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Patel DA, Anand T, Sk AK, Sahoo SK. Fluorescence Sensing of pH and p-Nitrophenol Using an AIEE Active Pyridoxal Derived Schiff Base. J Fluoresc 2023; 33:1431-1441. [PMID: 36745310 DOI: 10.1007/s10895-023-03167-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 02/02/2023] [Indexed: 02/07/2023]
Abstract
An easy-to-prepare aggregation-induced emission enhancement (AIEE) active Schiff base NPY was synthesized by condensing vitamin B6 cofactor pyridoxal with 3-hydroxy-2-naphthoic hydrazide, and employed for the fluorescent sensing of pH and p-nitrophenol (p-NP). The AIEE phenomenon of NPY was investigated in mixed DMSO/H2O medium. The weakly yellow-fluorescent NPY (λem = 535 nm) in pure DMSO turned to a bright cyan-fluorescent NPY (λem = 490 nm) upon addition of poor solvent water. The DLS and SEM analyses supported the self-aggregation of NPY that restricted the intramolecular rotation and activated the excited state intramolecular proton transfer (ESIPT) process. The AIEE luminogen (AIEEgen) NPY containing 90% of water fraction (fwater) was employed for the fluorescent sensing of pH. AIEEgen NPY displays three distinct fluorescent pH windows: non-fluorescent below pH 3.0 and above pH 10.0, cyan fluorescent between pH 3.0 to 8.0, and yellow fluorescent between pH 8.0 to 10.0. AIEEgen NPY was also applied for the detection of nitroaromatics in HEPES buffer (10% DMSO, 10 mM, pH 7.0). The addition of p-NP selectively quenched the fluorescent intensity of AIEEgen NPY with an estimated detection limit of 1.73 µM. The analytical utility of AIEEgen NPY was examined by quantifying p-NP in different real water samples.
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Affiliation(s)
- Dhvani A Patel
- Department of Chemistry, Sardar Vallabhbhai National Institute Technology, 395007, Surat, Gujarat, India
| | - Thangaraj Anand
- Department of Chemistry, Sathyabama Institute of Science and Technology, 600119, Chennai, India
| | - Ashok Kumar Sk
- Department of Chemistry, School of Advance Sciences, Vellore Institute of Technology, 632014, Vellore, Tamil Nadu, India
| | - Suban K Sahoo
- Department of Chemistry, Sardar Vallabhbhai National Institute Technology, 395007, Surat, Gujarat, India.
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Hoelm M, Adamczyk J, Wzgarda-Raj K, Palusiak M. Effect of a Substituent on the Properties of Salicylaldehyde Hydrazone Derivatives. J Org Chem 2023; 88:2132-2139. [PMID: 36735741 PMCID: PMC9942203 DOI: 10.1021/acs.joc.2c02547] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The present study investigates the effect of the substitution of salicylaldehyde hydrazones at two selected positions, i.e., the para-position with regard to the proton-donating and proton-accepting centers forming the hydrogen bridge. A detailed analysis of structural data obtained by theoretical approaches and X-ray experiments, together with original resonance Hammett's constants, indicates that the strength of the intramolecular hydrogen bonding present in salicylaldehyde hydrazones can be selectively modulated by substitution of the parent molecular system with the chemical group of known π-electron-donating or -accepting properties. Our findings provide an insight into planning synthesis pathways for salicylaldehyde hydrazone species and predicting their result with regard to their H-bonding and related physical and chemical properties.
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Affiliation(s)
- Marta Hoelm
- Department
of Physical Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163/165, Lodz90-236, Poland
| | - Justyna Adamczyk
- Department
of Organic and Applied Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, Lodz91-403, Poland
| | - Kinga Wzgarda-Raj
- Department
of Physical Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163/165, Lodz90-236, Poland
| | - Marcin Palusiak
- Department
of Physical Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 163/165, Lodz90-236, Poland,
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Faraj I, Oubella A, Chkirate K, Al Mamari K, Hökelek T, Mague JT, El Ghayati L, Sebbar NK, Essassi EM. Crystal structure, Hirshfeld surface analysis and DFT calculations of ( E)-3-[1-(2-hy-droxy-phenyl-anilino)ethyl-idene]-6-methyl-pyran-2,4-dione. Acta Crystallogr E Crystallogr Commun 2022; 78:864-870. [PMID: 35974825 PMCID: PMC9361371 DOI: 10.1107/s2056989022007514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
The asymmetric unit of the title compound, C14H13NO4, contains three independent mol-ecules, which differ slightly in conformation. Each contains an intra-molecular N-H⋯O hydrogen bond. In the crystal, O-H⋯O hydrogen bonds form chains of mol-ecules, which are linked into corrugated sheets parallel to (03) plane by C-H⋯O hydrogen bonds together with π inter-actions between the carbonyl groups and the 2-hy-droxy-phenyl rings. The layers are linked by further C-H⋯O hydrogen bonds. The Hirshfeld surface analysis of the crystal structure indicates that the most important contributions for the crystal packing are from H⋯H (49.0%), H⋯O/O⋯H (28.3%) and H⋯C/C⋯H (10.9%) inter-actions. van der Waals inter-actions are the dominant inter-actions in the crystal packing. Moreover, density functional theory (DFT) optimized structures at the B3LYP/ 6-311 G(d,p) level are compared with the experimentally determined mol-ecular structure in the solid state. The HOMO-LUMO behavior was elucidated to determine the energy gap of 4.53 eV.
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Affiliation(s)
- Imane Faraj
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
| | - Ali Oubella
- Laboratory of Chemistry and Environment, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
- Laboratoire de Synthése Organique et Physico-Chimie Moléculaire, Département de Chimie, Faculté des Sciences, Semlalia, B.P 2390, Marrakech 40001, Morocco
| | - Karim Chkirate
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
| | - Khalil Al Mamari
- Department Of Chemistry – Faculty of Education – University of Hodiedah, Yemen
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Turkey
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Lhoussaine El Ghayati
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
| | - Nada Kheira Sebbar
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
- Laboratory of Chemistry and Environment, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - El Mokhtar Essassi
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
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Wang TY, Su YC, Ko BT, Hsu Y, Zeng YF, Hu CH, Datta A, Huang JH. Ring-Opening Polymerization of ε-Caprolactone and Styrene Oxide-CO 2 Coupling Reactions Catalyzed by Chelated Dehydroacetic Acid-Imine Aluminum Complexes. Molecules 2021; 27:164. [PMID: 35011395 PMCID: PMC8746973 DOI: 10.3390/molecules27010164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/24/2021] [Accepted: 12/25/2021] [Indexed: 12/04/2022] Open
Abstract
A series of chelated dehydroacetic acid-imine-based ligands L1H~L4H was synthesized by reacting dehydroacetic acid with 2-t-butylaniline, (S)-1-phenyl-ethylamine, 4-methoxylbenzylamine, and 2-(aminoethyl)pyridine, respectively, in moderate yields. Ligands L1H~L4H reacted with AlMe3 in toluene to afford corresponding compounds AlMe2L1 (1), AlMe2L2 (2), AlMe2L3 (3), and AlMe2L4 (4). All the ligands and aluminum compounds were characterized by IR spectra, 1H and 13C NMR spectroscopy. Additionally, the ligands L1H~L4H and corresponding aluminum derivatives 1, 3, and 4 were characterized by single-crystal X-ray diffractometry. The catalytic activities using these aluminum compounds as catalysts for the ε-caprolactone ring-opening polymerization (ROP) and styrene oxide-CO2 coupling reactions were studied. The results show that increases in the reaction temperature and selective solvent intensify the conversions of ε-caprolactone to polycaprolactone. Regarding the coupling reactions of styrene oxide and CO2, the conversion rate is over 90% for a period of 12 h at 90 °C. This strategy dispenses the origination of cyclic styrene carbonates, which is an appealing concern because of the transformation of CO2 into an inexpensive, renewable and easy excess carbon feedstock.
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Affiliation(s)
- Ting-Yen Wang
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
| | - Yu-Chia Su
- Department of Chemistry, National Chung-Hsing University, Taichung 402, Taiwan; (Y.-C.S.); (B.-T.K.)
| | - Bao-Tsan Ko
- Department of Chemistry, National Chung-Hsing University, Taichung 402, Taiwan; (Y.-C.S.); (B.-T.K.)
| | - Yu Hsu
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
| | - Yu-Fang Zeng
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
| | - Ching-Han Hu
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
| | - Amitabha Datta
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
| | - Jui-Hsien Huang
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
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Intramolecular Hydrogen Bond, Hirshfeld Analysis, AIM; DFT Studies of Pyran-2,4-dione Derivatives. CRYSTALS 2021. [DOI: 10.3390/cryst11080896] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Intra and intermolecular interactions found in the developed crystals of the synthesized py-ron-2,4-dione derivatives play crucial rules in the molecular conformations and crystal stabili-ties, respectively. In this regard, Hirshfeld calculations were used to quantitatively analyze the different intermolecular interactions in the crystal structures of some functionalized py-ran-2,4-dione derivatives. The X-ray structure of pyran-2,4-dione derivative namely (3E,3′E)-3,3′-((ethane-1,2-diylbis(azanediyl))bis(phenylmethanylylidene))bis(6-phenyl-2H-pyran-2,4(3H)-dione) was determined. It crystallized in the monoclinic crystal system and C2/c space group with unit cell parameters: a = 14.0869(4) Å, b = 20.9041(5) Å, c = 10.1444(2) Å and β = 99.687(2)°. Generally, the H…H, H…C, O…H and C…C contacts are the most important interactions in the molecular packing of the studied pyran-2,4-diones. The molecular structure of these compounds is stabilized by intramolecular O…H hydrogen bond. The nature and strength of the O…H hy-drogen bonds were analyzed using atoms in molecules calculations. In all compounds, the O…H hydrogen bond belongs to closed-shell interactions where the interaction energies are higher at the optimized geometry than the X-ray one due to the shortening in the A…H distance as a con-sequence of the geometry optimization. These compounds have polar characters with different charged regions which explored using molecular electrostatic potential map. Their natural charges, reactivity descriptors and NMR chemical shifts were computed, discussed and compared.
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