A novel benzidine based Schiff base “turn-on” fluorescent chemosensor for selective recognition of Zn^sup 2
A novel chemo-sensor based on diaminobenzidine (H2L) was synthesized and characterized. The chemo-sensor shows selective “turn-on” fluorescence response to Zn2+ ion over a variety of other competing metal ions such as Al3+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+, and Cd2+. The strong fluorescent emission can...
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Veröffentlicht in: | Sensors and actuators. B, Chemical Chemical, 2017-03, Vol.241, p.1218 |
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creator | Kumar, Mukesh Kumar, Amit Singh, Mantu Kumar Sahu, Sumanta K John, Rohith P |
description | A novel chemo-sensor based on diaminobenzidine (H2L) was synthesized and characterized. The chemo-sensor shows selective “turn-on” fluorescence response to Zn2+ ion over a variety of other competing metal ions such as Al3+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+, and Cd2+. The strong fluorescent emission can be observed even at ppm level concentration of the probe in the presence of Zn2+ with over 54 fold intensity enhancement at 509 nm. Similar fluorescence behaviour is also observed in a variety of solvents and solvent mixtures in the presence of zinc(II). The fluorescent emission is also detected when the H2L sample solution containing Zn2+ is exposed to UV radiation. The sensitive nature of fluorescent response of the probe to Zn2+ is gauged from the very low detection limit of 8.6 × 10−9 M. The chemo-sensor H2L binds to zinc(II) in 1:1 stoichiometry as determined by Job's plot and the binding constant is calculated as 7.8 × 104 M−1. |
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The chemo-sensor shows selective “turn-on” fluorescence response to Zn2+ ion over a variety of other competing metal ions such as Al3+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+, and Cd2+. The strong fluorescent emission can be observed even at ppm level concentration of the probe in the presence of Zn2+ with over 54 fold intensity enhancement at 509 nm. Similar fluorescence behaviour is also observed in a variety of solvents and solvent mixtures in the presence of zinc(II). The fluorescent emission is also detected when the H2L sample solution containing Zn2+ is exposed to UV radiation. The sensitive nature of fluorescent response of the probe to Zn2+ is gauged from the very low detection limit of 8.6 × 10−9 M. The chemo-sensor H2L binds to zinc(II) in 1:1 stoichiometry as determined by Job's plot and the binding constant is calculated as 7.8 × 104 M−1.</description><identifier>ISSN: 0925-4005</identifier><identifier>EISSN: 1873-3077</identifier><language>eng</language><publisher>Lausanne: Elsevier Science Ltd</publisher><subject>Aluminum ; Chemical sensors ; Chemoreceptors ; Cobalt ; Copper ; Emission ; Fluorescence ; Imines ; Manganese ions ; Organic chemicals ; Sensors ; Stoichiometry ; Ultraviolet radiation ; Zinc</subject><ispartof>Sensors and actuators. B, Chemical, 2017-03, Vol.241, p.1218</ispartof><rights>Copyright Elsevier Science Ltd. 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The chemo-sensor shows selective “turn-on” fluorescence response to Zn2+ ion over a variety of other competing metal ions such as Al3+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+, and Cd2+. The strong fluorescent emission can be observed even at ppm level concentration of the probe in the presence of Zn2+ with over 54 fold intensity enhancement at 509 nm. Similar fluorescence behaviour is also observed in a variety of solvents and solvent mixtures in the presence of zinc(II). The fluorescent emission is also detected when the H2L sample solution containing Zn2+ is exposed to UV radiation. The sensitive nature of fluorescent response of the probe to Zn2+ is gauged from the very low detection limit of 8.6 × 10−9 M. The chemo-sensor H2L binds to zinc(II) in 1:1 stoichiometry as determined by Job's plot and the binding constant is calculated as 7.8 × 104 M−1.</description><subject>Aluminum</subject><subject>Chemical sensors</subject><subject>Chemoreceptors</subject><subject>Cobalt</subject><subject>Copper</subject><subject>Emission</subject><subject>Fluorescence</subject><subject>Imines</subject><subject>Manganese ions</subject><subject>Organic chemicals</subject><subject>Sensors</subject><subject>Stoichiometry</subject><subject>Ultraviolet radiation</subject><subject>Zinc</subject><issn>0925-4005</issn><issn>1873-3077</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqNjUFqAkEQRRtJwInJHQqyHiinR2dcSohkH1dZKNpWx5axSrt6XGTlQczlPEkGyQFcfD6P_-D3TDasK5tbrKoHk-GkGOUl4qhvnlR3iFjaMWZGpsByogbWxD9hE5hgvVLawKfbBu9vANfzJbWRc-Hr-Rd800okdcQJ3Jb2osQqEXwXpYZcCieCSE6-OaQgDOLhixfaHqB4No9-1Si9_PfAvM7e528f-SHKsSVNy510V920LLAe13ZY2tLeZ_0B12JNlw</recordid><startdate>20170331</startdate><enddate>20170331</enddate><creator>Kumar, Mukesh</creator><creator>Kumar, Amit</creator><creator>Singh, Mantu Kumar</creator><creator>Sahu, Sumanta K</creator><creator>John, Rohith P</creator><general>Elsevier Science Ltd</general><scope>7SP</scope><scope>7SR</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20170331</creationdate><title>A novel benzidine based Schiff base “turn-on” fluorescent chemosensor for selective recognition of Zn^sup 2</title><author>Kumar, Mukesh ; Kumar, Amit ; Singh, Mantu Kumar ; Sahu, Sumanta K ; John, Rohith P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_journals_20868314343</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Aluminum</topic><topic>Chemical sensors</topic><topic>Chemoreceptors</topic><topic>Cobalt</topic><topic>Copper</topic><topic>Emission</topic><topic>Fluorescence</topic><topic>Imines</topic><topic>Manganese ions</topic><topic>Organic chemicals</topic><topic>Sensors</topic><topic>Stoichiometry</topic><topic>Ultraviolet radiation</topic><topic>Zinc</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kumar, Mukesh</creatorcontrib><creatorcontrib>Kumar, Amit</creatorcontrib><creatorcontrib>Singh, Mantu Kumar</creatorcontrib><creatorcontrib>Sahu, Sumanta K</creatorcontrib><creatorcontrib>John, Rohith P</creatorcontrib><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Sensors and actuators. B, Chemical</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kumar, Mukesh</au><au>Kumar, Amit</au><au>Singh, Mantu Kumar</au><au>Sahu, Sumanta K</au><au>John, Rohith P</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A novel benzidine based Schiff base “turn-on” fluorescent chemosensor for selective recognition of Zn^sup 2</atitle><jtitle>Sensors and actuators. B, Chemical</jtitle><date>2017-03-31</date><risdate>2017</risdate><volume>241</volume><spage>1218</spage><pages>1218-</pages><issn>0925-4005</issn><eissn>1873-3077</eissn><abstract>A novel chemo-sensor based on diaminobenzidine (H2L) was synthesized and characterized. The chemo-sensor shows selective “turn-on” fluorescence response to Zn2+ ion over a variety of other competing metal ions such as Al3+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+, and Cd2+. The strong fluorescent emission can be observed even at ppm level concentration of the probe in the presence of Zn2+ with over 54 fold intensity enhancement at 509 nm. Similar fluorescence behaviour is also observed in a variety of solvents and solvent mixtures in the presence of zinc(II). The fluorescent emission is also detected when the H2L sample solution containing Zn2+ is exposed to UV radiation. The sensitive nature of fluorescent response of the probe to Zn2+ is gauged from the very low detection limit of 8.6 × 10−9 M. The chemo-sensor H2L binds to zinc(II) in 1:1 stoichiometry as determined by Job's plot and the binding constant is calculated as 7.8 × 104 M−1.</abstract><cop>Lausanne</cop><pub>Elsevier Science Ltd</pub></addata></record> |
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subjects | Aluminum Chemical sensors Chemoreceptors Cobalt Copper Emission Fluorescence Imines Manganese ions Organic chemicals Sensors Stoichiometry Ultraviolet radiation Zinc |
title | A novel benzidine based Schiff base “turn-on” fluorescent chemosensor for selective recognition of Zn^sup 2 |
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