188","name":"Ministry of Science and ICT, South Korea","doi-asserted-by":"publisher","award":["RS\u20102024\u201000442105"],"award-info":[{"award-number":["RS\u20102024\u201000442105"]}],"id":[{"id":"10.13039\/501100014188","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100014188","name":"Ministry of Science and ICT, South Korea","doi-asserted-by":"publisher","award":["RS\u20102024\u201000415632"],"award-info":[{"award-number":["RS\u20102024\u201000415632"]}],"id":[{"id":"10.13039\/501100014188","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 development of homochiral coordination polymers (HCPs) that combine structural robustness with stimuli\u2010responsive functionality remains a significant challenge. Herein, we report two Zn\u2010based HCPs, Zn(R) and Zn(S), constructed from alanine\u2010derived chiral ligands and the photosensitive coligand 1,2\u2010di(4\u2010pyridyl)ethylene (dpe). Both compounds crystallize in the polar noncentrosymmetric (NCS) space group\n                    <jats:italic>P<\/jats:italic>\n                    2\n                    <jats:sub>1<\/jats:sub>\n                    and exhibit second\u2010harmonic generation (SHG) activity arising from their chirality\u2010induced NCS structures. Temperature\u2010dependent in situ powder x\u2010ray diffraction analyses reveal reversible dehydration\u2013rehydration phase transitions, demonstrating the remarkable adaptability of the framework. Notably, the frameworks enforce a slip\u2010stacked arrangement of dpe ligands that aligns neighboring olefinic bonds in accordance with Schmidt's criterion, thereby enabling UV\u2010induced single\u2010crystal\u2010to\u2010single\u2010crystal [2+2] cycloaddition. Site\u2010selective photodimerization to\n                    <jats:italic>rctt<\/jats:italic>\n                    \u2010tetra(4\u2010pyridyl)cyclobutane (\n                    <jats:italic>rctt<\/jats:italic>\n                    \u2010tpcb) is achieved within 8\u00a0h of UV irradiation. Kinetic analyses yield Avrami exponents close to 2, indicating a predominantly two\u2010dimensional solid\u2010state transformation mechanism. Importantly, the mirror\u2010image circular dichroism signals are retained throughout the photoreaction, confirming preservation of homochirality, while the SHG response persists after photoconversion. Quantitative analyses reveal a maximum\n                    <jats:italic>rctt<\/jats:italic>\n                    \u2010tpcb conversion of 97%, accompanied by approximately 10% thermal cycloreversion in polycrystalline samples. These results establish a multifunctional HCP platform that combines reversible phase transformation, solid\u2010state photoreactivity, and NCS optical functionality within a single framework.\n                  <\/jats:p>","DOI":"10.1002\/smll.75897","type":"journal-article","created":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T14:35:47Z","timestamp":1790260547000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Stimuli\u2010Responsive Homochiral Coordination Polymers Undergoing Single\u2010Crystal\u2010to\u2010Single\u2010Crystal [2+2] Photodimerization"],"prefix":"10.1002","author":[{"given":"Jihyun","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Chemistry Sogang University  Seoul Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7195-9089","authenticated-orcid":false,"given":"Kang Min","family":"Ok","sequence":"additional","affiliation":[{"name":"Department of Chemistry Sogang University  Seoul Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,24]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1039\/D4RA07458K"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202404554"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2NJ04116B"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.6c00401"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202508694"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1039\/D4TC03506B"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2TC04016F"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.5c06011"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1039\/D5SC01958C"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cclet.2023.108831"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202106812"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.6c00194"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202309323"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202516178"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/bkcs.70058"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/ejic.202000964"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202510219"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.molstruc.2024.138316"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.4c02218"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.5c05710"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1351\/pac197127040647"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202302429"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.6c02899"},{"key":"e_1_2_9_25_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.5c01464"},{"key":"e_1_2_9_26_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.4c07453"},{"key":"e_1_2_9_27_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.7436035"},{"key":"e_1_2_9_28_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.5c01946"},{"key":"e_1_2_9_29_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.3c02349"},{"key":"e_1_2_9_30_1","doi-asserted-by":"publisher","DOI":"10.1021\/accountsmr.4c00325"},{"key":"e_1_2_9_31_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.cgd.8b01087"},{"key":"e_1_2_9_32_1","doi-asserted-by":"publisher","DOI":"10.1039\/C6CC03256G"},{"key":"e_1_2_9_33_1","doi-asserted-by":"publisher","DOI":"10.1002\/advs.202502784"},{"key":"e_1_2_9_34_1","volume-title":"CCP14 Powder Diffraction Library","author":"Cheary R.","year":"1996"},{"key":"e_1_2_9_35_1","first-page":"1","volume-title":"The CRYSFIRE 2002 System for Automatic Powder Indexing: User's Manual","author":"Shirley R.","year":"2002"},{"key":"e_1_2_9_36_1","unstructured":"J.LaugierandB. C.Bochu Checkcell: A Software Performing Automatic Cell\/Space Group Determination Laboratoire des Mat\u00e9riaux et du G\u00e9nie Physique \u00c9cole Sup\u00e9rieure de Physique de Grenoble (INPG) Grenoble France\u00a02001."},{"key":"e_1_2_9_37_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11837\u2010013\u20100674\u20104"},{"key":"e_1_2_9_38_1","first-page":"593","article-title":"Ein Beitrag zur Optik der Farbanstriche","volume":"12","author":"Kubelka P.","year":"1931","journal-title":"Zeitschrift f\u00fcr Technische Physik"},{"key":"e_1_2_9_39_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRev.136.B864"},{"key":"e_1_2_9_40_1","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201103791"},{"key":"e_1_2_9_41_1","first-page":"307","volume-title":"Methods in Enzymology","author":"Otwinowski Z.","year":"1997"},{"key":"e_1_2_9_42_1","unstructured":"G. M.Sheldrick SHELXT\u20102013: Program for Crystal Structure Solution University of G\u00f6ttingen G\u00f6ttingen Germany(2013)."},{"key":"e_1_2_9_43_1","doi-asserted-by":"publisher","DOI":"10.1107\/S2053229614024218"},{"key":"e_1_2_9_44_1","doi-asserted-by":"publisher","DOI":"10.1107\/S0021889812029111"},{"key":"e_1_2_9_45_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRev.140.A1133"},{"key":"e_1_2_9_46_1","doi-asserted-by":"publisher","DOI":"10.1103\/RevModPhys.64.1045"},{"key":"e_1_2_9_47_1","doi-asserted-by":"publisher","DOI":"10.1524\/zkri.220.5.567.65075"},{"key":"e_1_2_9_48_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.77.3865"},{"key":"e_1_2_9_49_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.1656857"}],"container-title":["Small"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/smll.75897","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/smll.75897","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/smll.75897","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T14:35:49Z","timestamp":1790260549000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/smll.75897"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9,24]]},"references-count":48,"alternative-id":["10.1002\/smll.75897"],"URL":"https:\/\/doi.org\/10.1002\/smll.75897","archive":["Portico"],"relation":{},"ISSN":["1613-6810","1613-6829"],"issn-type":[{"value":"1613-6810","type":"print"},{"value":"1613-6829","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,9,24]]},"assertion":[{"value":"2026-06-02","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-09-15","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-09-24","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e75897"}}