Sensitive and Discriminative Fluorescent Detection of Volatile Primary Aliphatic Diamine Vapors from Monoamines
The discriminative detection of volatile primary aliphatic diamines (VPADs) is a relevant and timely issue. This paper explores the distinctive optical features of H-type and J-type aggregates on paper-based (PB) films, namely H-PB and J-PB films, respectively, of a Lewis acidic Zn(salen)-type compl...
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2024-12-01
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| author | Agostino Attinà Ivan Pietro Oliveri Massimiliano Gaeta Santo Di Bella |
| author_facet | Agostino Attinà Ivan Pietro Oliveri Massimiliano Gaeta Santo Di Bella |
| author_sort | Agostino Attinà |
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| description | The discriminative detection of volatile primary aliphatic diamines (VPADs) is a relevant and timely issue. This paper explores the distinctive optical features of H-type and J-type aggregates on paper-based (PB) films, namely H-PB and J-PB films, respectively, of a Lewis acidic Zn(salen)-type complex upon chemisorption of vapors of ditopic VPADs versus those of monotopic volatile amines. While volatile monotopic Lewis bases upon chemisorption give rise to mono-adducts accompanied by enhancement of the fluorescence, in contrast, VPADs act as ditopic bases forming di-adducts with distinct optical properties, leading to fluorescence quenching. This behavior enables the sensitive and discriminative detection of VPAD vapors from those of volatile monoamines. For example, for ethylenediamine (EDA), using J-PB films, sensitive detection is achieved with a LOD down to 6.6 ppm, lower than the OSHA permissible exposure limit of 10 ppm for EDA, and a linear dynamic range up to 100 ppm. Instead, H-PB films enable the detection of EDA vapors at higher ppm concentrations (up to 3000 ppm) with a linearity of up to 1000 ppm. Thus, the combination of both H-PB and J-PB films of the Zn(salen)-type complex represents a unique example of the sensitive and discriminative detection of EDA vapors in such a wide concentration range. |
| format | Article |
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| language | English |
| publishDate | 2024-12-01 |
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| spelling | doaj-art-cd1709a4e15a44dc86ded0f164ba7d422025-08-20T02:57:28ZengMDPI AGMolecules1420-30492024-12-012924594710.3390/molecules29245947Sensitive and Discriminative Fluorescent Detection of Volatile Primary Aliphatic Diamine Vapors from MonoaminesAgostino Attinà0Ivan Pietro Oliveri1Massimiliano Gaeta2Santo Di Bella3Dipartimento di Scienze Chimiche, Università di Catania, Viale Andrea Doria 6, 95125 Catania, ItalyDipartimento di Scienze Chimiche, Università di Catania, Viale Andrea Doria 6, 95125 Catania, ItalyDipartimento di Scienze Chimiche, Università di Catania, Viale Andrea Doria 6, 95125 Catania, ItalyDipartimento di Scienze Chimiche, Università di Catania, Viale Andrea Doria 6, 95125 Catania, ItalyThe discriminative detection of volatile primary aliphatic diamines (VPADs) is a relevant and timely issue. This paper explores the distinctive optical features of H-type and J-type aggregates on paper-based (PB) films, namely H-PB and J-PB films, respectively, of a Lewis acidic Zn(salen)-type complex upon chemisorption of vapors of ditopic VPADs versus those of monotopic volatile amines. While volatile monotopic Lewis bases upon chemisorption give rise to mono-adducts accompanied by enhancement of the fluorescence, in contrast, VPADs act as ditopic bases forming di-adducts with distinct optical properties, leading to fluorescence quenching. This behavior enables the sensitive and discriminative detection of VPAD vapors from those of volatile monoamines. For example, for ethylenediamine (EDA), using J-PB films, sensitive detection is achieved with a LOD down to 6.6 ppm, lower than the OSHA permissible exposure limit of 10 ppm for EDA, and a linear dynamic range up to 100 ppm. Instead, H-PB films enable the detection of EDA vapors at higher ppm concentrations (up to 3000 ppm) with a linearity of up to 1000 ppm. Thus, the combination of both H-PB and J-PB films of the Zn(salen)-type complex represents a unique example of the sensitive and discriminative detection of EDA vapors in such a wide concentration range.https://www.mdpi.com/1420-3049/29/24/5947Zn(II) Schiff-base complexfluorescence quenchingsensing aliphatic diamine vaporspaper-based sensor |
| spellingShingle | Agostino Attinà Ivan Pietro Oliveri Massimiliano Gaeta Santo Di Bella Sensitive and Discriminative Fluorescent Detection of Volatile Primary Aliphatic Diamine Vapors from Monoamines Molecules Zn(II) Schiff-base complex fluorescence quenching sensing aliphatic diamine vapors paper-based sensor |
| title | Sensitive and Discriminative Fluorescent Detection of Volatile Primary Aliphatic Diamine Vapors from Monoamines |
| title_full | Sensitive and Discriminative Fluorescent Detection of Volatile Primary Aliphatic Diamine Vapors from Monoamines |
| title_fullStr | Sensitive and Discriminative Fluorescent Detection of Volatile Primary Aliphatic Diamine Vapors from Monoamines |
| title_full_unstemmed | Sensitive and Discriminative Fluorescent Detection of Volatile Primary Aliphatic Diamine Vapors from Monoamines |
| title_short | Sensitive and Discriminative Fluorescent Detection of Volatile Primary Aliphatic Diamine Vapors from Monoamines |
| title_sort | sensitive and discriminative fluorescent detection of volatile primary aliphatic diamine vapors from monoamines |
| topic | Zn(II) Schiff-base complex fluorescence quenching sensing aliphatic diamine vapors paper-based sensor |
| url | https://www.mdpi.com/1420-3049/29/24/5947 |
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