{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T12:27:15Z","timestamp":1788352035557,"version":"build-2803163510"},"reference-count":27,"publisher":"Optica Publishing Group","issue":"22","license":[{"start":{"date-parts":[[2021,11,15]],"date-time":"2021-11-15T00:00:00Z","timestamp":1636934400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v1#VOR"},{"start":{"date-parts":[[2021,11,15]],"date-time":"2021-11-15T00:00:00Z","timestamp":1636934400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["11874157"],"award-info":[{"award-number":["11874157"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["11964032"],"award-info":[{"award-number":["11964032"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Science and Technology Program of Guangzhou","award":["2019050001"],"award-info":[{"award-number":["2019050001"]}]},{"DOI":"10.13039\/501100012245","name":"Science and Technology Planning Project of Guangdong Province","doi-asserted-by":"publisher","award":["2019A1515011014"],"award-info":[{"award-number":["2019A1515011014"]}],"id":[{"id":"10.13039\/501100012245","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Key Project of Education Department of Guangdong Province","award":["2018KZDXM025"],"award-info":[{"award-number":["2018KZDXM025"]}]},{"name":"Key Project of Education Department of Guangdong Province","award":["2019GKTSCX009"],"award-info":[{"award-number":["2019GKTSCX009"]}]},{"name":"Guangdong Provincial Key Laboratory of Optical Information Materials and Technology","award":["2017B030301007"],"award-info":[{"award-number":["2017B030301007"]}]},{"name":"Open Fund of Guangdong Provincial Key Laboratory of Information Photonics Technology","award":["GKPT20-12"],"award-info":[{"award-number":["GKPT20-12"]}]},{"name":"National Centre for International Research on Green Optoelectronics"},{"DOI":"10.13039\/501100013314","name":"111 Project","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100013314","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2021,11,15]]},"abstract":"Formaldehyde (FA) is one of the most common pollutants, which has tremendous harm to humans and environment. In this work, 4-amino-3-pentene-2-one (Fluoral-p) and \n \n\t\n\t \n\t \n\t S<\/mml:mi>\n\t i<\/mml:mi>\n\t O<\/mml:mi>\n\t <\/mml:mrow>\n\t \n\t 2<\/mml:mn>\n\t <\/mml:mrow>\n\t <\/mml:msub>\n\t<\/mml:mrow>\n <\/mml:math>\n <\/jats:inline-formula> coated quantum dot (\n \n\t\n\t Q<\/mml:mi>\n\t D<\/mml:mi>\n\t<\/mml:mrow>\n\t\n\t @<\/mml:mo>\n\t<\/mml:mrow>\n\t\n\t \n\t \n\t S<\/mml:mi>\n\t i<\/mml:mi>\n\t O<\/mml:mi>\n\t <\/mml:mrow>\n\t \n\t 2<\/mml:mn>\n\t <\/mml:mrow>\n\t <\/mml:msub>\n\t<\/mml:mrow>\n <\/mml:math>\n <\/jats:inline-formula>) were combined to implement a new ratiometric fluorescence probe \n \n\t\n\t Q<\/mml:mi>\n\t D<\/mml:mi>\n\t<\/mml:mrow>\n\t\n\t @<\/mml:mo>\n\t<\/mml:mrow>\n\t\n\t \n\t \n\t S<\/mml:mi>\n\t i<\/mml:mi>\n\t O<\/mml:mi>\n\t <\/mml:mrow>\n\t \n\t 2<\/mml:mn>\n\t <\/mml:mrow>\n\t <\/mml:msub>\n\t<\/mml:mrow>\n <\/mml:math>\n <\/jats:inline-formula>-Fluoral-p for FA detection. In addition, by utilization of polyvinyl alcohol (PVA) and \n \n\t\n\t \n\t \n\t S<\/mml:mi>\n\t i<\/mml:mi>\n\t O<\/mml:mi>\n\t <\/mml:mrow>\n\t \n\t 2<\/mml:mn>\n\t <\/mml:mrow>\n\t <\/mml:msub>\n\t<\/mml:mrow>\n <\/mml:math>\n <\/jats:inline-formula> microsphere (SM), a kind of PVA-SM microstructure was assembled with \n \n\t\n\t Q<\/mml:mi>\n\t D<\/mml:mi>\n\t<\/mml:mrow>\n\t\n\t @<\/mml:mo>\n\t<\/mml:mrow>\n\t\n\t \n\t \n\t S<\/mml:mi>\n\t i<\/mml:mi>\n\t O<\/mml:mi>\n\t <\/mml:mrow>\n\t \n\t 2<\/mml:mn>\n\t <\/mml:mrow>\n\t <\/mml:msub>\n\t<\/mml:mrow>\n <\/mml:math>\n <\/jats:inline-formula>-Fluoral-p to composite a signal enhanced sensing film. The \n \n\t\n\t Q<\/mml:mi>\n\t D<\/mml:mi>\n\t<\/mml:mrow>\n\t\n\t @<\/mml:mo>\n\t<\/mml:mrow>\n\t\n\t \n\t \n\t S<\/mml:mi>\n\t i<\/mml:mi>\n\t O<\/mml:mi>\n\t <\/mml:mrow>\n\t \n\t 2<\/mml:mn>\n\t <\/mml:mrow>\n\t <\/mml:msub>\n\t<\/mml:mrow>\n <\/mml:math>\n <\/jats:inline-formula>-Fluoral-p exhibited good response to 0-400\u00a0mg\/L FA solution and an enhancement around 15 folds was realized after introducing PVA-SM. In both situations, the probe showed linear relationship to FA concentration (\n \n\t\n\t \n\t C<\/mml:mi>\n\t \n\t F<\/mml:mi>\n\t A<\/mml:mi>\n\t <\/mml:mrow>\n\t <\/mml:msub>\n\t<\/mml:mrow>\n <\/mml:math>\n <\/jats:inline-formula>), with detection limits of 14 and 0.5\u00a0mg\/L, respectively. Also, the sensing film showed a good linear response to FA gas in the range of 0 to 2\u00a0ppm, with a detection limit 0.03\u00a0ppm. As a result, the PVA-SM enhanced ratiometric fluorescence probe features high sensitivity, low detection limit, good selectivity, as well as portable, which can serve as a useful tool for investigating FA in solution and gas at room temperature.<\/jats:p>","DOI":"10.1364\/ol.441296","type":"journal-article","created":{"date-parts":[[2021,10,26]],"date-time":"2021-10-26T16:31:11Z","timestamp":1635265871000},"page":"5759","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["PVA-SM microstructure enhanced ratiometric fluorescence probe for formaldehyde detection in solution and gas"],"prefix":"10.1364","volume":"46","author":[{"given":"Tianci","family":"Wang","sequence":"first","affiliation":[{"name":"South China Normal University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haiyan","family":"Wang","sequence":"additional","affiliation":[{"name":"Guangdong Industry Technical College"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pengfei","family":"Xia","sequence":"additional","affiliation":[{"name":"South China Normal University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sheng","family":"Xue","sequence":"additional","affiliation":[{"name":"South China Normal University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guanjie","family":"Yang","sequence":"additional","affiliation":[{"name":"South China Normal University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Heng","family":"Li","sequence":"additional","affiliation":[{"name":"South China Normal University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zongbao","family":"Li","sequence":"additional","affiliation":[{"name":"Tongren University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaofang","family":"Jiang","sequence":"additional","affiliation":[{"name":"South China Normal University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaobo","family":"Xing","sequence":"additional","affiliation":[{"name":"South China Normal University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2021,11,15]]},"reference":[{"key":"ol-46-22-5759-R1","doi-asserted-by":"publisher","first-page":"9841","DOI":"10.1039\/C6TC03862J","volume":"4","author":"Zhang","year":"2016","journal-title":"J. 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