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Article: Selective Ag(I) Binding, H2S Sensing, and White-Light Emission from an Easy-to-Make Porous Conjugated Polymer

TitleSelective Ag(I) Binding, H2S Sensing, and White-Light Emission from an Easy-to-Make Porous Conjugated Polymer
Authors
Issue Date2014
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html
Citation
Journal of the American Chemical Society, 2014, v. 136, n. 7, p. 2818-2824 How to Cite?
AbstractSeparating silver (Ag+) from lead (Pb2+) is one of the many merits of the porous polymer framework reported here. The selective metal binding stems from the well-defined chelating unit of N-heterocycles, which consists of a triazine (C3N3) ring bonded to three 3,5-dimethylpyrazole moieties. Such a rigid and open triad also serves as the distinct building unit in the fully conjugated 3D polymer scaffold. Because of its strong fluorescence and porosity (e.g., BET surface area: 355 m2/g), and because of the various types of metal species that can be readily taken up, this versatile framework is especially fit for functionalization. For example, with AgNO3loaded, the framework solid exhibits a brown color in response to water solutions of H2S, even at the dilution of 5.0 μM (0.17 ppm); whereas cysteine and other biologically relevant thiols do not cause notable change in color. In another example, tunable white-light emission was produced when an Ir(III) complex was doped (e.g., about 0.02% of the polymer weight) onto the framework. Mechanistically, the bound Ir(III) centers become highly emissive in the orange-red region, complementing the broad, bluish emission from the polymer host to result in the overall white-light quality: the color attributes of the emission are therefore easily tunable by the Ir(III) dopant concentration. With this exemplary study, we intend to highlight metal uptake as an effective approach to modify and enrich the properties of porous polymer frameworks and to stimulate interest in further examining metal-polymer interactions in the context of sensing, separation, catalyzes, and other applications. © 2014 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/202562
ISSN
2017 Impact Factor: 14.357
2015 SCImago Journal Rankings: 7.123

 

DC FieldValueLanguage
dc.contributor.authorLiu, Jen_US
dc.contributor.authorYee, KKen_US
dc.contributor.authorLo, KKWen_US
dc.contributor.authorZhang, KYen_US
dc.contributor.authorTo, WPen_US
dc.contributor.authorChe, CMen_US
dc.contributor.authorXu, Zen_US
dc.date.accessioned2014-09-19T08:41:05Z-
dc.date.available2014-09-19T08:41:05Z-
dc.date.issued2014en_US
dc.identifier.citationJournal of the American Chemical Society, 2014, v. 136, n. 7, p. 2818-2824en_US
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10722/202562-
dc.description.abstractSeparating silver (Ag+) from lead (Pb2+) is one of the many merits of the porous polymer framework reported here. The selective metal binding stems from the well-defined chelating unit of N-heterocycles, which consists of a triazine (C3N3) ring bonded to three 3,5-dimethylpyrazole moieties. Such a rigid and open triad also serves as the distinct building unit in the fully conjugated 3D polymer scaffold. Because of its strong fluorescence and porosity (e.g., BET surface area: 355 m2/g), and because of the various types of metal species that can be readily taken up, this versatile framework is especially fit for functionalization. For example, with AgNO3loaded, the framework solid exhibits a brown color in response to water solutions of H2S, even at the dilution of 5.0 μM (0.17 ppm); whereas cysteine and other biologically relevant thiols do not cause notable change in color. In another example, tunable white-light emission was produced when an Ir(III) complex was doped (e.g., about 0.02% of the polymer weight) onto the framework. Mechanistically, the bound Ir(III) centers become highly emissive in the orange-red region, complementing the broad, bluish emission from the polymer host to result in the overall white-light quality: the color attributes of the emission are therefore easily tunable by the Ir(III) dopant concentration. With this exemplary study, we intend to highlight metal uptake as an effective approach to modify and enrich the properties of porous polymer frameworks and to stimulate interest in further examining metal-polymer interactions in the context of sensing, separation, catalyzes, and other applications. © 2014 American Chemical Society.-
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.htmlen_US
dc.relation.ispartofJournal of the American Chemical Societyen_US
dc.titleSelective Ag(I) Binding, H2S Sensing, and White-Light Emission from an Easy-to-Make Porous Conjugated Polymeren_US
dc.typeArticleen_US
dc.identifier.emailTo, WP: kevintwp@hku.hken_US
dc.identifier.emailChe, CM: cmche@hku.hken_US
dc.identifier.authorityChe, CM=rp00670en_US
dc.identifier.doi10.1021/ja411067a-
dc.identifier.scopuseid_2-s2.0-84894468789-
dc.identifier.hkuros236778en_US
dc.identifier.volume136en_US
dc.identifier.spage2818en_US
dc.identifier.epage2824en_US
dc.publisher.placeWashington DC, USAen_US

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