1
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Abeysekera I, Bosire R, Masese FK, Ndaya D, Kasi RM. Ionic nanoporous membranes from self-assembled liquid crystalline brush-like imidazolium triblock copolymers. SOFT MATTER 2024. [PMID: 39150444 DOI: 10.1039/d4sm00449c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
There is a need to generate mechanically and thermally robust ionic nanoporous membranes for separation and fuel cell applications. Herein, we report a general approach to the preparation of ionic nanoporous membranes through custom synthesis, self-assembly, and subsequent chemical manipulations of ionic brush block copolymers. We synthesized polynorbornene-based triblock copolymers containing imidazolium cations balanced by counter anions in the central block, side-chain liquid crystalline units, and sidechain polylactide end blocks. This unique platform comprises: (1) imidazolium/bis(trifluoromethanesulfonyl)imide (TFSI) as the middle block, which has an excellent ion-exchange ability, (2) cyanobiphenyl liquid crystalline end block, a sterically hindered hydrophobic segment, which is chemically stable and immune to hydroxide attack, (3) polylactide brush-like units on the other end block that is easily etched under mild alkaline conditions and (4) a polynorbornene backbone, a lightly crosslinked system that offers mechanical robustness. These membranes retain their morphology before and after backbone crosslinking as well as etching of polylactide sidechains. The ion exchange performance and dimensional stability of these membranes were investigated by water uptake capability and swelling ratio. Moreover, the length of the carbon spacer in the imidazolium/TFSI central block moiety endowed the membrane with improved ionic conductivity. The ionic nanoporous materials are unusual due to their singular thermal, mechanical, alkaline stability and ion transport properties. Applications of these materials include electrochemical actuators, solid-state ionic nanochannel biosensors, and ion-conducting membranes.
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Affiliation(s)
- Iyomali Abeysekera
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA.
| | - Reuben Bosire
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA.
| | - Francis K Masese
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA.
| | - Dennis Ndaya
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA.
- Polymer Program, Institute of Material Science, University of Connecticut, Storrs, CT 06269, USA
| | - Rajeswari M Kasi
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA.
- Polymer Program, Institute of Material Science, University of Connecticut, Storrs, CT 06269, USA
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2
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Cui S, Zhang B, Shen L, Bates FS, Lodge TP. Core–Shell Gyroid in ABC Bottlebrush Block Terpolymers. J Am Chem Soc 2022; 144:21719-21727. [DOI: 10.1021/jacs.2c09674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Shuquan Cui
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Bo Zhang
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Liyang Shen
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Frank S. Bates
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Timothy P. Lodge
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
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3
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Fei HF, Yavitt BM, Nuguri S, Yu YG, Watkins JJ. Ultrafast Self-Assembly of Bottlebrush Statistical Copolymers: Well-Ordered Nanostructures from One-Pot Polymerizations. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01311] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hua-Feng Fei
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Benjamin M. Yavitt
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Sravya Nuguri
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Yong-Guen Yu
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - James J. Watkins
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
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4
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Hu M, Li X, Rzayev J, Russell TP. Hydrolysis-Induced Self-Assembly of High-χ–Low-N Bottlebrush Copolymers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c02061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mingqiu Hu
- Polymer Science and Engineering Department, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Xindi Li
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Javid Rzayev
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Thomas P. Russell
- Polymer Science and Engineering Department, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
- Materials Science Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
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5
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Bosire R, Ndaya D, Kasi RM. Cholesteric mesophase based 1D photonic materials from self-assembly of liquid crystalline block and random terpolymers containing chromonic molecules. RSC Adv 2021; 11:14615-14623. [PMID: 35424004 PMCID: PMC8697838 DOI: 10.1039/d1ra00899d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/12/2021] [Indexed: 01/29/2023] Open
Abstract
We describe the influence of competing self-organizing phenomena on the formation of cholesteric mesophase in liquid crystalline brush block terpolymers (LCBBTs) and liquid crystalline random brush terpolymers (LCRBTs) containing chromonic molecules. A library of LCBBTs and LCRBTs are synthesized using ring-opening metathesis polymerization (ROMP) of norbornene side-chain functionalized monomers comprising cholesteryl mesogen (NBCh9), chromonic xanthenone (NBXan), and poly(ethylene glycol) (NBMPEG). Compression molded films of LCRBTs containing chromonic molecules display multilevel hierarchical structure in which cholesteric mesophase co-exists with π-π stacking of the chromonic mesophase along with PEG microphase segregated domains. This is unexpected as conventional LCBCPs and LCBBCs that lack chromonic molecules do not form cholesteric mesophases. The presence of π-π interactions modifies the interface at the IMDS so that both chromonic and cholesteric mesophases coexist leading to the manifestation of cholesteric phase for the first time within block architecture and is very reminiscent of previously published LCRBCs without chromonic molecules. The key to the observed hierarchical assembly in these LCBBTs containing chromonic molecules lies in the interplay of LC order, chromonic π-π stacking, PEG side chain microphase segregation, and their supramolecular cooperative motion. This unique "single component" polymer scaffold transforms our capacity to attain nanoscale hierarchies and optical properties from block architecture similar to nanoscale mesophases resulting in random architecture.
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Affiliation(s)
- Reuben Bosire
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
| | - Dennis Ndaya
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
- Polymer Program, Institute of Material Science, University of Connecticut Storrs CT 06269 USA
| | - Rajeswari M Kasi
- Department of Chemistry, University of Connecticut Storrs CT 06269 USA
- Polymer Program, Institute of Material Science, University of Connecticut Storrs CT 06269 USA
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6
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Lee C, Ndaya D, Bosire R, Gabinet UR, Sun J, Gopalan P, Kasi RM, Osuji CO. Effects of Labile Mesogens on the Morphology of Liquid Crystalline Block Copolymers in Thin Films. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Changyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Dennis Ndaya
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
- Polymer Program, Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Reuben Bosire
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
- Polymer Program, Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Uri R. Gabinet
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jian Sun
- Department of Materials Science and Engineering, University of Wisconsin, Madison Wisconsin 53706, United States
| | - Padma Gopalan
- Department of Materials Science and Engineering, University of Wisconsin, Madison Wisconsin 53706, United States
| | - Rajeswari M. Kasi
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
- Polymer Program, Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Chinedum O. Osuji
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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7
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Hampu N, Werber JR, Chan WY, Feinberg EC, Hillmyer MA. Next-Generation Ultrafiltration Membranes Enabled by Block Polymers. ACS NANO 2020; 14:16446-16471. [PMID: 33315381 DOI: 10.1021/acsnano.0c07883] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Reliable and equitable access to safe drinking water is a major and growing challenge worldwide. Membrane separations represent one of the most promising strategies for the energy-efficient purification of potential water sources. In particular, porous membranes are used for the ultrafiltration (UF) of water to remove contaminants with nanometric sizes. However, despite exhibiting excellent water permeability and solution processability, existing UF membranes contain a broad distribution of pore sizes that limit their size selectivity. To maximize the potential utility of UF membranes and allow for precise separations, improvements in the size selectivity of these systems must be achieved. Block polymers represent a potentially transformative solution, as these materials self-assemble into well-defined domains of uniform size. Several different strategies have been reported for integrating block polymers into UF membranes, and each strategy has its own set of materials and processing considerations to ensure that uniform and continuous pores are generated. This Review aims to summarize and critically analyze the chemistries, processing techniques, and properties required for the most common methods for producing porous membranes from block polymers, with a particular focus on the fundamental mechanisms underlying block polymer self-assembly and pore formation. Critical structure-property-performance metrics will be analyzed for block polymer UF membranes to understand how these membranes compare to commercial UF membranes and to identify key research areas for continued improvements. This Review is intended to inform readers of the capabilities and current challenges of block polymer UF membranes, while stimulating critical thought on strategies to advance these technologies.
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Affiliation(s)
- Nicholas Hampu
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jay R Werber
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Wui Yarn Chan
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Elizabeth C Feinberg
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Marc A Hillmyer
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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8
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Lin CM, Dwivedi AK, Chuang WT, Lin HC. Hierarchical self-assembly of supramolecular polymer complexes mediated by various generations of bent-core mesogenic dendrimers hydrogen-bonded with triblock copolymer. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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9
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Cao H, Dai L, Liu Y, Li X, Yang Z, Deng H. Methacrylic Block Copolymers Containing Liquid Crystalline and Fluorinated Side Chains Capable of Fast Formation of 4 nm Domains. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00777] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hui Cao
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Le Dai
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Yuyun Liu
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Xuemiao Li
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Zhenyu Yang
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Hai Deng
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
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10
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Lei L, Han L, Ma H, Zhang R, Huang S, Shen H, Yang L, Li C, Zhang S, Bai H, Ma Q, Li Y. Cooperative and Independent Effect of Modular Functionalization on Mesomorphic Performances and Microphase Separation of Well-Designed Liquid Crystalline Diblock Copolymers. Chemistry 2020; 26:11199-11208. [PMID: 32227410 DOI: 10.1002/chem.202000268] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Indexed: 11/06/2022]
Abstract
Liquid crystalline block copolymers (LCBCPs) are promising for developing functional materials owing to an assembly of better functionalities. Taking advantage of differences in reactivity between alkynyl and vinyl over temperature during hydrosilylation, a series of LCBCPs with modular functionalization of the block copolymers (BCPs) are reported by independently and site-selectively attaching azobenzene moieties containing alkynyl (LC1 ) and Si-H (LC2 ) terminals into well-designed poly(styrene)-block-polybutadienes (PS-b-PBs) and poly(4-vinylphenyldimethylsilane)-block-polybutadienes (PVPDMS-b-PBs) produced from living anionic polymerization (LAP). By the principle of modular functionalization, it is demonstrated that mono-functionalized (PVPDMS-g-LC1 )-b-PB and PS-b-(PB-g-LC2 ) not only maintain independence but also have cooperative contributions to bi-functionalized (PVPDMS-g-LC1 )-b-(PB-g-LC2 ) in terms of mesomorphic performances and microphase separation, which is evident from differential scanning calorimetry (DSC) and polarized optical morphologies (POM) and identified by powder X-ray diffractions. With the application of the new principle of modular functionalization, local-crosslinked liquid crystalline networks (LCNs) with controlled functionality are successfully synthesized, which show well-controlled phase behaviors over molecular compositions.
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Affiliation(s)
- Lan Lei
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Li Han
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Hongwei Ma
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Ruixue Zhang
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Shuai Huang
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Heyu Shen
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Lincan Yang
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Chao Li
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Songbo Zhang
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Hongyuan Bai
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Qingchi Ma
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Yang Li
- State Key Laboratory of Fine Chemicals, Department of Polymer Science and Engineering, Liaoning Key Laboratory of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
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11
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Yavitt BM, Fei H, Kopanati G, Li R, Fukuto M, Winter HH, Watkins JJ. Long-Range Lamellar Alignment in Diblock Bottlebrush Copolymers via Controlled Oscillatory Shear. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00047] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Benjamin M. Yavitt
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Huafeng Fei
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Gayathri Kopanati
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Ruipeng Li
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Masafumi Fukuto
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - H. Henning Winter
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
- Department of Chemical Engineering, University of Massachusetts Amherst, 686 N Pleasant St., Amherst, Massachusetts 01003, United States
| | - James J. Watkins
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
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12
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Ndaya D, Bosire R, Vaidya S, Kasi RM. Molecular engineering of stimuli-responsive, functional, side-chain liquid crystalline copolymers: synthesis, properties and applications. Polym Chem 2020. [DOI: 10.1039/d0py00749h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review describes recent progress made in designing stimuli-responsive, functional, side-chain, end-on mesogen attached liquid crystalline polymers (LCPs).
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Affiliation(s)
- Dennis Ndaya
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | - Reuben Bosire
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | | | - Rajeswari M. Kasi
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
- Polymer Program
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13
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Tang Z, Hou PP, Zhang W, Lyu X, Shen Z, Fan XH. Hierarchically Ordered Structures of Rod–Rod Block Copolymers Containing Two Mesogen-Jacketed Liquid Crystalline Polymers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhehao Tang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ping-Ping Hou
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Wei Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiaolin Lyu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhihao Shen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xing-He Fan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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14
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Jiang L, Nykypanchuk D, Pastore VJ, Rzayev J. Morphological Behavior of Compositionally Gradient Polystyrene–Polylactide Bottlebrush Copolymers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01756] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Liuyin Jiang
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Dmytro Nykypanchuk
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Vincent J. Pastore
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Javid Rzayev
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
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15
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Choinopoulos I. Grubbs' and Schrock's Catalysts, Ring Opening Metathesis Polymerization and Molecular Brushes-Synthesis, Characterization, Properties and Applications. Polymers (Basel) 2019; 11:E298. [PMID: 30960282 PMCID: PMC6419171 DOI: 10.3390/polym11020298] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 02/08/2019] [Accepted: 02/09/2019] [Indexed: 12/20/2022] Open
Abstract
In this review, molecular brushes and other macromolecular architectures bearing a bottlebrush segment where the main chain is synthesized by ring opening metathesis polymerization (ROMP) mediated by Mo or Ru metal complexes are considered. A brief review of metathesis and ROMP is presented in order to understand the problems and the solutions provided through the years. The synthetic strategies towards bottlebrush copolymers are demonstrated and each one discussed separately. The initiators/catalysts for the synthesis of the backbone with ROMP are discussed. Syntheses of molecular brushes are presented. The most interesting properties of the bottlebrushes are detailed. Finally, the applications studied by different groups are presented.
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Affiliation(s)
- Ioannis Choinopoulos
- Department of Chemistry, Industrial Chemistry Laboratory, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece.
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16
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Yu L, Martin IJ, Kasi RM, Wei M. Enhanced Intrafibrillar Mineralization of Collagen Fibrils Induced by Brushlike Polymers. ACS APPLIED MATERIALS & INTERFACES 2018; 10:28440-28449. [PMID: 30081624 DOI: 10.1021/acsami.8b10234] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Biomimetic mineralization of collagen fibrils is an essential process because the mineralized collagen fibers constitute the basic building block of natural bone. To overcome the limited availability and high cost of the noncollagenous proteins (NCPs) that regulate the mineralization process of collagen, commercially available analogues were developed to replicate sequestration and templating functions of NCPs. The use of branched polymers in intrafibrillar mineralization applications has never been explored. In this work, two novel carboxyl-rich brushlike polymers, a carboxylated polyethylene glycol terpolymer (PEG-COOH) and a polyethylene glycol/poly(acrylic acid) copolymer (PEG-PAA), were synthesized and modified to mimic the sequestration function of NCPs to induce intrafibrillar mineralization of collagen fibrils. It was found that these synthetic brushlike polymers are able to induce intrafibrillar mineralization by stabilizing the amorphous calcium phosphate (ACP) nanoprecursors and subsequently facilitating the infiltration of ACP into the gap zone of collagen microfibrils. Moreover, the weight ratios of mineral to collagen in the mineralized collagen fibrils in the presence of these brushlike polymers were 2.17 ± 0.07 for PEG-COOH and 2.23 ± 0.03 for PEG-PAA, while it is only 1.81 ± 0.21 for linear PAA. Plausible mineralization mechanisms using brushlike polymers are proposed that offer significant insight into the understanding of collagen mineralization induced by synthetic NCP analogues.
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17
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Ndaya D, Bosire R, Mahajan L, Huh S, Kasi R. Synthesis of ordered, functional, robust nanoporous membranes from liquid crystalline brush-like triblock copolymers. Polym Chem 2018. [DOI: 10.1039/c7py02127e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The fabrication of mechanically robust nanoporous polymeric membrane materials with aligned, accessible functionalized nanopores is extremely important for many applications.
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Affiliation(s)
- Dennis Ndaya
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | - Reuben Bosire
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | - Lalit Mahajan
- Polymer Program
- Institute of Material Science
- University of Connecticut
- Storrs
- USA
| | - Scarlet Huh
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | - Rajeswari Kasi
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
- Polymer Program
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18
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Ahn SK, Nam J, Zhu J, Lee E, Michael Kilbey S. Solution self-assembly of poly(3-hexylthiophene)–poly(lactide) brush copolymers: impact of side chain arrangement. Polym Chem 2018. [DOI: 10.1039/c8py00627j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Solution self-assembly of P3HT-containing copolymers was tailored effectively via bottlebrush architecture, particularly by tuning its side chain arrangement as well as copolymer composition.
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Affiliation(s)
- Suk-kyun Ahn
- Department of Polymer Science and Engineering
- Pusan National University
- Busan
- Republic of Korea
| | - Jinwoo Nam
- Graduate School of Analytical Science and Technology
- Chungnam National University
- Daejeon 34134
- Republic of Korea
- School of Materials Science and Engineering
| | - Jiahua Zhu
- Center for Nanophase Materials Sciences
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - Eunji Lee
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju 61005
- Republic of Korea
| | - S. Michael Kilbey
- Departments of Chemistry and Chemical and Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
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19
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Mahajan LH, Ndaya D, Deshmukh P, Peng X, Gopinadhan M, Osuji CO, Kasi RM. Optically Active Elastomers from Liquid Crystalline Comb Copolymers with Dual Physical and Chemical Cross-Links. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01157] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | | | | | | | - Manesh Gopinadhan
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Chinedum O. Osuji
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
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20
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Wei W, Wu Z, Huang M, Hsu CH, Liu Y, Zhang X, Xiong H. Discovery of hierarchical superstructures in block copolymers by integrating different liquid crystalline interactions. SOFT MATTER 2017; 13:2583-2589. [PMID: 28294274 DOI: 10.1039/c7sm00349h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Hierarchically assembled superstructures of block copolymers are discovered by introduction of the competition of anisotropy attributed from liquid crystalline ordering and nano-phase separation. When the two prototypical fields of liquid crystals (LCs), smectics (S) and nematics (N), are adjoined within the framework of diblock copolymers (S-N) in a variety of precisely tuned compositions, a novel class of superlattices with an interdigitated array of smectic layers between the nearest lamellae or cylinders are observed. This generates unconventional nano-phase separated orthorhombic (Lo) and pseudo-hexagonal (Ho) structures, where the stretched N tethers, projected regularly from the S layers, could transfer the local organization and guide the correlated assembly. This type of superstructure is highly frustrated in reversed cylindrical morphology and absent in S-coil diblock copolymers. The collective interplay of the S and N interactions with nano-phase separation induces the formation of the final complex yet equilibrium structures, providing unprecedented opportunities towards exquisite structural diversity.
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Affiliation(s)
- Wei Wei
- Department of Polymer Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zhichao Wu
- Department of Polymer Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Mingjun Huang
- Department of Polymer Science, the University of Akron, Akron, Ohio 44325, USA
| | - Chih-Hao Hsu
- Department of Polymer Science, the University of Akron, Akron, Ohio 44325, USA
| | - Yu Liu
- Department of Polymer Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Xinlin Zhang
- Department of Polymer Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Huiming Xiong
- Department of Polymer Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China and Center for Soft Matter and Interdisciplinary Sciences, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
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21
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Ramírez-Hernández A, Hur SM, Armas-Pérez JC, de la Cruz MO, de Pablo JJ. Demixing by a Nematic Mean Field: Coarse-Grained Simulations of Liquid Crystalline Polymers. Polymers (Basel) 2017; 9:E88. [PMID: 30970766 PMCID: PMC6431948 DOI: 10.3390/polym9030088] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 02/24/2017] [Indexed: 11/17/2022] Open
Abstract
Liquid crystalline polymers exhibit a particular richness of behaviors that stems from their rigidity and their macromolecular nature. On the one hand, the orientational interaction between liquid-crystalline motifs promotes their alignment, thereby leading to the emergence of nematic phases. On the other hand, the large number of configurations associated with polymer chains favors formation of isotropic phases, with chain stiffness becoming the factor that tips the balance. In this work, a soft coarse-grained model is introduced to explore the interplay of chain stiffness, molecular weight and orientational coupling, and their role on the isotropic-nematic transition in homopolymer melts. We also study the structure of polymer mixtures composed of stiff and flexible polymeric molecules. We consider the effects of blend composition, persistence length, molecular weight and orientational coupling strength on the melt structure at the nano- and mesoscopic levels. Conditions are found where the systems separate into two phases, one isotropic and the other nematic. We confirm the existence of non-equilibrium states that exhibit sought-after percolating nematic domains, which are of interest for applications in organic photovoltaic and electronic devices.
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Affiliation(s)
- Abelardo Ramírez-Hernández
- Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA
- Institute for Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA; (S.-M.H.); (J.C.A.-P.)
| | - Su-Mi Hur
- Institute for Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA; (S.-M.H.); (J.C.A.-P.)
- School of Polymer Science and Engineering, Chonnam National University, Gwangju 500-757, Korea
| | - Julio C. Armas-Pérez
- Institute for Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA; (S.-M.H.); (J.C.A.-P.)
- División de Ciencias e Ingenierías, Campus León, Universidad de Guanajuato, Loma del Bosque 103, León, Guanajuato 37150, Mexico
| | - Monica Olvera de la Cruz
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA;
| | - Juan J. de Pablo
- Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA
- Institute for Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA; (S.-M.H.); (J.C.A.-P.)
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22
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Gai Y, Song DP, Yavitt BM, Watkins JJ. Polystyrene-block-poly(ethylene oxide) Bottlebrush Block Copolymer Morphology Transitions: Influence of Side Chain Length and Volume Fraction. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b01415] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yue Gai
- Department of Polymer
Science
and Engineering, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
| | - Dong-Po Song
- Department of Polymer
Science
and Engineering, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
| | - Benjamin M. Yavitt
- Department of Polymer
Science
and Engineering, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
| | - James J. Watkins
- Department of Polymer
Science
and Engineering, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
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23
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Bilger D, Sarkar A, Danesh C, Gopinadhan M, Braggin G, Figueroa J, Pham TV, Chun D, Rao Y, Osuji CO, Stefik M, Zhang S. Multi-Scale Assembly of Polythiophene-Surfactant Supramolecular Complexes for Charge Transport Anisotropy. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02416] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- David Bilger
- Department
of Chemistry and Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Amrita Sarkar
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Cameron Danesh
- Department
of Chemistry and Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Manesh Gopinadhan
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Gregory Braggin
- Department
of Chemistry and Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Jose Figueroa
- Department
of Chemistry and Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Thanh Vy Pham
- Department
of Chemistry and Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Danielle Chun
- Department
of Chemistry and Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Yashas Rao
- Department
of Chemistry and Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Chinedum O. Osuji
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Morgan Stefik
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Shanju Zhang
- Department
of Chemistry and Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
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24
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Slegeris R, Ondrusek BA, Chung H. Catechol- and ketone-containing multifunctional bottlebrush polymers for oxime ligation and hydrogel formation. Polym Chem 2017. [DOI: 10.1039/c7py01112a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report the synthesis of a highly-functional macromonomer, and subsequent crosslinkable poly(ethylene glycol) (PEG)-based bottlebrush polymers prepared via graft-through ring-opening metathesis polymerization (ROMP).
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Affiliation(s)
- Rimantas Slegeris
- Department of Chemical and Biomedical Engineering
- Florida State University
- Tallahassee
- USA
| | - Brian A. Ondrusek
- Department of Chemical and Biomedical Engineering
- Florida State University
- Tallahassee
- USA
| | - Hoyong Chung
- Department of Chemical and Biomedical Engineering
- Florida State University
- Tallahassee
- USA
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25
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Yavitt BM, Gai Y, Song DP, Winter HH, Watkins JJ. High Molecular Mobility and Viscoelasticity of Microphase-Separated Bottlebrush Diblock Copolymer Melts. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01471] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Benjamin M. Yavitt
- Department of Polymer Science and
Engineering and ‡Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Yue Gai
- Department of Polymer Science and
Engineering and ‡Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Dong-Po Song
- Department of Polymer Science and
Engineering and ‡Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - H. Henning Winter
- Department of Polymer Science and
Engineering and ‡Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - James J. Watkins
- Department of Polymer Science and
Engineering and ‡Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
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26
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2015. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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27
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Song DP, Gai Y, Yavitt BM, Ribbe A, Gido S, Watkins JJ. Structural Diversity and Phase Behavior of Brush Block Copolymer Nanocomposites. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01602] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Dong-Po Song
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Yue Gai
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Benjamin M. Yavitt
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Alexander Ribbe
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Samuel Gido
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - James J. Watkins
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
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28
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Ping J, Gu K, Zhou S, Pan H, Shen Z, Fan XH. Hierarchically Self-Assembled Amphiphilic Alternating Copolymer Brush Containing Side-Chain Cholesteryl Units. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01043] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jing Ping
- Beijing National Laboratory
for Molecular Sciences, Department of Polymer Science and Engineering,
and Key Laboratory of Polymer Chemistry and Physics of Ministry of
Education, Center for Soft Matter Science and Engineering, College
of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Kehua Gu
- Beijing National Laboratory
for Molecular Sciences, Department of Polymer Science and Engineering,
and Key Laboratory of Polymer Chemistry and Physics of Ministry of
Education, Center for Soft Matter Science and Engineering, College
of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Sheng Zhou
- Beijing National Laboratory
for Molecular Sciences, Department of Polymer Science and Engineering,
and Key Laboratory of Polymer Chemistry and Physics of Ministry of
Education, Center for Soft Matter Science and Engineering, College
of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Hongbing Pan
- Beijing National Laboratory
for Molecular Sciences, Department of Polymer Science and Engineering,
and Key Laboratory of Polymer Chemistry and Physics of Ministry of
Education, Center for Soft Matter Science and Engineering, College
of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhihao Shen
- Beijing National Laboratory
for Molecular Sciences, Department of Polymer Science and Engineering,
and Key Laboratory of Polymer Chemistry and Physics of Ministry of
Education, Center for Soft Matter Science and Engineering, College
of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xing-He Fan
- Beijing National Laboratory
for Molecular Sciences, Department of Polymer Science and Engineering,
and Key Laboratory of Polymer Chemistry and Physics of Ministry of
Education, Center for Soft Matter Science and Engineering, College
of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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29
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Cylindrical polymer brushes – Anisotropic building blocks, unimolecular templates and particulate nanocarriers. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.03.076] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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30
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31
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Han L, Ma H, Li Y, Zhu S, Yang L, Tan R, Liu P, Shen H, Huang W, Gong X. Strategies for Tailoring LC-Functionalized Polymer: Probe Contribution of [Si–O–Si] versus [Si–C] Spacer to Thermal and Polarized Optical Performance “Driven by” Well-Designed Grafting Density and Precision in Flexible/Rigid Matrix. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01429] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Li Han
- State Key
Laboratory of Fine
Chemicals, Department of Polymer Science and Engineering, School of
Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116012, China
- Liaoning Key Laboratory
of Polymer Science
and Engineering, Dalian, Liaoning 116012, China
| | - Hongwei Ma
- State Key
Laboratory of Fine
Chemicals, Department of Polymer Science and Engineering, School of
Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116012, China
- Liaoning Key Laboratory
of Polymer Science
and Engineering, Dalian, Liaoning 116012, China
| | - Yang Li
- State Key
Laboratory of Fine
Chemicals, Department of Polymer Science and Engineering, School of
Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116012, China
- Liaoning Key Laboratory
of Polymer Science
and Engineering, Dalian, Liaoning 116012, China
| | - Siqi Zhu
- State Key
Laboratory of Fine
Chemicals, Department of Polymer Science and Engineering, School of
Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116012, China
- Liaoning Key Laboratory
of Polymer Science
and Engineering, Dalian, Liaoning 116012, China
| | - Lincan Yang
- State Key
Laboratory of Fine
Chemicals, Department of Polymer Science and Engineering, School of
Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116012, China
- Liaoning Key Laboratory
of Polymer Science
and Engineering, Dalian, Liaoning 116012, China
| | - Rui Tan
- State Key
Laboratory of Fine
Chemicals, Department of Polymer Science and Engineering, School of
Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116012, China
- Liaoning Key Laboratory
of Polymer Science
and Engineering, Dalian, Liaoning 116012, China
| | - Pibo Liu
- State Key
Laboratory of Fine
Chemicals, Department of Polymer Science and Engineering, School of
Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116012, China
- Liaoning Key Laboratory
of Polymer Science
and Engineering, Dalian, Liaoning 116012, China
| | - Heyu Shen
- State Key
Laboratory of Fine
Chemicals, Department of Polymer Science and Engineering, School of
Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116012, China
- Liaoning Key Laboratory
of Polymer Science
and Engineering, Dalian, Liaoning 116012, China
| | - Wei Huang
- State Key
Laboratory of Fine
Chemicals, Department of Polymer Science and Engineering, School of
Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116012, China
- Liaoning Key Laboratory
of Polymer Science
and Engineering, Dalian, Liaoning 116012, China
| | - Xichen Gong
- State Key
Laboratory of Fine
Chemicals, Department of Polymer Science and Engineering, School of
Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116012, China
- Liaoning Key Laboratory
of Polymer Science
and Engineering, Dalian, Liaoning 116012, China
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32
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Luo H, Raciti D, Wang C, Herrera-Alonso M. Macromolecular Brushes as Stabilizers of Hydrophobic Solute Nanoparticles. Mol Pharm 2016; 13:1855-65. [PMID: 27035279 DOI: 10.1021/acs.molpharmaceut.6b00019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Macromolecular brushes bearing poly(ethylene glycol) and poly(d,l-lactide) side chains were used to stabilize hydrophobic solute nanoparticles formed by a rapid change in solvent quality. Unlike linear diblock copolymers with the same hydrophilic and hydrophobic block chemistries, the brush copolymer enabled the formation of ellipsoidal β-carotene nanoparticles, which in cosolvent mixtures developed into rod-like structures, resulting from a combination of Ostwald ripening and particle aggregation. The stabilizing ability of the copolymer was highly dependent on the mobility of the hydrophobic component, influenced by its molecular weight. As shown here, asymmetric amphiphilic macromolecular brushes of this type may be used as hydrophobic drug stabilizers and potentially assist the shape control of nonspherical aggregate morphologies.
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Affiliation(s)
- Hanying Luo
- Department of Materials Science and Engineering, Johns Hopkins University , Baltimore, Maryland 21218, United States
| | - David Raciti
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University , Baltimore, Maryland 21218, United States
| | - Chao Wang
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University , Baltimore, Maryland 21218, United States
| | - Margarita Herrera-Alonso
- Department of Materials Science and Engineering, Johns Hopkins University , Baltimore, Maryland 21218, United States
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