1
|
Luan J, Li Y, Yuan J, Wang Z, Shang X, Wang KP, Fang Y, Chen S, Hu ZQ. Simple cyclic chalcone dye with multiple optical functions: Piezochromism and lysosomes staining. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 318:124485. [PMID: 38788510 DOI: 10.1016/j.saa.2024.124485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/16/2024] [Accepted: 05/19/2024] [Indexed: 05/26/2024]
Abstract
Both artificially synthesized and naturally occurring cyclic chalcones have been widely studied for their excellent biological activities. However, research on its photophysical properties is still limited. In the present study, we designed and synthesized a small molecule fluorescent dye based on the ICT effect, using dimethylamino as the electron-donating group and carbonyl as the electron withdrawing group, and investigated its photophysical properties in depth. Although YB is a simple small molecule, it exhibits significant piezochromic properties. The fluorescence of YB can change from green to yellow through grinding. After solvent fumigation, the fluorescence reverts to green. Furthermore, YB was used successfully in the lysosomal targeting. This study expands the research on the photophysical properties of cyclic chalcone and give richness to application of cyclic chalcone compounds.
Collapse
Affiliation(s)
- Junyu Luan
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yahang Li
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Jianhao Yuan
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Zezhong Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xianzhao Shang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Kun-Peng Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Ying Fang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Shaojin Chen
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Zhi-Qiang Hu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| |
Collapse
|
2
|
Tang X, Zhang Y, Sun C. External electric field induced emission behavior for ESIPT-based 2-(benzo[d]thiazol-2-yl)-4-(pyren-1-yl)phenol towards near-infrared region. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 325:125045. [PMID: 39216142 DOI: 10.1016/j.saa.2024.125045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 08/20/2024] [Accepted: 08/24/2024] [Indexed: 09/04/2024]
Abstract
Organic light-emitting diodes (OLEDs) for low energy transfer and double emission, but the current methods for regulating ESIPT processes are mostly solvent and substituent effects. Here, utilizing the density theory functional (DFT) and time-dependent density functional theory (TD-DFT) methods, the ESIPT process controlled by an external electric field (EEF) is proposed, and the changes in photophysical properties of 2-(benzo[d]thiazol-2-yl)-4-(pyren-1-yl)phenol (PyHBT) are investigated. Structural parameter variations and IR vibrational spectra measure the prerequisite for the ESIPT process, namely, intramolecular hydrogen bond (IHB) strength, and the scanned potential energy curves (PECs) demonstrate that the ESIPT process of PyHBT is harder to execute as the positive EEF increases, and the opposite is true for the negative EEF. The absorption and fluorescence spectra show shifts under the distinct EEFs, and even the emission wavelength reaches the short-wave near-infrared (SW-NIR) region (780-1100 nm), such as 815.2 nm for a positive EEF of + 30 × 10-4 a.u. in the keto form. Additionally, the fluorescence intensity of PyHBT is strongly influenced by the positive EEF, especially in the enol form, and the investigation of the mechanism by hole-electron analysis demonstrates that under the positive EEF, the twisted intramolecular charge transfer (TICT) process is induced, which triggers the weakening of the fluorescence intensity. In summary, our work not only complements the theoretical approach to modulate the ESIPT process, but also reveals that the photophysical properties of materials affected by the external electric field are even expected to reach the NIR region.
Collapse
Affiliation(s)
- Xingzhu Tang
- College of Science, Northeast Forestry University, Harbin 150040, China
| | - Yajie Zhang
- College of Science, Northeast Forestry University, Harbin 150040, China
| | - Chaofan Sun
- College of Science, Northeast Forestry University, Harbin 150040, China.
| |
Collapse
|
3
|
Aracena A, Rezende MC, Pizarro S. Reproducing the Solvatochromism of Merocyanines by PCM Calculations. Molecules 2024; 29:4103. [PMID: 39274950 PMCID: PMC11397299 DOI: 10.3390/molecules29174103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2024] [Revised: 08/28/2024] [Accepted: 08/28/2024] [Indexed: 09/16/2024] Open
Abstract
Polarizable continuum methods (PCM) have been widely employed for simulating solvent effects, in spite of the fact that they either ignore specific interactions in solution or only partially reproduce non-specific contributions. Examples of three solvatochromic dyes with a negative, a positive and a reverse behavior illustrate the achievements and shortcomings of PCM calculations and the causes for their variable success. Even when qualitatively mimicking non-specific solvent effects, departures of calculated values from experimental data may be significant (20-30%). In addition, they can utterly fail to reproduce an inverted behavior that is caused by significant specific contributions by the solvent. As shown through a theoretical model that rationalizes and predicts the solvatochromism of phenolate merocyanines based on DFT (Density Functional Theory) descriptors in the gas phase, PCM shortcomings are to be held responsible for its eventual failure to reproduce experimental data in solution.
Collapse
Affiliation(s)
- Andrés Aracena
- Instituto de Ciencias Naturales, Facultad de Medicina Veterinaria y Agronomía, Universidad de Las Américas, Sede Santiago, Campus La Florida, Avenida Walker Martínez 1360, La Florida, Santiago 8240000, Chile
| | - Marcos Caroli Rezende
- Facultad de Química y Biología, Universidad de Santiago de Chile, Estación Central, Santiago 9160000, Chile
| | - Sebastián Pizarro
- Escuela de Ingeniería Química, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2162, Valparaíso 2340000, Chile
| |
Collapse
|
4
|
Martínez-Gómez F, Rezende MC, Rodríguez-Huenchún V. The Solvatomagnetism of E T(33) Betaine and of Its Phenolic Precursor. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2024. [PMID: 39192563 DOI: 10.1002/mrc.5478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 08/12/2024] [Accepted: 08/14/2024] [Indexed: 08/29/2024]
Abstract
The 1H and 13C NMR spectra of the N-(3,5-dichloro-4-hydroxyphenyl)- 2,4,6-triphenylpyridinium perchlorate and of its deprotonated betaine 4-(2,4,6-triphenylpyridinio)-2,6-dichlorophenolate (Wolfbeis's ET(33) dye) were recorded in various solvents and analyzed in search of solvent-dependent shifts that characterize their solvatomagnetism, which was compared with the well-known UV-vis spectral behavior of this important solvatochromic dye. Although the NMR spectra of ET(33) and its phenolic precursor in different solvents correlated only poorly with their UV-vis spectral responses, they provided valuable information on specific structural features and solute-solvent interactions that are not available from their UV-vis spectra.
Collapse
|
5
|
Gregory KP, Wanless EJ, Webber GB, Craig VSJ, Page AJ. A first-principles alternative to empirical solvent parameters. Phys Chem Chem Phys 2024; 26:20750-20759. [PMID: 38988220 DOI: 10.1039/d4cp01975j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
The use of solvents is ubiquitous in chemistry. Empirical parameters, such as the Kamlet-Taft parameters and Gutmann donor/acceptor numbers, have long been used to predict and quantify the effects solvents have on chemical phenomena. Collectively however, such parameters are unsatisfactory, since each describes ultimately the same non-covalent solute-solvent and solute-solute interactions in completely disparate ways. Here we hypothesise that empirical solvent parameters are essentially proxy measures of the electrostatic terms that dominate solvent-solute interactions. On the basis of this hypothesis, we develop a new fundamental descriptor of these interactions, , and show that it is a self-consistent, probe-free, first principles alternative to established empirical solvent parameters.
Collapse
Affiliation(s)
- Kasimir P Gregory
- Discipline of Chemistry, College of Engineering, Science & Environment, University of Newcastle, Callaghan 2308, Australia.
- Research School of Materials Physics, Research School of Physics, Australian National University, ACT 0200, Australia
- Division of Biomedical Science and Biochemistry, Research School of Biology, The Australian National University, Canberra, ACT 0200, Australia
| | - Erica J Wanless
- Discipline of Chemistry, College of Engineering, Science & Environment, University of Newcastle, Callaghan 2308, Australia.
| | - Grant B Webber
- Discipline of Chemical Engineering, College of Engineering, Science & Environment, University of Newcastle, Callaghan 2308, Australia
| | - Vincent S J Craig
- Research School of Materials Physics, Research School of Physics, Australian National University, ACT 0200, Australia
| | - Alister J Page
- Discipline of Chemistry, College of Engineering, Science & Environment, University of Newcastle, Callaghan 2308, Australia.
| |
Collapse
|
6
|
Helou de Oliveira PH, Boaler PJ, Hua G, West NM, Hembre RT, Penney JM, Al-Afyouni MH, Woollins JD, García-Domínguez A, Lloyd-Jones GC. Kinetics of sulfur-transfer from titanocene (poly)sulfides to sulfenyl chlorides: rapid metal-assisted concerted substitution. Chem Sci 2024; 15:11875-11883. [PMID: 39092120 PMCID: PMC11290412 DOI: 10.1039/d4sc02737j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Accepted: 06/16/2024] [Indexed: 08/04/2024] Open
Abstract
The kinetics of sulfur transfer from titanocene (poly)sulfides (RCp2TiS5, Cp2TiS4CMe2, Cp2Ti(SAr)2, Cp2TiCl(SAr)) to sulfenyl chlorides (S2Cl2, RSCl) have been investigated by a combination of stopped-flow UV-Vis/NMR reaction monitoring, titration assays, numerical kinetic modelling and KS-DFT calculations. The reactions are rapid, proceeding to completion over timescales of milliseconds to minutes, via a sequence of two S-S bond-forming steps (k 1, k 2). The archetypical polysulfides Cp2TiS5 (1a) and Cp2TiS4C(Me2) (2a) react with disulfur dichloride (S2Cl2) through rate-limiting intermolecular S-S bond formation (k 1) followed by a rapid intramolecular cyclization (k 2, with k 2 ≫ k 1 [RSCl]). The monofunctional sulfenyl chlorides (RSCl) studied herein react in two intermolecular S-S bond forming steps proceeding at similar rates (k 1 ≈ k 2). Reactions of titanocene bisthiophenolates, Cp2Ti(SAr)2 (5), with both mono- and di-functional sulfenyl chlorides result in rapid accumulation of the monothiophenolate, Cp2TiCl(SAr) (6) (k 1 > k 2). Across the range of reactants studied, the rates are relatively insensitive to changes in temperature and in the electronics of the sulfenyl chloride, moderately sensitive to the electronics of the titanocene (poly)sulfide (ρ (Ti-(SAr)) ≈ -2.0), and highly sensitive to the solvent polarity, with non-polar solvents (CS2, CCl4) leading to the slowest rates. The combined sensitivities are the result of a concerted, polarized and late transition state for the rate-limiting S-S bond forming step, accompanied by a large entropic penalty. Each substitution step {[Ti]-SR' + Cl-SR → [Ti]-Cl + RS-SR'} proceeds via titanium-assisted Cl-S cleavage to generate a transient pentacoordinate complex, Cl-[Cp2TiX]-S(R')-SR, which then undergoes rapid Ti-S dissociation.
Collapse
Affiliation(s)
| | - Patrick J Boaler
- School of Chemistry, University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| | - Guoxiong Hua
- School of Chemistry, University of St Andrews North Haugh, St Andrews KY16 9ST UK
| | - Nathan M West
- Eastman Chemical Company 200 S Wilcox Dr Kingsport Tennessee 37660 USA
| | - Robert T Hembre
- Eastman Chemical Company 200 S Wilcox Dr Kingsport Tennessee 37660 USA
| | | | | | | | | | - Guy C Lloyd-Jones
- School of Chemistry, University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| |
Collapse
|
7
|
Ormazábal-Toledo R, Rezende MC, Vidal M. The Simulation of Solvent Polarizabilities and Dipolarities with Polarizable Continuum Model. J Phys Chem B 2024; 128:7208-7218. [PMID: 38989920 DOI: 10.1021/acs.jpcb.4c01521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
The ability of polarizable continuum models (PCM) to simulate nonspecific solvent effects (dipolarity and polarizability) was evaluated by calculating the transition energies of 1,1,10,10-tetrabutyldecanonaene (ttbp9) and 2-N,N-dimethylamino-7-nitrofluorene (DMANF), basis of Catalán's polarizability (SP) and dipolarity (SdP) solvent scales, respectively. Time-dependent density-functional theory (TD-DFT) calculations were performed at different levels of theory, employing four basis sets in 10 different solvents, covering the full range of the normalized SP and SdP scales. Transition energies were calculated using linear response (LR) and corrected linear response (cLR2) schemes. Although these methods yielded variable mean absolute errors, the LR-PCM calculations reproduced medium polarizability and dipolarity trends. While calculated ttbp9 transition energies correlated with SP and Laurence's dispersion-induced (DI) scales, the DMANF transition energies correlated poorly with SdP or Laurence's ES dipolarity scales. This result agrees with the fact that DMANF solvatochromism is "contaminated" by solvent polarizability and HB acidity. The incorporation of SP or DI contributions led to much better (r2 > 0.95) correlations with the DMANF-calculated transitions. The results offer a clearer picture of the limitations of continuum models in simulating the behavior of solvatochromic dyes in solution by pointing out their poor performance when specific solvent effects, such as hydrogen-bond interactions, play a significant role in their solvatochromism.
Collapse
Affiliation(s)
- Rodrigo Ormazábal-Toledo
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Dr. Carlos Lorca Tobar 964, Independencia, Región Metropolitana, Casilla 233, Santiago 8380494, Chile
| | - Marcos Caroli Rezende
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago 9160000, Chile
| | - Matías Vidal
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago 9160000, Chile
| |
Collapse
|
8
|
An J, Lv KP, Chau CV, Lim JH, Parida R, Huang X, Debnath S, Xu Y, Zheng S, Sedgwick AC, Lee JY, Luo D, Liu Q, Sessler JL, Kim JS. Lutetium Texaphyrin-Celecoxib Conjugate as a Potential Immuno-Photodynamic Therapy Agent. J Am Chem Soc 2024; 146:19434-19448. [PMID: 38959476 DOI: 10.1021/jacs.4c05978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
Immuno-photodynamic therapy (IPDT) has emerged as a new modality for cancer treatment. Novel photosensitizers can help achieve the promise inherent in IPDT, namely, the complete eradication of a tumor without recurrence. We report here a small molecule photosensitizer conjugate, LuCXB. This IPDT agent integrates a celecoxib (cyclooxygenase-2 inhibitor) moiety with a near-infrared absorbing lutetium texaphyrin photocatalytic core. In aqueous environments, the two components of LuCXB are self-associated through inferred donor-acceptor interactions. A consequence of this intramolecular association is that upon photoirradiation with 730 nm light, LuCXB produces superoxide radicals (O2-•) via a type I photodynamic pathway; this provides a first line of defense against the tumor while promoting IPDT. For in vivo therapeutic applications, we prepared a CD133-targeting, aptamer-functionalized exosome-based nanophotosensitizer (Ex-apt@LuCXB) designed to target cancer stem cells. Ex-apt@LuCXB was found to display good photosensitivity, acceptable biocompatibility, and robust tumor targetability. Under conditions of photoirradiation, Ex-apt@LuCXB acts to amplify IPDT while exerting a significant antitumor effect in both liver and breast cancer mouse models. The observed therapeutic effects are attributed to a synergistic mechanism that combines antiangiogenesis and photoinduced cancer immunotherapy.
Collapse
Affiliation(s)
- Jusung An
- Department of Chemistry, Korea University, Seoul 02841, Korea
| | - Kong-Peng Lv
- Laboratory Medicine Center, Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital), Nanshan Avenue, Shenzhen 518000, Guangdong, China
- Department of Interventional Radiology, Shenzhen People's Hospital, (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong, China
| | - Calvin V Chau
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jong Hyeon Lim
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Rakesh Parida
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Xin Huang
- Laboratory Medicine Center, Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital), Nanshan Avenue, Shenzhen 518000, Guangdong, China
| | | | - Yunjie Xu
- Department of Chemistry, Korea University, Seoul 02841, Korea
| | - Siqi Zheng
- Department of Interventional Radiology, Shenzhen People's Hospital, (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong, China
| | - Adam C Sedgwick
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jin Yong Lee
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Dixian Luo
- Laboratory Medicine Center, Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital), Nanshan Avenue, Shenzhen 518000, Guangdong, China
| | - Quan Liu
- Laboratory Medicine Center, Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital), Nanshan Avenue, Shenzhen 518000, Guangdong, China
| | - Jonathan L Sessler
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jong Seung Kim
- Department of Chemistry, Korea University, Seoul 02841, Korea
| |
Collapse
|
9
|
Laurence C, Legros J, Vuluga D. A Collection of Dispersion Induction DI, Electrostatic ES, and Hydrogen Bonding α 1 and β 1 Parameters for 380 Solvents and What They Say on Solvent Effects on Rates, Equilibria, and Spectra. J Org Chem 2024; 89:9521-9542. [PMID: 38965936 DOI: 10.1021/acs.joc.4c00858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
The solvent parameters DI, ES, α1, and β1 are intended for the description of solute-solvent intermolecular forces, i.e., dispersion-induction, electrostatic, hydrogen-bond donation, and hydrogen-bond acceptance, respectively. An up-to-date collection of these parameters is presented for 380 solvents including green solvents, ionic liquids, and deep eutectic solvents. Their determination for additional solvents requires three commercial indicators, betaine dye B(30), 4-F-phenol, and 4-F-anisole (as well as the refractive index). The chemical significance of these parameters is outlined. Their use in the linear solvation energy relationship P = P° + di DI + e ES + a α1 + b β1 for 62 physicochemical properties P (reaction rates, equilibrium constants, and IR, UV, and NMR spectra) yields determination coefficients generally greater than 0.90 and regression coefficients whose sign and relative magnitude provide consistent information on the intermolecular forces acting on these properties.
Collapse
Affiliation(s)
- Christian Laurence
- Université de Nantes, Laboratoire CEISAM, UMR 6230 CNRS, 44322 Nantes, France
| | - Julien Legros
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA, F-76000 Rouen, France
| | - Daniela Vuluga
- INSA Rouen Normandie, Univ Rouen Normandie, CNRS, PBS 76000 Rouen, France
| |
Collapse
|
10
|
Maniyar AK, F NY, Al-Asbahi BA, Murugendrappa MV. Investigation on the Influence of Solvents Environment on the Optoelectronic Properties of the Fluorescent Probe 1,3,4-Oxadiazole Analogues: A Combined Theoretical and Experimental Study. J Fluoresc 2024:10.1007/s10895-024-03822-6. [PMID: 38958907 DOI: 10.1007/s10895-024-03822-6] [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: 04/29/2024] [Accepted: 06/24/2024] [Indexed: 07/04/2024]
Abstract
This study investigates the photophysical properties of a nitrobenzene-substituted 1,3,4-oxadiazole derivative (OX-NO) using both theoretical and experimental methods. The impact of the solvent on OX-NO absorption and fluorescence spectra, as well as its fluorescence quantum yield, was initially studied. A noticeable bathochromic shift in the Stokes shift indicated a π→ π* transition within the molecules. Solute-solvent interactions were analysed using Catalan parameters, distinguishing between specific and nonspecific interactions. Excited state dipole moments were derived from Lippert's, Bakshiev's, and Chamma Viallet's equations, showing increased polarity in the excited state compared to the ground state. Ground state dipole moments were determined via solvatochromic shift methods and ab initio techniques. Additionally, detailed analyses of bond length, angles, dihedral angles, Mulliken charge distribution, and HOMO-LUMO energy gap were conducted using the DFT-B3LYP-6-311G basis set in Gaussian-09 W. The energy band gap values obtained from theoretical calculations and experimental methods (cyclic voltammetry and UV-Visible spectroscopy) exhibited excellent agreement. Reactive sites such as electrophilic and nucleophilic regions were identified through total electron density, electrostatic maps, molecular electrostatic potential, and 3D plots using DFT computational analysis. Global descriptors were employed to characterize the compounds' chemical reactivity comprehensively. The observed photophysical attributes underscore the potential of these fluorophores in various applications like organic light-emitting diodes, solar cells, and chemosensors. This study contributes crucial insights into the optoelectronic properties of nitrobenzene-substituted 1,3,4-oxadiazole derivatives, paving the way for their future integration in advanced technological domains.
Collapse
Affiliation(s)
- A K Maniyar
- Department of Physics, Mangalore University, Mangalagangotri, 574199, India
- Department of physics, Government First Grade College, Hubballi, 580032, India
| | - Nadaf Y F
- PG Department of Physics, Materials Research Centre, Maharani Science College for Women, Maharani Cluster University, Bengaluru, 560001, India
| | - Bandar Ali Al-Asbahi
- Department of Physics & Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - M V Murugendrappa
- Center of Excellence in Advanced Materials Research, BMS College of Engineering, Bangalore, 560019, India.
| |
Collapse
|
11
|
Ruto A, Seki H, Osaki K, Kaneno D, Hadano S, Watanabe S, Niko Y. Synthesis of 1,3-Dibromopyrene as Precursor of 1-, 3-, 6-, and 8-Substituted Long-Axially Symmetric Pyrene Derivatives. Chemistry 2024; 30:e202401152. [PMID: 38683696 DOI: 10.1002/chem.202401152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/29/2024] [Accepted: 04/29/2024] [Indexed: 05/02/2024]
Abstract
Pyrene derivatives bearing substituents at positions 1, 3, 6, and 8 find numerous applications, as exemplified by their use in lasers, sensors, and bioimaging probes. However, these derivatives typically have point-symmetric or short-axially symmetric structures, whereas long-axially symmetric derivatives remain underexplored because of the difficulty in obtaining their precursor, 1,3-dibromopyrene. To address this problem, we herein synthesized 1,3-dibromopyrene from 1-methoxypyrene in an overall yield (71 % over four steps) considerably exceeding those of existing methods. 1,3-Dibromopyrene was converted into 13OPA, a long-axially symmetric pyrene dye with electron-donor (alkoxy) groups at positions 1 and 3 and electron-acceptor (formyl) groups at positions 6 and 8. 13OPA exhibited photophysical properties distinct from those of its point-symmetric and short-axially symmetric isomers, featuring a broad and strongly redshifted absorption, strong fluorescence with reduced sensitivity to protic solvents, and small dipole moment change upon photoexcitation. The derivatization of 13OPA into a Schiff base and its functionalization via Lewis acid-base pairing were also demonstrated. Thus, our work expands the design scope of pyrene-based molecules, particularly those used as emitters.
Collapse
Affiliation(s)
- Asuka Ruto
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1, Akebono-cho, Kochi-shi, Kochi, 780-8520, Japan
- TOSA Innovative Human Development Programs, Kochi University, 2-5-1, Akebono-cho, Kochi-shi, Kochi, 780-8520, Japan
| | - Hitomi Seki
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1, Akebono-cho, Kochi-shi, Kochi, 780-8520, Japan
| | - Katsuki Osaki
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1, Akebono-cho, Kochi-shi, Kochi, 780-8520, Japan
| | - Daisuke Kaneno
- Department of Applied Science, Graduate School of Integrated Arts and Sciences, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan
| | - Shingo Hadano
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1, Akebono-cho, Kochi-shi, Kochi, 780-8520, Japan
| | - Shigeru Watanabe
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1, Akebono-cho, Kochi-shi, Kochi, 780-8520, Japan
| | - Yosuke Niko
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1, Akebono-cho, Kochi-shi, Kochi, 780-8520, Japan
- TOSA Innovative Human Development Programs, Kochi University, 2-5-1, Akebono-cho, Kochi-shi, Kochi, 780-8520, Japan
- Center for Photodynamic Medicine, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan
| |
Collapse
|
12
|
Parra-Muñoz N, López-Monsalves V, Espinoza-González R, Aravena D, Pizarro N, Soler M. Synthesis and Optical Properties of a Novel Hybrid Nanosystem Based on Covalently Modified nSiO 2 Nanoparticles with a Curcuminoid Molecule. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1022. [PMID: 38921898 PMCID: PMC11207103 DOI: 10.3390/nano14121022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 05/25/2024] [Accepted: 05/31/2024] [Indexed: 06/27/2024]
Abstract
A new curcuminoid molecule (3) has been designed and synthesized, containing a central -(CH2)2-COOH chain at the α carbon of the keto-enol moiety in the structure. The carboxylic acid group is added to react with exposed amino groups on silica oxide nanoparticles (nSiO2), forming an amide bond to attach the curcuminoid moiety to the nSiO2 covalently. The Kaiser test quantifies the functionalization degree, yielding 222 μmol of curcuminoid per gram of nanoparticles. The synthesized hybrid nanosystem, nSiO2-NHCO-CCM, displays significant emission properties, with a maximum emission at 538 nm in dichloromethane, similar to curcuminoid 1 (without the central chain), which emits at 565 nm in the same solvent. Solvent-induced spectral effects on the absorption and emission bands of the new hybrid nanosystem are confirmed, similar to those observed for the free curcuminoid (1). The new nanosystem is evaluated in the presence of kerosene in water, showing an emission band at 525 nm as a detection response. The ability of nSiO2-NHCO-CCM to change its fluorescence when interacting with kerosene in water is notable, as it overcomes the limitation caused by the insolubility of free curcuminoid 1 in water, allowing for the exploitation of its properties when connected to the water-stable nanosystem for future detection studies.
Collapse
Affiliation(s)
- Nicole Parra-Muñoz
- Department of Chemical Engineering, Biotechnology and Materials, Faculty of Physical and Mathematical Sciences, Universidad de Chile, Santiago 8370456, Chile (R.E.-G.)
- Centro de Materiales para la Transición y Sostenibilidad Energética, Comisión Chilena de Energía Nuclear, Ruta 68, km 20, Santiago 7600713, Chile
| | - Valentina López-Monsalves
- Department of Chemical Engineering, Biotechnology and Materials, Faculty of Physical and Mathematical Sciences, Universidad de Chile, Santiago 8370456, Chile (R.E.-G.)
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile
| | - Rodrigo Espinoza-González
- Department of Chemical Engineering, Biotechnology and Materials, Faculty of Physical and Mathematical Sciences, Universidad de Chile, Santiago 8370456, Chile (R.E.-G.)
| | - Daniel Aravena
- Departamento de Química de los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Casilla 40, Correo 33, Santiago 9170002, Chile;
| | - Nancy Pizarro
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andrés Bello, Viña del Mar 2520000, Chile;
| | - Monica Soler
- Department of Chemical Engineering, Biotechnology and Materials, Faculty of Physical and Mathematical Sciences, Universidad de Chile, Santiago 8370456, Chile (R.E.-G.)
| |
Collapse
|
13
|
Pyszka I, Krawczyk P, Jędrzejewska B. The Influence of the Alkylamino Group on the Solvatochromic Behavior of 5-(4-substituted-arylidene)-1,3-dimethylpyrimidine-2,4,6-triones: Synthesis, Spectroscopic and Computational Studies. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2447. [PMID: 38793513 PMCID: PMC11123250 DOI: 10.3390/ma17102447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 05/12/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024]
Abstract
Advances in electronics and medical diagnostics have made organic dyes extremely popular as key functional materials. From a practical viewpoint, it is necessary to assess the spectroscopic and physicochemical properties of newly designed dyes. In this context, the condensation of 1,3-dimethylbarbituric acid with electron-rich alkylaminobenzaldehyde derivatives has been described, resulting in a series of merocyanine-type dyes. These dyes exhibit intense blue-light absorption but weak fluorescence. An electron-donating alkylamino group at position C4 is responsible for the solvatochromic behavior of the dyes since the lone electron pair of the nitrogen atom is variably delocalized toward the barbituric ring, which exhibits electron-withdrawing properties. This was elucidated, taking into account the different geometry of the amino group. The intramolecular charge transfer in the molecules is responsible for the relatively high redshift in absorption and fluorescence spectra. Additionally, an increase in solvent polarity moves the absorption and fluorescence to lower energy regions. The observed solvatochromism is discussed in terms of the four-parameter Catalán solvent polarity scale. The differences in the behavior of the dyes were quantified with the aid of time-dependent density functional theory calculations. The obtained results made it possible to find regularities linking the basic spectroscopic properties of the compounds with their chemical structure. This is important in the targeted search for new, practically important dyes.
Collapse
Affiliation(s)
- Ilona Pyszka
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Seminaryjna 3, 85-326 Bydgoszcz, Poland;
| | - Przemysław Krawczyk
- Faculty of Pharmacy, Collegium Medicum, Nicolaus Copernicus University, Kurpińskiego 5, 85-950 Bydgoszcz, Poland;
| | - Beata Jędrzejewska
- Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Seminaryjna 3, 85-326 Bydgoszcz, Poland;
| |
Collapse
|
14
|
Würfel H, Pfeifer A, Heinze T. Efficient heterogeneous synthesis of nucleophilic carboxymethyl hydrazides of polysaccharides. Biopolymers 2024; 115:e23574. [PMID: 38469937 DOI: 10.1002/bip.23574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/13/2024]
Abstract
Nucleophilic moieties in polysaccharides (PS) with distinct higher reactivity compared with the hydroxy group are interesting for sustainable applications in chemistry, medicine, and pharmacy. An efficient heterogeneous method for the formation of such nucleophilic PS is described. Employing alcohols as slurry medium, protonated carboxymethyl (CM) PS and hydrazine hydrate are allowed to react at elevated temperatures. The CM derivatives of starch and pullulan can be transformed almost quantitatively to the corresponding hydrazides. The reaction is less efficient for CM dextrans and CM xylans. As slurry media, 2-propanol and ethanol were probed, and the results are compared with a homogeneous procedure performed in water. Overall, the heterogeneous procedure is superior compared with the homogeneous route. 2-Propanol is the best slurry medium investigated yielding PS hydrazides with the highest nitrogen content.
Collapse
Affiliation(s)
- Hendryk Würfel
- Center of Excellence for Polysaccharide Research, Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Jena, Germany
| | - Annett Pfeifer
- Center of Excellence for Polysaccharide Research, Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Jena, Germany
| | - Thomas Heinze
- Center of Excellence for Polysaccharide Research, Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Jena, Germany
| |
Collapse
|
15
|
Gaile A, Belyakov S, Dūrena R, Griščenko Ņ, Zukuls A, Batenko N. Studies of the Functionalized α-Hydroxy- p-Quinone Imine Derivatives Stabilized by Intramolecular Hydrogen Bond. Molecules 2024; 29:1613. [PMID: 38611892 PMCID: PMC11013408 DOI: 10.3390/molecules29071613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 03/25/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
In this work, reactions between 6,7-dichloropyrido[1,2-a]benzimidazole-8,9-diones with different benzohydrazides were studied. Nucleophilic substitution at C(6) was followed by isomerization and led to α-hydroxy-p-quinone imine derivatives. Synthesized compounds represent a combination of several structural motifs: a benzimidazole core fused with α-hydroxy-p-quinone imine, which contains a benzamide fragment. X-ray crystallography analysis revealed the formation of dimers linked through OH···O interactions and stabilization of the imine form by strong intramolecular NH···N hydrogen bonds. The protonation/deprotonation processes were investigated in a solution using UV-Vis spectroscopy and a 1H NMR titration experiment. Additionally, the electrochemical properties of 6,7-dichloropyrido[1,2-a]benzimidazole-8,9-dione and its α-hydroxy-p-quinone imine derivative as cathode materials were investigated in acidic and neutral environments using cyclic voltammetry measurements. Cathode material based on 6,7-dichloropyrido[1,2-a]benzimidazole-8,9-dione could act as a potentially effective active electrode in aqueous electrolyte batteries; however, further optimization is required.
Collapse
Affiliation(s)
- Anastasija Gaile
- Institute of Chemistry and Chemical Technology, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia;
| | - Sergey Belyakov
- Latvian Institute of Organic Chemistry, Aizkraukles Str. 21, LV-1006 Riga, Latvia;
| | - Ramona Dūrena
- Institute of Materials and Surface Engineering, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia; (R.D.); (Ņ.G.); (A.Z.)
| | - Ņikita Griščenko
- Institute of Materials and Surface Engineering, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia; (R.D.); (Ņ.G.); (A.Z.)
| | - Anzelms Zukuls
- Institute of Materials and Surface Engineering, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia; (R.D.); (Ņ.G.); (A.Z.)
| | - Nelli Batenko
- Institute of Chemistry and Chemical Technology, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia;
| |
Collapse
|
16
|
Suma M, Sushma GN, Bellad SS, Murthy VNN, AlAsbahi BA, Nadaf YF. Synthesis, Spectral Characterization and Photoluminescence of 3-chloro-6-methoxy-2-(methylsulfanyl)quinoxaline in Different Solvents: An Experimental and Theoretical Investigation Using DFT. J Fluoresc 2024:10.1007/s10895-024-03676-y. [PMID: 38558125 DOI: 10.1007/s10895-024-03676-y] [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: 01/18/2024] [Accepted: 03/14/2024] [Indexed: 04/04/2024]
Abstract
In the present work, we synthesized 3-chloro-6-methoxy-2-(methyl sulfanyl) quinoxaline (3MSQ) using a microwave-assisted synthesis method. The physicochemical structural analysis of the synthesized compound utilizing 1H-NMR, 13C-NMR, and FT-IR spectroscopy techniques. The photophysical properties of 3MSQ was examined through absorption and fluorescence spectroscopy. Spectroscopic analyses revealed a bathochromic shift in both absorption and fluorescence spectra, attributed to the π → π* transition. Ground and excited state dipole moments was experimentally determined using the solvatochromic shift method, employing various correlations such as Lippert's, Bakhshiev's, Kawski-Chamma-Viallet's equations, and solvent polarity parameters. Our findings indicate that the excited state dipole moments exceed those of the ground state, suggesting increased polarity in the excited state. Further, the while detailed bond length, bond angles, dihedral angles, Mulliken charge distribution, ground state dipole moments and HOMO-LUMO energy gap estimated through ab initio computations using Gaussian-09W. The value of energy band gap obtained from both the methods are in good agreement. Furthermore, employing DFT computational analysis, we identified reactive centers such as electrophilic and nucleophilic sites using molecular electrostatic potential (MESP) 3D plots. Additionally, CIE chromaticity analysis was performed to understand the photoluminescent properties of 3MSQ. The insights derived from these analyses contribute to a better understanding of the molecule's electronic structure, photophysical properties, and solute-solvent interactions, thus providing valuable information regarding its behaviour and characteristics under diverse conditions. These results contribute to a comprehensive understanding of the molecular structure and properties of 3-chloro-6-methoxy-2-(methyl sulfanyl) quinoxaline (3MSQ).
Collapse
Affiliation(s)
- M Suma
- PG Department of Physics, Materials Research Centre, Maharani Science College for Women, Maharani Cluster University, 560001, Bengaluru, India
| | - G N Sushma
- PG Department of Physics, Materials Research Centre, Maharani Science College for Women, Maharani Cluster University, 560001, Bengaluru, India
| | - S S Bellad
- PG Department of Physics, Materials Research Centre, Maharani Science College for Women, Maharani Cluster University, 560001, Bengaluru, India
| | - V N Narasimha Murthy
- PG Department of Physics, Materials Research Centre, Maharani Science College for Women, Maharani Cluster University, 560001, Bengaluru, India
| | - Bandar Ali AlAsbahi
- Department of Physics & Astronomy, College of Science, King Saud University, P.O. Box 2455, 11451, Riyadh, Saudi Arabia
| | - Y F Nadaf
- PG Department of Physics, Materials Research Centre, Maharani Science College for Women, Maharani Cluster University, 560001, Bengaluru, India.
| |
Collapse
|
17
|
Patrick SC, Beer PD, Davis JJ. Solvent effects in anion recognition. Nat Rev Chem 2024; 8:256-276. [PMID: 38448686 DOI: 10.1038/s41570-024-00584-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/25/2024] [Indexed: 03/08/2024]
Abstract
Anion recognition is pertinent to a range of environmental, medicinal and industrial applications. Recent progress in the field has relied on advances in synthetic host design to afford a broad range of potent recognition motifs and novel supramolecular structures capable of effective binding both in solution and at derived molecular films. However, performance in aqueous media remains a critical challenge. Understanding the effects of bulk and local solvent on anion recognition by host scaffolds is imperative if effective and selective detection in real-world media is to be viable. This Review seeks to provide a framework within which these effects can be considered both experimentally and theoretically. We highlight proposed models for solvation effects on anion binding and discuss approaches to retain strong anion binding in highly competitive (polar) solvents. The synthetic design principles for exploiting the aforementioned solvent effects are explored.
Collapse
Affiliation(s)
| | - Paul D Beer
- Department of Chemistry, University of Oxford, Oxford, UK
| | - Jason J Davis
- Department of Chemistry, University of Oxford, Oxford, UK.
| |
Collapse
|
18
|
Mahmoud H, Ismail MA, Medien HAA, Abdel-Samad HS, Abdel-Shafi AA. Unique structural effect on the fluorosolvatochromism and dual fluorescence emission of D-π-A + cationic chromophores with furyl bridge. An approach to white light emitters. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123771. [PMID: 38150988 DOI: 10.1016/j.saa.2023.123771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/30/2023] [Accepted: 12/13/2023] [Indexed: 12/29/2023]
Abstract
Photophysical behavior of two D - π - A+ cationic compounds with the same furyl bridge and nicotinamidine group as an electron acceptor moiety and two electron donating groups, namely methoxy (I) and N,N-dimethylamino (II) groups was examined using steady-state and time-resolved techniques in variety of solvents. Time-dependent density functional theory (TDDFT) calculations were performed in some representative solvents and compared with the experimental results. Steady state and time-resolved studies in different solvents reveal that fluorescence emission of (I) is ascribed to an emission from an excited state (ICT) with higher dipole moment than the ground state while the emission of (II) is a dual emission from a state with high charge transfer nature (ICT) in addition to the locally excited state (LE). The fluorescence emission spectra of (II) were found to depend on the excitation wavelength and an increase in the excitation wavelength led to the formation of a longer wavelength emission band with lower quantum yield. It has also been found that the fluorescence excitation spectra were dependent on the emission wavelength. The effect of solvent on the nature of dual emission was examined. Correlation of the photophysical properties of the excited states of (I) and (II) with the solvent polarity, ε, reveals the charge transfer nature of (I) and the long wavelength emission band of (II), while their correlation with the solvent polarity parameter (ETN) shows two different trends when the solvents are divided to aprotic and protic solvents. For precise investigation of the impact of each solvent parameter on each photophysical property, Catalán's and Laurence's four parametric linear solvation energy relationships were studied. We have found that the non-specific interactions of the solvent are primarily responsible for controlling the photophysical properties, as demonstrated by Catalán's and Laurence's treatments. DFT and TDDFT calculations were used to anticipate the dipole moments in the ground and excited states and geometry of both states.
Collapse
Affiliation(s)
- Hoda Mahmoud
- Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, 11566, Egypt
| | - Mohamed A Ismail
- Department of Chemistry, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt
| | - Hesham A A Medien
- Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, 11566, Egypt
| | - Hesham S Abdel-Samad
- Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, 11566, Egypt
| | - Ayman A Abdel-Shafi
- Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, 11566, Egypt.
| |
Collapse
|
19
|
Mahato KD, Kumar U. Optimized Machine learning techniques Enable prediction of organic dyes photophysical Properties: Absorption Wavelengths, emission Wavelengths, and quantum yields. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123768. [PMID: 38134661 DOI: 10.1016/j.saa.2023.123768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/05/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
Applications of organic dyes, ranging from basic research to industry, are functions of their photophysical properties. Two important aspects- (1) knowledge of the photophysical properties of existing dyes long before real applications and (2) discovery of new organic dyes with desired photophysical properties for either upgradation of existing or development of new applications-are needed to be addressed. These two cases are coupled together with the common goal of estimating photophysical properties with high accuracy at the minimum cost of time and money long before the hard-core laboratory experiment. For this purpose, machine learning-based techniques are the most suitable approach. In this study, we used optimized machine-learning techniques to assess a dataset of 3066 organic dyes, which were evaluated using three evaluation parameters: Root Mean Squared Error (RMSE), Mean Absolute Error (MAE), and the coefficient of determination (R2). The Quadratic Support Vector Machine (QSVM) was the best predictive model for RMSE-16.614, MAE-10.837, and R2-0.961 for absorption wavelengths and RMSE-23.636, MAE-16.278, and R2-0.929 for emission wavelengths. These R2 values are 0.7% and 0.4% greater than the Gradient Boost Regression Tree (GBRT) model's recently reported values of 0.954 and 0.925 for absorption and emission wavelengths, respectively. Furthermore, we estimated the quantum yield and found that the Coarse Gaussian Support Vector Machine (CGSVM) outperformed all examined models. For more validation of these models, we compared the predicted results with the experimental results of selective dyes. The proposed automated approach can be used for predicting photophysical properties without much computer programming knowledge.
Collapse
Affiliation(s)
- Kapil Dev Mahato
- Department of Physics, National Institute of Technology Jamshedpur, Jharkhand 831014, India.
| | - Uday Kumar
- Department of Physics, National Institute of Technology Jamshedpur, Jharkhand 831014, India
| |
Collapse
|
20
|
Lee JJ, Kang J, Kim C. A low-cost TICT-based staining agent for identification of microplastics: Theoretical studies and simple, cost-effective smartphone-based fluorescence microscope application. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133168. [PMID: 38104521 DOI: 10.1016/j.jhazmat.2023.133168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 11/30/2023] [Accepted: 11/30/2023] [Indexed: 12/19/2023]
Abstract
A novel staining agent, (5-(4-(diethylamino)benzylidene)- 1,3-dimethylpyrimidine-2,4,6(1 H,3 H,5 H)-trione) (DDB) was developed for the effective detection of environmentally harmful microplastics. DDB has competitive cost advantages, namely its facile synthesis and high yield, over Nile Red (NR), which is commonly used for microplastic staining. The unique photophysical properties of DDB, including emissive twisted intramolecular charge transfer (TICT) and aggregation-induced emission (AIE), were corroborated via spectroscopic investigations and density functional theory (DFT) calculations. Notably, DDB demonstrated superior selectivity for staining microplastics (polyethylene (PE), polyurethane (PU), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), and polyethylene terephthalate (PET)) over non-plastic materials in water. Furthermore, modulation of the solvent environment during the staining process yielded distinct fluorescence in both the green and red channels for specific types of plastic with the interplay between locally excited (LE) and TICT states. Treatment with 5% ethanol results in the selective staining of PE and PET with the emission of red fluorescence, whereas treatment with 30% ethanol facilitates the selective staining of PU, PVC, and PET with the emission of green fluorescence. Additionally, DDB could selectively stain microplastics in spiked soil and river water samples. Furthermore, a smartphone-based fluorescence microscope was developed at a cost below $100, validating the effective detection of microplastics stained with the newly synthesized DDB. The outcomes of this research demonstrate the potential of DDB as an economical and efficient agent for selective microplastic detection.
Collapse
Affiliation(s)
- Jae Jun Lee
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 01811, South Korea
| | - Jiyun Kang
- Department of Environmental Engineering, Seoul National University of Science and Technology, Seoul 01811, South Korea
| | - Cheal Kim
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 01811, South Korea.
| |
Collapse
|
21
|
Melinao F, Vidal M, Aliaga C, Domínguez M. Inverting the Solvatochromism of Pyridinium- N-phenolate Dyes by the Addition of a Second Pyridinium Unit. J Org Chem 2024; 89:1534-1542. [PMID: 38224496 DOI: 10.1021/acs.joc.3c02158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Three bipyridinium phenolates were synthesized, and their spectral behavior was recorded at various solvent polarities and compared to a classic pyridinium phenolate dye possessing only one pyridinium acceptor ring in its structure. The addition of a second pyridinium unit to the classic solvatochromic core results in an unexpected change in the spectral behavior from negative solvatochromism (displacement of the absorption band to shorter wavelengths) to inverted solvatochromism, characterized by the transition from negative to positive solvatochromism (displacement of the absorption band to longer wavelengths) at moderate solvent polarities.
Collapse
Affiliation(s)
- Fabián Melinao
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago 9170022, Chile
| | - Matías Vidal
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago 9170022, Chile
| | - Carolina Aliaga
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago 9170022, Chile
- Centro para el Desarrollo de la Nanociencia y la Nanotecnología (CEDENNA), Av. Bernardo O'Higgins 3363, Santiago 9170022, Chile
| | - Moisés Domínguez
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago 9170022, Chile
| |
Collapse
|
22
|
An J, Kim K, Lim HJ, Kim HY, Shin J, Park I, Cho I, Kim HY, Kim S, McLean C, Choi KY, Kim Y, Lee KH, Kim JS. Early onset diagnosis in Alzheimer's disease patients via amyloid-β oligomers-sensing probe in cerebrospinal fluid. Nat Commun 2024; 15:1004. [PMID: 38307843 PMCID: PMC10837422 DOI: 10.1038/s41467-024-44818-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 01/05/2024] [Indexed: 02/04/2024] Open
Abstract
Amyloid-β (Aβ) oligomers are implicated in the onset of Alzheimer's disease (AD). Herein, quinoline-derived half-curcumin-dioxaborine (Q-OB) fluorescent probe was designed for detecting Aβ oligomers by finely tailoring the hydrophobicity of the biannulate donor motifs in donor-π-acceptor structure. Q-OB shows a great sensing potency in dynamically monitoring oligomerization of Aβ during amyloid fibrillogenesis in vitro. In addition, we applied this strategy to fluorometrically analyze Aβ self-assembly kinetics in the cerebrospinal fluids (CSF) of AD patients. The fluorescence intensity of Q-OB in AD patients' CSF revealed a marked change of log (I/I0) value of 0.34 ± 0.13 (cognitive normal), 0.15 ± 0.12 (mild cognitive impairment), and 0.14 ± 0.10 (AD dementia), guiding to distinguish a state of AD continuum for early diagnosis of AD. These studies demonstrate the potential of our approach can expand the currently available preclinical diagnostic platform for the early stages of AD, aiding in the disruption of pathological progression and the development of appropriate treatment strategies.
Collapse
Affiliation(s)
- Jusung An
- Department of Chemistry, Korea University, Seoul, 02841, Korea
| | - Kyeonghwan Kim
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon, 21983, Korea
- Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon, 21983, Korea
| | - Ho Jae Lim
- Department of Biomedical Science, Chosun University, Gwangju, 61452, Korea
| | - Hye Yun Kim
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon, 21983, Korea
- Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon, 21983, Korea
| | - Jinwoo Shin
- Department of Chemistry, Korea University, Seoul, 02841, Korea
| | - InWook Park
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon, 21983, Korea
- Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon, 21983, Korea
| | - Illhwan Cho
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon, 21983, Korea
- Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon, 21983, Korea
| | - Hyeong Yun Kim
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon, 21983, Korea
| | - Sunghoon Kim
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon, 21983, Korea
- Medicinal Bioconvergence Research Center, Institute for Artificial Intelligence and Biomedical Research, Gangnam Severance Hospital, Yonsei University, Incheon, 21983, Korea
- College of Pharmacy, College of Medicine, Interdisciplinary Biomedical Center, Gangnam Severance Hospital, Yonsei University, Incheon, 21983, Korea
| | - Catriona McLean
- Department of Pathology, The Alfred Hospital, Melbourne, 3004, Australia
| | - Kyu Yeong Choi
- Gwangju Alzheimer's & Related Dementia Cohort Research Center, Chosun University, Gwangju, 61452, Korea
| | - YoungSoo Kim
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon, 21983, Korea.
- Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon, 21983, Korea.
| | - Kun Ho Lee
- Department of Biomedical Science, Chosun University, Gwangju, 61452, Korea.
- Gwangju Alzheimer's & Related Dementia Cohort Research Center, Chosun University, Gwangju, 61452, Korea.
- Department of Neural Development and Disease, Korea Brain Research Institute, Daegu, 41062, Korea.
| | - Jong Seung Kim
- Department of Chemistry, Korea University, Seoul, 02841, Korea.
- TheranoChem Incorporation, Seongbuk-gu, Seoul, 02856, Korea.
| |
Collapse
|
23
|
Kulinich AV, Ishchenko AA. Design and Photonics of Merocyanine Dyes. CHEM REC 2024; 24:e202300262. [PMID: 37850545 DOI: 10.1002/tcr.202300262] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/21/2023] [Indexed: 10/19/2023]
Abstract
Merocyanines, thanks to their easily adjustable electronic structure, appear to be the most versatile and promising functional dyes. Their D-π-A framework offers ample opportunities for custom design through variations in both donor/acceptor end-groups and the π-conjugated polymethine chain, and leads to a broad range of practical properties, including noticeable solvatochromism, high polarizability/hyperpolarizabilities, and the ability to sensitize various physicochemical processes. Accordingly, merocyanines are applied and extensively studied in various fields, such as light-converting materials for optoelectronics, nonlinear optics, optical storage, solar cells, fluorescent probes, and antitumor agents in photodynamic therapy. This review encompasses both classical and novel more important publications on the structure-property relationships in merocyanines, with particular emphasis on the results by A. I. Kiprianov and his followers in Institute of Organic Chemistry in Kyiv, Ukraine.
Collapse
Affiliation(s)
- Andrii V Kulinich
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Akademika Kukharya St., 02094, Kyiv, Ukraine
| | - Alexander A Ishchenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Akademika Kukharya St., 02094, Kyiv, Ukraine
| |
Collapse
|
24
|
Kopcsik E, Mucsi Z, Kontra B, Vanyorek L, Gál R, Viskolcz B, Nagy M. Excited state iminium form can explain the unexpected solvatochromic behavior of symmetric 1,5- and 1,8-diaminonaphthalenes. Chem Commun (Camb) 2024; 60:1008-1011. [PMID: 38168692 DOI: 10.1039/d3cc05643k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
A new model, based on the presence of the excited state iminium ion (Ar = NH2+), is proposed to interpret the solvatochromic behavior of symmetric 1,5- and 1,8-diaminonaphtahelenes (DANs) in aprotic to protic media. The importance of using explicit solvent models during DFT calculations in protic solvents to find the proper excited structure for symmetric molecules is also highlighted.
Collapse
Affiliation(s)
- Erika Kopcsik
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Miskolc 3515, Hungary.
| | - Zoltán Mucsi
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Miskolc 3515, Hungary.
| | - Bence Kontra
- Department of Organic Chemistry, Semmelweis University, Hőgyes Endre utca 7, H-1092, Budapest, Hungary
| | - László Vanyorek
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Miskolc 3515, Hungary.
| | - Rajmond Gál
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Miskolc 3515, Hungary.
| | - Béla Viskolcz
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Miskolc 3515, Hungary.
- Advanced Materials and Intelligent Technologies Higher Education and Industrial Cooperation Centre, University of Miskolc, Miskolc 3515, Hungary
| | - Miklós Nagy
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Miskolc 3515, Hungary.
| |
Collapse
|
25
|
Shekharagouda P, Mamatha GP, Nagaraju G, Krishnamurthy C, Gouthaman S, Al-Asbahi BA, Al-Hada NM, Naik L. Spectroscopic Studies on Structurally Modified Anthraquinone Azo Hydrazone Tautomer: Theoretical and Experimental Approach. J Fluoresc 2024:10.1007/s10895-023-03542-3. [PMID: 38183589 DOI: 10.1007/s10895-023-03542-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 12/05/2023] [Indexed: 01/08/2024]
Abstract
A series of unique four mono-azo substituted anthraquinone analogue were synthesized by using the anthraquinone components in the diazo-coupling technique. The FT-IR, 1H NMR, and HRMS, data were used to confirm the structure of the molecules, and spectroscopic techniques like UV-Vis, and photoluminescence spectroscopy were employed to estimate the photophysical properties of the molecules. The molecular optimized geometry and frontier molecular orbitals were estimated using density functional theory. Further, global chemical reactivity descriptors parameter was theoretically estimated using the value of the highest occupied molecular orbit and lowest unoccupied molecular orbits. The anti-tubercular action of the synthesised dyes were also examined. The results of this biological activity showed that N-isopropyl aniline combined with anthraquinone N-isopropyl aniline had superior anti-tubercular activity when compared to Rifampicin as the standard. As per molecular docking studies, the synthesized compound Q1 showed excellent binding energy (-10.0 kcal/mol) among all compounds against the 3ZXR Protein. These results agreed with our in-vitro anti-TB activity results.
Collapse
Affiliation(s)
- Pampapathi Shekharagouda
- Department of Studies in Chemistry, Davangere University, Shivagangothri, 577 007, Davanagere, Karnataka, India
| | - G P Mamatha
- Department of Studies in Chemistry, Davangere University, Shivagangothri, 577 007, Davanagere, Karnataka, India.
| | - G Nagaraju
- Energy Material Research Laboratory, Department of Chemistry, Siddaganga Institute of Technology, Tumakuru, Karnataka, 572 103, India
| | - Chethan Krishnamurthy
- Department of PG Studies and Research in Chemistry, Kuvempu University, Jnanasahyadri, Shankaraghatta, 577451, Shivamogga, Karnataka, India
| | - Siddan Gouthaman
- Organic material lab, Department of Chemistry, School of Chemistry, Indian Institute of Technology, Roorkee, Uttarakhand, 247667, India
| | - Bandar Ali Al-Asbahi
- Department of Physics & Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Naif Mohammed Al-Hada
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou, 253023, China
| | - Lohit Naik
- Department of Physics and Electronics, CHRIST University, Bengaluru, Central Campus, Bengaluru, 560029, Karnataka, India.
| |
Collapse
|
26
|
Shkoor M, Thotathil V, Al-Zoubi RM, Su HL, Bani-Yaseen AD. Combined experimental and computational investigations of the fluorosolvatochromism of chromeno[4,3-b]pyridine derivatives: Effect of the methoxy substitution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 303:123210. [PMID: 37536243 DOI: 10.1016/j.saa.2023.123210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/23/2023] [Accepted: 07/26/2023] [Indexed: 08/05/2023]
Abstract
Extensive research has been conducted on the spectral properties of chromeno[4,3-b]pyridine derivatives, owing to their potential applications in sensing, optoelectronic devices, and drug discovery. This study presents a comprehensive investigation into the fluorosolvatochromism of selected chromeno[4,3-b]pyridine derivatives, with a particular emphasis on the impact of methoxy substitution. Three derivatives were synthesized and subjected to spectral analysis: chromeno[4,3-b]pyridine-3-carboxylate (I) as the parent compound, and its 7-methoxy (II) and 8-methoxy (III) substituted derivatives.The UV-Vis absorption spectra of all derivatives exhibited a broad band with a maximum absorption wavelength that remained unaffected by the surrounding medium. However, distinct fluorescence properties were observed among them. Specifically, derivative II displayed notable fluorescence, while derivatives I and III exhibited no fluorescence properties. Furthermore, derivative II exhibited a fluorescence spectrum that is significantly influenced by the polarity of the medium. To investigate the fluorosolvatochromic behavior in depth, we conducted a comprehensive analysis using various neat solvents with different polarities and hydrogen bonding capabilities. The results obtained revealed a significant positive fluorosolvatochromism, with a bathochromic shift in the fluorescence spectrum as the solvent polarity increased. To understand how specific and non-specific interactions between the solute and the solvent affected the fluorosolvatochromism of II, we employed the four empirical scales model of Catalán. The obtained results demonstrated that intramolecular charge transfer played a crucial role in the fluorescence behavior of II. To provide a molecular-level explanation for the experimental spectral properties, we utilized the DFT and TD-DFT/B3LYP/6-31 + G(d) computational methods with the IEFPCM implicit solvation approach. The spectral differences between II and III were rationalized in terms of the frontier molecular orbitals (FMOs: the HOMO and LUMO), where distinct natures were observed among the examined derivatives. This study offers valuable insights into the impact of methoxy substitution on the physical and chemical properties of chromeno[4,3-b]pyridine derivatives, specifically concerning their spectral properties as elucidated by their fluorosolvatochromic behavior.
Collapse
Affiliation(s)
- Mohanad Shkoor
- Department of Chemistry & Earth Sciences, Faculty of Arts & Science, Qatar University, P.O. Box: 2713, Doha, Qatar.
| | - Vandana Thotathil
- Department of Chemistry & Earth Sciences, Faculty of Arts & Science, Qatar University, P.O. Box: 2713, Doha, Qatar
| | - Raed M Al-Zoubi
- Surgical Research Section, Department of Surgery, Hamad Medical Corporation, Doha, Qatar; Department of Biomedical Sciences, College of Health Sciences, QU-Health, Qatar University, Doha 2713, Qatar; Department of Chemistry, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan
| | - Haw-Lih Su
- Department of Nature Biotechnology, Nanhua University, Chiayi County 62249, Taiwan
| | - Abdulilah Dawoud Bani-Yaseen
- Department of Chemistry & Earth Sciences, Faculty of Arts & Science, Qatar University, P.O. Box: 2713, Doha, Qatar.
| |
Collapse
|
27
|
Jouyban A, Khezri S, Jafari P, Zarghampour A, Acree WE. A new set of solute descriptors to calculate solubility of drugs in mono-solvents. ANNALES PHARMACEUTIQUES FRANÇAISES 2023; 81:1109-1117. [PMID: 37060940 DOI: 10.1016/j.pharma.2023.04.002] [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: 01/16/2023] [Revised: 03/27/2023] [Accepted: 04/12/2023] [Indexed: 04/17/2023]
Abstract
A new set of solute parameters derived from a correlation model using Catalan parameters. The parameters represent the interaction of the solute with the mono-solvents at 298.15K. The computational procedure was adopted from Abraham's solvation model and the obtained results are promising. In this work, the calculated parameters were used to back-calculate the drugs solubility in various mono-solvents at different temperatures employing the van't Hoff's model as the skeleton on the derived model. The obtained mean percentage deviations (MPDs) were in the range of 3.1 to 88.5% with the overall MPD of 29.1%. (1) Derivation of a new set of solute parameters from a correlation model using Catalan parameters; (2) adoption of the calculation method of Abraham's solvation model with the skeleton of van't Hoff's equation; (3) using the achieved parameters for back-calculation of drugs solubility in various mono-solvents; (4) obtaining an overall acceptable mean percentage deviation of 29.1% from calculations.
Collapse
Affiliation(s)
- Abolghasem Jouyban
- Pharmaceutical Analysis Research Center, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Pharmaceutical Sciences Research Center, Shahid Beheshti University of Medical Sciences, 5165665811 Tehran, Iran.
| | - Soma Khezri
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran; Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Parisa Jafari
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran; Kimia Idea Pardaz Azarbayjan (KIPA) Science Based Company, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aynaz Zarghampour
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - William E Acree
- Department of Chemistry, University of North Texas, 76203-5070 Denton, TX, USA
| |
Collapse
|
28
|
Sorfleet JT, Shin JW. Polarimetry study of the intrinsic rotation of (1R,4R)-(+)-camphor in organic solvents. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2023.111904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
|
29
|
Guzmán-Méndez Ó, Reza MM, Meza B, Jara-Cortés J, Peón J. Solvent Effects on the Singlet-Triplet Couplings in Nitroaromatic Compounds. J Phys Chem B 2023. [PMID: 37327487 DOI: 10.1021/acs.jpcb.3c01143] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Nitrated polycyclic molecules can present the largest singlet-triplet crossing rates among organic molecules. This implies that most of these compounds have no detectable steady-state fluorescence. In addition, some nitroaromatics undergo a complex series of photoinduced atom rearrangements that result in nitric oxide dissociation. The overall photochemistry of these systems depends critically on the competition between the rapid intersystem crossing channel and other excited-state pathways. In this contribution, we sought to characterize the degree of stabilization of the S1 state due to solute-solvent interactions, and to quantify the effect of such stabilization on their photophysical pathways. We studied 2- and 4-nitropyrene (2-NP and 4-NP), which are atypically emissive nitroaromatics in a series of solvents. From steady-state and time-resolved measurements, the S1 state of these molecules shows significant stabilization as the solvent polarity is increased. On the other hand, specific triplet states that are iso-energetic with the emissive singlet (T3 for 2-NP and T2 for 4-NP) in nonpolar solvents become slightly de-stabilized upon increasing the solvent polarity. These combined effects result in rapid singlet-triplet population transfer in nonpolar solvents for both molecules. In contrast, for solvents with even slightly higher polarities, the first excited singlet is stabilized in relation to the specific triplet states, leading to much longer S1 lifetimes. These effects can be summarized as a highly solvent-dependent coupling/decoupling of the manifolds. Similar effects are also likely to be present in other nitroaromatics where there is a dynamic competition between nitric oxide dissociation and intersystem crossing. The drastic effects of the solvent polarity in the manifold crossing pathway should be taken into consideration in both theoretical and experimental studies of nitroaromatics.
Collapse
Affiliation(s)
- Óscar Guzmán-Méndez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México, 04510 Ciudad de México, México
| | - Mariana M Reza
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México, 04510 Ciudad de México, México
| | - Brandon Meza
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México, 04510 Ciudad de México, México
| | - Jesús Jara-Cortés
- Unidad Académica de Ciencias Básicas e Ingenierías, Universidad Autónoma de Nayarit, Tepic 63155, México
| | - Jorge Peón
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México, 04510 Ciudad de México, México
| |
Collapse
|
30
|
Mateus DBG, Paula de Lima Batista A, da Silva Souza S, Jean-François Demets G, Nikolaou S. Solvatochromism and solution π-stacking of N-(4-pyridyl)-1,8-naphthalimide and its corresponding triruthenium coordination complex. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 292:122420. [PMID: 36738579 DOI: 10.1016/j.saa.2023.122420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 01/12/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
Due to the scarcity of spectroscopic studies on metal-coordinated naphthalimides, and aiming to investigate fundamental spectroscopic aspects, we have described here the aggregates of N-(4-pyridyl)-1,8-naphthalimide (NI-py) in solution as well as solvatochromism displayed by it and by the coordination compounds [Ru3O(CH3COO)6(NI-py)3]n, n = +1 or 0. Based both on theoretical calculations and luminescence spectra, we demonstrated that in aqueous media, the NI-py π-stacking is thermodynamically favored, suggesting a preferable conformation where the pyridine and naphthalene moieties of two NI-py molecules are parallel to each other, but are not co-planar within an individual molecule, due to steric hindrance. The NI-py ππ* band displayed positive solvatochromism, to which the major contribution was the Catalan's SP parameter (solvent polarizability). This observation is fully consistent with the extended π-electron cloud of the NI-py naphthalene ring. However, a secondary contribution of the SA (solvent acidity) was also observed, owing to the electron pairs available at the N-heteroatom of the pyridine rings and at the carbonyl-group oxygen atoms. Finally, the multiparametric solvent effect analysis indicated that the electronic coupling between coordinated NI-py and the metallic core is modulated by the charge of the [Ru3O(CH3COO)6] core, being higher for the reduced species [Ru3O(CH3COO)6(NI-py)]0. In addition, in this reduced species, there is no overlap between NI-py ππ* and the [Ru3O(CH3COO)6] charge transfer (CT) transitions, leading to the observation of the dependence of the CT energy with the SdP parameter (solvent dipolarity) since the CT transition implies in a charge-separation state.
Collapse
Affiliation(s)
- Douglas Braz Gonçalves Mateus
- Departamento de Química, Laboratório de Atividade Biológica e Química Supramolecular de Compostos de Coordenação (LABiQSC(2)), Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil
| | - Ana Paula de Lima Batista
- Departamento de Química, Laboratório de Atividade Biológica e Química Supramolecular de Compostos de Coordenação (LABiQSC(2)), Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil; Departamento de Química, Grupo Computacional de Catálise e Espectroscopia (GCCE), Universidade Federal de São Carlos (UFSCar), Rod. Washington Luiz, km 235, CP 676, 13565-905 São Carlos, SP, Brazil
| | - Sâmya da Silva Souza
- Departamento de Química, Laboratório de Atividade Biológica e Química Supramolecular de Compostos de Coordenação (LABiQSC(2)), Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil
| | - Grégoire Jean-François Demets
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil
| | - Sofia Nikolaou
- Departamento de Química, Laboratório de Atividade Biológica e Química Supramolecular de Compostos de Coordenação (LABiQSC(2)), Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil.
| |
Collapse
|
31
|
Kopcsik E, Mucsi Z, Kontra B, Vanyorek L, Váradi C, Viskolcz B, Nagy M. Preparation and Optical Study of 1-Formamido-5-Isocyanonaphthalene, the Hydrolysis Product of the Potent Antifungal 1,5-Diisocyanonaphthalene. Int J Mol Sci 2023; 24:ijms24097780. [PMID: 37175485 PMCID: PMC10177923 DOI: 10.3390/ijms24097780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/18/2023] [Accepted: 04/22/2023] [Indexed: 05/15/2023] Open
Abstract
Aromatic isocyanides have gained a lot of attention lately as promising antifungal and anticancer drugs, as well as high-performance fluorescent analytical probes for the detection of toxic metals, such as mercury, even in vivo. Since this topic is relatively new and aromatic isocyanides possess unique photophysical properties, the understanding of structure-behavior relationships and the preparation of novel potentially biologically active derivatives are of paramount importance. Here, we report the photophysical characterization of 1,5-diisocyanonaphthalene (DIN) backed by quantum chemical calculations. It was discovered that DIN undergoes hydrolysis in certain solvents in the presence of oxonium ions. By the careful control of the reaction conditions for the first time, the nonsymmetric product 1-formamido-5-isocyanonaphthalene (ICNF) could be prepared. Contrary to expectations, the monoformamido derivative showed a significant solvatochromic behavior with a ~50 nm range from hexane to water. This behavior was explained by the enhanced H-bond-forming ability of the formamide group. The significance of the hydrolysis reaction is that the isocyano group is converted to formamide in living organisms. Therefore, ICNF could be a potential drug (for example, antifungal) and the reaction can be used as a model for the preparation of other nonsymmetric formamido-isocyanoarenes. In contrast to its relative 1-amino-5-iscyanonaphthalene (ICAN), ICNF is highly fluorescent in water, enabling the development of a fluorescent turnoff probe.
Collapse
Affiliation(s)
- Erika Kopcsik
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, 3515 Miskolc, Hungary
| | - Zoltán Mucsi
- Advanced Materials and Intelligent Technologies Higher Education and Industrial Cooperation Centre, University of Miskolc, Miskolc-Egyetemváros, 3515 Miskolc, Hungary
- Department of Chemistry, Brain Vision Center, Liliom utca 43-45, 1094 Budapest, Hungary
| | - Bence Kontra
- Department of Chemistry, Brain Vision Center, Liliom utca 43-45, 1094 Budapest, Hungary
- Department of Organic Chemistry, Semmelweis University, Hőgyes Endre utca 7, 1092 Budapest, Hungary
| | - László Vanyorek
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, 3515 Miskolc, Hungary
| | - Csaba Váradi
- Advanced Materials and Intelligent Technologies Higher Education and Industrial Cooperation Centre, University of Miskolc, Miskolc-Egyetemváros, 3515 Miskolc, Hungary
| | - Béla Viskolcz
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, 3515 Miskolc, Hungary
- Advanced Materials and Intelligent Technologies Higher Education and Industrial Cooperation Centre, University of Miskolc, Miskolc-Egyetemváros, 3515 Miskolc, Hungary
| | - Miklós Nagy
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, 3515 Miskolc, Hungary
| |
Collapse
|
32
|
Ni Y, Fang W, Olson MA. Fluorescent Molecular Rotors Based on Hinged Anthracene Carboxyimides. Molecules 2023; 28:molecules28073217. [PMID: 37049979 PMCID: PMC10096540 DOI: 10.3390/molecules28073217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/20/2023] [Accepted: 03/30/2023] [Indexed: 04/14/2023] Open
Abstract
Temperature and viscosity are essential parameters in medicine, environmental science, smart materials, and biology. However, few fluorescent sensor publications mention the direct relationship between temperature and viscosity. Three anthracene carboxyimide-based fluorescent molecular rotors, 1DiAC∙Cl, 2DiAC∙Cl, and 9DiAC∙Cl, were designed and synthesized. Their photophysical properties were studied in various solvents, such as N, N-dimethylacetamide, N, N-dimethylformamide, 1-propanol, ethanol, dimethyl sulfoxide, methanol, and water. Solvent polarizability resulted in a solvatochromism effect for all three rotors and their absorption and emission spectra were analyzed via the Lippert-Mataga equation and multilinear analysis using Kamlet-Taft and Catalán parameters. The rotors exhibited red-shifted absorption and emission bands in solution on account of differences in their torsion angle. The three rotors demonstrated strong fluorescence in a high-viscosity environment due to restricted intramolecular rotation. Investigations carried out under varying ratios of water to glycerol were explored to probe the viscosity-based changes in their optical properties. A good linear correlation between the logarithms of fluorescence intensity and solution viscosity for two rotors, namely 2DiAC∙Cl and 9DiAC∙Cl, was observed as the percentage of glycerol increased. Excellent exponential regression between the viscosity-related temperature and emission intensity was observed for all three investigated rotors.
Collapse
Affiliation(s)
- Yanhai Ni
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Wangjian Fang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Mark A Olson
- Department of Physical and Environmental Sciences, Texas A&M University Corpus Christi, Corpus Christi, TX 78412, USA
| |
Collapse
|
33
|
Solvatochromism, Acidochromism and Photochromism of the 2,6-Bis(4-hydroxybenzylidene) Cyclohexanone Derivative. Int J Mol Sci 2023; 24:ijms24065286. [PMID: 36982360 PMCID: PMC10049195 DOI: 10.3390/ijms24065286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/27/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
In this paper, we studied the photophysical behavior of 2,6-bis(4-hydroxybenzylidene) cyclohexanone (BZCH) under the influence of various stimuli. The photophysical properties were correlated with different solvent parameters, such as the Kamlet–Abraham–Taft (KAT), Catalán, and Laurence solvent scales, suggesting that the behavior of BZCH is influenced by both nonspecific and specific solvent-solute interactions. The Catalán solvent dipolarity/polarizability parameters were found to have a significant role in the solvatochromic behavior, which is also confirmed by the KAT and Laurence models. The acidochromism and photochromism properties of this sample in dimethylsulfoxide and chloroform solutions were also investigated. The compound showed reversible acidochromism after the addition of dilute NaOH/HCl solutions, accompanied by a change in color and the appearance of a new absorption band (514 nm). The photochemical behavior was also examined by irradiating BZCH solutions with both 254 and 365 nm light.
Collapse
|
34
|
Khaled MM, Ismail MA, Medien HAA, Abdel-Shafi AA, Abdel-Samad HS. Photophysical properties of push-pull monocationic D-π-A + thiophene based derivatives: Fluorosolvatochromism and pH studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 288:122090. [PMID: 36442344 DOI: 10.1016/j.saa.2022.122090] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/27/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
Photophysical properties of two thiophene salts of the form D-π-A+ are studied in several solvents and at various pH values of the aqueous solution. The studied compounds embrace methoxy group as electron donating moiety at one end and cationic amidine group with and without fluorine atom at the ortho position of the amidine group as the electron withdrawing group at the other end of the molecules and separated by thiophene ring. The two thiophene derivatives are 4-(5-(4-methoxyphenyl)thiophen-2-yl)benzamidine hydrochloride salt (MOTB) and 2-fluoro-4-(5-(4-methoxyphenyl) thiophen-2-yl)benzamidine hydrochloride salt (FMOTB). The observed changes in the fluorescence emission spectra with the nature of the solvent were found to be much more pronounced than the corresponding absorption spectra which signify an emission from the intramolecular charge transfer state. The higher bathochromic shift in the fluorescence emission spectra than the absorption spectra indicates that the excited state dipole moment is larger than that of the ground state. It has also been observed that the presence of the fluorine atom in the electron withdrawing part does not show any changes in the absorption spectra while a clear bathochromic shift is observed in the fluorescence emission spectra indicating an enhanced strength of the electron withdrawing ability in case of FMOTB. Effect of pH was also studied and pKa values were evaluated. The observed photophysical properties were correlated to the normalized solvent polarity parameter (ETN) when solvents are classified to protic and aprotic solvents. This designates the importance of hydrogen bonding interactions. We have also applied a couple of linear solvation energy relationships for better understanding of the exact contribution of each solvent parameter on each photophysical property. We have found that both Catalán's and Laurence's treatments show that the photophysical properties are mainly controlled by the solvent's non-specific interactions. However, these models were not sufficient to interpret the observed data without the inclusion of the participation of the specific interactions.
Collapse
Affiliation(s)
- Maha M Khaled
- Department of Chemistry, Faculty of Science, Ain Shams University, 11566 Abbassia, Cairo, Egypt
| | - Mohamed A Ismail
- Department of Chemistry, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt
| | - Hesham A A Medien
- Department of Chemistry, Faculty of Science, Ain Shams University, 11566 Abbassia, Cairo, Egypt
| | - Ayman A Abdel-Shafi
- Department of Chemistry, Faculty of Science, Ain Shams University, 11566 Abbassia, Cairo, Egypt.
| | - Hesham S Abdel-Samad
- Department of Chemistry, Faculty of Science, Ain Shams University, 11566 Abbassia, Cairo, Egypt
| |
Collapse
|
35
|
Shahin M, Alazaly AM, Ismail MA, Abdel-Shafi AA. Effect of the π-bridge structure on the intramolecular charge transfer of push-pull 2-phenylthiophene and 2-(furan-2-yl)pyridine derivatives. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
|
36
|
Kara YE, Sıdır YG, Sıdır İ, Kandemirli F. Solvatochromism and Optoelectronic Properties of Thiosemicarbazone Derivatives Having π-Conjugated Systems. J SOLUTION CHEM 2023. [DOI: 10.1007/s10953-023-01248-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
|
37
|
Vergaelen M, Monnery BD, Jerca VV, Hoogenboom R. Detailed Understanding of Solvent Effects for the Cationic Ring-Opening Polymerization of 2-Ethyl-2-oxazoline. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c01930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- Maarten Vergaelen
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - Bryn D. Monnery
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
- Targeted Drug Delivery with Nanomedicine Group, University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AW Groningen, Netherlands
| | - Valentin Victor Jerca
- Smart Organic Materials Group, “Costin D. Nenitzescu” Institute of Organic and Supramolecular Chemistry, 202B Spl. Independentei CP 35-108, Bucharest 060023, Romania
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| |
Collapse
|
38
|
Chamlagai D, Phanrang PT, Dkhar L, Mohan Rao K, Mitra S. Combined experimental and computational studies on the photophysical properties of systematically substituted polypyridyl based ligands on a benzene core. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
39
|
Tigreros A, Bedoya-Malagón C, Valencia A, Núñez-Portela M, Portilla J. Photophysical and anion sensing properties of a triphenylamine-dioxaborinine trimeric compound. RSC Adv 2023; 13:1757-1764. [PMID: 36712638 PMCID: PMC9828043 DOI: 10.1039/d2ra07498b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 12/29/2022] [Indexed: 01/11/2023] Open
Abstract
Herein, we report the synthesis and photophysical characterization of the novel tris(4-(2,2-difluoro-6-methyl-2H-1λ3,3,2λ4-dioxaborinin-4-yl)phenyl)amine trimeric probe (A2) via the reaction between triphenylamine (1), acetic anhydride, and BF3·OEt2 implying the twelve new bond formation in a one-pot manner. This highly fluorescent compound in solution (φ up to 0.91 at 572 nm) and solid state (φ = 0.24 at 571 nm) showed a better solvatofluorochromism than its analog monomeric A1 due to symmetry-broken charge transfer, which is consistent with high solvent dipolarity (SdP) response in Catalán's multiparametric regression. Notably, A2 had a high sensibility and selectivity for CN- or F- in solution (LODCN-/F- = 0.18/0.70 μM), and CN- can be discriminated from F- by the reaction of A2 with 3.0 equiv. of CN-. In addition, A2 was impregnated on filter paper to prepare test strips that were applied to naked-eye qualitative sensing of CN- or F-. Finally, the octupolar system in A2 allows for better action of two-photon excitation cross-section values when compared with that of the dipolar structure in A1. These findings provide further information for the design of new efficient two-photon absorption dyes.
Collapse
Affiliation(s)
- Alexis Tigreros
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de Los AndesCarrera 1 No. 18A-10Bogotá 111711Colombia
| | - Camilo Bedoya-Malagón
- Quantum Optics Laboratory, Department of Physics, Universidad de Los AndesCarrera 1 No. 18A-10BogotáColombia
| | - Alejandra Valencia
- Quantum Optics Laboratory, Department of Physics, Universidad de Los AndesCarrera 1 No. 18A-10BogotáColombia
| | - Mayerlin Núñez-Portela
- Quantum Optics Laboratory, Department of Physics, Universidad de Los AndesCarrera 1 No. 18A-10BogotáColombia
| | - Jaime Portilla
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de Los AndesCarrera 1 No. 18A-10Bogotá 111711Colombia
| |
Collapse
|
40
|
Miotke-Wasilczyk M, Kwela J, Lewkowicz A, Józefowicz M. Insight into the release mechanisms of diflunisal and salicylic acid from poly(vinyl alcohol). The role of hydrogen bonding interactions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 284:121802. [PMID: 36070674 DOI: 10.1016/j.saa.2022.121802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 08/04/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
Diflunisal (5-(2,4-Difluorophenyl)salicylic acid, DIF), salicylic acid (SAL) derivative, which, on the one hand, is active pharmaceutical ingredient, on the other hand, belongs to the compounds exhibiting excited-state intramolecular proton transfer (ESIPT) behaviour was used to study the drug interactions with poly(vinyl alcohol) (PVA) matrix. For clarifying the nature and mechanisms of the drug-matrix interactions the salicylic acid (SAL) molecule was selected as the model active ESIPT compound, whose physicochemical properties in different media are well understood. The solute-solvent interactions (non-specific (dipole-dipole) versus specific (hydrogen bonding)) of DIF and SAL with different neat solvents were investigated using the steady-state spectroscopic technique. The solvent effect on spectral behaviours of DIF and SAL was analyzed based on the parametric solvent scales. In order to identify functional groups in the PVA matrices, determine the structure present in the studied molecule-PVA system and thus obtain information about the potential interactions between PVA and the studied molecules, the Raman spectra of pure PVA, SAL-PVA and DIF-PVA systems were measured. It has been shown that the molecular structure of the active substance entrapped in the polymer matrix affects the structure of the polymer, i.e., isotactic (SAL-PVA) versus syndiotactic (DIF-PVA) structure. The analysis of drug release kinetics revealed that the DIF is more strongly bound to PVA in comparison to SAL, which confirms conclusions drawn from the analysis of the Raman spectra i.e., the isotactic structure of SAL-PVA material results in a faster initial release process of weakly bound, located on the surface of the polymer SAL molecules.
Collapse
Affiliation(s)
- Marta Miotke-Wasilczyk
- Insitute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, Wita Stwosza 57, 80-308 Gdańsk, Poland.
| | - Jerzy Kwela
- Insitute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, Wita Stwosza 57, 80-308 Gdańsk, Poland
| | - Aneta Lewkowicz
- Insitute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, Wita Stwosza 57, 80-308 Gdańsk, Poland
| | - Marek Józefowicz
- Insitute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, Wita Stwosza 57, 80-308 Gdańsk, Poland.
| |
Collapse
|
41
|
Solute-solvent interaction and DFT studies on bromonaphthofuran 1,3,4-oxadiazole fluorophores for optoelectronic applications. J Mol Graph Model 2023; 118:108367. [PMID: 36334420 DOI: 10.1016/j.jmgm.2022.108367] [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: 06/07/2022] [Revised: 10/07/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022]
Abstract
In the present work, computational and experimental studies were carried out to explore the photophysical properties of bromonaphthofuran substituted 1,3,4-oxadiazole derivatives for optoelectronic applications. Density functional theory (DFT) was used to demonstrate the electronic and optical properties of the synthesised molecules. The theoretical ground state dipole moments of the fluorophores in gas and solvent environments were also computed using Gaussian 09W software. Further, the HOMO-LUMO energies of the fluorophores determined using DFT agree well with the experimental values. Molecular electrostatic potential 3D plots were used to identify the sites which are electrophilic and nucleophilic in nature. Dipole moment of both the fluorophores in ground and excited states were determined experimentally. The excited state dipole moments being higher than that of the ground state shows the redistribution of electron densities in the excited state than in the ground state in both the fluorophores. The solute-solvent interactions, both specific and non-specific, were assessed using Catalan parameters. Further, the nature of chemical reactivity was determined based on global descriptors. The photophysical properties of the fluorophores studied suggest their potential use as promising candidates for organic light emitting diode (OLED), solar cell and chemosensor applications.
Collapse
|
42
|
Onyido I, Obumselu OF, Egwuatu CI, Okoye NH. Solvent and solvation effects on reactivities and mechanisms of phospho group transfers from phosphate and phosphinate esters to nucleophiles. Front Chem 2023; 11:1176746. [PMID: 37179775 PMCID: PMC10172589 DOI: 10.3389/fchem.2023.1176746] [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: 02/28/2023] [Accepted: 04/03/2023] [Indexed: 05/15/2023] Open
Abstract
Organophosphorus esters fulfil many industrial, agricultural, and household roles. Nature has deployed phosphates and their related anhydrides as energy carriers and reservoirs, as constituents of genetic materials in the form of DNA and RNA, and as intermediates in key biochemical conversions. The transfer of the phosphoryl (PO3) group is thus a ubiquitous biological process that is involved in a variety of transformations at the cellular level such as bioenergy and signals transductions. Significant attention has been paid in the last seven decades to understanding the mechanisms of uncatalyzed (solution) chemistry of the phospho group transfer because of the notion that enzymes convert the dissociative transition state structures in the uncatalyzed reactions into associative ones in the biological processes. In this regard, it has also been proposed that the rate enhancements enacted by enzymes result from the desolvation of the ground state in the hydrophobic active site environments, although theoretical calculations seem to disagree with this position. As a result, some attention has been paid to the study of the effects of solvent change, from water to less polar solvents, in uncatalyzed phospho transfer reactions. Such changes have consequences on the stabilities of the ground and the transition states of reactions which affect reactivities and, sometimes, the mechanisms of reactions. This review seeks to collate and evaluate what is known about solvent effects in this domain, especially their effects on rates of reactions of different classes of organophosphorus esters. The outcome of this exercise shows that a systematized study of solvent effects needs to be undertaken to fully understand the physical organic chemistry of the transfer of phosphates and related molecules from aqueous to substantially hydrophobic environments, since significant knowledge gaps exist.
Collapse
|
43
|
Xanthene dyes for cancer imaging and treatment: A material odyssey. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
44
|
Khadem Sadigh M, Shamkhali A, Teimuri-Mofrad R, Mozaffarnia S, Rahimpour K. Polarity effects on the optical responses of some biologically active molecules with different substituents. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
45
|
8-Aminoquinoline-containing squaric acid congeners as polarity and viscosity probes. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
46
|
Amine-Reactive BODIPY Dye: Spectral Properties and Application for Protein Labeling. Molecules 2022; 27:molecules27227911. [PMID: 36432012 PMCID: PMC9692440 DOI: 10.3390/molecules27227911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/11/2022] [Accepted: 11/13/2022] [Indexed: 11/17/2022] Open
Abstract
A boron-dipyrromethene (BODIPY) derivative reactive towards amino groups of proteins (NHS-Ph-BODIPY) was synthesized. Spectroscopic and photophysical properties of amine-reactive NHS-Ph-BODIPY and its non-reactive precursor (COOH-Ph-BODIPY) in a number of organic solvents were investigated. Both fluorescent dyes were characterized by green absorption (521-532 nm) and fluorescence (538-552 nm) and medium molar absorption coefficients (46,500-118,500 M-1·cm-1) and fluorescence quantum yields (0.32 - 0.73). Solvent polarizability and dipolarity were found to play a crucial role in solvent effects on COOH-Ph-BODIPY and NHS-Ph-BODIPY absorption and emission bands maxima. Quantum-chemical calculations were used to show why solvent polarizability and dipolarity are important as well as to understand how the nature of the substituent affects spectroscopic properties of the fluorescent dyes. NHS-Ph-BODIPY was used for fluorescent labeling of a number of proteins. Conjugation of NHS-Ph-BODIPY with bovine serum albumin (BSA) resulted in bathochromic shifts of absorption and emission bands and noticeable fluorescence quenching (about 1.5 times). It was demonstrated that the sensitivity of BSA detection with NHS-Ph-BODIPY was up to eight times higher than with Coomassie brilliant blue while the sensitivity of PII-like protein PotN (PotN) detection with NHS-Ph-BODIPY and Coomassie brilliant blue was almost the same. On the basis of the molecular docking results, the most probable binding sites of NHS-Ph-BODIPY in BSA and PotN and the corresponding binding free energies were estimated.
Collapse
|
47
|
Begantsova YE, Baranov EV, Chesnokov SA. 4-(1H-Imidazo[4,5-f][1,10]phenanthrolin-2-yl)benzaldehyde as a probe in pure solvents: Solvatochromism, electric dipole moment and pH influence. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 280:121480. [PMID: 35753103 DOI: 10.1016/j.saa.2022.121480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 06/01/2022] [Accepted: 06/04/2022] [Indexed: 06/15/2023]
Abstract
The spectral properties of 4-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)benzaldehyde (1) in eleven organic solvents of different polarity have been studied. In order to determine the contributions of specific and non-specific interactions between the considered compound and the solvents, the solvatochromic Lippert-Mataga, McRae, Bakhshiev methods have been applied. The compound demonstrates positive solvatochromism. The dipole moment of the excited state of 1 obtained using the Reichardt method is equal to 10.56/7.08 D for trans- and cis-conformers, respectively, and agrees well with the theoretically calculated value. The influence of the polarizability of 1 on changes in the dipole moments has been analyzed using the Bilot-Kawski method. The multiple linear regression analysis in the framework of the Kamlet-Abboud-Taft and Catalán models has highlighted that the main properties which determine the Stokes shift of 1 are the acidity and dipolarity of the solvent. The variation of pH by additions of acid or base to solution 1 leads to significant changes in absorption and fluorescence spectra, therefore, 1 can be of interest as a solvatochromic probe, being sensitive to acidic/base properties of the environment. It has also been found out that the anion form of 1 is present in the DMSO solution. An addition of N,N-dimethylcyclohexylamine intensifies the dissociation of the considered compound in the DMSO solution and suppresses the fluorescence at a large amine excess.
Collapse
Affiliation(s)
- Yulia E Begantsova
- G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinin Str., Nizhny Novgorod 603950, Russian Federation.
| | - Evgeny V Baranov
- G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinin Str., Nizhny Novgorod 603950, Russian Federation
| | - Sergey A Chesnokov
- G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinin Str., Nizhny Novgorod 603950, Russian Federation
| |
Collapse
|
48
|
Moayednia A, Gilani AG, Zakerhamidi MS, Dezhampanah H, kian R. Investigation of the effective interactions of two bioactive compounds in different media. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
49
|
Spectral characteristics of 3, 5-diaminobenzoic acid in pure and mixed solvents: Experimental and theoretical study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
50
|
Aburto I, Muñoz M, Vidal M, Aliaga C, Domínguez M. Extending the π-system of inverted solvatochromic phenolate-based dyes shifts their inversion point due to an increment in their sensitivity to solvent polarizability. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|