X-ray Structure Elucidation of a Pt-Metalloporphyrin and Its Application for Obtaining Sensitive AuNPs-Plasmonic Hybrids Capable of Detecting Triiodide Anions

The development of UV⁻vis spectrophotometric methods based on metalloporphyrins for fast, highly sensitive and selective anion detection, which avoids several of the practical challenges associated with other detection methods, is of tremendous importance in analytical chemistry. In this study, we f...

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Published inInternational journal of molecular sciences Vol. 20; no. 3; p. 710
Main Authors Fagadar-Cosma, Eugenia, Lascu, Anca, Shova, Sergiu, Zaltariov, Mirela-Fernanda, Birdeanu, Mihaela, Croitor, Lilia, Balan, Adriana, Anghel, Diana, Stamatin, Serban
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LanguageEnglish
Published Switzerland MDPI AG 07.02.2019
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Abstract The development of UV⁻vis spectrophotometric methods based on metalloporphyrins for fast, highly sensitive and selective anion detection, which avoids several of the practical challenges associated with other detection methods, is of tremendous importance in analytical chemistry. In this study, we focused on achieving a selective optical sensor for triiodide ion detection in traces based on a novel hybrid material comprised of Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) and gold nanoparticles (AuNPs). This sensor has high relevance in medical physiological tests. The structure of PtTMeOPP was investigated by single crystal X-ray diffraction in order to understand the metal surroundings and the molecule conformation and to assess if it qualifies as a potential sensitive material. It was proven that the Pt-porphyrin generated 1D H-bond supramolecular chains due to the weak C-H···O intermolecular hydrogen bonding. The presence of ordered voids in the crystal encouraged us to use PtTMeOPP as the sensing material for triiodide ion and to enhance its potential in a novel AuNPs/PtTMeOPP hybrid by the synergistic effects provided by the plasmonic gold nanoparticles. The spectrophotometric sensor is characterized by a detection limit of 1.5 × 10 M triiodide ion concentration and a remarkable confidence coefficient of 99.98%.
AbstractList The development of UV⁻vis spectrophotometric methods based on metalloporphyrins for fast, highly sensitive and selective anion detection, which avoids several of the practical challenges associated with other detection methods, is of tremendous importance in analytical chemistry. In this study, we focused on achieving a selective optical sensor for triiodide ion detection in traces based on a novel hybrid material comprised of Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) and gold nanoparticles (AuNPs). This sensor has high relevance in medical physiological tests. The structure of PtTMeOPP was investigated by single crystal X-ray diffraction in order to understand the metal surroundings and the molecule conformation and to assess if it qualifies as a potential sensitive material. It was proven that the Pt-porphyrin generated 1D H-bond supramolecular chains due to the weak C-H···O intermolecular hydrogen bonding. The presence of ordered voids in the crystal encouraged us to use PtTMeOPP as the sensing material for triiodide ion and to enhance its potential in a novel AuNPs/PtTMeOPP hybrid by the synergistic effects provided by the plasmonic gold nanoparticles. The spectrophotometric sensor is characterized by a detection limit of 1.5 × 10 M triiodide ion concentration and a remarkable confidence coefficient of 99.98%.
The development of UV⁻vis spectrophotometric methods based on metalloporphyrins for fast, highly sensitive and selective anion detection, which avoids several of the practical challenges associated with other detection methods, is of tremendous importance in analytical chemistry. In this study, we focused on achieving a selective optical sensor for triiodide ion detection in traces based on a novel hybrid material comprised of Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) and gold nanoparticles (AuNPs). This sensor has high relevance in medical physiological tests. The structure of PtTMeOPP was investigated by single crystal X-ray diffraction in order to understand the metal surroundings and the molecule conformation and to assess if it qualifies as a potential sensitive material. It was proven that the Pt-porphyrin generated 1D H-bond supramolecular chains due to the weak C-H···O intermolecular hydrogen bonding. The presence of ordered voids in the crystal encouraged us to use PtTMeOPP as the sensing material for triiodide ion and to enhance its potential in a novel AuNPs/PtTMeOPP hybrid by the synergistic effects provided by the plasmonic gold nanoparticles. The spectrophotometric sensor is characterized by a detection limit of 1.5 × 10−9 M triiodide ion concentration and a remarkable confidence coefficient of 99.98%.
The development of UV–vis spectrophotometric methods based on metalloporphyrins for fast, highly sensitive and selective anion detection, which avoids several of the practical challenges associated with other detection methods, is of tremendous importance in analytical chemistry. In this study, we focused on achieving a selective optical sensor for triiodide ion detection in traces based on a novel hybrid material comprised of Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) and gold nanoparticles (AuNPs). This sensor has high relevance in medical physiological tests. The structure of PtTMeOPP was investigated by single crystal X-ray diffraction in order to understand the metal surroundings and the molecule conformation and to assess if it qualifies as a potential sensitive material. It was proven that the Pt-porphyrin generated 1D H-bond supramolecular chains due to the weak C-H···O intermolecular hydrogen bonding. The presence of ordered voids in the crystal encouraged us to use PtTMeOPP as the sensing material for triiodide ion and to enhance its potential in a novel AuNPs/PtTMeOPP hybrid by the synergistic effects provided by the plasmonic gold nanoparticles. The spectrophotometric sensor is characterized by a detection limit of 1.5 × 10 −9 M triiodide ion concentration and a remarkable confidence coefficient of 99.98%.
The development of UV⁻vis spectrophotometric methods based on metalloporphyrins for fast, highly sensitive and selective anion detection, which avoids several of the practical challenges associated with other detection methods, is of tremendous importance in analytical chemistry. In this study, we focused on achieving a selective optical sensor for triiodide ion detection in traces based on a novel hybrid material comprised of Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) and gold nanoparticles (AuNPs). This sensor has high relevance in medical physiological tests. The structure of PtTMeOPP was investigated by single crystal X-ray diffraction in order to understand the metal surroundings and the molecule conformation and to assess if it qualifies as a potential sensitive material. It was proven that the Pt-porphyrin generated 1D H-bond supramolecular chains due to the weak C-H···O intermolecular hydrogen bonding. The presence of ordered voids in the crystal encouraged us to use PtTMeOPP as the sensing material for triiodide ion and to enhance its potential in a novel AuNPs/PtTMeOPP hybrid by the synergistic effects provided by the plasmonic gold nanoparticles. The spectrophotometric sensor is characterized by a detection limit of 1.5 × 10-9 M triiodide ion concentration and a remarkable confidence coefficient of 99.98%.
Iodine is concentrated by the human body predominantly in the thyroid gland [4] and in other important storage tissues (especially for individuals who had their thyroid glands removed), such as the salivary glands, gastric mucosa, breast tissues, choroid plexus, ovaries and sweat glands. Based on this property, triiodide ions are used in pharmacology for the quantitative determination of ascorbic acid and hydroquinone in drugs [5]; in controlling the environment or human health by monitoring chlorine and dissolved O2 in water [6]; in control of industrial processes by detection of copper and iron in ores [7]; and even as a temperature radiation detector [8,9]. Based on the already proven synergistic effects of gold nanoparticles on electro-optical properties of metalloporphyrins and with the purpose to develop a better sensor with high relevance in medical physiological tests, a hybrid of PtTMeOPP with AuNPs [30] was obtained and tested as a sensitive material in the optical detection of triiodide ions. According to X-ray crystallography, the crystal has a molecular structure that is comprised of PtTMeOPP complex units and DMF as solvate molecules in a ratio of 2:1.
The development of UV–vis spectrophotometric methods based on metalloporphyrins for fast, highly sensitive and selective anion detection, which avoids several of the practical challenges associated with other detection methods, is of tremendous importance in analytical chemistry. In this study, we focused on achieving a selective optical sensor for triiodide ion detection in traces based on a novel hybrid material comprised of Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) and gold nanoparticles (AuNPs). This sensor has high relevance in medical physiological tests. The structure of PtTMeOPP was investigated by single crystal X-ray diffraction in order to understand the metal surroundings and the molecule conformation and to assess if it qualifies as a potential sensitive material. It was proven that the Pt-porphyrin generated 1D H-bond supramolecular chains due to the weak C-H···O intermolecular hydrogen bonding. The presence of ordered voids in the crystal encouraged us to use PtTMeOPP as the sensing material for triiodide ion and to enhance its potential in a novel AuNPs/PtTMeOPP hybrid by the synergistic effects provided by the plasmonic gold nanoparticles. The spectrophotometric sensor is characterized by a detection limit of 1.5 × 10−9 M triiodide ion concentration and a remarkable confidence coefficient of 99.98%.
Author Fagadar-Cosma, Eugenia
Lascu, Anca
Shova, Sergiu
Balan, Adriana
Anghel, Diana
Croitor, Lilia
Stamatin, Serban
Zaltariov, Mirela-Fernanda
Birdeanu, Mihaela
AuthorAffiliation 4 3Nano-SAE Research Center, Faculty of Physics, University of Bucharest, Atomistilor Street, No 405, 077125 Măgurele, Romania; andronie@3nanosae.org (A.B.); serban@3nanosae.org (S.S.)
3 National Institute for Research and Development in Electrochemistry and Condensed Matter, P. Andronescu Street, No. 1, 300224 Timisoara, Romania; mihaione2002@yahoo.com
1 Institute of Chemistry Timisoara of Romanian Academy, Mihai Viteazu Ave. No. 24, 300223 Timisoara, Romania; croitor.lilia@gmail.com (L.C.); dianaracanel@yahoo.com (D.A.)
2 Laboratory of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda No. 41A, RO-700487 Iasi, Romania; shova@icmpp.ro (S.S.); zaltariov.mirela@icmpp.ro (M.-F.Z.)
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Keywords single crystal X-ray diffraction
UV–vis spectroscopy
AFM microscopy
Pt(II) metalloporphyrin
triiodide detection
Language English
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Snippet The development of UV⁻vis spectrophotometric methods based on metalloporphyrins for fast, highly sensitive and selective anion detection, which avoids several...
The development of UV–vis spectrophotometric methods based on metalloporphyrins for fast, highly sensitive and selective anion detection, which avoids several...
Iodine is concentrated by the human body predominantly in the thyroid gland [4] and in other important storage tissues (especially for individuals who had...
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SubjectTerms AFM microscopy
Anions
Ascorbic acid
Breast
Chlorine
Choroid plexus
Concentrates (ores)
Copper ores
Crystal structure
Crystallography
Dietary supplements
Electrodes
Environmental monitoring
Fetuses
Gastric mucosa
Gold
Hybrids
Hydroquinone
Iodine
Minerals
Molecular structure
Nanoparticles
Optical properties
Ores
Ovaries
Pharmacology
Physiological tests
Polymers
Pt(II) metalloporphyrin
Radiation detectors
Salivary gland
Salivary glands
single crystal X-ray diffraction
Single crystals
Solvents
Sweat gland
Thyroid
Thyroid gland
triiodide detection
UV–vis spectroscopy
X-ray crystallography
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Title X-ray Structure Elucidation of a Pt-Metalloporphyrin and Its Application for Obtaining Sensitive AuNPs-Plasmonic Hybrids Capable of Detecting Triiodide Anions
URI https://www.ncbi.nlm.nih.gov/pubmed/30736413
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https://pubmed.ncbi.nlm.nih.gov/PMC6387073
https://doaj.org/article/b3fbee7e74ed43c2a41b02cf0680a124
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