1
|
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.
Collapse
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
| |
Collapse
|
2
|
Cheng X, Gan Y, Zhang G, Song Q, Zhang Z, Zhang W. Conformationally supramolecular chirality prevails over configurational point chirality in side-chain liquid crystalline polymers. Chem Sci 2023; 14:5116-5124. [PMID: 37206386 PMCID: PMC10189893 DOI: 10.1039/d3sc00975k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/16/2023] [Indexed: 05/21/2023] Open
Abstract
In nature, the communication of primary amino acids in the polypeptides influences molecular-level packing, supramolecular chirality, and the resulting protein structures. In chiral side-chain liquid crystalline polymers (SCLCPs), however, the hierarchical chiral communication between supramolecular mesogens is still determined by the parent chiral source due to the intermolecular interactions. Herein, we present a novel strategy to enable the tunable chiral-to-chiral communication in azobenzene (Azo) SCLCPs, in which the chiroptical properties are not dominated by the configurational point chirality but by the conformationally supramolecular chirality that emerged. The communication of dyads biases supramolecular chirality with multiple packing preference, thereby overruling the configurational chirality of the stereocenter. The chiral communication mechanism between the side-chain mesogens is revealed through the systematic study of the chiral arrangement at the molecular level, including mesomorphic properties, stacking modes, chiroptical dynamics and further morphological dimensions.
Collapse
Affiliation(s)
- Xiaoxiao Cheng
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Yijing Gan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Gong Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Qingping Song
- School of Chemical and Environmental Engineering, Anhui Polytechnic University Wuhu 241000 P. R. China
| | - Zhengbiao Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Wei Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
- School of Chemical and Environmental Engineering, Anhui Polytechnic University Wuhu 241000 P. R. China
| |
Collapse
|
3
|
Yang KC, Reddy A, Tsai HW, Zhao W, Grason GM, Ho RM. Breaking Mirror Symmetry of Double Gyroids via Self-Assembly of Chiral Block Copolymers. ACS Macro Lett 2022; 11:930-934. [PMID: 35802510 DOI: 10.1021/acsmacrolett.2c00148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Significant enhancement of segment-scale chirality, as measured by vibrational circular dichroism (VCD), is observed in the helical phase (H*) of polylactide-based chiral block copolymers (BCPs*) due to the mesoscale chirality of the microphase-separated domains. Here, we report a weaker, yet meaningful, enhancement on the VCD signal of a double gyroid phase (DG) as compared to a double diamond phase (DD) and disordered phase from the same diblock BCPs*. Residual VCD enhancement indicates a weak degree of chiral symmetry breaking, implying the formation of a chiral double gyroid (DG*) instead of the canonical achiral form. Calculations on the basis of orientational self-consistent field theory, comparing coupling between the segmental-scale preference of an intradomain twist and morphological chirality, show that a transition between DG and DG* takes place above the critical chiral strength, driving a weak volume asymmetry between the two enantiomeric single networks of DG*. The formation of nanostructures with controllable mesoscale chiral asymmetry indicates a pathway for the amplification of optical activity driven by self-assembly.
Collapse
Affiliation(s)
- Kai-Chieh Yang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Abhiram Reddy
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Hsiu-Wen Tsai
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Wei Zhao
- SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510005, China
| | - Gregory M Grason
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Rong-Ming Ho
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| |
Collapse
|
4
|
Chiu PT, Sung YC, Yang KC, Tsai JC, Wang HF, Ho RM. Curving and Twisting in Self-Assembly of Triblock Terpolymers Driven by a Chiral End Block. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02421] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Po-Ting Chiu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Chuan Sung
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi 62142, Taiwan
| | - Kai-Chieh Yang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Jing-Cherng Tsai
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi 62142, Taiwan
| | - Hsiao-Fang Wang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Rong-Ming Ho
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| |
Collapse
|
5
|
Li H, Xiong B, Geng Z, Wang H, Gao Y, Gu P, Xie H, Xu J, Zhu J. Temperature- and Solvent-Mediated Confined Assembly of Semicrystalline Chiral Block Copolymers in Evaporative Emulsion Droplets. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01485] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Hao Li
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Bijin Xiong
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Zhen Geng
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Huayang Wang
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Yutong Gao
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Pan Gu
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Hongyan Xie
- China-Australia Institute for Advanced Materials and Manufacturing, Jiaxing University, Jiaxing 314000, China
| | - Jiangping Xu
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Jintao Zhu
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| |
Collapse
|
6
|
Yang KC, Chiu PT, Tsai HW, Ho RM. Self-Assembly of Semiflexible-Coil Chiral Block Copolymers under Various Segregation Strengths with Multiple Secondary Interactions. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01447] [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)
- Kai-Chieh Yang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Po-Ting Chiu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Hsiu-Wen Tsai
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Rong-Ming Ho
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| |
Collapse
|
7
|
Yuan J, Liu X, Wang Y, Zeng G, Li G, Dong XH, Wen T. Confined Self-Assemblies of Chiral Block Copolymers in Thin Films. ACS Macro Lett 2021; 10:1300-1305. [PMID: 35549051 DOI: 10.1021/acsmacrolett.1c00458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Self-assembly of chiral block copolymers (BCPs*) can give rise to ordered chiral nanostructures, that is, a helical phase (H* phase), via chirality transfer from the molecular level to mesoscale. In the present work, we reported the self-assembly of BCPs* under one-dimensional spatial confinement. The morphological dependence of self-assembled BCPs* on the molecular weights and the film thickness was investigated. As chiral nanostructures, the H* phase can be formed in bulk, nonchiral nanostructures that were observed in the thin films. Also, the topology effect of self-assembly of BCPs* was examined. The self-assembly of BCPs* with a star-shaped topology exhibited a distinct morphology compared with that of linear BCPs*. The present work provides new insight into the chirality transfer of macromolecules under spatial confinement.
Collapse
Affiliation(s)
- Jun Yuan
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China.,Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Xiang Liu
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China.,Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Yingying Wang
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China.,Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Guangjian Zeng
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China.,Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Gang Li
- Department of Ecology and Environment, Yuzhang Normal University, Nanchang 330103, China
| | - Xue-Hui Dong
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China.,Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Tao Wen
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China.,Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| |
Collapse
|
8
|
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: 82] [Impact Index Per Article: 27.3] [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.
Collapse
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
| |
Collapse
|
9
|
Yang KC, Ho RM. Spiral Hierarchical Superstructures from Twisted Ribbons of Self-Assembled Chiral Block Copolymers. ACS Macro Lett 2020; 9:1130-1134. [PMID: 35653203 DOI: 10.1021/acsmacrolett.0c00415] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Spiral hierarchical superstructures were found in the self-assembly of chiral block copolymers (BCPs*) composed of a chiral poly(l-lactide) (PLLA) and an achiral polystyrene (PS) as major and minor blocks, respectively. The PLLA helical chain with semiflexible rod-like character as compared to the random coil of PS results in self-assembly with a conformational asymmetry effect overwhelming the compositional one. Consequently, instead of the forming PS cylinder microdomains in the PLLA matrix, a smectic liquid-crystal-like bilayer sandwiched with PLLA and PS microdomains will be formed. Owing to twisting and bending due to the chiral cholesteric liquid-crystal-like force field combined with steric hindrance at the chiral interface, the forming bilayers (twisted ribbon) will develop into either a concentric lamellar texture from scrolling or roll-cake textures from spiraling. This study might bring a concept for the formation of spiral hierarchical superstructures from self-assembled bilayers for device application.
Collapse
Affiliation(s)
- Kai-Chieh Yang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Rong-Ming Ho
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| |
Collapse
|
10
|
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.
Collapse
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
| |
Collapse
|
11
|
Zeng G, Qiu L, Wen T. Recent advances in crystallization and self‐assembly of polypeptoid polymers. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Guangjian Zeng
- South China Advanced Institute for Soft Matter Science and TechnologySouth China University of Technology Guangzhou China
| | - Lu Qiu
- South China Advanced Institute for Soft Matter Science and TechnologySouth China University of Technology Guangzhou China
| | - Tao Wen
- South China Advanced Institute for Soft Matter Science and TechnologySouth China University of Technology Guangzhou China
| |
Collapse
|
12
|
Li BS, Huang X, Li H, Xia W, Xue S, Xia Q, Tang BZ. Solvent and Surface/Interface Effect on the Hierarchical Assemblies of Chiral Aggregation-Induced Emitting Molecules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:3805-3813. [PMID: 30767500 DOI: 10.1021/acs.langmuir.8b03358] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The core of aggregation-induced emitting (AIE) molecules was their aggregation behavior. It was, in essence, a self-assembly process driven by noncovalent interactions, which were governed not only by the chemical structures of the molecules but also by the conditions where the self-assemblies were formed. The self-assemblies of two AIE molecules, tetraphenylethene (TPE) derivatives carrying one valine attachment (TPE-Val) and two valine attachments (TPE-2Val), were studied. Both kinds of molecules self-assembled into supramolecular helical fibers with different handedness upon the addition of poor solvent to their solution. However, when deposited on air/water interface, both kinds of molecules formed aligned elementary helical fibers instead of supramolecular fibers. The lateral solvophobic effect exerted by water molecules caused a shift of the original noncovalent balance between molecules and solvent; thus, the supramolecular helical assemblies were unraveled into aligned helical elementary fibers. Similar elementary assemblies were formed on the surface of 3-aminopropyl triethoxysilane-modified mica, confirming the lateral solvophobic effect on the self-assemblies of the molecules.
Collapse
Affiliation(s)
- Bing Shi Li
- College of Chemistry and Environmental Engineering , Shenzhen University , 1066 Xueyuan Avenue , Nanshan, Shenzhen 518055 , China
| | - Xuejiao Huang
- College of Chemistry and Environmental Engineering , Shenzhen University , 1066 Xueyuan Avenue , Nanshan, Shenzhen 518055 , China
| | - Hongkun Li
- College of Chemistry and Environmental Engineering , Shenzhen University , 1066 Xueyuan Avenue , Nanshan, Shenzhen 518055 , China
- The Hong Kong University of Science & Technology (HKUST)-Shenzhen Research Institute , No. 9 Yuexing 1st Road, South Area, Hi-tech Park , Nanshan, Shenzhen 518057 , China
- Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , 50 Donghuan Road , Suzhou 215123 , China
| | - Wenjuan Xia
- College of Chemistry and Environmental Engineering , Shenzhen University , 1066 Xueyuan Avenue , Nanshan, Shenzhen 518055 , China
| | - Shan Xue
- College of Chemistry and Environmental Engineering , Shenzhen University , 1066 Xueyuan Avenue , Nanshan, Shenzhen 518055 , China
| | - Qing Xia
- College of Chemistry and Environmental Engineering , Shenzhen University , 1066 Xueyuan Avenue , Nanshan, Shenzhen 518055 , China
| | - Ben Zhong Tang
- The Hong Kong University of Science & Technology (HKUST)-Shenzhen Research Institute , No. 9 Yuexing 1st Road, South Area, Hi-tech Park , Nanshan, Shenzhen 518057 , China
| |
Collapse
|
13
|
Ge H, Zhang F, Huang H, He T. Interplay between Stereocomplexation and Microphase Separation in PS-b-PLLA-b-PDLA Triblock Copolymers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02627] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Huan Ge
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University
of
Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Fajun Zhang
- Institut für Angewandte Physik, Universität Tübingen, Auf der Morgenstelle 10, 72076 Tübingen, Germany
| | - Haiying Huang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University
of
Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Tianbai He
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University
of
Chinese Academy of Sciences, Beijing 100049, P. R. China
| |
Collapse
|
14
|
|