Rapid-Response and Wide-Range pH Sensors Enabled by Self-Assembled Functional PAni/PAA Layer on No-Core Fiber
The measurement of pH has received great attention in diverse fields, such as clinical diagnostics, environmental protection, and food safety. Optical fiber sensors are widely used for pH sensing because of their great advantages. In this work, an optical fiber pH sensor is fabricated, by combining...
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| Veröffentlicht in: | Materials 2022-10, Vol.15 (21), p.7449 |
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| creator | Long, Gang Wan, Liang Xia, Binyun Zhao, Chao Niu, Kunpeng Hou, Jianguo Lyu, Dajuan Li, Litong Zhu, Fangdong Wang, Ning |
| description | The measurement of pH has received great attention in diverse fields, such as clinical diagnostics, environmental protection, and food safety. Optical fiber sensors are widely used for pH sensing because of their great advantages. In this work, an optical fiber pH sensor is fabricated, by combining the merits of the multimode interference configuration and pH-sensitive polyaniline/polyacrylic acid (PAni/PAA) coatings, which was successfully in situ deposited on the no-core fiber (NCF) by the layer-by-layer (LBL) self-assembly method. The sensors’ performance was experimentally characterized when used for pH detection. It has a high sensitivity of 0.985 nm/pH and a great linear response in a universal pH range of 2–12. The response time and recovery time is measured to be less than 10 s. In addition, its temperature sensitivity is tested to be about 0.01 nm/°C with a low temperature crosstalk effect, which makes it promising for detecting pH in the liquid phase with temperature variation. The sensors also demonstrated easy fabrication, good stability, and repeatability, which are adapted to pH detection in most practical applications. |
| doi_str_mv | 10.3390/ma15217449 |
| format | Article |
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Optical fiber sensors are widely used for pH sensing because of their great advantages. In this work, an optical fiber pH sensor is fabricated, by combining the merits of the multimode interference configuration and pH-sensitive polyaniline/polyacrylic acid (PAni/PAA) coatings, which was successfully in situ deposited on the no-core fiber (NCF) by the layer-by-layer (LBL) self-assembly method. The sensors’ performance was experimentally characterized when used for pH detection. It has a high sensitivity of 0.985 nm/pH and a great linear response in a universal pH range of 2–12. The response time and recovery time is measured to be less than 10 s. In addition, its temperature sensitivity is tested to be about 0.01 nm/°C with a low temperature crosstalk effect, which makes it promising for detecting pH in the liquid phase with temperature variation. The sensors also demonstrated easy fabrication, good stability, and repeatability, which are adapted to pH detection in most practical applications.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma15217449</identifier><identifier>PMID: 36363041</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Coatings ; Crosstalk ; Diagnostic equipment (Medical) ; Environmental protection ; Fiber optics ; Hydrogen-ion concentration ; Liquid phases ; Low temperature ; Optical fibers ; Polyacrylic acid ; Polyanilines ; Polymerization ; Polymers ; Polyvinyl alcohol ; Quantum dots ; Recovery time ; Response time ; Self-assembly ; Sensitivity ; Sensors ; Simulation ; Time measurement</subject><ispartof>Materials, 2022-10, Vol.15 (21), p.7449</ispartof><rights>COPYRIGHT 2022 MDPI AG</rights><rights>2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). 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The sensors also demonstrated easy fabrication, good stability, and repeatability, which are adapted to pH detection in most practical applications.</description><subject>Coatings</subject><subject>Crosstalk</subject><subject>Diagnostic equipment (Medical)</subject><subject>Environmental protection</subject><subject>Fiber optics</subject><subject>Hydrogen-ion concentration</subject><subject>Liquid phases</subject><subject>Low temperature</subject><subject>Optical fibers</subject><subject>Polyacrylic acid</subject><subject>Polyanilines</subject><subject>Polymerization</subject><subject>Polymers</subject><subject>Polyvinyl alcohol</subject><subject>Quantum dots</subject><subject>Recovery time</subject><subject>Response time</subject><subject>Self-assembly</subject><subject>Sensitivity</subject><subject>Sensors</subject><subject>Simulation</subject><subject>Time measurement</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNpdkU1r3DAQhkVpaEKSS3-BoJdScKJv25eCWbJNYWnCpqVHIVujrYItudK6sP--ajb0S3OQePXMqxkNQq8pueK8JdeToZLRWoj2BTqjbasq2grx8q_zKbrM-ZGUxTltWPsKnXJVggh6hqatmb2ttpDnGDJgEyz-6i1UWxN2gOdb_AAhx5TxTTD9CBb3hyKNrupyhulJWS9h2PsYzIjvu-Cv77sOb8wBEo4Bf4rVKibAa99DukAnzowZLp_3c_RlffN5dVtt7j58XHWbahCM7SvWkFqCcIoOdGBUOUd6oSSrVa363koimeipk5a70nvLnFVMFg0Ys4I0gp-j90ffeeknsAOEfTKjnpOfTDroaLz-9yb4b3oXf-hWScGZLAZvnw1S_L5A3uvJ5wHG0QSIS9as5rKpKRGkoG_-Qx_jkspnPFFCNQ2vWaGujtTOjKB9cLG8O5SwMPkhBnC-6F0tZC1IS5uS8O6YMKSYcwL3u3pK9K_J6z-T5z8BPVeb-g</recordid><startdate>20221024</startdate><enddate>20221024</enddate><creator>Long, Gang</creator><creator>Wan, Liang</creator><creator>Xia, Binyun</creator><creator>Zhao, Chao</creator><creator>Niu, Kunpeng</creator><creator>Hou, Jianguo</creator><creator>Lyu, Dajuan</creator><creator>Li, Litong</creator><creator>Zhu, Fangdong</creator><creator>Wang, Ning</creator><general>MDPI AG</general><general>MDPI</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20221024</creationdate><title>Rapid-Response and Wide-Range pH Sensors Enabled by Self-Assembled Functional PAni/PAA Layer on No-Core Fiber</title><author>Long, Gang ; 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Optical fiber sensors are widely used for pH sensing because of their great advantages. In this work, an optical fiber pH sensor is fabricated, by combining the merits of the multimode interference configuration and pH-sensitive polyaniline/polyacrylic acid (PAni/PAA) coatings, which was successfully in situ deposited on the no-core fiber (NCF) by the layer-by-layer (LBL) self-assembly method. The sensors’ performance was experimentally characterized when used for pH detection. It has a high sensitivity of 0.985 nm/pH and a great linear response in a universal pH range of 2–12. The response time and recovery time is measured to be less than 10 s. In addition, its temperature sensitivity is tested to be about 0.01 nm/°C with a low temperature crosstalk effect, which makes it promising for detecting pH in the liquid phase with temperature variation. The sensors also demonstrated easy fabrication, good stability, and repeatability, which are adapted to pH detection in most practical applications.</abstract><cop>Basel</cop><pub>MDPI AG</pub><pmid>36363041</pmid><doi>10.3390/ma15217449</doi><oa>free_for_read</oa></addata></record> |
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| source | MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals; PubMed Central; Free Full-Text Journals in Chemistry; PubMed Central Open Access |
| subjects | Coatings Crosstalk Diagnostic equipment (Medical) Environmental protection Fiber optics Hydrogen-ion concentration Liquid phases Low temperature Optical fibers Polyacrylic acid Polyanilines Polymerization Polymers Polyvinyl alcohol Quantum dots Recovery time Response time Self-assembly Sensitivity Sensors Simulation Time measurement |
| title | Rapid-Response and Wide-Range pH Sensors Enabled by Self-Assembled Functional PAni/PAA Layer on No-Core Fiber |
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