1
|
Application of chemometric method and computational analysis in the spectroscopic study of Azure A dimerization. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
2
|
Gilani AG, Haghighat AG. A comparative photophysical study of molecular associative of structurally similar phenothiazine dyes in aqueous solutions of caffeine. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133861] [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]
|
3
|
Kostjukova LO, Leontieva SV, Kostjukov VV. Vibronic absorption spectrum and electronic properties of methylene blue in aqueous solution: TD-DFT study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116369] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
4
|
Revenga-Parra M, Villa-Manso AM, Briones M, Mateo-Martí E, Martínez-Periñán E, Lorenzo E, Pariente F. Bioelectrocatalytic platforms based on chemically modified nanodiamonds by diazonium salt chemistry. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136876] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
5
|
Shokoofehpoor F, Ghanadzadeh Gilani A, Chaibakhsh N, Khorshidi A, Poormohammadi Z, Abolghasemi S. Spectral and Aggregative Properties of Acid Blue 113 in Aqueous and Aqueous Solutions of Urea and in Colloids of Silver Nanoparticles. J SOLUTION CHEM 2020. [DOI: 10.1007/s10953-020-00995-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
6
|
Jahns M, Warwas DP, Krey MR, Nolte K, König S, Fröba M, Behrens P. Nanoporous hybrid core–shell nanoparticles for sequential release. J Mater Chem B 2020; 8:776-786. [DOI: 10.1039/c9tb01846h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Silica inside – organosilica outside, and nanoporous throughout: Drug molecules to be released sequentially from novel core–shell nanoparticles select their location (core/shell) autonomously.
Collapse
Affiliation(s)
- Mandy Jahns
- Institute for Inorganic Chemistry
- Gottfried Wilhelm Leibniz University Hannover
- 30167 Hannover
- Germany
- Cluster of Excellence Hearing4all
| | - Dawid Peter Warwas
- Institute for Inorganic Chemistry
- Gottfried Wilhelm Leibniz University Hannover
- 30167 Hannover
- Germany
| | - Marc Robert Krey
- Institute for Inorganic Chemistry
- Gottfried Wilhelm Leibniz University Hannover
- 30167 Hannover
- Germany
| | - Katharina Nolte
- Institute for Inorganic Chemistry
- Gottfried Wilhelm Leibniz University Hannover
- 30167 Hannover
- Germany
| | - Sandra König
- Institute of Inorganic and Applied Chemistry
- University of Hamburg
- 20146 Hamburg
- Germany
| | - Michael Fröba
- Institute of Inorganic and Applied Chemistry
- University of Hamburg
- 20146 Hamburg
- Germany
| | - Peter Behrens
- Institute for Inorganic Chemistry
- Gottfried Wilhelm Leibniz University Hannover
- 30167 Hannover
- Germany
- Cluster of Excellence Hearing4all
| |
Collapse
|
7
|
Zhang W, Zhang G, Wang W, Sun H, Du Q, Li X, Ge X, Li C. Modulation of release mechanisms of methylene blue (MB) monomers and dimers from silica-MB@shellac synthesized by antisolvent crystallization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 107:110309. [PMID: 31761185 DOI: 10.1016/j.msec.2019.110309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 10/02/2019] [Accepted: 10/11/2019] [Indexed: 12/01/2022]
Abstract
Release behaviors of drugs from drug deliveries are crucial for the enhancement of therapy efficiency, reduction of toxicity and patient compliance. Herein, antisolvent crystallization is employed to coat methlyene blue (MB)-loaded silica by shellac precipitation (silica-MB@shellac), which is simultaneously induced by outward diffusion of H+ ions from particular silica-MB. The encapsulation of shellac shell on silica-MB modulates the aggregation state of MB, which endows silica-MB@shellac a decreased MB's thermal stability, enhanced photoluminescence intensity, improved stability against in vitro reduction by ascorbic acid and retained photodynamic therapy activity. From the absorbance of MB supernatant obtained during incubation, the concentrations of MB monomers and dimers are determined via a non-linear regression analysis to investigate the influence of shellac coating on MB's release mechanisms from silica-MB@shellac. According to the simulated models, small diffusion constants of MB are caused by limited diffusion through shellac shells with high compaction degrees. These are observed for samples synthesized under high supersaturation degree during antisolvent crystallization. High degree of supersaturation is achieved through increasing shellac concentration, additive amount and dropping rate of antisolvent, as well as decreasing pH values of aqueous buffers as antisolvent. Furthermore, a combined mechanism of Fickian diffusion and Case-IΙ relaxation is proposed to describe the release behaviors of MB monomer and dimers from silica-MB@shellac. Therefore, this work may shed light on the encapsulation method of polymer on drug-loaded powders and the control of aggregation states of photosensitizers to promote the photoluminescence intensity, photodynamic therapy efficiency and controlled release behaviors.
Collapse
Affiliation(s)
- Wei Zhang
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Guangli Zhang
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Wenhao Wang
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Haibin Sun
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Qingyang Du
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Xiaowei Li
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Xiaolu Ge
- School of Physics and Optoelectronic Engineering, Shandong University of Technology, 255049, PR China
| | - Chengfeng Li
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China.
| |
Collapse
|
8
|
Altunay N, Elik A, Gürkan R. Natural deep eutectic solvent-based ultrasound-assisted-microextraction for extraction, pre-concentration and analysis of methylmercury and total mercury in fish and environmental waters by spectrophotometry. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 36:1079-1097. [DOI: 10.1080/19440049.2019.1619939] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Nail Altunay
- Faculty of Sciences, Department of Chemistry, Cumhuriyet University, Sivas, Turkey
| | - Adil Elik
- Faculty of Sciences, Department of Chemistry, Cumhuriyet University, Sivas, Turkey
| | - Ramazan Gürkan
- Faculty of Sciences, Department of Chemistry, Cumhuriyet University, Sivas, Turkey
| |
Collapse
|
9
|
|
10
|
Ghanadzadeh Gilani A, Poormohammadi-Ahandani Z, Kian R. Additive-induced aggregate changes of two structurally similar dyes in aqueous solutions: A comparative photophysical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 189:543-555. [PMID: 28866410 DOI: 10.1016/j.saa.2017.08.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/01/2017] [Accepted: 08/16/2017] [Indexed: 06/07/2023]
Abstract
Absorption and emission spectral characteristics of the two structurally similar phenothiazine dyes, azure B and toluidine blue, in aqueous solutions of the two sets of molecular additives (ureas and monosaccharides) were studied as a function of the dye and additive concentrations. The absorption spectra of the dyes were also studied in pure tetramethylurea with an aprotic nature. The spectral data were analyzed using DECOM Program. The dimer structure of the interacting molecules in these dyes was discussed using the exciton model. The urea class of additives was found to act as water structure-breakers over the range of studied concentration. The carbohydrate additives were found to act as water structure-breakers at low concentrations. However, the water structure breaking process may be disfavored by the additive-additive interactions at higher concentrations. It can be concluded that at low additive concentrations, the main driving force for breaking the dye association is water-additive interaction, which disrupts the water hydrogen bonds induced by the additives. However, at the high additive concentrations, the different phenomena including additive-additive and additive-dye interactions can change the structure, strength, and aggregative properties of the dyes. Finally, the urea in water induces noticeably fluorescence quenching in emission spectra of both the dyes.
Collapse
Affiliation(s)
| | | | - R Kian
- Research Institute for Applied Physics and Astronomy, University of Tabriz, Tabriz, Iran
| |
Collapse
|
11
|
Ghanadzadeh Gilani A, Dezhampanah H, Poormohammadi-Ahandani Z. A comparative spectroscopic study of thiourea effect on the photophysical and molecular association behavior of various phenothiazine dyes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 179:132-143. [PMID: 28237658 DOI: 10.1016/j.saa.2017.02.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 01/24/2017] [Accepted: 02/06/2017] [Indexed: 06/06/2023]
Abstract
This paper describes the role of a structure breaking additive (thiourea) on the photophysical and molecular association of a series of phenothiazine dyes in aqueous media using the absorption and fluorescence spectroscopic methods for the first time. The studied dyes were thionine, azure A, azure B, toluidine blue, and methylene blue. The spectral data were analyzed using DECOM program. Relevant spectral parameters in the dye solutions were estimated and discussed based on the chemical structure of the additive and excitonic treatment. The observation of spectral changes in the spectral data of the (water-additive-dye) system indicates the possible structure formation between the dye and additive molecules. However, it is found that in the high concentrations of thiourea the dimer geometries (H- and J-type dimers) are influenced by the dye-additive interactions. As a result, a competition between the dye-additive and dye-dye interactions was also observed.
Collapse
Affiliation(s)
| | - H Dezhampanah
- Department of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran
| | | |
Collapse
|
12
|
Khadem Sadigh M, Zakerhamidi M, Rezaei B, Milanchian K. Environment effects on the nonlinear absorption properties of Methylene blue under different power of excitation beam. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2016.12.108] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
13
|
Krzyszkowska E, Walkowiak-Kulikowska J, Stienen S, Wojcik A. Thionine–graphene oxide covalent hybrid and its interaction with light. Phys Chem Chem Phys 2017; 19:14412-14423. [DOI: 10.1039/c7cp01267e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Quenching of the thionine singlet excited state in covalently functionalized graphene oxide with an efficient back electron transfer process.
Collapse
Affiliation(s)
| | | | - Sven Stienen
- Helmholtz-Zentrum Dresden-Rossendorf
- Institute of Ion Beam Physics and Materials Research
- 01328 Dresden
- Germany
| | | |
Collapse
|
14
|
Vara J, Ortiz CS. Thiazine dyes: Evaluation of monomeric and aggregate forms. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 166:112-120. [PMID: 27219075 DOI: 10.1016/j.saa.2016.05.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 04/22/2016] [Accepted: 05/05/2016] [Indexed: 06/05/2023]
Abstract
The aggregation phenomenon of Azure B, monobrominated Azure B, Thionine and Methylene Blue was studied by UV-Visible spectrophotometry in different media as a function of dye concentration and temperature variations. The tests carried out in organic solvents allowed the identification of monomeric species of these compounds, which have not been reported in literature and have been wrongly assigned for years. The results obtained in water allowed demonstrating that different kinds of aggregates are present in this medium. In addition, the aggregation tendency of these dyes in organic solvent and aqueous media was established. Several parameters such as lipophilicity, effect of bulky substituents and interactions with media were considered to interpret the aggregation behavior of thiazine dyes.
Collapse
Affiliation(s)
- Jimena Vara
- Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Cristina S Ortiz
- Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.
| |
Collapse
|
15
|
Phenothiazines grafted on the electrode surface from diazonium salts as molecular layers for photochemical generation of singlet oxygen. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.10.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
16
|
Loginov M, Lebovka N, Vorobiev E. Hybrid multiwalled carbon nanotube − Laponite sorbent for removal of methylene blue from aqueous solutions. J Colloid Interface Sci 2014; 431:241-9. [DOI: 10.1016/j.jcis.2014.06.057] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 05/17/2014] [Accepted: 06/23/2014] [Indexed: 11/17/2022]
|
17
|
Piwowar K, Blacha-Grzechnik A, Turczyn R, Zak J. Electropolymerized phenothiazines for the photochemical generation of singlet oxygen. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.07.052] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
18
|
Ronzani F, Trivella A, Bordat P, Blanc S, Lacombe S. Revisiting the photophysics and photochemistry of methylene violet (MV). J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2014.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
19
|
Hojo M, Kondo Y, Zei K, Okamura K, Chen Z, Kobayashi M. Conductometric and UV–visible Spectroscopic Studies on the Strong Association between Polysulfonic or Dicarboxylic Acids and Their Conjugate Anions in Acetonitrile. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20130176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Masashi Hojo
- Department of Chemistry, Faculty of Science, Kochi University
| | - Yusuke Kondo
- Department of Chemistry, Faculty of Science, Kochi University
| | - Kosuke Zei
- Department of Chemistry, Faculty of Science, Kochi University
| | - Kei Okamura
- Center for Advanced Marine Core Research, Kochi University
| | - Zhidong Chen
- Department of Applied Chemistry, Changzhou University
| | | |
Collapse
|
20
|
|