{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,4]],"date-time":"2025-11-04T15:54:35Z","timestamp":1762271675761,"version":"build-2065373602"},"reference-count":29,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2012,12,7]],"date-time":"2012-12-07T00:00:00Z","timestamp":1354838400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Rhodamine-based fluorescent chemosensors 1 and 2 exhibit selective fluorescence enhancement to Fe3+ and Hg2+ over other metal ions at 580 nm in CH3CN\/H2O (3\/1, v\/v) solution. Bis(rhodamine) chemosensor 1, under optimized conditions (CH3CN\/HEPES buffer (0.02 M, pH = 7.0) (95\/5, v\/v)), shows a high selectivity and sensitivity to Hg2+, with a linear working range of 0\u201350 \u03bcM, a wide pH span of 4\u201310, and a detection limit of 0.4 \u03bcM Hg2+.<\/jats:p>","DOI":"10.3390\/ijms131216822","type":"journal-article","created":{"date-parts":[[2012,12,7]],"date-time":"2012-12-07T11:07:28Z","timestamp":1354878448000},"page":"16822-16832","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Turn-On Fluorescent Chemosensor for Hg2+ Based on Multivalent Rhodamine Ligands"],"prefix":"10.3390","volume":"13","author":[{"given":"Xuemei","family":"Wang","sequence":"first","affiliation":[{"name":"Laboratory of Molecular Nanofabrication, MESA+ Institute for Nanotechnology, University of Twente, Enschede 7500 AE, The Netherlands"},{"name":"Department of Chemistry and Material Engineering, Logistic Engineering University, Chongqing 401311, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mudassir","family":"Iqbal","sequence":"additional","affiliation":[{"name":"Laboratory of Molecular Nanofabrication, MESA+ Institute for Nanotechnology, University of Twente, Enschede 7500 AE, The Netherlands"},{"name":"Department of Chemistry, University of Sargodha, Punjab 40100, Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jurriaan","family":"Huskens","sequence":"additional","affiliation":[{"name":"Laboratory of Molecular Nanofabrication, MESA+ Institute for Nanotechnology, University of Twente, Enschede 7500 AE, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Willem","family":"Verboom","sequence":"additional","affiliation":[{"name":"Laboratory of Molecular Nanofabrication, MESA+ Institute for Nanotechnology, University of Twente, Enschede 7500 AE, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2012,12,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"373","DOI":"10.1007\/BF00279168","article-title":"Dispersal of mercury-contaminated sediments by geomorphic processes, Sixmile Canyon, Nevada, USA: Implications to site characterization and remediation of fluvial environments","volume":"86","author":"Miller","year":"1996","journal-title":"Water Air Soil Pollut"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1002\/tox.10116","article-title":"Environmental exposure to mercury and its toxicopathologic implications for public health","volume":"18","author":"Tchounwou","year":"2003","journal-title":"Environ. 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Binding Constants: The Measurement of Molecular Complex Stability, Wiley-Interscience."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Valeur, B (2002). Molecular Fluorescence: Principles and Applications, Wiley-VCH.","DOI":"10.1002\/3527600248"},{"key":"ref_27","unstructured":"Ks cannot be determined in this Hg2+ concentration range."},{"key":"ref_28","unstructured":"Skoog, D.A., Holler, F.J., and Nieman, A (2000). Principles of Instrumental Analysis, Saunders. [5th ed]."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1016\/S0003-2670(02)00005-3","article-title":"Novel spectrofluorimetric method for the determination of sulfite with rhodamine B hydrazide in a micellar medium","volume":"456","author":"Yang","year":"2002","journal-title":"Anal. Chim. 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