1
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Tarazona NA, Keller M, Machatschek R. Molecular Chirality of Biosynthesized PHB Translates into Uniformly Curved Single Crystals in Langmuir Films. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2312058. [PMID: 38577827 DOI: 10.1002/smll.202312058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/19/2024] [Indexed: 04/06/2024]
Abstract
While in nature, molecular chirality enables the formation of chiral macroscopic structures through crystallization and self-organization, such a transfer of molecular information to higher hierarchical levels is rarely observed in vitro. Here, the study reports on single crystals of microbially synthesized polyester poly[(R)-3-hydroxybutyrate], which have chiral habits when grown at the air-water interface, in analogy to the 2D crystallization of chiral lipids such as DPPC. Depending on the crystallization conditions, the chiral single crystals either undergo a transition into fiber-like structures, orassemble into larger superstructures with a uniform sense of rotation.
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Affiliation(s)
- Natalia A Tarazona
- Institute of Active Polymers, Helmholtz Zentrum Hereon, 14513, Teltow, Germany
| | - Manuela Keller
- Institute of Active Polymers, Helmholtz Zentrum Hereon, 14513, Teltow, Germany
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2
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Yuan J, Chiu PT, Liu X, Zhou J, Wang Y, Ho RM, Wen T. Cross-domain Chirality Transfer in Self-Assembly of Chiral Block Copolymers. Angew Chem Int Ed Engl 2024; 63:e202317102. [PMID: 38140766 DOI: 10.1002/anie.202317102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/17/2023] [Accepted: 12/22/2023] [Indexed: 12/24/2023]
Abstract
Chirality transfer is essential to acquire helical hierarchical superstructures from the self-assembly of supramolecular materials. By taking advantage of chirality transfers at different length scales through intra-chain and inter-chain chiral interactions, helical phase (H*) can be formed from the self-assembly of chiral block copolymers (BCPs*). In this study, chiral triblock terpolymers, polystyrene-b-poly(ethylene oxide)-b-poly(L-lactide) (PS-PEO-PLLA), and polystyrene-b-poly(4-vinylpyridine)-b-poly(L-lactide) (PS-P4VP-PLLA) are synthesized for self-assembly. For PS-PEO-PLLA with an achiral PEO mid-block that is compatible with PLLA (chiral end-block), H* can be formed while the block length is below a critical value. By contrast, for the one with achiral P4VP mid-block that is incompatible with PLLA, the formation of H* phase would be suppressed regardless of the length of the mid-block, giving cylinder phase. Those results elucidate a new type of chirality transfer across the phase domain that is referred as cross-domain chirality transfer, providing complementary understanding of the chirality transfer at the interface of phase-separated domains.
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Affiliation(s)
- Jun Yuan
- Electron Microscopy Center, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510640, China
| | - Po-Ting Chiu
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan
| | - Xiang Liu
- School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510640, China
| | - Jiajia Zhou
- School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510640, China
| | - Yingying Wang
- School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510640, China
| | - Rong-Ming Ho
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan
| | - Tao Wen
- School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510640, China
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3
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Synchrotron X-ray-analyzed inner structure of polyethylene spherulites and atomistic simulation of a trigger of the lamellar twisting phenomenon. Polym J 2022. [DOI: 10.1038/s41428-022-00710-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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4
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Abramova A, Glagolev M, Vasilevskaya V. Structured globules with twisted arrangement of helical blocks: Computer simulation. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Li B, Zhao Y, Chen X, Wang Z, Xu J, Shi W. Polymer Crystallization with Configurable Birefringence in Double Emulsion Droplets. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Baihui Li
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yue Zhao
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiaotong Chen
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhiqi Wang
- Advanced Materials Laboratory of Ministry of Education, Department of Chemical Engineering, Tsinghua University, 100084 Beijing, China
| | - Jun Xu
- Advanced Materials Laboratory of Ministry of Education, Department of Chemical Engineering, Tsinghua University, 100084 Beijing, China
| | - Weichao Shi
- Key Laboratory of Functional Polymer Materials of Ministry of Education; Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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6
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Chao YK, Praveena NM, Yang KC, Gowd EB, Ho RM. Crystallization of polylactides examined by vibrational circular dichroism of intra- and inter-chain chiral interactions. SOFT MATTER 2022; 18:2722-2725. [PMID: 35234247 DOI: 10.1039/d2sm00060a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Herein, vibrational circular dichroism (VCD) measurements were carried out to study the kinetics of cold-crystallized poly(D-lactide) (PDLA) at the molecular level via qualitative analysis. The amplification of the VCD signals from intra- and inter-chain chiral interactions suggests the formation of partially ordered PDLA, followed by heterogeneous nucleation for crystallization. These results were further supported by differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD) and Fourier transform infrared (FTIR) spectroscopy analyses.
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Affiliation(s)
- Yi-Kuan Chao
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China.
| | - N M Praveena
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Industrial Estate (P.O.) Pappanamcode, Trivandrum 695 019, Kerala, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Kai-Chieh Yang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China.
| | - E Bhoje Gowd
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Industrial Estate (P.O.) Pappanamcode, Trivandrum 695 019, Kerala, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Rong-Ming Ho
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China.
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7
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Liu W, Wu X, Chen X, Liu S, Zhang C. Flexibly Controlling the Polycrystallinity and Improving the Foaming Behavior of Polylactic Acid via Three Strategies. ACS OMEGA 2022; 7:6248-6260. [PMID: 35224387 PMCID: PMC8867551 DOI: 10.1021/acsomega.1c06777] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
Controlling foamability plays the central role in preparing PLA foams with high performances. To achieve this, chain extension was often used to improve the rheological property of PLA resins; however, despite the availability of this approach, it often deteriorates the biodegradability of PLA and greatly increases the processing cost and complexity. Hence, we reported a special crystallization induction method to design PLA foams with a tunable cellular structure and a high expansion ratio. A novel crystallization-promoting agent combination (D-sorbitol, CO2, and phenylphosphonic acid zinc salt) was used to induce PLA to enhance the chain interaction force and chain mobility and to provide crystallization templets. A series of PLAs with tunable stereocomplex (Sc)/α crystallinity and rapid non-isothermal crystallization ability were obtained. The effect of various crystallization properties on the foaming behavior of PLA was studied. The results demonstrated that proper crystallization conditions (a small spherulite size, a crystallinity of 6%, and rapid crystallization ability) could virtually contribute to the optimized cellular structure with the highest cell density of 4.36 × 106 cell/cm3. When the Sc crystallinity was above 10%, PLA had a superior foamability, which thereby resulted in a high foaming expansion ratio of 16.2. A variety of cellular morphologies of PLA foams could be obtained by changing the foaming temperature and the crystallization property. The proposed crystallization-induced approach provided a useful method for controlling the cellular structure and the performances of the PLA foams.
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8
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Facile fabrication of end-functional PLLA with AIEgens via Ugi reaction. POLYMER 2022. [DOI: 10.1016/j.polymer.2021.124432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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9
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Virat G, Gowd EB. Poly(l-lactide)s with tetraphenylethylene: role of polymer chain packing in aggregation-induced emission behavior of tetraphenylethylene. Polym Chem 2022. [DOI: 10.1039/d1py01539g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The AIE behavior of tetraphenylethylene in biocompatible poly(l-lactide)s is found to be sensitive to the polymer chain packing, polymer crystal structure, solvent, and temperature.
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Affiliation(s)
- G. Virat
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - E. Bhoje Gowd
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
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10
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Glagolev MK, Glagoleva AA, Vasilevskaya VV. Microphase separation in helix-coil block copolymer melts: computer simulation. SOFT MATTER 2021; 17:8331-8342. [PMID: 34550153 DOI: 10.1039/d1sm00759a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
By means of molecular dynamics simulation, the process of the microphase separation in the melts of diblock helix-coil copolymers comprising a flexible and a helical block was studied. The resulting microstructures were examined, and the spatial distribution of the blocks and molecular packing were investigated. The phase diagram was built in terms of the fraction of the helical block and the incompatibility parameter of the blocks. The comparison of the diagrams for helix-coil and the classic coil-coil copolymer blends was carried out. It was shown that the total region where the ordering into distinctive microstructures takes place is similar for both diagrams. But for the helix-coil copolymers the area of the cylinders splits into the region of those with circular and elliptical cross-sections; the bicontinuous phase area is much wider; in the lamellar phases, the helical blocks were oriented precisely perpendicular to the lamellar interface, forming a cohesive interlocked structure of densely packed helices.
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Affiliation(s)
- M K Glagolev
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova ul. 28, Moscow 119991, Russia.
| | - A A Glagoleva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova ul. 28, Moscow 119991, Russia.
| | - V V Vasilevskaya
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova ul. 28, Moscow 119991, Russia.
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11
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Nagarajan S. Lamellar Assembly Mechanism on Dendritic Ring-Banded Spherulites of Poly(ε-caprolactone). Macromol Rapid Commun 2021; 42:e2100359. [PMID: 34491601 DOI: 10.1002/marc.202100359] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/30/2021] [Indexed: 01/09/2023]
Abstract
The self-assembly structures of lamellae in optical ring bands have a critical effect on their optical and physical arrangements. Two different types of dendritic banded spherulites (namely ring-banded and zigzag ring-banded) are formed in poly(ε-caprolactone)/poly (phenyl methacrylate) blend at crystallization temperatures of 42 and 46 °C, respectively. The difference in optical birefringence of ring bands in two types of spherulites is resolved by means of direct morphological comparison. Banded spherulites are fractured carefully to facilitate lamellar orientation analyses of both the top surface and the interior surface. The results have revealed the existence of tree-like dendritic fractal growth lamellar assemblies in both banded spherulites. The optical ring patterns of the banded spherulites are differentiated mainly by the fractal orientation of the edge-on crystal branches in the ridge region. On the basis of detailed morphological analysis, 3D-lamellar assembly mechanisms are proposed to explain the growth of dendritic ring-banded spherulites at 42 °C and dendritic zigzag ring-banded spherulites at 46 °C.
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Affiliation(s)
- Selvaraj Nagarajan
- Department of Chemical Engineering, National Cheng Kung University, Tainan, 701, Taiwan
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12
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Huang S, Yu H, Li Q. Supramolecular Chirality Transfer toward Chiral Aggregation: Asymmetric Hierarchical Self-Assembly. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2002132. [PMID: 33898167 PMCID: PMC8061372 DOI: 10.1002/advs.202002132] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 12/21/2020] [Indexed: 05/21/2023]
Abstract
Self-assembly, as a typical bottom-up strategy for the fabrication of functional materials, has been applied to fabricate chiral materials with subtle chiral nanostructures. The chiral nanostructures exhibit great potential in asymmetric catalysis, chiral sensing, chiral electronics, photonics, and even the realization of several biological functions. According to existing studies, the supramolecular chirality transfer process combined with hierarchical self-assembly plays a vital role in the fabrication of multiscale chiral structures. This progress report focuses on the hierarchical self-assembly of chiral or achiral molecules that aggregate with asymmetric spatial structures such as twisted bands, helices, and superhelices in different environments. Herein, recent studies on the chirality transfer induced self-assembly based on a variety of supramolecular interactions are summarized. In addition, the influence of different environments and the states of systems including solutions, condensed states, gel systems, interfaces on the asymmetric hierarchical self-assembly, and the expression of chirality are explored. Moreover, both the driving forces that facilitate chiral bias and the supramolecular interactions that play an important role in the expression, transfer, and amplification of the chiral sense are correspondingly discussed.
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Affiliation(s)
- Shuai Huang
- School of Materials Science and EngineeringKey Laboratory of Polymer Chemistry and Physics of Ministry of EducationPeking UniversityBeijing100871China
- Institute of Advanced MaterialsSchool of Chemistry and Chemical EngineeringSoutheast UniversityNanjingJiangsu Province211189China
| | - Haifeng Yu
- School of Materials Science and EngineeringKey Laboratory of Polymer Chemistry and Physics of Ministry of EducationPeking UniversityBeijing100871China
| | - Quan Li
- Advanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary ProgramKent State UniversityKentOH44242USA
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13
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Tu CH, Woo EM, Nagarajan S, Lugito G. Sophisticated dual-discontinuity periodic bands of poly(nonamethylene terephthalate). CrystEngComm 2021. [DOI: 10.1039/d0ce01329c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Crystallized poly(nonamethylene terephthalate) (PNT) displays mirror-image and Fermat's-spiral ring-banded spherulites, respectively.
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Affiliation(s)
- Chien-Hua Tu
- Department of Chemical Engineering
- National Cheng Kung University No.1
- Tainan
- Taiwan
| | - Eamor M. Woo
- Department of Chemical Engineering
- National Cheng Kung University No.1
- Tainan
- Taiwan
| | - Selvaraj Nagarajan
- Department of Chemical Engineering
- National Cheng Kung University No.1
- Tainan
- Taiwan
| | - Graecia Lugito
- Department of Chemical Engineering
- National Cheng Kung University No.1
- Tainan
- Taiwan
- Department of Chemical Engineering
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14
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Praveena NM, Nagarajan S, Gowd EB. Stereocomplexation of enantiomeric star-shaped poly(lactide)s with a chromophore core. CrystEngComm 2021. [DOI: 10.1039/d1ce00037c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Herein, we aim to investigate the influence of the cooling rate from the melt on stereocomplex formation of equimolar blends of enantiomeric star-shaped poly(lactide)s with a dipyridamole core.
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Affiliation(s)
- N. M. Praveena
- Materials Science and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum 695 019
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Selvaraj Nagarajan
- Materials Science and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum 695 019
- India
- Department of Chemical Engineering
| | - E. Bhoje Gowd
- Materials Science and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum 695 019
- India
- Academy of Scientific and Innovative Research (AcSIR)
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15
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Zhou M, He Z, Chen Y, Zhu L, Li L, Li J. Synthesis, Self-assembly, and Fluorescence Application of Bottlebrush Polyfluorene-g-Polycaprolactone with Conjugated Backbone and Crystalline Brushes. Macromol Rapid Commun 2020; 42:e2000544. [PMID: 33331036 DOI: 10.1002/marc.202000544] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/08/2020] [Indexed: 01/09/2023]
Abstract
A series of bottlebrush copolymers with conjugated backbone and crystalline branch chains, polyfluorene-g-polycaprolactone (PF-g-PCL), are synthesized by combining Suzuki cross-coupling polymerization and cationic ring-opening polymerization. The PF-g-PCLs are prepared to self-assembled in solution and thin film. Due to the J-type aggregation of the polyfluorene main chains, the self-assembly spherical micelles have been observed. Meanwhile, in film, they exhibited self-assembly ringed spherulites because of the PF microregions in the bottlebrush copolymer. As a result of the interruption of PCL side chains, the aggregation tendency of PF main chains is weakened. And both the polymer solution and solid can overcome the aggregation-caused quenching to provide more pronounced fluorescence. Especially, owing to the good processability of the PF-g-PCL, as a fluorescent ink for different substrates, they can easily be prepared as high-brightness fluorescent films that are invisible under ambient light.
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Affiliation(s)
- Mi Zhou
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
| | - Zejian He
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
| | - Yulong Chen
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
| | - Liangliang Zhu
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
| | - Li Li
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
| | - Jie Li
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
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16
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Lv T, Hu C, Li J, Huang S, Wen H, Li H, Chen J, Yu D, de Claville Christiansen J, Jiang S. Thermal dynamics affected formation and dislocation of PDLA morphology. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122318] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Extended-chain crystallization and stereocomplex formation of polylactides in a Langmuir monolayer. Polym J 2020. [DOI: 10.1038/s41428-020-0312-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Yang KC, Chiu PT, Ho RM. Mesochiral phases from the self-assembly of chiral block copolymers. Polym Chem 2020. [DOI: 10.1039/c9py01797f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Self-assembly of block copolymers with chiral sense gives mesochiral phases possessing helical sense. With the controlled chirality of the helical cylinder and chiral network, it is appealing to fabricate chiral materials for applications.
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Affiliation(s)
- Kai-Chieh Yang
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Republic of China
| | - Po-Ting Chiu
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Republic of China
| | - Rong-Ming Ho
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Republic of China
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19
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Ye HM, Freudenthal JH, Tan M, Yang J, Kahr B. Chiroptical Differentiation of Twisted Chiral and Achiral Polymer Crystals. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01526] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Hai-Mu Ye
- Department of Chemistry and Molecular Design Institute, New York University, New York, New York 10003, United States
- Department of Materials Science and Engineering, College of New Energy and Materials, China University of Petroleum, Beijing 102249, P. R. China
| | - John H. Freudenthal
- Hinds Instruments, 7245 NW Evergreen Parkway, Hillsboro, Oregon 97124, United States
| | - Melissa Tan
- Department of Chemistry and Molecular Design Institute, New York University, New York, New York 10003, United States
| | - Jingxiang Yang
- Department of Chemistry and Molecular Design Institute, New York University, New York, New York 10003, United States
| | - Bart Kahr
- Department of Chemistry and Molecular Design Institute, New York University, New York, New York 10003, United States
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20
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Ikehara T, Kataoka T, Inutsuka M, Jin RH. Chiral Nucleating Agents Affecting the Handedness of Lamellar Twist in the Banded Spherulites in Poly(ε-Caprolactone)/Poly(Vinyl Butyral) Blends. ACS Macro Lett 2019; 8:871-874. [PMID: 35619514 DOI: 10.1021/acsmacrolett.9b00416] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chiral silica, which acts as a nucleating agent of poly(ε-caprolactone) (PCL), was demonstrated to induce excess handedness of lamellar twist in the banded spherulites of PCL blended with poly(vinyl butyral). The d- and l-forms of silica enhanced the right- and left-handed twists, respectively. The influences of chiral silica on the twist handedness were statistically significant. These results indicate that the handedness of twisting can be controlled upon primary nucleation. The organic substances used as chiral templates of silica had no effect on the handedness; silica was shown to govern the handedness. The possible mechanisms of the chirality transfer are discussed.
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Affiliation(s)
- Takayuki Ikehara
- Department of Material and Life Chemistry, Kanagawa University, 3-6-1, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Toshiyuki Kataoka
- Department of Material and Life Chemistry, Kanagawa University, 3-6-1, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Manabu Inutsuka
- Department of Material and Life Chemistry, Kanagawa University, 3-6-1, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Ren-Hua Jin
- Department of Material and Life Chemistry, Kanagawa University, 3-6-1, Kanagawa-ku, Yokohama 221-8686, Japan
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21
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Wang HF, Yang KC, Hsu WC, Lee JY, Hsu JT, Grason GM, Thomas EL, Tsai JC, Ho RM. Generalizing the effects of chirality on block copolymer assembly. Proc Natl Acad Sci U S A 2019; 116:4080-4089. [PMID: 30765528 PMCID: PMC6410856 DOI: 10.1073/pnas.1812356116] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
We explore the generality of the influence of segment chirality on the self-assembled structure of achiral-chiral diblock copolymers. Poly(cyclohexylglycolide) (PCG)-based chiral block copolymers (BCPs*), poly(benzyl methacrylate)-b-poly(d-cyclohexylglycolide) (PBnMA-PDCG) and PBnMA-b-poly(l-cyclohexyl glycolide) (PBnMA-PLCG), were synthesized for purposes of systematic comparison with polylactide (PLA)-based BCPs*, previously shown to exhibit chirality transfer from monomeric unit to the multichain domain morphology. Opposite-handed PCG helical chains in the enantiomeric BCPs* were identified by the vibrational circular dichroism (VCD) studies revealing transfer from chiral monomers to chiral intrachain conformation. We report further VCD evidence of chiral interchain interactions, consistent with some amounts of handed skew configurations of PCG segments in a melt state packing. Finally, we show by electron tomography [3D transmission electron microscope tomography (3D TEM)] that chirality at the monomeric and intrachain level ultimately manifests in the symmetry of microphase-separated, multichain morphologies: a helical phase (H*) of hexagonally, ordered, helically shaped tubular domains whose handedness agrees with the respective monomeric chirality. Critically, unlike previous PLA-based BCP*s, the lack of a competing crystalline state of the chiral PCGs allowed determination that H* is an equilibrium phase of chiral PBnMA-PCG. We compared different measures of chirality at the monomer scale for PLA and PCG, and argued, on the basis of comparison with mean-field theory results for chiral diblock copolymer melts, that the enhanced thermodynamic stability of the mesochiral H* morphology may be attributed to the relatively stronger chiral intersegment forces, ultimately tracing from the effects of a bulkier chiral side group on its main chain.
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Affiliation(s)
- Hsiao-Fang Wang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Kai-Chieh Yang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Wen-Chun Hsu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Jing-Yu Lee
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi 62142, Taiwan
| | - Jung-Tzu Hsu
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi 62142, Taiwan
| | - Gregory M Grason
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA 01003
| | - Edwin L Thomas
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX 77005
| | - Jing-Cherng Tsai
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi 62142, Taiwan;
| | - Rong-Ming Ho
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan;
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22
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Nikovia C, Theodoridis L, Alexandris S, Bilalis P, Hadjichristidis N, Floudas G, Pitsikalis M. Macromolecular Brushes by Combination of Ring-Opening and Ring-Opening Metathesis Polymerization. Synthesis, Self-Assembly, Thermodynamics, and Dynamics. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01905] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Christiana Nikovia
- Industrial Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
| | | | | | - Panayiotis Bilalis
- Physical Sciences and Engineering Division, Polymer Synthesis Laboratory, KAUST Catalysis Center, Thuwal 23955, Kingdom of Saudi Arabia
| | - Nikos Hadjichristidis
- Physical Sciences and Engineering Division, Polymer Synthesis Laboratory, KAUST Catalysis Center, Thuwal 23955, Kingdom of Saudi Arabia
| | - George Floudas
- Department of Physics, University of Ioannina, 45110 Ioannina, Greece
| | - Marinos Pitsikalis
- Industrial Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
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23
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Liang J, Deng J. Chiral Particles Consisting of Helical Polylactide and Helical Substituted Polyacetylene: Preparation and Synergistic Effects in Enantio-Differentiating Release. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00580] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Junya Liang
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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24
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Li Y, Yao Z, Wu L, Wang Z. Nonbirefringent bands in thin films of a copolymer melt: rapid rhythmic crystal growth with an unusual crystal–melt interface. CrystEngComm 2018. [DOI: 10.1039/c8ce00134k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Rhythmic-growth-induced nonbirefringent bands that are comprised of repetitive stacks of discrete flat-on lamellae along the growth directions are reported in a thin film of an asymmetric PCL-b-PEO during isothermal melt crystallization.
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Affiliation(s)
- Yiguo Li
- Anhui Collaborative Innovation Centre for Petrochemical New Materials
- School of Chemistry and Chemical Engineering
- Anqing Normal University
- Anqing 246011
- China
| | - Zhilong Yao
- Anhui Collaborative Innovation Centre for Petrochemical New Materials
- School of Chemistry and Chemical Engineering
- Anqing Normal University
- Anqing 246011
- China
| | - Lin Wu
- Anhui Key Laboratory of Optoelectronic and Magnetism Functional Materials
- Key Laboratory of Functional Coordination Compounds of Anhui Higher Education Institutes
- Anqing Normal University
- Anqing 246011
- China
| | - Zongbao Wang
- Faculty of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- China
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25
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Xu J, Zhang S, Guo B. Insights from polymer crystallization: Chirality, recognition and competition. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.10.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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