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In aqueous solutions, (\u2212)-1 and (+)-1 aggregate into one-dimensional helical chain structures through Pt\u00b7\u00b7\u00b7Pt, \u03c0\u2013\u03c0, and hydrophobic\u2013hydrophobic interactions. (\u2212)-3 and (+)-3 represent a novel helical structure with Pt\u2013Pt bonds. The formation of helical structures results in enhanced and distinct chiroptical properties as evidenced by circular dichroism spectra. Circularly polarized luminescence (CPL) was observed from the aggregates of (\u2212)-1 and (+)-1 in water, as well as (\u2212)-3 and (+)-3 in dichloromethane. The CPL activity can be switched reversibly (for (\u2212)-1 and (+)-1) or irreversibly (for (\u2212)-3 and (+)-3) by varying the temperature.<\/jats:p>","DOI":"10.1021\/ic5019136","type":"journal-article","created":{"date-parts":[[2014,12,11]],"date-time":"2014-12-11T10:53:11Z","timestamp":1418295191000},"page":"143-152","source":"Crossref","is-referenced-by-count":120,"title":["Potential Switchable Circularly Polarized Luminescence\nfrom Chiral Cyclometalated Platinum(II) Complexes"],"prefix":"10.1021","volume":"54","author":[{"given":"Xiao-Peng","family":"Zhang","sequence":"first","affiliation":[{"name":"Nanjing University , , ,","place":["Nanjing, People\u2019s Republic of China, 210093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Victoria Y.","family":"Chang","sequence":"additional","affiliation":[{"name":"San Jose\u0301 State University , , One Washington Square , , ,","place":["San Jose\u0301, California, United States, 95192-0101"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jian","family":"Liu","sequence":"additional","affiliation":[{"name":"Nanjing University , , ,","place":["Nanjing, People\u2019s Republic of China, 210093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao-Liang","family":"Yang","sequence":"additional","affiliation":[{"name":"Nanjing University , , ,","place":["Nanjing, People\u2019s Republic of China, 210093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Huang","sequence":"additional","affiliation":[{"name":"Nanjing University , , ,","place":["Nanjing, People\u2019s Republic of China, 210093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yizhi","family":"Li","sequence":"additional","affiliation":[{"name":"Nanjing University , , ,","place":["Nanjing, People\u2019s Republic of China, 210093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cheng-Hui","family":"Li","sequence":"additional","affiliation":[{"name":"Nanjing University , , ,","place":["Nanjing, People\u2019s Republic of China, 210093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gilles","family":"Muller","sequence":"additional","affiliation":[{"name":"San Jose\u0301 State University , , One Washington Square , , ,","place":["San Jose\u0301, California, United States, 95192-0101"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao-Zeng","family":"You","sequence":"additional","affiliation":[{"name":"Nanjing University , , ,","place":["Nanjing, People\u2019s Republic of China, 210093"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2014,12,11]]},"reference":[{"key":"2026090303483280900_cit1a","first-page":"289","volume-title":"Handbook on the Physics\nand Chemistry of Rare Earths","author":"Riehl","year":"2005"},{"key":"2026090303483280900_cit1b","first-page":"65","article-title":"Circularly Polarized Luminescence\nSpectroscopy and Emission-Detected Circular Dichroism","volume-title":"Comprehensive Chiroptical Spectroscopy","author":"Riehl","year":"2012","edition":"1"},{"key":"2026090303483280900_cit1c","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1021\/ja064902x","volume":"129","author":"Petoud","year":"2007","journal-title":"J. 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