{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T15:09:15Z","timestamp":1789830555678,"version":"4.0.1"},"reference-count":33,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,2,27]],"date-time":"2022-02-27T00:00:00Z","timestamp":1645920000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Zhongkai University of Agriculture and Engineering","award":["KA210319290"],"award-info":[{"award-number":["KA210319290"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Aiming at constructing photoresponsive spin crossover (SCO) behavior, herein we designed a new ligand Abtz (Abtz = (E)-N-(4-((E)-phenyldiazenyl)phenyl)-1-(thiazol-4-yl)methanimine) which was decorated by a photochromic azobenzene group. Based on this photochromic ligand, a mononuclear Fe(II) SCO molecule [Fe(Abtz)3](BF4)2\u00b7(EAC)2 (1, EAC = ethyl acetate) was successfully synthesized and showed a complete one-step SCO behavior. Under continuous UV light and blue-light exposure, the cis\u2013trans photoisomerization of both ligand Abtz and compound 1 in the liquid phase was confirmed through UV\u2013Vis spectra. Moreover, the 1H-NMR spectra of Abtz reveal a trans\u2013cis conversion ratio of 37%. Although the UV\u2013Vis spectra reveal the photochromic behavior for 1 in the solution phase, the SCO behavior in the liquid state is absent according to the variable-temperature Evans method, suggesting the possible decomposition. Moreover, in the solid state, the cis\u2013trans photoisomerization of both Abtz and 1 was not observed, due to the steric hindrance.<\/jats:p>","DOI":"10.3390\/molecules27051571","type":"journal-article","created":{"date-parts":[[2022,2,27]],"date-time":"2022-02-27T20:48:33Z","timestamp":1645994913000},"page":"1571","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["A Mononuclear Iron(II) Spin-Crossover Molecule Decorated by Photochromic Azobenzene Group"],"prefix":"10.3390","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1772-4761","authenticated-orcid":false,"given":"Jiang-Zhen","family":"Qiu","sequence":"first","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong","family":"You","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ye","family":"Yu","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhuo-Fan","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cheng-Jie","family":"Guo","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi-Ling","family":"Zhong","sequence":"additional","affiliation":[{"name":"Guangzhou Key Laboratory for Clean Energy and Materials, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei-Quan","family":"Lin","sequence":"additional","affiliation":[{"name":"Guangzhou Key Laboratory for Clean Energy and Materials, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xu-Gang","family":"Shu","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,2,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"4119","DOI":"10.1039\/c1cs15046d","article-title":"Structure:function relationships in molecular spin-crossover complexes","volume":"40","author":"Halcrow","year":"2011","journal-title":"Chem. 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