Surface Plasmon Resonance Sensitivity Enhancement Based on Protonated Polyaniline Films Doped by Aluminum Nitrate
Complex composite films based on polyaniline (PANI) doped hydrochloric acid (HCl) incorporated with aluminum nitrate (Al(NO<sub>3</sub>)<sub>3</sub>) on Au-layer were designed and synthesized as a surface plasmon resonance (SPR) sensing device. The physicochemical properties...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Biosensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-6374/12/12/1122 |
| _version_ | 1797461217322729472 |
|---|---|
| author | Qais M. Al-Bataineh Victoria Shpacovitch Diyar Sadiq Ahmad Telfah Roland Hergenröder |
| author_facet | Qais M. Al-Bataineh Victoria Shpacovitch Diyar Sadiq Ahmad Telfah Roland Hergenröder |
| author_sort | Qais M. Al-Bataineh |
| collection | DOAJ |
| description | Complex composite films based on polyaniline (PANI) doped hydrochloric acid (HCl) incorporated with aluminum nitrate (Al(NO<sub>3</sub>)<sub>3</sub>) on Au-layer were designed and synthesized as a surface plasmon resonance (SPR) sensing device. The physicochemical properties of (PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> complex composite films were studied for various Al(NO<sub>3</sub>)<sub>3</sub> concentrations (0, 2, 4, 8, 16, and 32 wt.%). The refractive index of the (PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> complex composite films increased continuously as Al(NO<sub>3</sub>)<sub>3</sub> concentrations increased. The electrical conductivity values increased from 5.10 µS/cm to 10.00 µS/cm as Al(NO<sub>3</sub>)<sub>3</sub> concentration increased to 32 wt.%. The sensitivity of the SPR sensing device was investigated using a theoretical approach and experimental measurements. The theoretical system of SPR measurement confirmed that increasing Al(NO<sub>3</sub>)<sub>3</sub> in (PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> complex composite films enhanced the sensitivity from about 114.5 [Deg/RIU] for Au-layer to 159.0 [Deg/RIU] for Au-((PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> (32 wt.%)). In addition, the signal-to-noise ratio for Au-layer was 3.95, which increased after coating by (PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> (32 wt.%) complex composite layer to 8.82. Finally, we conclude that coating Au-layer by (PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> complex composite films enhances the sensitivity of the SPR sensing device. |
| first_indexed | 2024-03-09T17:16:15Z |
| format | Article |
| id | doaj.art-76c8c11d76774dbaa85c238e3228b8af |
| institution | Directory Open Access Journal |
| issn | 2079-6374 |
| language | English |
| last_indexed | 2024-03-09T17:16:15Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biosensors |
| spelling | doaj.art-76c8c11d76774dbaa85c238e3228b8af2023-11-24T13:36:55ZengMDPI AGBiosensors2079-63742022-12-011212112210.3390/bios12121122Surface Plasmon Resonance Sensitivity Enhancement Based on Protonated Polyaniline Films Doped by Aluminum NitrateQais M. Al-Bataineh0Victoria Shpacovitch1Diyar Sadiq2Ahmad Telfah3Roland Hergenröder4Leibniz Institut für Analytische Wissenschaften-ISAS-e.V., Bunsen-Kirchhoff-Straße 11, 44139 Dortmund, GermanyLeibniz Institut für Analytische Wissenschaften-ISAS-e.V., Bunsen-Kirchhoff-Straße 11, 44139 Dortmund, GermanyCentre for Material Science and Nanotechnology, Department of Physics, The University of Zakho, Zakho Box. 12, IraqLeibniz Institut für Analytische Wissenschaften-ISAS-e.V., Bunsen-Kirchhoff-Straße 11, 44139 Dortmund, GermanyLeibniz Institut für Analytische Wissenschaften-ISAS-e.V., Bunsen-Kirchhoff-Straße 11, 44139 Dortmund, GermanyComplex composite films based on polyaniline (PANI) doped hydrochloric acid (HCl) incorporated with aluminum nitrate (Al(NO<sub>3</sub>)<sub>3</sub>) on Au-layer were designed and synthesized as a surface plasmon resonance (SPR) sensing device. The physicochemical properties of (PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> complex composite films were studied for various Al(NO<sub>3</sub>)<sub>3</sub> concentrations (0, 2, 4, 8, 16, and 32 wt.%). The refractive index of the (PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> complex composite films increased continuously as Al(NO<sub>3</sub>)<sub>3</sub> concentrations increased. The electrical conductivity values increased from 5.10 µS/cm to 10.00 µS/cm as Al(NO<sub>3</sub>)<sub>3</sub> concentration increased to 32 wt.%. The sensitivity of the SPR sensing device was investigated using a theoretical approach and experimental measurements. The theoretical system of SPR measurement confirmed that increasing Al(NO<sub>3</sub>)<sub>3</sub> in (PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> complex composite films enhanced the sensitivity from about 114.5 [Deg/RIU] for Au-layer to 159.0 [Deg/RIU] for Au-((PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> (32 wt.%)). In addition, the signal-to-noise ratio for Au-layer was 3.95, which increased after coating by (PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> (32 wt.%) complex composite layer to 8.82. Finally, we conclude that coating Au-layer by (PANI-HCl)/Al(NO<sub>3</sub>)<sub>3</sub> complex composite films enhances the sensitivity of the SPR sensing device.https://www.mdpi.com/2079-6374/12/12/1122polyaniline (PANI)aluminum nitrate (Al(NO<sub>3</sub>)<sub>3</sub>)complex composite filmssurface plasmon resonance (SPR)electrical conductivity |
| spellingShingle | Qais M. Al-Bataineh Victoria Shpacovitch Diyar Sadiq Ahmad Telfah Roland Hergenröder Surface Plasmon Resonance Sensitivity Enhancement Based on Protonated Polyaniline Films Doped by Aluminum Nitrate Biosensors polyaniline (PANI) aluminum nitrate (Al(NO<sub>3</sub>)<sub>3</sub>) complex composite films surface plasmon resonance (SPR) electrical conductivity |
| title | Surface Plasmon Resonance Sensitivity Enhancement Based on Protonated Polyaniline Films Doped by Aluminum Nitrate |
| title_full | Surface Plasmon Resonance Sensitivity Enhancement Based on Protonated Polyaniline Films Doped by Aluminum Nitrate |
| title_fullStr | Surface Plasmon Resonance Sensitivity Enhancement Based on Protonated Polyaniline Films Doped by Aluminum Nitrate |
| title_full_unstemmed | Surface Plasmon Resonance Sensitivity Enhancement Based on Protonated Polyaniline Films Doped by Aluminum Nitrate |
| title_short | Surface Plasmon Resonance Sensitivity Enhancement Based on Protonated Polyaniline Films Doped by Aluminum Nitrate |
| title_sort | surface plasmon resonance sensitivity enhancement based on protonated polyaniline films doped by aluminum nitrate |
| topic | polyaniline (PANI) aluminum nitrate (Al(NO<sub>3</sub>)<sub>3</sub>) complex composite films surface plasmon resonance (SPR) electrical conductivity |
| url | https://www.mdpi.com/2079-6374/12/12/1122 |
| work_keys_str_mv | AT qaismalbataineh surfaceplasmonresonancesensitivityenhancementbasedonprotonatedpolyanilinefilmsdopedbyaluminumnitrate AT victoriashpacovitch surfaceplasmonresonancesensitivityenhancementbasedonprotonatedpolyanilinefilmsdopedbyaluminumnitrate AT diyarsadiq surfaceplasmonresonancesensitivityenhancementbasedonprotonatedpolyanilinefilmsdopedbyaluminumnitrate AT ahmadtelfah surfaceplasmonresonancesensitivityenhancementbasedonprotonatedpolyanilinefilmsdopedbyaluminumnitrate AT rolandhergenroder surfaceplasmonresonancesensitivityenhancementbasedonprotonatedpolyanilinefilmsdopedbyaluminumnitrate |