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Patel A, Ray D, Parekh P, Kuperkar K, Bharatiya B, Aswal VK, Bahadur P, Patel VI. Self-assembly modulation in star block copolymers by amphiphilic diol: A scattering insight. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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2
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Chakrabarti C, Khan Pathan S, Deep Punetha V, Pillai SA. Interaction of Tetronics® micelles with stimuli and additives and a commanding aspect towards drug delivery: An overview. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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Alasmary FA, Kenawy E, El‐Deeb NM, Kamoun EA, Khattab SA, Karami AM, Cinelli P, Azaam MM. Synthesis, antimicrobial and anticancer activities of Tetronic 1107 Schiff bases. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fatmah Ali Alasmary
- Department of Chemistry, College of Science King Saud University Riyadh Saudi Arabia
| | - El‐Refaie Kenawy
- Polymer Research Group, Chemistry Department, Faculty of Science Tanta University Tanta Egypt
| | - Nehal M. El‐Deeb
- Biopharmaceutical Products Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI) City of Scientific Research and Technological Applications (SRTA‐City) Alexandria New Borg El‐Arab City Egypt
- Pharmaceutical and Fermentation Industries Development Center City of Scientific Research and Technological Applications (SRTA‐City) Alexandria New Borg El‐Arab City Egypt
| | - Elbadawy A. Kamoun
- Polymeric Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI) City of Scientific Research and Technological Applications (SRTA‐City) Alexandria New Borg El‐Arab City Egypt
- Nanotechnology Research Center (NTRC) The British University in Egypt (BUE) El‐Sherouk City Cairo Egypt
| | - Samar A. Khattab
- Polymer Research Group, Chemistry Department, Faculty of Science Tanta University Tanta Egypt
- Department of Chemistry University of Helsinki Helsinki Finland
| | | | - Patrizia Cinelli
- Department of Civil and Industrial Engineering University of Pisa Pisa Italy
| | - Mohamed M. Azaam
- Polymer Research Group, Chemistry Department, Faculty of Science Tanta University Tanta Egypt
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Patel D, Ray D, Aswal VK, Kuperkar K, Bahadur P. Micellar assembly leading to structural growth/transition in normal and reverse Tetronics® in single and mixed solution environment. SOFT MATTER 2022; 18:4543-4553. [PMID: 35674288 DOI: 10.1039/d2sm00321j] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This study scrutinizes the self-association of ethylene oxide (EO)-propylene oxide (PO)-based star-shaped block copolymers as normal Tetronic® (T904) and reverse Tetronic® R (T90R4) with varying molecular characteristics and different hydrophilic-hydrophobic ratios in an aqueous solution environment. These thermo-responsive solutions appear clear, transparent or bluish up to 10%w/v, which anticipated the probable transition of unimers to spherical or ellipsoidal micelles which is complemented by scattering experiments. In a single-solution environment, 10%w/v T904 formed star-shaped micelles at ambient temperature and exhibited a micellar growth/transition with temperature ageing. While 10%w/v T90R4 exists as unimers or a Gaussian coil over a wide range of temperature. Very interestingly, close to the cloud point (CP) flower-shaped spherical and ellipsoidal micelles were formed. A similar proposed micellar scheme was also examined for mixed systems T904 : T90R4 in varying ratios (1 : 0, 3 : 1, 1 : 1, 1 : 3 and 0 : 1) giving an account to the solution behavior of the mixtures. An amalgamation of dynamic light scattering (DLS) and small-angle neutron scattering (SANS) techniques achieved the thorough extraction of the structural parameters of the micellar system. The hydrodynamic diameter (Dh) of the micelles with temperature variation was evaluated from dynamic light scattering (DLS) while the structure factor of the micelles was found by employing small-angle neutron scattering (SANS). Furthermore, the single and mixed micellar systems were quantitatively and qualitatively examined for anticancer drug solubilization using UV-vis spectroscopy for their superior use as potential nanocargos.
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Affiliation(s)
- Dhruvi Patel
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat-395 007, Gujarat, India.
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai-400 085, Maharashtra, India
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai-400 085, Maharashtra, India
| | - Ketan Kuperkar
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat-395 007, Gujarat, India.
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University (VNSGU), Surat-395 007, Gujarat, India
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Chakrabarti C, Pillai SA, Ray D, Aswal VK, Kumar S. Aggregation behaviour of star block copolymers T1304 and T1307 in the presence of toluene, phenol and methyl phenols: A DLS and SANS study. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128132] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Patel A, Ray D, Khimani M, Parikh JK, Parekh P, Patel VI, Aswal VK, Bahadur P. Influence of Surfynol® 104 on aggregation behaviour of Triton X-100 micelles. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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7
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Patel D, Ray D, Kuperkar K, Aswal VK, Bahadur P. Parabens induced spherical micelle to polymersome transition in thermo-responsive amphiphilic linear and star-shaped EO-PO block copolymers. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113897] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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8
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Kaur P, Khullar P, Singh Bakshi M. Multifunctional photo-physiochemical properties of tetronic 304 in aqueous phase: Mechanistic aspects of Au(III) reduction into Au(0). J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Patel D, Ray D, Kuperkar K, Pal H, Aswal VK, Bahadur P. Solubilization, micellar transition and biocidal assay of loaded antioxidants in Tetronic® 1304 micelles. POLYM INT 2020. [DOI: 10.1002/pi.5962] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Dhruvi Patel
- Applied Chemistry Department Sardar Vallabhbhai National Institute of Technology (SVNIT) Surat India
| | - Debes Ray
- Solid State Physics Division Bhabha Atomic Research Centre Mumbai India
| | - Ketan Kuperkar
- Applied Chemistry Department Sardar Vallabhbhai National Institute of Technology (SVNIT) Surat India
| | - Haridas Pal
- Analytical Division Bhabha Atomic Research Centre Mumbai India
| | - Vinod K Aswal
- Solid State Physics Division Bhabha Atomic Research Centre Mumbai India
| | - Pratap Bahadur
- Department of Chemistry Veer Narmad South Gujarat University (VNSGU) Surat India
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10
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Tomšič M, Cerar J, Jamnik A. Supramolecular structure vs. rheological properties: 1,4–Butanediol at room and elevated temperatures. J Colloid Interface Sci 2019; 557:328-335. [DOI: 10.1016/j.jcis.2019.09.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/03/2019] [Accepted: 09/05/2019] [Indexed: 01/14/2023]
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11
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Pillai SA, Pal H, Ray D, Aswal VK, Bahadur P. Ethanol and 2, 2, 2- trifluoroethanol modified supramolecular assemblies of star block copolymers: A SANS and fluorescence study. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Pillai SA, Lage EV, Casas M, Sández-Macho I, Wang MR, Chen LJ, Bahadur P. A comparative study on the effect of structural variations of co-solvent on the Tetronic® micelles with widely different hydrophobicity. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.02.138] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Nuruzzaman M, Liu Y, Rahman MM, Naidu R, Dharmarajan R, Shon HK, Woo YC. Core-Shell Interface-Oriented Synthesis of Bowl-Structured Hollow Silica Nanospheres Using Self-Assembled ABC Triblock Copolymeric Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13584-13596. [PMID: 30352161 DOI: 10.1021/acs.langmuir.8b00792] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Hollow porous silica nanospheres (HSNs) are emerging classes of cutting-edge nanostructured materials. They have elicited much interest as carriers of active molecule delivery due to their amorphous chemical structure, nontoxic nature, and biocompatibility. Structural development with hierarchical morphology is mostly required to obtain the desired performance. In this context, large through-holes or pore openings on shells are desired so that the postsynthesis loading of active-molecule onto HSNs via a simple immersion method can be facilitated. This study reports the synthesis of HSNs with large through-holes or pore openings on shells, which are subsequently termed bowl-structured hollow porous silica nanospheres (BHSNs). The synthesis of BHSNs was mediated by the core-shell interfaces of the core-shell corona-structured micelles obtained from a commercially available ABC triblock copolymer (polystyrene- b-poly(2-vinylpyridine)- b-poly(ethylene oxide) (PS-P2VP-PEO)). In this synthesis process, polymer@SiO2 composite structure was formed because of the deposition of silica (SiO2) on the micelles' core. The P2VP block played a significant role in the hydrolysis and condensation of the silica precursor, i.e., tetraethylorthosilicate (TEOS) and then maintaining the shell's growth. The PS core of the micelles built the void spaces. Transmission electron microscopy (TEM) images revealed a spherical hollow structure with an average particle size of 41.87 ± 3.28 nm. The average diameter of void spaces was 21.71 ± 1.22 nm, and the shell thickness was 10.17 ± 1.68 nm. According to the TEM image analysis, the average large pore was determined to be 15.95 nm. Scanning electron microscopy (SEM) images further confirmed the presence of large single pores or openings in shells. These were formed as a result of the accumulated ethanol on the PS core acting to prevent the growth of silica.
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Affiliation(s)
- Md Nuruzzaman
- Global Centre for Environmental Remediation (GCER), Faculty of Science , The University of Newcastle , Callaghan , NSW 2308 , Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building , The University of Newcastle , Callaghan , NSW 2308 , Australia
| | - Yanju Liu
- Global Centre for Environmental Remediation (GCER), Faculty of Science , The University of Newcastle , Callaghan , NSW 2308 , Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building , The University of Newcastle , Callaghan , NSW 2308 , Australia
| | - Mohammad Mahmudur Rahman
- Global Centre for Environmental Remediation (GCER), Faculty of Science , The University of Newcastle , Callaghan , NSW 2308 , Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building , The University of Newcastle , Callaghan , NSW 2308 , Australia
| | - Ravi Naidu
- Global Centre for Environmental Remediation (GCER), Faculty of Science , The University of Newcastle , Callaghan , NSW 2308 , Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building , The University of Newcastle , Callaghan , NSW 2308 , Australia
| | - Rajarathnam Dharmarajan
- Global Centre for Environmental Remediation (GCER), Faculty of Science , The University of Newcastle , Callaghan , NSW 2308 , Australia
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building , The University of Newcastle , Callaghan , NSW 2308 , Australia
| | - Ho Kyong Shon
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building , The University of Newcastle , Callaghan , NSW 2308 , Australia
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering , University of Technology Sydney (UTS) , P.O. Box 123, 15 Broadway , Sydney , NSW 2007 , Australia
| | - Yun Chul Woo
- Department of Land, Water and Environment Research , Korea Institute of Civil Engineering and Building Technology (KICT) , 283, Goyangdae-Ro, Ilsanseo-Gu , Goyang-Si , Gyeonggi-Do 411-712 , Republic of Korea
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Synergy of surface-treated nanoparticle and anionic-nonionic surfactant on stabilization of natural gas foams. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.04.046] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Vyas B, Pillai SA, Bahadur A, Bahadur P. A Comparative Study on Micellar and Solubilizing Behavior of Three EO-PO Based Star Block Copolymers Varying in Hydrophobicity and Their Application for the In Vitro Release of Anticancer Drugs. Polymers (Basel) 2018; 10:polym10010076. [PMID: 30966111 PMCID: PMC6414926 DOI: 10.3390/polym10010076] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 01/01/2018] [Accepted: 01/13/2018] [Indexed: 11/18/2022] Open
Abstract
The temperature and pH dependent self-assembly of three star shaped ethylene oxide-propylene oxide (EO-PO) block copolymers (Tetronics® 304, 904 and 908) with widely different hydrophobicity was examined in aqueous solutions. Physico-chemical methods viz. viscosity, cloud point, solubilization along with thermal, scattering and spectral techniques shows strongly temperature and salt dependent solution behavior. T304 possessing low molecular weight did not form micelles; moderately hydrophilic T904 remained as micelles at ambient temperature and showed micellar growth while very hydrophilic T908 formed micelles at elevated temperatures. The surface activity/micellization/solubilization power was favored in the presence of salt. The copolymers turn more hydrophilic in acidic pH due to protonation of central ethylene diamine moiety that hinders micelle formation. The solubilization of a model insoluble azo dye 1-(o-Tolylazo)-2-naphthol (Orange OT) and hydrophobic drugs (quercetin and curcumin) for copolymer solutions in aqueous and salt solutions are also reported. Among the three copolymers, T904 showed maximum solubility of dye and drugs, hence the in vitro release of drugs from T904 micelles was estimated and the effect on cytotoxicity of loading the drugs in T904 micelles was compared with the cytotoxicity of free drugs on the CHO-K1 cells. The results from the present work provide a better insight in selection of Tetronics® for their application in different therapeutic applications.
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Affiliation(s)
- Bijal Vyas
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, India.
| | - Sadafara A Pillai
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, India.
| | - Anita Bahadur
- Department of Zoology, PT Sarvajanik College of Science, Surat 395001, India.
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, India.
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Lage EV, Pillai SA, Pal H, Bahadur A, Casas M, Sández-Macho I, Bahadur P. Urea induced changes in self-assembly and aggregate microstructures of amphiphilic star block copolymers with widely different hydrophobicity. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Tuning the self-assembly of EO-PO block copolymers and quercetin solubilization in the presence of some common pharmacuetical excipients: A comparative study on a linear triblock and a starblock copolymer. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.06.035] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Glucose triggered enhanced solubilisation, release and cytotoxicity of poorly water soluble anti-cancer drugs fromT1307 micelles. J Biotechnol 2017. [DOI: 10.1016/j.jbiotec.2017.06.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Thermal and scattering studies of Tetronic® 1304 micelles in the presence of industrially important glycols, their oligomers, cellosolves, carbitols, ethers and esters. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.07.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Glycine elicited self-assembly of amphiphilic star block copolymers with contradistinct hydrophobicities. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.06.038] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Gong H, Xu L, Zhu T, Xu G, Shi X, Dong M, Li Y. Interactions between pluronic block polyether and CTAB at air/water interface: interfacial dilational rheology study. Colloid Polym Sci 2016. [DOI: 10.1007/s00396-016-3919-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Mixed aggregates based on tetronic-fluorinated surfactants for selective oils capture. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.02.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Bakshi MS. Colloidal micelles of block copolymers as nanoreactors, templates for gold nanoparticles, and vehicles for biomedical applications. Adv Colloid Interface Sci 2014; 213:1-20. [PMID: 25262452 DOI: 10.1016/j.cis.2014.08.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 07/29/2014] [Accepted: 08/07/2014] [Indexed: 12/17/2022]
Abstract
Target drug delivery methodology is becoming increasingly important to overcome the shortcomings of conventional drug delivery absorption method. It improves the action time with uniform distribution and poses minimum side effects, but is usually difficult to design to achieve the desire results. Economically favorable, environment friendly, multifunctional, and easy to design, hybrid nanomaterials have demonstrated their enormous potential as target drug delivery vehicles. A combination of both micelles and nanoparticles makes them fine target delivery vehicles in a variety of biological applications where precision is primarily required to achieve the desired results as in the case of cytotoxicity of cancer cells, chemotherapy, and computed tomography guided radiation therapy.
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Affiliation(s)
- Mandeep Singh Bakshi
- Department of Chemistry, Wilfrid Laurier University, Science Building, 75 University Ave. W., Waterloo, ON N2L 3C5, Canada.
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Moretton MA, Cohen L, Lepera L, Bernabeu E, Taira C, Höcht C, Chiappetta DA. Enhanced oral bioavailability of nevirapine within micellar nanocarriers compared with Viramune ®. Colloids Surf B Biointerfaces 2014; 122:56-65. [DOI: 10.1016/j.colsurfb.2014.06.046] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 05/25/2014] [Accepted: 06/20/2014] [Indexed: 01/28/2023]
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Aggregation behavior of X-shaped branched block copolymers at the air/water interface: effect of block sequence and temperature. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3392-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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27
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Xu L, Xu G, Gong H, Dong M, Li Y, Zhou Y. Foam properties and stabilizing mechanism of sodium fatty alcohol polyoxyethylene ether sulfate-welan gum composite systems. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.05.031] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Singh V, Khullar P, Dave PN, Kaura A, Bakshi MS, Kaur G. pH and thermo-responsive tetronic micelles for the synthesis of gold nanoparticles: effect of physiochemical aspects of tetronics. Phys Chem Chem Phys 2014; 16:4728-39. [DOI: 10.1039/c3cp55079f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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29
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Cosolvent effect on the aggregation of amphipathic highly branched diblock polyether in aqueous solution. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0307-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Effect of inorganic salts on the aggregation behavior of branched block polyether at air/water and n-heptane/water interfaces. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-3013-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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De Spiegeleer B, Boonen J, Malysheva SV, Mavungu JDD, De Saeger S, Roche N, Blondeel P, Taevernier L, Veryser L. Skin penetration enhancing properties of the plant N-alkylamide spilanthol. JOURNAL OF ETHNOPHARMACOLOGY 2013; 148:117-125. [PMID: 23583736 DOI: 10.1016/j.jep.2013.03.076] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Revised: 02/21/2013] [Accepted: 03/03/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Plants are often used for skin diseases in different ethnopharmacological systems. Local and systemic effects of topically applied compounds can be significantly increased by plant constituents having skin penetration enhancers. MATERIALS AND METHODS In this study, we examined the proposed penetration enhancing properties of spilanthol, an N-alkylamide abundantly present in several Asteraceae plants like Spilanthes acmella L., on three model drugs (caffeine, testosterone and ibuprofen). Moreover, as plants are frequently contaminated with toxic environmental substances, the mutual influence on the transdermal behavior between spilanthol and six model mycotoxins (aflatoxin B1, ochratoxin A, fumonisin B1, citrinin, zearalenone, T-2 toxin) was investigated. RESULTS Spilanthol exhibits component and concentration dependent penetration enhancing effects. No significant penetration enhancing effect for ibuprofen has been observed, but with increasing spilanthol concentration (from 0 up to 1w/V%), the permeability of caffeine increased, resulting in an enhancing ratio (ER) of 4.60. For testosterone, a maximal penetration enhancing concentration of 0.5% spilanthol was found (ER=4.13). Next to its beneficial applicability to increase local as well as systemic pharmacological effects of dermally co-administrated drug, this N-alkylamide negatively influences human health risk if spilanthol containing formulations are polluted with mycotoxins: the presence of spilanthol (0.3w/V%) induced a significant increase of permeability coefficient Kp of five investigated mycotoxins, with ER values ranging between 1.57 and 6.37. On the other hand, mycotoxins themselves do not significantly influence the transdermal behavior of spilanthol. CONCLUSIONS The existence of a significant mutual influence of compounds towards skin penetration should always be considered during the development or as part of the functional quality evaluation of topical products.
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Affiliation(s)
- Bart De Spiegeleer
- Drug Quality and Registration (DruQuaR) group, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000 Ghent, Belgium.
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Jiang R, Wang Y, Yang Y, Lin C. Equilibrium and Dynamic Surface Tension of Carboxymethylchitosan and Alkyl Trimethylammonium Bromide Mixtures. J DISPER SCI TECHNOL 2013. [DOI: 10.1080/01932691.2011.646629] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Gong H, Xu G, Liu T, Xu L, Zhai X, Zhang J, Lv X. Aggregation behaviors of PEO-PPO-ph-PPO-PEO and PPO-PEO-ph-PEO-PPO at an air/water interface: experimental study and molecular dynamics simulation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:13590-13600. [PMID: 22954368 DOI: 10.1021/la303430c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The block polyethers PEO-PPO-ph-PPO-PEO (BPE) and PPO-PEO-ph-PEO-PPO (BEP) are synthesized by anionic polymerization using bisphenol A as initiator. Compared with Pluronic P123, the aggregation behaviors of BPE and BEP at an air/water interface are investigated by the surface tension and dilational viscoelasticity. The molecular construction can influence the efficiency and effectiveness of block polyethers in decreasing surface tension. BPE has the most efficient ability to decrease surface tension of water among the three block polyethers. The maximum surface excess concentration (Γ(max)) of BPE is larger than that of BEP or P123. Moreover, the dilational modulus of BPE is almost the same as that of P123, but much larger than that of BEP. The molecular dynamics simulation provides the conformational variations of block polyethers at the air/water interface.
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Affiliation(s)
- Houjian Gong
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, P. R. China
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Dispersion of carbon nanotubes by the branched block copolymer Tetronic 1107 in an alcohol–water solution. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2776-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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