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Mashita R, Sakae H, Nishiyama Y, Nagatani H. Spectroelectrochemical Analysis of Ion Transfer Mechanisms of Mitoxantrone at Liquid|Liquid Interfaces: Effects of Zwitterionic Dendrimer and Phospholipid Layer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:2111-2119. [PMID: 38171364 DOI: 10.1021/acs.langmuir.3c02980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
The ionic partition property and transfer mechanism of the anthraquinone antitumor agent mitoxantrone (MTX) were studied in detail at the water|1,2-dichloroethane (DCE) interface by means of surface-sensitive spectroelectrochemical techniques. The interfacial mechanism of the cationic MTX species was composed of potential-driven ion transfer and adsorption processes. The ion association between MTX and zwitterionic polyamidoamine (PAMAM) dendrimers with peripheral carboxy groups was also investigated in terms of the effects of pH and dendritic generation. The monovalent HMTX+ interacted effectively with the negatively charged dendrimers at neutral pH, while the divalent H2MTX2+ exhibited a weak association under acidic conditions. The higher stability of the dendrimer-MTX associates in the interfacial region was found for higher dendritic generations: G3.5 ≥ G2.5 > G1.5. The interfacial behavior of MTX and its dendrimer associates was further analyzed at the phospholipid-modified interface as a model biomembrane surface. The adsorption process of HMTX+ occurred mainly on the hydrophilic side of the phospholipid layer. The spectroelectrochemical results indicated that the dendrimers penetrate into the phospholipid layer and alter the transfer mechanism of HMTX+ across the interface.
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Affiliation(s)
- Ryuto Mashita
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Hiroki Sakae
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Faculty of Chemistry, Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Yoshio Nishiyama
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Faculty of Chemistry, Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Hirohisa Nagatani
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Faculty of Chemistry, Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
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Takami T, Kanai S, Nishiyama Y, Lee HJ, Nagatani H. Transfer Mechanism of Anthracycline Antibiotics and Their Ion‐Association with PAMAM Dendrimer at Liquid|Liquid Interfaces. ChemElectroChem 2022. [DOI: 10.1002/celc.202200359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Toshinari Takami
- Kanazawa University Graduate School of Natural Science and Technology: Kanazawa Daigaku Daigakuin Shizen Kagaku Kenkyuka Division of Material Chemistry JAPAN
| | - Shohei Kanai
- Kanazawa University Graduate School of Natural Science and Technology: Kanazawa Daigaku Daigakuin Shizen Kagaku Kenkyuka Division of Material Chemistry JAPAN
| | - Yoshio Nishiyama
- Kanazawa University Graduate School of Natural Science and Technology: Kanazawa Daigaku Daigakuin Shizen Kagaku Kenkyuka Division of Material Chemistry JAPAN
| | - Hye Jin Lee
- Kyungpook National University Department of Chemistry and Green-Nano Materials Research Center KOREA, REPUBLIC OF
| | - Hirohisa Nagatani
- Kanazawa University Faculty of Chemistry, Institute of Science and Engineering Kakuma 920-1192 Kanazawa JAPAN
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Interfacial association of ferritin with anionic fluorescent probe at the 1,2-dichloroethane/water interface. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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4
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Ghosh S, Roy A, Singhania A, Chatterjee S, Swarnakar S, Fujita D, Bandyopadhyay A. In-vivo & in-vitro toxicity test of molecularly engineered PCMS: A potential drug for wireless remote controlled treatment. Toxicol Rep 2018; 5:1044-1052. [PMID: 30406021 PMCID: PMC6214879 DOI: 10.1016/j.toxrep.2018.10.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 05/08/2018] [Accepted: 10/18/2018] [Indexed: 11/24/2022] Open
Abstract
PC, PCM, PCS, and PCMS are our designed & synthesized ∼8 nm PAMAM dendrimer (P) -based organic supramolecular systems, for example, PCMS has 32 molecular motors (M), 4 pH sensors (S) and 2 multi-level molecular electronic switches (C). We have reported earlier following a preliminary in-vitro test that the synthesized PCMS can selectively target cancer cell nucleotides if triggered wirelessly by an electromagnetic pulse. Here to further verify its drug potential, we have studied the preliminary efficacy, toxicity, and pharmacokinetics of P derivatives (PC, PCM, PCMS) in-vivo and in-vitro. We used ethanol-induced gastric inflammation model and cultured human gastric epithelial cells AGS to examine to the toxicity of PAMAM dendrimers cell permeability and toxicity, in (a) the cultured human gastric epithelium cells (AGS), and in (b) the gastric ulcer mice model. Here we report that the toxicity of PAMAM dendrimer (>G3.5) P can be reduced by adding C, M and S. Gastric ulcer is the primary stage of the manifestation of acute inflammation, even gastric epithelial cancer. Ethanol causes ulceration (ulcer index 30), thus upregulates both pro and active MMP-9. A 50 μl PCMS dose prior to ethanol administration reduces ulceration by ∼80% and downregulates MMP-9 and prevents oxidative damages of gastric tissue by ECM remodeling. Alcohol's inflammation of mouse stomach causes up-regulation of both pro and active MMP-9, resulting in oxidative damages of gastric tissue by ECM remodeling. PCMS in particular dose window reverses & alters ECM remodeling, thus, neutralizing alcohol-induced inflammation & generation of ROS.
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Key Words
- AGS, human caucasian gastric adenocarcinoma
- CEES, combined excitation emission spectroscopy
- CNDP, critical nanoscale design parameters
- Dendrimer toxicity
- G, generation
- Gastric ulcer
- Inflammation
- Matrix metalloproteinase
- Nonchemical drug
- P, PAMAM
- PAMAM, poly(amido)amine
- PC, PAMAM-controller
- PCM, PAMAM controller-motor
- PCMS, PAMAM-controller-motor-sensor
- ROS, radical oxygen species
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Affiliation(s)
- Subrata Ghosh
- National Institute for Materials Science (NIMS), Nano Characterization Unit, Advanced Key Technologies Division, 1-2-1 Sengen, Tsukuba, Japan
- CSIR-North East Institute of Science & Technology, Natural Product Chemistry Group, Chemical Science & Technology Division, Jorhat, 785006, Assam, India
| | - Anirban Roy
- Cancer Biology and Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Kol-700032, West Bengal, India
| | - Anup Singhania
- CSIR-North East Institute of Science & Technology, Natural Product Chemistry Group, Chemical Science & Technology Division, Jorhat, 785006, Assam, India
| | - Somnath Chatterjee
- Cancer Biology and Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Kol-700032, West Bengal, India
| | - Snehasikta Swarnakar
- Cancer Biology and Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Kol-700032, West Bengal, India
| | - Daisuke Fujita
- National Institute for Materials Science (NIMS), Nano Characterization Unit, Advanced Key Technologies Division, 1-2-1 Sengen, Tsukuba, Japan
| | - Anirban Bandyopadhyay
- National Institute for Materials Science (NIMS), Nano Characterization Unit, Advanced Key Technologies Division, 1-2-1 Sengen, Tsukuba, Japan
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Collins MC, Hébrant M, Herzog G. Ion transfer at polarised liquid-liquid interfaces modified with adsorbed silica nanoparticles. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.06.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Nagatani H, Fujisawa M, Imura H. Mechanistic Analysis of Ion Association between Dendrigraft Poly-l-lysine and 8-Anilino-1-naphthalenesulfonate at Liquid|Liquid Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3237-3243. [PMID: 29457910 DOI: 10.1021/acs.langmuir.8b00131] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Molecular association between biocompatible dendritic polymers, dendrigraft poly-l-lysines (DGLs), and an anionic fluorescent probe, 8-anilino-1-naphthalenesulfonate (ANS-), was studied at the polarized water|1,2-dichloroethane (DCE) interface. The fluorescence intensity of ANS measured in aqueous solution was enhanced by the coexistence of DGLs over a wide pH range (2 < pH < 10), where ANS and DGL exist as a monoanionic form and a polycation, respectively. The voltammetric responses indicated that the positively charged DGLs were adsorbed at the water|DCE interface, whereas ANS- was transferred across the interface accompanied by the adsorption process. The interfacial behavior of the DGL-ANS associates was analyzed by potential-modulated fluorescence (PMF) spectroscopy. The PMF results demonstrated that the ion association between DGLs and ANS at the water|DCE interface is strongly affected by the applied potential and the dendritic generation of DGL. By applying appropriate potentials, the ANS anion was dissociated from its ion associate with DGLs at the interface and transferred into the organic phase, whereas DGLs remained in the aqueous phase. The Gibbs free energy of ion association (Δ GD···ANS) was estimated for the second-fourth generation DGLs (DGL-G2-G4) and the G4 polyamidoamine (PAMAM) dendrimer as a control. The highest stability of the DGL-G4-ANS associate manifested itself through Δ GD···ANS: DGL-G4-ANS (>G4 PAMAM dendrimer-ANS) > DGL-G3-ANS > DGL-G2-ANS. The results elucidated the efficient anion-binding ability of higher generation DGLs and its potential dependence at the liquid|liquid interface.
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Yamamoto S, Nagatani H, Imura H. Potential-Induced Aggregation of Anionic Porphyrins at Liquid|Liquid Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10134-10142. [PMID: 28578576 DOI: 10.1021/acs.langmuir.7b01422] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The adsorption and self-aggregation of anionic porphyrins were studied at the polarized water|1,2-dichloroethane (DCE) interface by polarization-modulation total internal reflection fluorescence (PM-TIRF) spectroscopy. 5,10,15,20-Tetrakis(4-sulfonatophenyl)porphyrin diacid (H4TPPS2-) and protoporphyrin IX (H2PP2-) exhibited high surface activities at the interface. The selective excitation of interfacial species in PM-TIRF measurements elucidated the potential-induced aggregation mechanism of the porphyrins. The J-aggregates of H4TPPS2- were reversibly formed only at the water|DCE interface by applying appropriate potentials even when the porphyrins exist as monomers in the aqueous and organic solutions. In the H2PP2- system, the slow aggregation process was found in the negative potential region. The spectral characteristics and the signal phase of PM-TIRF indicated that the H2PP2- monomers were adsorbed with relatively standing orientation and that the long axis of the J-aggregates was nearly in plane of the interface. H2PP2- was also investigated at the biomimetic phospholipid-adsorbed water|DCE interface. The competitive adsorption of neutral glycerophospholipids effectively inhibited the potential-dependent adsorption and interfacial aggregation processes of H2PP2-. The results demonstrated that the aggregation state of the charged species can reversibly be controlled at liquid|liquid interfaces as a function of externally applied potential.
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Affiliation(s)
- Sho Yamamoto
- Division of Material Chemistry, Graduate School of Natural Science and Technology, and ‡Faculty of Chemistry, Institute of Science and Engineering, Kanazawa University , Kakuma, Kanazawa 920-1192, Japan
| | - Hirohisa Nagatani
- Division of Material Chemistry, Graduate School of Natural Science and Technology, and ‡Faculty of Chemistry, Institute of Science and Engineering, Kanazawa University , Kakuma, Kanazawa 920-1192, Japan
| | - Hisanori Imura
- Division of Material Chemistry, Graduate School of Natural Science and Technology, and ‡Faculty of Chemistry, Institute of Science and Engineering, Kanazawa University , Kakuma, Kanazawa 920-1192, Japan
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8
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Sakae H, Fujisawa M, Nagatani H, Imura H. Molecular association between flavin derivatives and dendritic polymers at the water|1,2-dichloroethane interface. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.10.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Saldías C, Méndez-López M, Saavedra-Torres M, Pereira A, Rojas MA, Avila-Salas F, Bonardd S, Pino-Orellana M, Saldías S, Quezada C, Leiva A, Radic D. Interfacial behavior of PAMAM-PCL dendrimers and in situ spontaneous formation of gold nanoparticles at the toluene-water and air-water interfaces: Experimental and theoretical studies. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.09.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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10
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Ion transfer and adsorption behavior of ionizable drugs affected by PAMAM dendrimers at the water|1,2- dichloroethane interface. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.01.122] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Poltorak L, Morakchi K, Herzog G, Walcarius A. Electrochemical characterization of liquid-liquid micro-interfaces modified with mesoporous silica. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.01.129] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Uematsu K, Maruyama C, Hamano Y, Katano H. Ion-transfer voltammetry of streptothricin antibiotics with differently sized lysine oligomers at a nitrobenzene | water interface. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Nagatani H, Sakae H, Torikai T, Sagara T, Imura H. Photoinduced Electron Transfer of PAMAM Dendrimer-Zinc(II) Porphyrin Associates at Polarized Liquid|Liquid Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:6237-6244. [PMID: 25989445 DOI: 10.1021/acs.langmuir.5b01165] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The heterogeneous photoinduced electron-transfer reaction of the ion associates between NH2-terminated polyamidoamine (PAMAM) dendrimers and 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrinato zinc(II) (ZnTPPS(4-)) was studied at the polarized water|1,2-dichloroethane (DCE) interface. The positive photocurrent arising from the photoreduction of ZnTPPS(4-) by a lipophilic quencher, decamethylferrocene, in the interfacial region was significantly enhanced by the ion association with the PAMAM dendrimers. The photocurrent response of the dendrimer-ZnTPPS(4-) associates was dependent on the pH condition and on the generation of dendrimer. A few cationic additives such as polyallylamine and n-octyltrimethyammonium were also examined as alternatives to the PAMAM dendrimer, but the magnitude of the photocurrent enhancement was rather small. The high photoreactivity of the dendrimer-ZnTPPS(4-) associates was interpreted mainly as a result of the high interfacial concentration of photoreactive porphyrin units associated stably with the dendrimer which was preferably adsorbed at the polarized water|DCE interface. The photochemical data observed in the second and fourth generation PAMAM dendrimer systems demonstrated that the higher generation dendrimer which can incorporate a porphyrin molecule more completely in the interior is less efficient for the photocurrent enhancement at the interface. These results indicated that the photoreactivity of ionic reactant at a polarized liquid|liquid interface can readily be modified via ion association with the charged dendrimer.
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Affiliation(s)
- Hirohisa Nagatani
- †Faculty of Chemistry, Institute of Science and Engineering and ‡Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- §Department of Materials Engineering and Molecular Science, Graduate School of Science and Technology and ∥Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo, Nagasaki 852-8521, Japan
| | - Hiroki Sakae
- †Faculty of Chemistry, Institute of Science and Engineering and ‡Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- §Department of Materials Engineering and Molecular Science, Graduate School of Science and Technology and ∥Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo, Nagasaki 852-8521, Japan
| | - Taishi Torikai
- †Faculty of Chemistry, Institute of Science and Engineering and ‡Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- §Department of Materials Engineering and Molecular Science, Graduate School of Science and Technology and ∥Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo, Nagasaki 852-8521, Japan
| | - Takamasa Sagara
- †Faculty of Chemistry, Institute of Science and Engineering and ‡Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- §Department of Materials Engineering and Molecular Science, Graduate School of Science and Technology and ∥Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo, Nagasaki 852-8521, Japan
| | - Hisanori Imura
- †Faculty of Chemistry, Institute of Science and Engineering and ‡Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- §Department of Materials Engineering and Molecular Science, Graduate School of Science and Technology and ∥Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo, Nagasaki 852-8521, Japan
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Zhang L, Jin Q, Lv K, Qin L, Liu M. Enantioselective recognition of a fluorescence-labeled phenylalanine by self-assembled chiral nanostructures. Chem Commun (Camb) 2015; 51:4234-6. [DOI: 10.1039/c5cc00261c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Self-assembled chiral nanostructures formed by a pyridylpyrazole-conjugated l-glutamide showed enantioselectivity for a fluorescence labeled chiral amino acid.
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Affiliation(s)
- Li Zhang
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - Qingxian Jin
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - Kai Lv
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - Long Qin
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - Minghua Liu
- Beijing National Laboratory for Molecular Science
- CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
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15
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Sakae H, Nagatani H, Morita K, Imura H. Spectroelectrochemical characterization of dendrimer-porphyrin associates at polarized liquid|liquid interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:937-945. [PMID: 24397699 DOI: 10.1021/la404079m] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Molecular encapsulation of anionic porphyrins in NH2-terminated polyamidoamine (PAMAM) dendrimers and the interfacial behavior of the dendrimer-porphyrin associates were studied at the polarized water|1,2-dichloroethane (DCE) interface. Formation of the ion associates was significantly dependent on the pH condition and on generation of dendrimers. 5,10,15,20-Tetrakis(4-sulfonatophenyl)porphyrin (ZnTPPS(4-)) associated with the positively charged fourth-generation (G4) PAMAM dendrimer was highly stabilized in acidic aqueous solution without protolytic demetalation in a wide range of pH values (pH > 2). In contrast to the zinc(II) complex, the free base porphyrin (H2TPPS(4-)) was readily protonated under acidic conditions even in the presence of the dendrimers. In addition, the J-aggregates of diprotonated species, (H4TPPS(2-))n, were preferably formed on the dendrimer. The interfacial mechanism of the dendrimer-porphyrin associates was analyzed in detail by potential-modulated fluorescence (PMF) spectroscopy. PMF results indicated that the dendrimers incorporating porphyrin molecules were transferred across the positively polarized water|DCE interface via adsorption step, whereas the transfer responses of the porphyrin ions released from the dendrimers were observed at negatively polarized conditions. A negative shift of the transfer potential of porphyrin ions compared to the intrinsic transfer potential was apparently observed for each ion association system. The ion association stability between the dendrimer and the porphyrin molecules could be estimated from a negative shift of the transfer potential. ZnTPPS(4-) exhibited relatively strong interaction with the higher generation dendrimer, whereas H2TPPS(4-) was less effectively associated with the dendrimers.
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Affiliation(s)
- Hiroki Sakae
- Division of Material Sciences, Graduate School of Natural Science and Technology and ‡Faculty of Chemistry, Institute of Science and Engineering, Kanazawa University , Kakuma, Kanazawa 920-1192, Japan
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16
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Lee H, Ooya T. 19F-NMR, 1H-NMR, and Fluorescence Studies of Interaction between 5-Fluorouracil and Polyglycerol Dendrimers. J Phys Chem B 2012; 116:12263-7. [DOI: 10.1021/jp307710b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Haejoo Lee
- Graduate School of Engineering, Kobe University, 1-1, Rokkoudai-cho, Nada-ku, Kobe
657-8501, Japan
| | - Tooru Ooya
- Graduate School of Engineering, Kobe University, 1-1, Rokkoudai-cho, Nada-ku, Kobe
657-8501, Japan
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17
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Perez-Tejeda P, Prado-Gotor R, Grueso EM. Electrochemiluminescence of the [Ru(bpy)3]2+ Complex: The Coreactant Effect of PAMAM Dendrimers in an Aqueous Medium. Inorg Chem 2012; 51:10825-31. [DOI: 10.1021/ic301239x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- P. Perez-Tejeda
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, c/Profesor García González s/n, 41012 Seville, Spain
| | - R. Prado-Gotor
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, c/Profesor García González s/n, 41012 Seville, Spain
| | - E. M. Grueso
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, c/Profesor García González s/n, 41012 Seville, Spain
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Herzog G, Flynn S, Johnson C, Arrigan DW. Electroanalytical Behavior of Poly-l-Lysine Dendrigrafts at the Interface between Two Immiscible Electrolyte Solutions. Anal Chem 2012; 84:5693-9. [DOI: 10.1021/ac300856w] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Grégoire Herzog
- Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland
| | - Shane Flynn
- Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland
| | - Colm Johnson
- Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland
| | - Damien W.M. Arrigan
- Nanochemistry Research Institute,
Department of Chemistry, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
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Affiliation(s)
- Jingjing Hu
- CAS Key Laboratory of Soft Matter
Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People’s
Republic of China
| | - Tongwen Xu
- CAS Key Laboratory of Soft Matter
Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People’s
Republic of China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory
Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, People’s Republic of China
- Shanghai
Key Laboratory of Magnetic
Resonance, Department of Physics, East China Normal University, Shanghai, 200062, P.R.China
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