Highly bluish-white light emissive and redox active conjugated poly-N-phenyl anthranilic acid polymer fluoroprobe for analytical sensing
An efficient fluorescent and redox type conjugated poly-N-phenyl anthranilic acid (PNPA) was synthesised via chemical oxidative polymerisation of N-phenyl anthranilic acid (NPA) using FeCl3 as oxidising agent in ethanol medium. The polymer in sulphuric acid solution denoted as PNPA-H have highly int...
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| description | An efficient fluorescent and redox type conjugated poly-N-phenyl anthranilic acid (PNPA) was synthesised via chemical oxidative polymerisation of N-phenyl anthranilic acid (NPA) using FeCl3 as oxidising agent in ethanol medium. The polymer in sulphuric acid solution denoted as PNPA-H have highly intense bluish-white fluorescence. The intense bluish-white light emission of polymer was quenched upon the addition of oxidising analytes like Ce4+, MnO4− and Cr2O72- ions. The fluorescence quenching concentration at which the above three analytes oxidises the polymer were determined from three independent methods like naked eye fluorescence detection, UV–visible spectroscopy and spectrofluorometry. The mechanism of fluorescence quenching has been explained on the basis of the oxidation of diphenyl benzidine dicarboxylic acid repeating units of PNPA-H (in reduced form) into non-fluorescent diphenyl diquinoid dicarboxylic acid units (in oxidised form) by the oxidising analytes. The mole ratio plot of [analyte]/[polymer] against fluorescence intensity have revealed different stoichiometry for a particular analyte leading to quenching of fluorescence of polymer, which have striking influence on the redox potential of the analytes. The limit of detection (LOD) for naked eye fluorescence quenching was found to be 0.5 μM, 0.75 μM, and 25 μM for Ce4+, MnO4− and Cr2O72- respectively and sensitivity of quenching action was obtained highest for MnO4− ions and least for Cr2O72- ions from stern-volmer plots. The oxidised and non-fluorescent diphenyl diquinoid dicarboxylic acid units of PNPA-H have been reduced back to fluorescent diphenyl benzidine dicarboxylic units with reducing biomolecules like ascorbic acid, which indicate the redox reversibility of the system.
[Display omitted]
•An efficient redox type fluorescent and conjugated poly-N-phenyl anthranilic acid (PNPA) was synthesised via chemical oxidative polymerisation of N-phenyl anthranilic acid (NPA) using FeCl3 as oxidising agent in ethanol medium.•The intense bluish-white light emission of polymer PNPA-H in sulphuric acid was quenched upon the addition of oxidising analytes like Ce4+, MnO4− and Cr2O72- ions.•The fluorescence quenching concentration has been determined from three independent methods like naked eye fluorescence detection, UV–visible spectroscopy and spectrofluorometry.•The limit of detection (LOD) for naked eye fluorescence quenching was found to be 0.75 μM, 0.5 μM, and 25 μM for MnO4−, Ce4+ and Cr2O |
| doi_str_mv | 10.1016/j.polymer.2019.121747 |
| format | Article |
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[Display omitted]
•An efficient redox type fluorescent and conjugated poly-N-phenyl anthranilic acid (PNPA) was synthesised via chemical oxidative polymerisation of N-phenyl anthranilic acid (NPA) using FeCl3 as oxidising agent in ethanol medium.•The intense bluish-white light emission of polymer PNPA-H in sulphuric acid was quenched upon the addition of oxidising analytes like Ce4+, MnO4− and Cr2O72- ions.•The fluorescence quenching concentration has been determined from three independent methods like naked eye fluorescence detection, UV–visible spectroscopy and spectrofluorometry.•The limit of detection (LOD) for naked eye fluorescence quenching was found to be 0.75 μM, 0.5 μM, and 25 μM for MnO4−, Ce4+ and Cr2O72- respectively.•The sensitivity of the fluorescence was highest for MnO4− ions and least for Cr2O72- ions from stern-volmer plots.</description><identifier>ISSN: 0032-3861</identifier><identifier>EISSN: 1873-2291</identifier><identifier>DOI: 10.1016/j.polymer.2019.121747</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Acids ; Addition polymerization ; Analytical chemistry ; Anthranilic acid ; Ascorbic acid ; Biomolecules ; Chemical synthesis ; Colorimetric sensors ; Conjugated polymer ; Dicarboxylic acids ; Emission analysis ; Ethanol ; Ferric chloride ; Fluorescence ; Fluorescence quenching ; Fluorescence spectroscopy ; Ions ; Iron chlorides ; Light emission ; Naked eye detection ; Organic chemistry ; Oxidation ; Poly-N-Phenyl anthranilic acid ; Polymerization ; Polymers ; Quenching ; Redox potential ; Spectroscopy ; Stoichiometry ; Sulfuric acid ; White light</subject><ispartof>Polymer (Guilford), 2019-10, Vol.181, p.121747, Article 121747</ispartof><rights>2019 Elsevier Ltd</rights><rights>Copyright Elsevier BV Oct 24, 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c374t-2f20eab607a5c68fea72778c5218a3929b882aa0efcbdde4daa4286bcc9af0333</citedby><cites>FETCH-LOGICAL-c374t-2f20eab607a5c68fea72778c5218a3929b882aa0efcbdde4daa4286bcc9af0333</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0032386119307530$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids></links><search><creatorcontrib>Das, K. Rohini</creatorcontrib><creatorcontrib>Antony, M. Jinish</creatorcontrib><creatorcontrib>Varghese, Shinto</creatorcontrib><title>Highly bluish-white light emissive and redox active conjugated poly-N-phenyl anthranilic acid polymer fluoroprobe for analytical sensing</title><title>Polymer (Guilford)</title><description>An efficient fluorescent and redox type conjugated poly-N-phenyl anthranilic acid (PNPA) was synthesised via chemical oxidative polymerisation of N-phenyl anthranilic acid (NPA) using FeCl3 as oxidising agent in ethanol medium. The polymer in sulphuric acid solution denoted as PNPA-H have highly intense bluish-white fluorescence. The intense bluish-white light emission of polymer was quenched upon the addition of oxidising analytes like Ce4+, MnO4− and Cr2O72- ions. The fluorescence quenching concentration at which the above three analytes oxidises the polymer were determined from three independent methods like naked eye fluorescence detection, UV–visible spectroscopy and spectrofluorometry. The mechanism of fluorescence quenching has been explained on the basis of the oxidation of diphenyl benzidine dicarboxylic acid repeating units of PNPA-H (in reduced form) into non-fluorescent diphenyl diquinoid dicarboxylic acid units (in oxidised form) by the oxidising analytes. The mole ratio plot of [analyte]/[polymer] against fluorescence intensity have revealed different stoichiometry for a particular analyte leading to quenching of fluorescence of polymer, which have striking influence on the redox potential of the analytes. The limit of detection (LOD) for naked eye fluorescence quenching was found to be 0.5 μM, 0.75 μM, and 25 μM for Ce4+, MnO4− and Cr2O72- respectively and sensitivity of quenching action was obtained highest for MnO4− ions and least for Cr2O72- ions from stern-volmer plots. The oxidised and non-fluorescent diphenyl diquinoid dicarboxylic acid units of PNPA-H have been reduced back to fluorescent diphenyl benzidine dicarboxylic units with reducing biomolecules like ascorbic acid, which indicate the redox reversibility of the system.
[Display omitted]
•An efficient redox type fluorescent and conjugated poly-N-phenyl anthranilic acid (PNPA) was synthesised via chemical oxidative polymerisation of N-phenyl anthranilic acid (NPA) using FeCl3 as oxidising agent in ethanol medium.•The intense bluish-white light emission of polymer PNPA-H in sulphuric acid was quenched upon the addition of oxidising analytes like Ce4+, MnO4− and Cr2O72- ions.•The fluorescence quenching concentration has been determined from three independent methods like naked eye fluorescence detection, UV–visible spectroscopy and spectrofluorometry.•The limit of detection (LOD) for naked eye fluorescence quenching was found to be 0.75 μM, 0.5 μM, and 25 μM for MnO4−, Ce4+ and Cr2O72- respectively.•The sensitivity of the fluorescence was highest for MnO4− ions and least for Cr2O72- ions from stern-volmer plots.</description><subject>Acids</subject><subject>Addition polymerization</subject><subject>Analytical chemistry</subject><subject>Anthranilic acid</subject><subject>Ascorbic acid</subject><subject>Biomolecules</subject><subject>Chemical synthesis</subject><subject>Colorimetric sensors</subject><subject>Conjugated polymer</subject><subject>Dicarboxylic acids</subject><subject>Emission analysis</subject><subject>Ethanol</subject><subject>Ferric chloride</subject><subject>Fluorescence</subject><subject>Fluorescence quenching</subject><subject>Fluorescence spectroscopy</subject><subject>Ions</subject><subject>Iron chlorides</subject><subject>Light emission</subject><subject>Naked eye detection</subject><subject>Organic chemistry</subject><subject>Oxidation</subject><subject>Poly-N-Phenyl anthranilic acid</subject><subject>Polymerization</subject><subject>Polymers</subject><subject>Quenching</subject><subject>Redox potential</subject><subject>Spectroscopy</subject><subject>Stoichiometry</subject><subject>Sulfuric acid</subject><subject>White light</subject><issn>0032-3861</issn><issn>1873-2291</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqFkE1r3DAQhkVJoZu0P6Eg6NlbfXgt-1RKyEchNJf0LMbyeC2jtbaSnMT_oD87Ms69lxmYeWbmnZeQr5ztOePV93F_9m45YdgLxps9F1yV6gPZ8VrJQoiGX5AdY1IUsq74J3IZ48gYEwdR7si_e3sc3EJbN9s4FC-DTUhdriWKJxujfUYKU0cDdv6VgklrwfhpnI-QsKPr5eJ3cR5wWlwm0xBgss6azNqtnYXR3s0--HPwLdLehwyCW5I14GjEKdrp-Jl87MFF_PKer8if25un6_vi4fHu1_XPh8JIVaZC9IIhtBVTcDBV3SMooVRtDoLXIBvRtHUtABj2pu06LDuAUtRVa0wDPZNSXpFv294s5u-MMenRzyHLiVpI3pRqjZk6bJQJPsaAvT4He4KwaM70aroe9ftvejVdb6bnuR_bHOYXnm3uRmNxMtjZgCbpztv_bHgDjZeR5Q</recordid><startdate>20191024</startdate><enddate>20191024</enddate><creator>Das, K. Rohini</creator><creator>Antony, M. Jinish</creator><creator>Varghese, Shinto</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7T7</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope></search><sort><creationdate>20191024</creationdate><title>Highly bluish-white light emissive and redox active conjugated poly-N-phenyl anthranilic acid polymer fluoroprobe for analytical sensing</title><author>Das, K. Rohini ; Antony, M. Jinish ; Varghese, Shinto</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c374t-2f20eab607a5c68fea72778c5218a3929b882aa0efcbdde4daa4286bcc9af0333</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Acids</topic><topic>Addition polymerization</topic><topic>Analytical chemistry</topic><topic>Anthranilic acid</topic><topic>Ascorbic acid</topic><topic>Biomolecules</topic><topic>Chemical synthesis</topic><topic>Colorimetric sensors</topic><topic>Conjugated polymer</topic><topic>Dicarboxylic acids</topic><topic>Emission analysis</topic><topic>Ethanol</topic><topic>Ferric chloride</topic><topic>Fluorescence</topic><topic>Fluorescence quenching</topic><topic>Fluorescence spectroscopy</topic><topic>Ions</topic><topic>Iron chlorides</topic><topic>Light emission</topic><topic>Naked eye detection</topic><topic>Organic chemistry</topic><topic>Oxidation</topic><topic>Poly-N-Phenyl anthranilic acid</topic><topic>Polymerization</topic><topic>Polymers</topic><topic>Quenching</topic><topic>Redox potential</topic><topic>Spectroscopy</topic><topic>Stoichiometry</topic><topic>Sulfuric acid</topic><topic>White light</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Das, K. 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Rohini</au><au>Antony, M. Jinish</au><au>Varghese, Shinto</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Highly bluish-white light emissive and redox active conjugated poly-N-phenyl anthranilic acid polymer fluoroprobe for analytical sensing</atitle><jtitle>Polymer (Guilford)</jtitle><date>2019-10-24</date><risdate>2019</risdate><volume>181</volume><spage>121747</spage><pages>121747-</pages><artnum>121747</artnum><issn>0032-3861</issn><eissn>1873-2291</eissn><abstract>An efficient fluorescent and redox type conjugated poly-N-phenyl anthranilic acid (PNPA) was synthesised via chemical oxidative polymerisation of N-phenyl anthranilic acid (NPA) using FeCl3 as oxidising agent in ethanol medium. The polymer in sulphuric acid solution denoted as PNPA-H have highly intense bluish-white fluorescence. The intense bluish-white light emission of polymer was quenched upon the addition of oxidising analytes like Ce4+, MnO4− and Cr2O72- ions. The fluorescence quenching concentration at which the above three analytes oxidises the polymer were determined from three independent methods like naked eye fluorescence detection, UV–visible spectroscopy and spectrofluorometry. The mechanism of fluorescence quenching has been explained on the basis of the oxidation of diphenyl benzidine dicarboxylic acid repeating units of PNPA-H (in reduced form) into non-fluorescent diphenyl diquinoid dicarboxylic acid units (in oxidised form) by the oxidising analytes. The mole ratio plot of [analyte]/[polymer] against fluorescence intensity have revealed different stoichiometry for a particular analyte leading to quenching of fluorescence of polymer, which have striking influence on the redox potential of the analytes. The limit of detection (LOD) for naked eye fluorescence quenching was found to be 0.5 μM, 0.75 μM, and 25 μM for Ce4+, MnO4− and Cr2O72- respectively and sensitivity of quenching action was obtained highest for MnO4− ions and least for Cr2O72- ions from stern-volmer plots. The oxidised and non-fluorescent diphenyl diquinoid dicarboxylic acid units of PNPA-H have been reduced back to fluorescent diphenyl benzidine dicarboxylic units with reducing biomolecules like ascorbic acid, which indicate the redox reversibility of the system.
[Display omitted]
•An efficient redox type fluorescent and conjugated poly-N-phenyl anthranilic acid (PNPA) was synthesised via chemical oxidative polymerisation of N-phenyl anthranilic acid (NPA) using FeCl3 as oxidising agent in ethanol medium.•The intense bluish-white light emission of polymer PNPA-H in sulphuric acid was quenched upon the addition of oxidising analytes like Ce4+, MnO4− and Cr2O72- ions.•The fluorescence quenching concentration has been determined from three independent methods like naked eye fluorescence detection, UV–visible spectroscopy and spectrofluorometry.•The limit of detection (LOD) for naked eye fluorescence quenching was found to be 0.75 μM, 0.5 μM, and 25 μM for MnO4−, Ce4+ and Cr2O72- respectively.•The sensitivity of the fluorescence was highest for MnO4− ions and least for Cr2O72- ions from stern-volmer plots.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.polymer.2019.121747</doi></addata></record> |
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| subjects | Acids Addition polymerization Analytical chemistry Anthranilic acid Ascorbic acid Biomolecules Chemical synthesis Colorimetric sensors Conjugated polymer Dicarboxylic acids Emission analysis Ethanol Ferric chloride Fluorescence Fluorescence quenching Fluorescence spectroscopy Ions Iron chlorides Light emission Naked eye detection Organic chemistry Oxidation Poly-N-Phenyl anthranilic acid Polymerization Polymers Quenching Redox potential Spectroscopy Stoichiometry Sulfuric acid White light |
| title | Highly bluish-white light emissive and redox active conjugated poly-N-phenyl anthranilic acid polymer fluoroprobe for analytical sensing |
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