{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T05:51:59Z","timestamp":1778737919075,"version":"3.51.4"},"reference-count":54,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2019,5,7]],"date-time":"2019-05-07T00:00:00Z","timestamp":1557187200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002261","name":"Russian Foundation for Basic Research","doi-asserted-by":"publisher","award":["18-43-703016"],"award-info":[{"award-number":["18-43-703016"]}],"id":[{"id":"10.13039\/501100002261","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003243","name":"Ministerstvo Zdravotnictv\u00ed Cesk\u00e9 Republiky","doi-asserted-by":"publisher","award":["15-33459A"],"award-info":[{"award-number":["15-33459A"]}],"id":[{"id":"10.13039\/501100003243","id-type":"DOI","asserted-by":"publisher"}]},{"name":"the European Structural and Investment Funds, OP RDE-funded project 'ChemJets'","award":["CZ.02.2.69\/0.0\/0.0\/16_027\/0008351"],"award-info":[{"award-number":["CZ.02.2.69\/0.0\/0.0\/16_027\/0008351"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this contribution, we propose a novel functional surface-enhanced Raman spectroscopy (SERS) platform for the detection of one of the most hazardous heavy metal ions, Hg2+. The design of the proposed sensor is based on the combination of surface plasmon-polariton (SPP) supporting gold grating with the high homogeneity of the response and enhancement and mercaptosuccinic acid (MSA) based specific recognition layer. For the first time, diazonium grafted 4-ethynylphenyl groups have undergone the sunlight-induced thiol\u2013yne reaction with MSA in the presence of Eosine Y. The developed SERS platform provides an extremely sensitive, selective, and convenient analytical procedure to detect mercury ions with limit of detection (LOD) as low as 10\u221210 M (0.027 \u00b5g\/L) with excellent selectivity over other metals. The developed SERS sensor is compatible with a portable SERS spectrophotometer and does not require the expensive equipment for statistical methods of analysis.<\/jats:p>","DOI":"10.3390\/s19092110","type":"journal-article","created":{"date-parts":[[2019,5,9]],"date-time":"2019-05-09T11:22:35Z","timestamp":1557400955000},"page":"2110","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["Preparation of Selective and Reproducible SERS Sensors of Hg2+ Ions via a Sunlight-Induced Thiol\u2013Yne Reaction on Gold Gratings"],"prefix":"10.3390","volume":"19","author":[{"given":"Olga","family":"Guselnikova","sequence":"first","affiliation":[{"name":"Department of Solid State Engineering, University of Chemistry and Technology, 16628 Prague, Czech Republic"},{"name":"Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russian"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vaclav","family":"Svorcik","sequence":"additional","affiliation":[{"name":"Department of Solid State Engineering, University of Chemistry and Technology, 16628 Prague, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Oleksiy","family":"Lyutakov","sequence":"additional","affiliation":[{"name":"Department of Solid State Engineering, University of Chemistry and Technology, 16628 Prague, Czech Republic"},{"name":"Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russian"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6098-983X","authenticated-orcid":false,"given":"Mohamed M.","family":"Chehimi","sequence":"additional","affiliation":[{"name":"ICMPE (UMR 7182), CNRS, UPEC, Universit\u00e9 Paris Est, F-94320 Thiais, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9713-1290","authenticated-orcid":false,"given":"Pavel S.","family":"Postnikov","sequence":"additional","affiliation":[{"name":"Department of Solid State Engineering, University of Chemistry and Technology, 16628 Prague, Czech Republic"},{"name":"Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russian"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,5,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"192","DOI":"10.1007\/s11356-014-3544-x","article-title":"Health Risk and Significance of Mercury in the Environment","volume":"22","author":"Li","year":"2015","journal-title":"Environ. 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