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Brito J, Shah PP, Aliakseyeu A, Sukhishvili SA. Effect of polyacid architecture and polycation molecular weight on lateral diffusion within multilayer films. J Chem Phys 2024; 160:121101. [PMID: 38530006 DOI: 10.1063/5.0190377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 03/12/2024] [Indexed: 03/27/2024] Open
Abstract
Despite the potential use of polyelectrolyte multilayers for biomedical, separation, and energy applications, their dynamic properties are not sufficiently understood. In this work, center-of-mass diffusion of a weak polyacid-poly(methacrylic acid) (PMAA) of linear and 8-arm architecture (L-PMAA and 8-PMAA, respectively) and matched molecular weight-was studied in layer-by-layer (LbL) assemblies with poly(diallyldimethylammonium) chloride (PDADMAC) of varied molecular weight. The film deposition at low-salt, acidic conditions when PMAA was only partially ionized yielded thicker, more diffused layers with shorter PDADMAC chains, and bilayer thickness decreased for multilayers constructed with longer PDADMAC. The molecular architecture of PMAA had a weak effect on film growth, with bilayer thickness being ∼20% larger for L-PMAA for the films constructed with the shortest PDADMAC (35 kDa) and identical film growth for L-PMAA and 8-PMAA with the longest PDADMAC (300 kDa). The exposure of the multilayer films to 0.2M NaCl triggered a reduction in PMAA ionization and significant lateral diffusivity of fluorescently labeled PMAA molecules (PMAA*), with diffusion coefficients D ranging from 10-13 to 10-12 cm2/s, as determined by the fluorescence recovery after photobleaching technique. For all the films, polymer mobility was higher for star polyacids as compared to their linear counterparts, and the dependence of PMAA diffusion coefficient D on PDADMAC molecular weight (D ∼ M-n) was relatively weak (n < 0.6). However, 8-PMAA demonstrated an approximately doubled power exponent compared to the L-PMAA chains, suggesting a stronger effect of the molecular connectivity of the partner polycation molecules on the diffusion of star polyelectrolytes.
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Affiliation(s)
- Jordan Brito
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77840, USA
| | - Parin Purvin Shah
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77840, USA
| | - Aliaksei Aliakseyeu
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77840, USA
| | - Svetlana A Sukhishvili
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77840, USA
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Aliakseyeu A, Shah PP, Ankner JF, Sukhishvili SA. Salt-Induced Diffusion of Star and Linear Polyelectrolytes within Multilayer Films. Macromolecules 2023; 56:5434-5445. [PMID: 38357536 PMCID: PMC10863069 DOI: 10.1021/acs.macromol.3c00777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 06/19/2023] [Indexed: 02/16/2024]
Abstract
This study explores the effect of salt on the diffusivity of polyelectrolytes of varied molecular architecture in layer-by-layer (LbL) films in directions parallel and perpendicular to the substrate using fluorescence recovery after photobleaching (FRAP) and neutron reflectivity (NR) techniques, respectively. A family of linear, 4-arm, 6-arm, and 8-arm poly(methacrylic acids) (LPMAA, 4PMAA, 6PMAA, and 8PMAA, respectively) of matched molecular weights were synthesized using atom transfer radical polymerization and assembled with a linear polycation, poly[2-(trimethylammonium)ethyl methacrylate chloride] (QPC). NR studies involving deuterated QPC revealed ∼10-fold higher polycation mobility for the 8PMAA/QPC system compared to all-linear LbL films upon exposure to 0.25 M NaCl solutions at pH 6. FRAP experiments showed, however, that lateral diffusion of star PMAAs was lower than LPMAA at NaCl concentrations below ∼0.22 M NaCl, with a crossover to higher mobility of star polymers in more concentrated salt solutions. The stronger response of diffusion of star PMAA to salt is discussed in the context of several theories previously suggested for diffusivity of polyelectrolyte chains in multilayer films and coacervates.
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Affiliation(s)
- Aliaksei Aliakseyeu
- Department
of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Parin Purvin Shah
- Department
of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - John F. Ankner
- Spallation
Neutron Source Second Target Station Project, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Svetlana A. Sukhishvili
- Department
of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
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Mendrek B, Oleszko-Torbus N, Teper P, Kowalczuk A. Towards a modern generation of polymer surfaces: nano- and microlayers of star macromolecules and their design for applications in biology and medicine. Prog Polym Sci 2023. [DOI: 10.1016/j.progpolymsci.2023.101657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Aliakseyeu A, Ankner JF, Sukhishvili SA. Impact of Star Polyacid Branching on Polymer Diffusion within Multilayer Films. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aliaksei Aliakseyeu
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - John F. Ankner
- Spallation Neutron Source Second Target Station Project, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Svetlana A. Sukhishvili
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
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Liu W, Wijeratne S, Yang L, Bruening M. Porous star-star polyelectrolyte multilayers for protein binding. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.01.055] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mao T, Gou Y, Wang J, Wang H. Synthesis and properties of well-defined carbazole-containing fluorescent star polymers of different arms. E-POLYMERS 2017. [DOI: 10.1515/epoly-2016-0076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
AbstractA series of fluorescent carbazole-containing star polymers with different arms were successfully synthesized using 9-(4-vinylbenzyl)9H-carbazole (VBCz) as monomer and multifunctional bromide as initiators via atom transfer radical polymerization (ATRP). The effect of the poly(9-(4-vinylbenzyl)-9H-carbazole) (PVBCz) star polymer architecture on their optical and electrochemical properties was investigated. All of the PVBCz star polymers absorbed light in the range of 280–360 nm both in solution and as polymer films. Meanwhile, the star polymers exhibited maximum fluorescent emission at 350 nm in solution, while at 406 nm as films. Moreover, the star polymers with different arm numbers showed different photoluminescence quantum efficiency and highest and lowest occupied molecular orbital (HOMO, LOMO, respectively) energy levels. It is proved that the PVBCz star polymers exhibited different photoelectronic properties by varying the molecular architectures.
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Affiliation(s)
- Tengfei Mao
- 1Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defence Technology, Changsha 410073, China
| | - Yanzi Gou
- 1Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defence Technology, Changsha 410073, China
| | - Jun Wang
- 1Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defence Technology, Changsha 410073, China
| | - Hao Wang
- 1Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defence Technology, Changsha 410073, China
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Mao T, Gou Y, Wang H, Jian K, Wang J. Investigation on the fluorescence–(stimulus-response) properties of linear and star PVBCz-b-PDMAEMA block copolymers synthesized via ATRP. RSC Adv 2016. [DOI: 10.1039/c6ra14316d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Linear and star PVBCz-b-PDMAEMA block copolymers were synthesized via ATRP, the properties of which were investigated including ultraviolet-visible absorption, fluorescence emission, stimulus-response and fluorescence-stimulus-response.
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Affiliation(s)
- Tengfei Mao
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory
- National University of Defense Technology
- Changsha 410073
- China
| | - Yanzi Gou
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory
- National University of Defense Technology
- Changsha 410073
- China
| | - Hao Wang
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory
- National University of Defense Technology
- Changsha 410073
- China
| | - Ke Jian
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory
- National University of Defense Technology
- Changsha 410073
- China
| | - Jun Wang
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory
- National University of Defense Technology
- Changsha 410073
- China
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Effect of arm number of poly(acrylic acid) on cloud point temperature of poly(2-ethyl-2-oxazoline). JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0608-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Borges J, Mano JF. Molecular Interactions Driving the Layer-by-Layer Assembly of Multilayers. Chem Rev 2014; 114:8883-942. [DOI: 10.1021/cr400531v] [Citation(s) in RCA: 609] [Impact Index Per Article: 60.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- João Borges
- 3B’s
Research Group—Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra,
S. Cláudio do Barco 4806-909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s
− PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João F. Mano
- 3B’s
Research Group—Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra,
S. Cláudio do Barco 4806-909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s
− PT Government Associate Laboratory, Braga/Guimarães, Portugal
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Liu G, Zhang G. Growth Mechanism of Polyelectrolyte Multilayers. SPRINGERBRIEFS IN MOLECULAR SCIENCE 2013. [DOI: 10.1007/978-3-642-39790-5_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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