File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Synthesis, Characterization, and Photochromic Studies of Cyclometalated Iridium(III) Complexes Containing a Spironaphthoxazine Moiety

TitleSynthesis, Characterization, and Photochromic Studies of Cyclometalated Iridium(III) Complexes Containing a Spironaphthoxazine Moiety
Authors
KeywordsCrystal structure
Design for testability
Electronic properties
Ligands
Light
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/organometallics
Citation
Organometallics, 2019, v. 38 n. 19, p. 3542-3552 How to Cite?
AbstractA series of cyclometalated iridium(III) complexes has been designed and synthesized, and their photophysical, photochromic, and electrochemical properties have been studied. The X-ray crystal structure of complex 2 has been determined. The emission properties of the complexes have been shown to be readily perturbed through the modification of the electronic properties of the phenylpyridine ligand. With different substituents at the phenylpyridine ligand of iridium(III) complexes of 1 (−H), 2 (−OMe), 3 (−CHO), and 4 (−CF3), they can display intense 3MLCT [dπ(Ir) → π*(diimine)] luminescence from 530 to 640 nm to span across the green to orange region. The spectral assignment is also in agreement with the electrochemical studies and DFT calculations. In addition, the photochromic behavior can be easily modulated by varying the substituents on the C∧N ligand without the need for tedious modification of the spirooxazine framework. By analyzing the kinetic profiles of backward bleaching reactions, less electron-rich iridium(III) complexes can stabilize the merocyanine form with a higher activation barrier. The studies have provided not only fundamental understanding on structure–property relationships that govern the versatile luminescence behavior of these Ir(III) complexes but also the guiding principles in the molecular design for the future developments of visible light-driven photoswitches.
Persistent Identifierhttp://hdl.handle.net/10722/277444
ISSN
2019 Impact Factor: 3.804
2015 SCImago Journal Rankings: 2.043

 

DC FieldValueLanguage
dc.contributor.authorLiu, JIE-
dc.contributor.authorChan, AKW-
dc.contributor.authorNg, M-
dc.contributor.authorHong, EYH-
dc.contributor.authorWu, NMW-
dc.contributor.authorWu, L-
dc.contributor.authorYam, VWW-
dc.date.accessioned2019-09-20T08:51:12Z-
dc.date.available2019-09-20T08:51:12Z-
dc.date.issued2019-
dc.identifier.citationOrganometallics, 2019, v. 38 n. 19, p. 3542-3552-
dc.identifier.issn0276-7333-
dc.identifier.urihttp://hdl.handle.net/10722/277444-
dc.description.abstractA series of cyclometalated iridium(III) complexes has been designed and synthesized, and their photophysical, photochromic, and electrochemical properties have been studied. The X-ray crystal structure of complex 2 has been determined. The emission properties of the complexes have been shown to be readily perturbed through the modification of the electronic properties of the phenylpyridine ligand. With different substituents at the phenylpyridine ligand of iridium(III) complexes of 1 (−H), 2 (−OMe), 3 (−CHO), and 4 (−CF3), they can display intense 3MLCT [dπ(Ir) → π*(diimine)] luminescence from 530 to 640 nm to span across the green to orange region. The spectral assignment is also in agreement with the electrochemical studies and DFT calculations. In addition, the photochromic behavior can be easily modulated by varying the substituents on the C∧N ligand without the need for tedious modification of the spirooxazine framework. By analyzing the kinetic profiles of backward bleaching reactions, less electron-rich iridium(III) complexes can stabilize the merocyanine form with a higher activation barrier. The studies have provided not only fundamental understanding on structure–property relationships that govern the versatile luminescence behavior of these Ir(III) complexes but also the guiding principles in the molecular design for the future developments of visible light-driven photoswitches.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/organometallics-
dc.relation.ispartofOrganometallics-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in [JournalTitle], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].-
dc.subjectCrystal structure-
dc.subjectDesign for testability-
dc.subjectElectronic properties-
dc.subjectLigands-
dc.subjectLight-
dc.titleSynthesis, Characterization, and Photochromic Studies of Cyclometalated Iridium(III) Complexes Containing a Spironaphthoxazine Moiety-
dc.typeArticle-
dc.identifier.emailChan, AKW: alan7788@hku.hk-
dc.identifier.emailNg, M: mkyng@HKUCC-COM.hku.hk-
dc.identifier.emailWu, NMW: nathanwu@hku.hk-
dc.identifier.emailYam, VWW: wwyam@hku.hk-
dc.identifier.authorityYam, VWW=rp00822-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acs.organomet.9b00359-
dc.identifier.scopuseid_2-s2.0-85072586775-
dc.identifier.hkuros305878-
dc.identifier.volume38-
dc.identifier.issue19-
dc.identifier.spage3542-
dc.identifier.epage3552-
dc.publisher.placeUnited States-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats