DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Ki-Bong | ko |
dc.contributor.author | Choi, Shin-Hei | ko |
dc.contributor.author | Jeon, June | ko |
dc.contributor.author | Lee, Hyo-Sun | ko |
dc.contributor.author | Huh, Jung-Oh | ko |
dc.contributor.author | Yoo, Jae-Duk | ko |
dc.contributor.author | Kim, Jong-Taek | ko |
dc.contributor.author | Lee, Chang-Hee | ko |
dc.contributor.author | Lee, Yoon-Sup | ko |
dc.contributor.author | Churchill, David G | ko |
dc.date.accessioned | 2013-03-11T03:51:48Z | - |
dc.date.available | 2013-03-11T03:51:48Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2011-06 | - |
dc.identifier.citation | INORGANIC CHEMISTRY, v.50, no.12, pp.5351 - 5360 | - |
dc.identifier.issn | 0020-1669 | - |
dc.identifier.uri | http://hdl.handle.net/10203/98190 | - |
dc.description.abstract | One 8-phenyl and two 8-mesityl-substituted "scorpionate"-like BODIPY-type species of the formula [3,4,4-tris(S-R-(2-thieny))-8-(2,4,6-k-phenyl)-4-bora-3a,4a-diaza-s- indacene (R = H, R' = H, 3a; R, = H, R' = Me, 2a; R, = Me, R' = Me, 2b)] have been synthesized and fully characterized. Importantly, differences in their solution (MeCN) optical Cu2+ and Hg2+ probing capacity via SSS-chelation were investigated. Compounds 2a-3a were prepared from the requisite 8-substituted BODIPY complexes. They were characterized first by complete H-1, B-11 and C-13 NMR spectroscopic assignments (CD3Cl or CD3C(O)CD3); the molecular structures of 2a and 3a were determined by X-ray crystallography. Compounds 2a-3a were studied by UV-vis and fluorescence spectroscopy [Phi(F) = 0.27 +/- 0.013 (2a); 0.024 +/- 0.0016 (2b); 0.0034 +/- 0.00047 (3a)]. Importantly, low [Cu2+] with 3a (<3.0 x 10(-5) M) gave rise to an increase of fluorescence intensity (off-on; 6.3-fold), whereas with 2a it decreased (on-off). When [Hg2+] (<3.0 x 10(-5) M) was added to,213, the lambda(em,max) value increased (off-on; 3.2-fold), and for 2a, it decreased (on-off). The association constant (K-a) for Hg2+ . 2a was determined to be 3120 +/- 307 M-1. An approximate stoichiometric 1:1 binding determined by Job plot analysis is in line with successful DFT modeling of SSS-Cu2+ binding for this system type. H-1 NMR spectroscopy also revealed tentative sets of product complex peaks. These simple differences caused by formal ligand Me-group incorporation are the first for any related fluorophores, to the best of our knowledge. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Control of On-Off or Off-On Fluorescent and Optical [Cu(2+)] and [Hg(2+)] Responses via Formal Me/H Substitution in Fully Characterized Thienyl "Scorpionate"-like BODIPY Systems | - |
dc.type | Article | - |
dc.identifier.wosid | 000291422100013 | - |
dc.identifier.scopusid | 2-s2.0-79958854401 | - |
dc.type.rims | ART | - |
dc.citation.volume | 50 | - |
dc.citation.issue | 12 | - |
dc.citation.beginningpage | 5351 | - |
dc.citation.endingpage | 5360 | - |
dc.citation.publicationname | INORGANIC CHEMISTRY | - |
dc.identifier.doi | 10.1021/ic101681h | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Jeon, June | - |
dc.contributor.localauthor | Lee, Yoon-Sup | - |
dc.contributor.localauthor | Churchill, David G | - |
dc.contributor.nonIdAuthor | Lee, Hyo-Sun | - |
dc.contributor.nonIdAuthor | Huh, Jung-Oh | - |
dc.contributor.nonIdAuthor | Yoo, Jae-Duk | - |
dc.contributor.nonIdAuthor | Lee, Chang-Hee | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | SPECTROSCOPIC PROPERTIES | - |
dc.subject.keywordPlus | ALZHEIMERS-DISEASE | - |
dc.subject.keywordPlus | OXIDATIVE STRESS | - |
dc.subject.keywordPlus | 1ST-ROW ELEMENTS | - |
dc.subject.keywordPlus | SENSOR | - |
dc.subject.keywordPlus | COPPER | - |
dc.subject.keywordPlus | ION | - |
dc.subject.keywordPlus | BINDING | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | CHEMOSENSOR | - |
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