1
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Qi HK, Yang X, Yang QH, Luo MB. Effect of grafting density on the adsorption of end-grafted polymer chains. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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2
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Yang Q, Qi H, Yang X, Luo M, Huang J. Simulation study on the adsorption of polymer chains on checkerboard‐patterned surfaces. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220321] [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)
- Qing‐Hui Yang
- Department of Physics Hangzhou Dianzi University Hangzhou China
| | - Hang‐Kai Qi
- Department of Physics Zhejiang University Hangzhou China
| | - Xiao Yang
- Department of Physics Taizhou University Taizhou China
| | - Meng‐Bo Luo
- Department of Physics Zhejiang University Hangzhou China
| | - Jian‐Hua Huang
- Department of Chemistry Zhejiang Sci‐Tech University Hangzhou China
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3
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Yang QH, Qi HK, Yang X, Luo MB. Simulation study on the critical adsorption and diffusion of polymer chains on heterogeneous surfaces with random adsorption sites. SOFT MATTER 2021; 17:1000-1007. [PMID: 33284941 DOI: 10.1039/d0sm01721c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The critical adsorption and diffusion of a linear polymer chain on a heterogeneous surface with randomly distributed adsorption sites are studied using dynamic Monte Carlo simulations. Results show that the critical fraction of the adsorption sites at which critical adsorption takes place decreases exponentially with the increasing polymer-surface attraction strength and, at the same time, decreases with the increasing intra-polymer attraction strength. For adsorbed polymers with large intra-polymer attraction strength, we also find an adsorption-induced structural transition from a three-dimensional compact globule to a two-dimensional compacted pancake with an increasing fraction of adsorption sites. Anomalous sub-diffusion is observed for the adsorbed polymer diffusion on heterogeneous surfaces, in contrast to the normal diffusion on a homogeneous surface. The polymer on heterogeneous surfaces shows larger fluctuation in the total surface attraction energy and a longer waiting time.
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Affiliation(s)
- Qing-Hui Yang
- Department of Physics, Hangzhou Dianzi University, Hangzhou 310018, China.
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4
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Yang X, Huang JH, Mikhailov IV, Polotsky AA, Luo MB. Height Switching in Mixed Polymer Brushes with Polymers of Different Stiffnesses. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01150] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xiao Yang
- Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou 310027, China
| | - Jian-Hua Huang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Ivan V. Mikhailov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 31 Bolshoy pr, 199004 Saint Petersburg, Russia
| | - Alexey A. Polotsky
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 31 Bolshoy pr, 199004 Saint Petersburg, Russia
| | - Meng-Bo Luo
- Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou 310027, China
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5
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Yang X, Yang QH, Fu Y, Wu F, Huang JH, Luo MB. Study on the adsorption process of a semi-flexible polymer onto homogeneous attractive surfaces. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.03.064] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Ziebarth JD, Wang Y. Interactions of complex polymers with nanoporous substrate. SOFT MATTER 2016; 12:5245-5256. [PMID: 27263839 DOI: 10.1039/c6sm00768f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
With the advance of polymer synthesis, polymers that possess unique architectures such as stars or cyclic chains, and unique chemical composition distributions such as block copolymers or statistical copolymers have become frequently encountered. Characterization of these complex polymer systems drives the development of interactive chromatography where the adsorption of polymers on the porous substrate in chromatography columns is finely tuned. Liquid Chromatography at the Critical Condition (LCCC) in particular makes use of the existence of the Critical Adsorption Point (CAP) of polymers on solid surfaces and has been successfully applied to characterization of complex polymer systems. Interpretation and understanding of chromatography behaviour of complex polymers in interactive chromatography motivates theoretical/computational studies on the CAP of polymers and partitioning of these complex polymers near the CAP. This review article covers the theoretical questions encountered in chromatographic studies of complex polymers.
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Affiliation(s)
- Jesse D Ziebarth
- Department of Chemistry, The University of Memphis, Memphis, Tennessee, USA.
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7
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Li J, Zhang Z, Zhou X, Chen T, Nie J, Du B. PNIPAmx–PPO36–PNIPAmx thermo-sensitive triblock copolymers: chain conformation and adsorption behavior on a hydrophobic gold surface. Phys Chem Chem Phys 2016; 18:519-28. [DOI: 10.1039/c5cp06079f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The presence of the PNIPAm block is not a sufficient condition for the complex adsorption behavior of PNIPAmx–PPO36–PNIPAmx triblock copolymers.
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Affiliation(s)
- Jianyuan Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhijun Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Xianjing Zhou
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Tongquan Chen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jingjing Nie
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Binyang Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
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8
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Li H, Gong B, Qian CJ, Luo MB. Critical adsorption of a flexible polymer on a stripe-patterned surface. SOFT MATTER 2015; 11:3222-3231. [PMID: 25765551 DOI: 10.1039/c5sm00426h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The adsorption and dynamics of a polymer chain on a stripe-patterned surface composed of periodical attractive and neutral stripes are studied by using Monte Carlo simulation. The critical adsorption temperature Tc and pattern-recognition temperature Tr are estimated from the desorption probability, surface contact number, and bridge number. A phase diagram presenting three polymer states, including a desorbed state above Tc, a multi-stripe adsorbed state at an intermediate temperature Tr < T < Tc, and a single-stripe adsorbed state below Tr, is provided for infinitely long chains. Normal diffusion is always observed for a polymer in the direction parallel to the stripe even at low temperature. But in the direction perpendicular to the stripe, the polymer can freely diffuse above Tc, whereas the polymer is confined to one attractive stripe below Tr. However, the adsorbed polymer can hop from one attractive stripe to another at the intermediate temperature Tr < T < Tc.
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Affiliation(s)
- Hong Li
- Department of Physics, Wenzhou University, Wenzhou 325035, China.
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9
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Luo MB, Ziebarth JD, Wang Y. Interplay of Coil-Globule Transition and Surface Adsorption of a Lattice HP Protein Model. J Phys Chem B 2014; 118:14913-21. [PMID: 25458556 PMCID: PMC4280116 DOI: 10.1021/jp506126d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
![]()
An
end-grafted hydrophobic-polar (HP) model protein chain with
alternating H and P monomers is studied to examine interactions between
the critical adsorption transition due to surface attraction and the
collapse transition due to pairwise attractive H–H interactions.
We find that the critical adsorption phenomenon can always be observed;
however, the critical adsorption temperature TCAP is influenced by the attractive H–H interactions
in some cases. When the collapse temperature Tc is lower than TCAP, the critical
adsorption of the HP chain is similar to that of a homopolymer without
intrachain attractions and TCAP remains
unchanged, whereas the collapse transition is suppressed by the adsorption.
In contrast, for cases where Tc is close
to or higher than TCAP, TCAP of the HP chain is increased, indicating that a collapsed
chain is more easily adsorbed on the surface. The strength of the
H–H attraction also influences the statistical size and shape
of the polymer, with strong H–H attractions resulting in adsorbed
and collapsed chains adopting two-dimensional, circular conformations.
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Affiliation(s)
- Meng-Bo Luo
- Department of Physics, Zhejiang University , Hangzhou 310027, P. R. China
| | - Jesse D Ziebarth
- Department of Chemistry, The University of Memphis , Memphis, Tennessee 38152, United States
| | - Yongmei Wang
- Department of Chemistry, The University of Memphis , Memphis, Tennessee 38152, United States
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10
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Chen T, Lu Y, Chen T, Zhang X, Du B. Adsorption of PNIPAmx-PEO20-PPO70-PEO20-PNIPAmx pentablock terpolymer on gold surfaces: effects of concentration, temperature, block length, and surface properties. Phys Chem Chem Phys 2014; 16:5536-44. [DOI: 10.1039/c3cp54535k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Behringer H, Gemünden P. Homopolymer adsorption on periodically structured surfaces in systems with incommensurable lengths. J Chem Phys 2013; 138:174905. [DOI: 10.1063/1.4803021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Gemünden P, Behringer H. Selective homopolymer adsorption on structured surfaces as a model for pattern recognition. J Chem Phys 2013; 138:024904. [DOI: 10.1063/1.4773470] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Lu Y, Zhang X, Fan Z, Du B. Adsorption of PNIPAm110-PEO100-PPO65-PEO100-PNIPAm110 pentablock terpolymer on hydrophobic gold. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.06.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Glagoleva AA, Vasilevskaya VV, Khokhlov AR. Adsorption of amphiphilic comb-shaped macromolecules on a patterned surface. POLYMER SCIENCE SERIES A 2011. [DOI: 10.1134/s0965545x11040031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Mei A, Guo X, Ding Y, Zhang X, Xu J, Fan Z, Du B. PNIPAm-PEO-PPO-PEO-PNIPAm Pentablock Terpolymer: Synthesis and Chain Behavior in Aqueous Solution. Macromolecules 2010. [DOI: 10.1021/ma101086k] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aixiong Mei
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xiaolei Guo
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yanwei Ding
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xinghong Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Junting Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhiqiang Fan
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Binyang Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
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16
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Chen H, Chen X, Ye Z, Liu H, Hu Y. Competitive adsorption and assembly of block copolymer blends on nanopatterned surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:6663-6668. [PMID: 19994899 DOI: 10.1021/la904001h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
By employing off-lattice Monte Carlo simulations, the competitive adsorption and assembly of block copolymer blends on a nanopatterned surface were investigated. The segment distributions and polymer configurations are examined by varying the chemical structures of polymers, the interactions between segments and adsorbing stripe domains of the nanopatterned surface, and the width of stripe domains in the nanopatterned surface. The simulation results show that by modulating the affinities between a copolymer and the adsorbing stripe domain, one can adjust the density distributions and adsorption properties of block copolymer blends. With decorating the chemical structure of a surface, the targeted molecules would be actively recognized and separated. This offers a versatile way for novel separation materials and for the fabrication of nanomaterials.
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Affiliation(s)
- Houyang Chen
- State Key Laboratory of Chemical Engineering and Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China.
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