151
|
Anslyn EV. Art, auto-mechanics, and supramolecular chemistry. A merging of hobbies and career. Beilstein J Org Chem 2016; 12:362-76. [PMID: 26977197 PMCID: PMC4778509 DOI: 10.3762/bjoc.12.40] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 02/12/2016] [Indexed: 12/24/2022] Open
Abstract
While the strict definition of supramolecular chemistry is "chemistry beyond the molecule", meaning having a focus on non-covalent interactions, the field is primarily associated with the creation of synthetic receptors and self-assembly. For synthetic ease, the receptors and assemblies routinely possess a high degree of symmetry, which lends them an aspect of aesthetic beauty. Pictures of electron orbitals similarly can be seen as akin to works of art. This similarity was an early draw for me to the fields of supramolecular chemistry and molecular orbital theory, because I grew up in a household filled with art. In addition to art, my childhood was filled with repairing and constructing mechanical entities, such as internal combustion motors, where many components work together to achieve a function. Analogously, the field of supramolecular chemistry creates systems of high complexity that achieve functions or perform tasks. Therefore, in retrospect a career in supramolecular chemistry appears to be simply an extension of childhood hobbies involving art and auto-mechanics.
Collapse
Affiliation(s)
- Eric V Anslyn
- Department of Chemistry, University of Texas, Austin, TX 78712, USA
| |
Collapse
|
152
|
Xing P, Chen H, Ma M, Xu X, Hao A, Zhao Y. Light and cucurbit[7]uril complexation dual-responsiveness of a cyanostilbene-based self-assembled system. NANOSCALE 2016; 8:1892-1896. [PMID: 26750642 DOI: 10.1039/c5nr07873c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A cyanostilbene-based amphiphile (CS) was synthesized, which could self-assemble into non-emissive bilayer vesicles and ultra-thin ribbons. Cucurbit[7]uril (CB[7]) could form an inclusion complex with CS with a significant hypochrome effect, giving a strong blue emission from non-emissive species. CS underwent photoisomerization induced by light irradiation, which allowed the membrane contraction into smaller vesicles.
Collapse
Affiliation(s)
- Pengyao Xing
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China
| | - Hongzhong Chen
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore.
| | - Mingfang Ma
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China
| | - Xingdong Xu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore.
| | - Aiyou Hao
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore. and School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| |
Collapse
|
153
|
Wang A, Shi W, Huang J, Yan Y. Adaptive soft molecular self-assemblies. SOFT MATTER 2016; 12:337-357. [PMID: 26509717 DOI: 10.1039/c5sm02397a] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Adaptive molecular self-assemblies provide possibility of constructing smart and functional materials in a non-covalent bottom-up manner. Exploiting the intrinsic properties of responsiveness of non-covalent interactions, a great number of fancy self-assemblies have been achieved. In this review, we try to highlight the recent advances in this field. The following contents are focused: (1) environmental adaptiveness, including smart self-assemblies adaptive to pH, temperature, pressure, and moisture; (2) special chemical adaptiveness, including nanostructures adaptive to important chemicals, such as enzymes, CO2, metal ions, redox agents, explosives, biomolecules; (3) field adaptiveness, including self-assembled materials that are capable of adapting to external fields such as magnetic field, electric field, light irradiation, and shear forces.
Collapse
Affiliation(s)
- Andong Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Wenyue Shi
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Jianbin Huang
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Yun Yan
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| |
Collapse
|
154
|
Song Q, Jiao Y, Wang Z, Zhang X. Tuning the Energy Gap by Supramolecular Approaches: Towards Near-Infrared Organic Assemblies and Materials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:24-31. [PMID: 26741821 DOI: 10.1002/smll.201501661] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 07/21/2015] [Indexed: 06/05/2023]
Abstract
Near-infrared (NIR) organic materials are of great importance for both fundamental research and practical applications. While much effort has been taken to covalently design and synthesize NIR organic materials with a low energy gap, there are supramolecular approaches for tuning the energy gap to noncovalently fabricate NIR organic assemblies and materials. In this concept article, we summarize and discuss several supramolecular approaches, including the fabrication of charge transfer supramolecular complexes, the fabrication of supramolecular J-aggregates, and the fabrication of supramolecularly stabilized organic radicals. The nature of noncovalent interactions in supramolecular approaches can provide NIR organic assemblies and materials with unique properties such as reversibility, stimuli-responsiveness, recyclability, and adaptive abilities.
Collapse
Affiliation(s)
- Qiao Song
- The Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Yang Jiao
- The Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Zhiqiang Wang
- The Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Xi Zhang
- The Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| |
Collapse
|
155
|
Yuan C, Wu H, Jia M, Su P, Luo Z, Yao J. A theoretical study of weak interactions in phenylenediamine homodimer clusters. Phys Chem Chem Phys 2016; 18:29249-29257. [DOI: 10.1039/c6cp04922b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Utilizing dispersion-corrected density functional theory (DFT) calculations, we demonstrate the weak intermolecular interactions of phenylenediamine dimer (pdd) clusters, emphasizing the local lowest energy structures and decomposition of interaction energies by natural bond orbital (NBO) and atoms in molecule (AIM) analyses.
Collapse
Affiliation(s)
- Chengqian Yuan
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- CAS Key Laboratory of Photochemistry
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Haiming Wu
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- CAS Key Laboratory of Photochemistry
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Meiye Jia
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- CAS Key Laboratory of Photochemistry
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Peifeng Su
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry
- and College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
- China
| | - Zhixun Luo
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- CAS Key Laboratory of Photochemistry
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Jiannian Yao
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- CAS Key Laboratory of Photochemistry
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species
- Institute of Chemistry
- Chinese Academy of Sciences
| |
Collapse
|
156
|
Pfletscher M, Wölper C, Gutmann JS, Mezger M, Giese M. A modular approach towards functional supramolecular aggregates – subtle structural differences inducing liquid crystallinity. Chem Commun (Camb) 2016; 52:8549-52. [DOI: 10.1039/c6cc03966a] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A modular approach towards photo-responsive supramolecular liquid crystals is described, allowing efficient screening of complementary binding blocks for the design of functional materials.
Collapse
Affiliation(s)
- Michael Pfletscher
- Institut für Organische Chemie
- Universität Duisburg-Essen
- 45141 Essen
- Germany
| | - Christoph Wölper
- Institut für Anorganische Chemie
- Universität Duisburg-Essen
- 45141 Essen
- Germany
| | - Jochen S. Gutmann
- Institut für Physikalische Chemie und CENIDE
- Universität Duisburg-Essen
- 45141 Essen
- Germany
| | - Markus Mezger
- Institut für Physik
- Johannes Gutenberg-Universität Mainz und Max-Planck-Institut für Polymerforschung
- 55021 Mainz
- Germany
| | - Michael Giese
- Institut für Organische Chemie
- Universität Duisburg-Essen
- 45141 Essen
- Germany
| |
Collapse
|
157
|
Li Z, Lu W, Ngai T, Le X, Zheng J, Zhao N, Huang Y, Wen X, Zhang J, Chen T. Mussel-inspired multifunctional supramolecular hydrogels with self-healing, shape memory and adhesive properties. Polym Chem 2016. [DOI: 10.1039/c6py01112h] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel multifunctional supramolecular hydrogel with self-healing, shape memory and adhesive properties is successfully developed on the basis of dynamic phenylboronic acid (PBA)–catechol interactions.
Collapse
Affiliation(s)
- Zhaowen Li
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- China
- Ningbo Institute of Material Technology and Engineering
| | - Wei Lu
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- China
| | - To Ngai
- Department of Chemistry
- The Chinese University of Hong Kong
- Shatin
- China
| | - Xiaoxia Le
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- China
| | - Jing Zheng
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- China
| | - Ning Zhao
- Beijing National Laboratory for Molecular Sciences
- Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Youju Huang
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- China
| | - Xiufang Wen
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - Jiawei Zhang
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- China
| | - Tao Chen
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- China
| |
Collapse
|
158
|
Gao M, Han S, Hu Y, Dynes JJ, Liu X, Wang D. A pH-driven molecular shuttle based on rotaxane-bridged periodic mesoporous organosilicas with responsive release of guests. RSC Adv 2016. [DOI: 10.1039/c5ra27955k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
A pH-driven molecular shuttle was immobilized into the framework of the PMOs in which the β-CDs could shuttle mechanically.
Collapse
Affiliation(s)
- Meng Gao
- Key Lab of Colloid and Interface Chemistry Ministry of Education
- Shandong University
- Jinan 250100
- P. R. China
| | - Shuhua Han
- Key Lab of Colloid and Interface Chemistry Ministry of Education
- Shandong University
- Jinan 250100
- P. R. China
| | | | | | - Xiangguo Liu
- Division of Cell Biology
- School of Life Sciences
- Shandong University
- Jinan
- P. R. China
| | | |
Collapse
|
159
|
Xiao H, Lu W, Le X, Ma C, Li Z, Zheng J, Zhang J, Huang Y, Chen T. A multi-responsive hydrogel with a triple shape memory effect based on reversible switches. Chem Commun (Camb) 2016; 52:13292-13295. [DOI: 10.1039/c6cc06813h] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel multi-responsive shape memory hydrogel is described.
Collapse
Affiliation(s)
- He Xiao
- Ningbo Institute of Material Technology and Engineering
- Key Laboratory of Marine Materials and Related Technologies
- Chinese Academy of Science
- Ningbo
- China
| | - Wei Lu
- Ningbo Institute of Material Technology and Engineering
- Key Laboratory of Marine Materials and Related Technologies
- Chinese Academy of Science
- Ningbo
- China
| | - Xiaoxia Le
- Ningbo Institute of Material Technology and Engineering
- Key Laboratory of Marine Materials and Related Technologies
- Chinese Academy of Science
- Ningbo
- China
| | - Chunxin Ma
- Ningbo Institute of Material Technology and Engineering
- Key Laboratory of Marine Materials and Related Technologies
- Chinese Academy of Science
- Ningbo
- China
| | - Zhaowen Li
- Ningbo Institute of Material Technology and Engineering
- Key Laboratory of Marine Materials and Related Technologies
- Chinese Academy of Science
- Ningbo
- China
| | - Jing Zheng
- Ningbo Institute of Material Technology and Engineering
- Key Laboratory of Marine Materials and Related Technologies
- Chinese Academy of Science
- Ningbo
- China
| | - Jiawei Zhang
- Ningbo Institute of Material Technology and Engineering
- Key Laboratory of Marine Materials and Related Technologies
- Chinese Academy of Science
- Ningbo
- China
| | - Youju Huang
- Ningbo Institute of Material Technology and Engineering
- Key Laboratory of Marine Materials and Related Technologies
- Chinese Academy of Science
- Ningbo
- China
| | - Tao Chen
- Ningbo Institute of Material Technology and Engineering
- Key Laboratory of Marine Materials and Related Technologies
- Chinese Academy of Science
- Ningbo
- China
| |
Collapse
|
160
|
Yang PP, Zhao XX, Xu AP, Wang L, Wang H. Reorganization of self-assembled supramolecular materials controlled by hydrogen bonding and hydrophilic–lipophilic balance. J Mater Chem B 2016; 4:2662-2668. [DOI: 10.1039/c6tb00097e] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The process of in situ morphology transformation of the polymeric peptide (BKP) from nanoparticles to nanofibers controlled by H-bonds and hydrophobic interactions is explored. Increasing hydrophilic chain length of the molecule accelerates the morphology transformation.
Collapse
Affiliation(s)
- Pei-Pei Yang
- CAS Center for Excellence in Nanoscience
- Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing
- China
| | - Xiao-Xiao Zhao
- CAS Center for Excellence in Nanoscience
- Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing
- China
| | - An-Ping Xu
- CAS Center for Excellence in Nanoscience
- Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing
- China
| | - Lei Wang
- CAS Center for Excellence in Nanoscience
- Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing
- China
| | - Hao Wang
- CAS Center for Excellence in Nanoscience
- Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing
- China
| |
Collapse
|
161
|
Yu Z, Lan Y, Parker RM, Zhang W, Deng X, Scherman OA, Abell C. Dual-responsive supramolecular colloidal microcapsules from cucurbit[8]uril molecular recognition in microfluidic droplets. Polym Chem 2016. [DOI: 10.1039/c6py01171c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Thermal and light dual-responsive supramolecular colloidal microcapsules have been successfully prepared by combining cucurbit[8]uril-based host–guest recognition with the self-assembly of colloidal particles within microfluidic droplets.
Collapse
Affiliation(s)
- Ziyi Yu
- Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
| | - Yang Lan
- Melville Laboratory for Polymer Synthesis
- Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
| | | | - Wangqing Zhang
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Xu Deng
- Institute of Fundamental and Frontier Sciences
- University of Electronic Science and Technology of China
- Chengdu 610054
- China
| | - Oren A. Scherman
- Melville Laboratory for Polymer Synthesis
- Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
| | - Chris Abell
- Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
| |
Collapse
|
162
|
Giese M, Albrecht M, Rissanen K. Experimental investigation of anion–π interactions – applications and biochemical relevance. Chem Commun (Camb) 2016; 52:1778-95. [DOI: 10.1039/c5cc09072e] [Citation(s) in RCA: 177] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Anion–π interactions, intuitively repulsive forces, turned from controversial to a well-established non-covalent interaction over the past quarter of a century.
Collapse
Affiliation(s)
- M. Giese
- Institut für Organische Chemie
- Universität Duisburg Essen
- 45141 Essen
- Germany
| | - M. Albrecht
- Institut für Organische Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - K. Rissanen
- University of Jyvaskyla
- Department of Chemistry
- Nanoscience Center
- P.O. Box. 35
- FI-40014 University of Jyvaskyla
| |
Collapse
|
163
|
Xu JF, Huang Z, Chen L, Qin B, Song Q, Wang Z, Zhang X. Supramolecular Polymerization Controlled by Reversible Conformational Modulation. ACS Macro Lett 2015; 4:1410-1414. [PMID: 35614792 DOI: 10.1021/acsmacrolett.5b00831] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report a new method for fabricating supramolecular polymers with controlled structure and molecular weight through reversible conformational modulation. To this end, the crown-ether-based "taco complex" was introduced. We prepared a monomer containing a bis(m-phenylene)-32-crown-10 in the core, which can supramolecularly polymerize efficiently in solution. When the conformation of the crown ether core was folded into a taco complex, the linear supramolecular polymerization could be significantly depressed, thus decreasing the molecular weight of the supramolecular polymer. In addition, extracting the depolymerizing agent with aqueous solution of cucurbit[7]uril could disassociate the taco complex and regenerate the supramolecular polymer with molecular weight as high as before. It is anticipated that this study can provide a facile and general methodology for controllable supramolecular polymerization.
Collapse
Affiliation(s)
- Jiang-Fei Xu
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Zehuan Huang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Linghui Chen
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Bo Qin
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Qiao Song
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Zhiqiang Wang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xi Zhang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| |
Collapse
|
164
|
Ramsay WJ, Foster JA, Moore KL, Ronson TK, Mirgalet RJ, Jefferson DA, Nitschke JR. Au ICl-bound N-heterocyclic carbene ligands form MII4(LAuCl) 6 integrally gilded cages. Chem Sci 2015; 6:7326-7331. [PMID: 28757991 PMCID: PMC5512534 DOI: 10.1039/c5sc03065j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 09/23/2015] [Indexed: 11/21/2022] Open
Abstract
The incorporation of an N-heterocyclic carbene (NHC) moiety into a self-assembled MII4L6 cage framework required the NHC first to be metallated with gold(i). Bimetallic cages could then be constructed using zinc(ii) and cadmium(ii) templates, showing weak luminescence. The cages were destroyed by the addition of further gold(i) in the form of AuI(2,4,6-trimethoxybenzonitrile)2SbF6, which caused the reversibly-formed cages to disassemble and controllably release the AuI-NHC subcomponent into solution. This release in turn induced the growth of gold nanoparticles. The rate of dianiline release could be tuned by capsule design or through the addition of chemical stimuli, with different release profiles giving rise to different nanoparticle morphologies.
Collapse
Affiliation(s)
- William J Ramsay
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - Jonathan A Foster
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - Katharine L Moore
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - Tanya K Ronson
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - Raphaël J Mirgalet
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - David A Jefferson
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| | - Jonathan R Nitschke
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , UK .
| |
Collapse
|
165
|
de León AS, Muñoz-Bonilla A, Gallardo A, Fernandez-Mayoralas A, Bernard J, Rodríguez-Hernández J. Straightforward functionalization of breath figures: Simultaneous orthogonal host–guest and pH-responsive interfaces. J Colloid Interface Sci 2015. [DOI: 10.1016/j.jcis.2015.06.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
166
|
Lei Q, Jia HZ, Chen WH, Rong L, Chen S, Luo GF, Qiu WX, Zhang XZ. A Facile Multifunctionalized Gene Delivery Platform Based on α,β Cyclodextrin Dimers. ACS Biomater Sci Eng 2015; 1:1151-1162. [DOI: 10.1021/acsbiomaterials.5b00307] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Qi Lei
- Key Laboratory
of Biomedical
Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, Peoples’ Republic of China
| | - Hui-Zhen Jia
- Key Laboratory
of Biomedical
Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, Peoples’ Republic of China
| | - Wei-Hai Chen
- Key Laboratory
of Biomedical
Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, Peoples’ Republic of China
| | - Lei Rong
- Key Laboratory
of Biomedical
Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, Peoples’ Republic of China
| | - Si Chen
- Key Laboratory
of Biomedical
Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, Peoples’ Republic of China
| | - Guo-Feng Luo
- Key Laboratory
of Biomedical
Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, Peoples’ Republic of China
| | - Wen-Xiu Qiu
- Key Laboratory
of Biomedical
Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, Peoples’ Republic of China
| | - Xian-Zheng Zhang
- Key Laboratory
of Biomedical
Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, Peoples’ Republic of China
| |
Collapse
|
167
|
Ahmadi M, Hawke LGD, Goldansaz H, van Ruymbeke E. Dynamics of Entangled Linear Supramolecular Chains with Sticky Side Groups: Influence of Hindered Fluctuations. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00733] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Mostafa Ahmadi
- Department
of Polymer Engineering and Color Technology, Amirkabir University of Technology, No. 424, Hafez Avenue, Tehran 15875-4413, Iran
| | - Laurence G. D. Hawke
- Bio
and Soft Matter Division (BSMA), Institut de la Matière Condensée
et des Nanosciences (IMCN), Université catholique de Louvain, Place Croix du Sud 1, 1348 Louvain-la-Neuve, Belgium
| | - Hadi Goldansaz
- Bio
and Soft Matter Division (BSMA), Institut de la Matière Condensée
et des Nanosciences (IMCN), Université catholique de Louvain, Place Croix du Sud 1, 1348 Louvain-la-Neuve, Belgium
| | - Evelyne van Ruymbeke
- Bio
and Soft Matter Division (BSMA), Institut de la Matière Condensée
et des Nanosciences (IMCN), Université catholique de Louvain, Place Croix du Sud 1, 1348 Louvain-la-Neuve, Belgium
| |
Collapse
|
168
|
Wang Y, Du J, Wang Y, Jin Q, Ji J. Pillar[5]arene based supramolecular prodrug micelles with pH induced aggregate behavior for intracellular drug delivery. Chem Commun (Camb) 2015; 51:2999-3002. [PMID: 25598131 DOI: 10.1039/c4cc09274k] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A novel type of dual pH-responsive supramolecular prodrug micelles based on host-guest interactions of water-soluble pillar[5]arene (WP5) and methyl viologen functioned doxorubicin (MV-DOX) was prepared. It was found that the prodrug micelles could be aggregated upon acidic condition, which led to enhanced accumulation and better therapy effect.
Collapse
Affiliation(s)
- Yin Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | | | | | | | | |
Collapse
|
169
|
Baburkin PO, Komarov PV, Khizhnyak SD, Pakhomov PM. Simulation of gelation process in cysteine–silver solution by dissipative particle dynamics method. COLLOID JOURNAL 2015. [DOI: 10.1134/s1061933x15050026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
170
|
Chen WH, Lei Q, Luo GF, Jia HZ, Hong S, Liu YX, Cheng YJ, Zhang XZ. Rational Design of Multifunctional Gold Nanoparticles via Host-Guest Interaction for Cancer-Targeted Therapy. ACS APPLIED MATERIALS & INTERFACES 2015; 7:17171-17180. [PMID: 26192215 DOI: 10.1021/acsami.5b04031] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A versatile gold nanoparticle-based multifunctional nanocomposite AuNP@CD-AD-DOX/RGD was constructed flexibly via host-guest interaction for targeted cancer chemotherapy. The pH-sensitive anticancer prodrug AD-Hyd-DOX and the cancer-targeted peptide AD-PEG8-GRGDS were modified on the surface of AuNP@CD simultaneously, which endowed the resultant nanocomposite with the capability to selectively eliminate cancer cells. In vitro studies indicated that the AuNP@CD-AD-DOX/RGD nanocomposite was preferentially uptaken by cancer cells via receptor-mediated endocytosis. Subsequently, anticancer drug DOX was released rapidly upon the intracellular trigger of the acid microenvirenment of endo/lysosomes, inducing apoptosis in cancer cells. As the ideal drug nanocarrier, the multifunctional gold nanoparticles with the active targeting and controllable intracellular release ability hold the great potential in cancer therapy.
Collapse
|
171
|
Xu XD, Zhao L, Qu Q, Wang JG, Shi H, Zhao Y. Imaging-Guided Drug Release from Glutathione-Responsive Supramolecular Porphysome Nanovesicles. ACS APPLIED MATERIALS & INTERFACES 2015; 7:17371-17380. [PMID: 26186168 DOI: 10.1021/acsami.5b06026] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Drug delivery systems that can be employed to load anticancer drugs and release them triggered by a specific stimulus, such as glutathione, are of great importance in cancer therapy. In this study, supramolecular porphysome nanovesicles that were self-assembled by amphiphilic porphyrin derivatives were successfully constructed, mainly driven by the π-π stacking, hydrogen bonding, and hydrophobic interactions, and were used as carriers of anticancer drugs. The nanovesicles are monodispersed in shape and uniform in size. The drug loading and in vitro drug release investigations indicate that these nanovesicles are able to encapsulate doxorubicin (DOX) to achieve DOX-loaded nanovesicles, and the nanovesicles could particularly release the loaded drug triggered by a high concentration of glutathione (GSH). More importantly, the drug release in cancer cells could be monitored by fluorescent recovery of the porphyrin derivative. Cytotoxicity experiments show that the DOX-loaded nanovesicles possess comparable therapeutic effect to cancer cells as free DOX. This study presents a new strategy in the fabrication of versatile anticancer drug nanocarriers with stimuli-responsive properties. Thus, the porphysome nanovesicles demonstrated here might offer an opportunity to bridge the gap between intelligent drug delivery systems and imaging-guided drug release.
Collapse
Affiliation(s)
- Xing-Dong Xu
- †Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Lingzhi Zhao
- †Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Qiuyu Qu
- †Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Jin-Gui Wang
- †Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Huifang Shi
- †Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Yanli Zhao
- †Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
- ‡School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| |
Collapse
|
172
|
Zhang Y, Sun J. Multilevel and Multicomponent Layer-by-Layer Assembly for the Fabrication of Nanofibrillar Films. ACS NANO 2015; 9:7124-7132. [PMID: 26154064 DOI: 10.1021/acsnano.5b01832] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, we demonstrate multilevel and multicomponent layer-by-layer (LbL) assembly as a convenient and generally applicable method for the fabrication of nanofibrillar films by exploiting the dynamic nature of polymeric complexes. The alternate deposition of poly(allylamine hydrochloride)-methyl red (PAH-MR) complexes with poly(acrylic acid) (PAA) produces nanofibrillar PAH-MR/PAA films, which involves the disassembly of PAH-MR complexes, the subsequent assembly of PAH with PAA, and the PAA-induced assembly of MR molecules into MR nanofibrils via a π-π stacking interaction. The aqueous solution of weak polyelectrolyte PAA with a low solution pH plays an important role in fabricating nanofibrillar PAH-MR/PAA films because proton transfer from acidic PAA to MR molecules induces the formation of MR nanofibrils. The generality of the multilevel and multicomponent LbL assembly is verified by alternate assembly of complexes of 1-pyrenylbutyric acid (PYA) and PAH with PAA to fabricate PAH-PYA/PAA films with organized nanofibrillar structures. Unlike the traditional static LbL assembly, the multilevel and multicomponent LbL assembly is dynamic and more flexible and powerful in controlling the interfacial assembly process and in fabricating composite films with sophisticated structures. These characteristics of multilevel and multicomponent LbL assembly will enrich the functionalities of the LbL-assembled films.
Collapse
Affiliation(s)
- Yuanyuan Zhang
- State Key Laboratory of Supramolecular Structure and Materials, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Junqi Sun
- State Key Laboratory of Supramolecular Structure and Materials, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
| |
Collapse
|
173
|
Xiang Y, Moulin E, Buhler E, Maaloum M, Fuks G, Giuseppone N. Hydrogen-Bonded Multifunctional Supramolecular Copolymers in Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:7738-7748. [PMID: 26087392 DOI: 10.1021/acs.langmuir.5b01093] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We have investigated the self-assembly in water of molecules having a single hydrophobic bis-urea domain linked to different hydrophilic functional side chains, i.e., bioactive peptidic residues and fluorescent cyanine dyes. By using a combination of spectroscopy, scattering, and microscopy techniques, we show that each one of these molecules can individually produce well-defined nanostructures such as twisted ribbons, two-dimensional plates, or branched fibers. Interestingly, when these monomers of different functionalities are mixed in an equimolar ratio, supramolecular copolymers are preferred to narcissistic segregation. Radiation scattering and imaging techniques demonstrate that one of the molecular units dictates the formation of a preferential nanostructure, and optical spectroscopies reveal the alternated nature of the copolymerization process. This work illustrates how social self-sorting in H-bond supramolecular polymers can give straightforward access to multifunctional supramolecular copolymers.
Collapse
Affiliation(s)
- Yunjie Xiang
- †SAMS research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84087, 67034 Strasbourg Cedex 2, France
| | - Emilie Moulin
- †SAMS research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84087, 67034 Strasbourg Cedex 2, France
| | - Eric Buhler
- ‡Matière et Systèmes Complexes (MSC) Laboratory, University of Paris Diderot-Paris VII, UMR 7057, Bâtiment Condorcet, 75205 Paris Cedex 13, France
| | - Mounir Maaloum
- †SAMS research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84087, 67034 Strasbourg Cedex 2, France
| | - Gad Fuks
- †SAMS research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84087, 67034 Strasbourg Cedex 2, France
| | - Nicolas Giuseppone
- †SAMS research group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84087, 67034 Strasbourg Cedex 2, France
| |
Collapse
|
174
|
Xu G, Li Q, Chen X. Nanobelts of hexagonal columnar crystal lattice through ionic self-assembly. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3682-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
175
|
Wang S, Ding XH, Li YH, Huang W. Effects of strong hydrogen bonds and weak intermolecular interactions on supramolecular assemblies of 4-fluorobenzylamine. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.02.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
176
|
Xu JF, Chen L, Zhang X. How to Make Weak Noncovalent Interactions Stronger. Chemistry 2015; 21:11938-46. [DOI: 10.1002/chem.201500568] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Indexed: 12/20/2022]
|
177
|
Yin S, Dong L, Xia Y, Dong B, He X, Chen D, Qiu H, Song B. Controlled self-assembly of a pyrene-based bolaamphiphile by acetate ions: from nanodisks to nanofibers by fluorescence enhancement. SOFT MATTER 2015; 11:4424-4429. [PMID: 25925332 DOI: 10.1039/c5sm00356c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this paper, a pyrene moiety is incorporated into a bolaamphiphile to form a novel molecule denoted PRB. Above the critical micelle concentration, PRB forms nanodisks in the aqueous solution. The addition of acetate ions induces a morphological change in self-assembled aggregates, which convert into nanofibers with a diameter of several nanometers. More interestingly, along with the morphological change, the fluorescence of the assemblies was enhanced concomitantly, which can be attributed to the binding effect of acetate ions on pyridinium head groups of PRB.
Collapse
Affiliation(s)
- Shouchun Yin
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China.
| | | | | | | | | | | | | | | |
Collapse
|
178
|
Tonga GY, Mizuhara T, Saha K, Jiang Z, Hou S, Das R, Rotello VM. Binding Studies of Cucurbit[7]uril with Gold Nanoparticles Bearing Different Surface Functionalities. Tetrahedron Lett 2015; 56:3653-3657. [PMID: 26074630 PMCID: PMC4461275 DOI: 10.1016/j.tetlet.2015.04.125] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Host-guest interactions between a synthetic receptor, cucurbit[7]uril (CB[7]), and gold nanoparticles (AuNPs) have been quantified using isothermal titration calorimetry. AuNPs were functionalized with ligands containing tertiary or quaternary benzylamine derivatives, with electron donating or withdrawing groups at the para position of the benzene ring. Analysis of binding interactions reveals that functional groups at the para position have no significant effect on binding constant. However, headgroups bearing a permanent positive charge increased the binding of AuNPs to CB[7] ten-fold compared to monomethyl counterparts.
Collapse
Affiliation(s)
- Gulen Yesilbag Tonga
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Tsukasa Mizuhara
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Krishnendu Saha
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Ziwen Jiang
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Singyuk Hou
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Riddha Das
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Vincent M. Rotello
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
| |
Collapse
|
179
|
Liao X, Guo L, Chang J, Liu S, Xie M, Chen G. Thermoresponsive AuNPs Stabilized by Pillararene-Containing Polymers. Macromol Rapid Commun 2015; 36:1492-7. [DOI: 10.1002/marc.201500167] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 05/03/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaojuan Liao
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200241 China
- State Key Laboratory of Molecular Engineering of Polymers; Department of Macromolecular Science; Fudan University; Shanghai 200433 China
| | - Lei Guo
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200241 China
| | - Junxia Chang
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200241 China
| | - Sha Liu
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200241 China
| | - Meiran Xie
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200241 China
| | - Guosong Chen
- State Key Laboratory of Molecular Engineering of Polymers; Department of Macromolecular Science; Fudan University; Shanghai 200433 China
| |
Collapse
|
180
|
Kageyama Y, Ikegami T, Hiramatsu N, Takeda S, Sugawara T. Structure and growth behavior of centimeter-sized helical oleate assemblies formed with assistance of medium-length carboxylic acids. SOFT MATTER 2015; 11:3550-3558. [PMID: 25781720 DOI: 10.1039/c5sm00370a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The nonequilibrium organization of self-assemblies from small building-block molecules offers an attractive and essential means to develop advanced functional materials and to understand the intrinsic nature of life systems. Fatty acids are well-known amphiphiles that form self-assemblies of several shapes. Here, we found that the lengths of helical structures of oleic acid formed in a buffered aqueous solution are dramatically different by the presence or absence of certain amphiphilic carboxylic acids. For example, under the coexistence of a small amount of N-decanoyl-l-alanine, we observed the formation of over 1 centimeter-long helical assemblies of oleate with a regular pitch and radius, whereas mainly less than 100 μm-long helices formed without this additive. Such long helical assemblies are unique in terms of their highly dimensional helical structure and growth dynamics. Results from the real-time observation of self-assembly formation, site-selective small-angle X-ray scattering, high-performance liquid chromatography analysis, and pH titration experiments suggested that the coexisting carboxylates assist in elongation by supplying oleate molecules to a scaffold for oleate helical assembly.
Collapse
Affiliation(s)
- Yoshiyuki Kageyama
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.
| | | | | | | | | |
Collapse
|
181
|
Tang S, Wang M, Olsen BD. Anomalous self-diffusion and sticky Rouse dynamics in associative protein hydrogels. J Am Chem Soc 2015; 137:3946-57. [PMID: 25764061 DOI: 10.1021/jacs.5b00722] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Natural and synthetic materials based on associating polymers possess diverse mechanical behavior, transport properties and responsiveness to external stimuli. Although much is known about their dynamics on the molecular and macroscopic level, knowledge of self-diffusive dynamics of the network-forming constituents remains limited. Using forced Rayleigh scattering, anomalous self-diffusion is observed in model associating protein hydrogels originating from the interconversion between species that diffuse in both the molecular and associated state. The diffusion can be quantitatively modeled using a two-state model for polymers in the gel, where diffusivity in the associated state is critical to the super diffusive behavior. The dissociation time from bulk rheology measurements was 2-3 orders of magnitude smaller than the one measured by diffusion, because the former characterizes submolecular dissociation dynamics, whereas the latter depicts single protein molecules completely disengaging from the network. Rheological data also show a sticky Rouse-like relaxation at long times due to collective relaxation of large groups of proteins, suggesting mobility of associated molecules. This study experimentally demonstrates a hierarchy of relaxation processes in associating polymer networks, and it is anticipated that the results can be generalized to other associative systems to better understand the relationship of dynamics among sticky bonds, single molecules, and the entire network.
Collapse
Affiliation(s)
- Shengchang Tang
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Muzhou Wang
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Bradley D Olsen
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
182
|
Kawata Y, Yamamoto T, Kihara H, Ohno K. Dual self-healing abilities of composite gels consisting of polymer-brush-afforded particles and an azobenzene-doped liquid crystal. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4185-4191. [PMID: 25686486 DOI: 10.1021/am5084573] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We prepared the composite gels from polymer-brush-afforded silica particles (P-SiPs) and an azobenzene-doped liquid crystal, and investigated their inner structure, dynamic viscoelastic properties, thermo- and photoresponsive properties, and self-healing behaviors. It was found that the composite gels had a sponge-like inner structure formed with P-SiPs and exhibited good elastic property and shape recoverability. The surface dents made on the composite gel could be repaired spontaneously at room temperature. Moreover, the composite gel exhibited a gel-sol transition induced by the trans-cis photoisomerization of the azo dye, and the transition could be used as a mending mechanism for surface cracks. Consequently, we successfully developed a material exhibiting two types of self-healing abilities simultaneously: (1) spontaneous repair of surface dents by means of the excellent elasticity of the composite gel and (2) light-assisted mending of surface cracks by photoinduced gel-sol transition.
Collapse
Affiliation(s)
- Yuki Kawata
- Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | | | | | | |
Collapse
|
183
|
Yang X, Yu H, Wang L, Tong R, Akram M, Chen Y, Zhai X. Self-healing polymer materials constructed by macrocycle-based host-guest interactions. SOFT MATTER 2015; 11:1242-1252. [PMID: 25614350 DOI: 10.1039/c4sm02372b] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Self-healing polymers, which can spontaneously recover themselves after being ruptured, result in enhanced lifetimes for materials and open up a fascinating direction in material science. Macrocycle-based host-guest interactions, one of the most crucial non-covalent interactions, play a key role in self-healing material fabrication. This review aims to highlight the very recent and important progress made in the area of self-healing polymer materials by focusing on cyclodextrins (CDs), crown ethers, cucurbit[n]urils (CBs), calix[n]arenes and pillar[n]arenes with special guest groups and tailored structures. In addition, we also propose future research directions and hope that this review can in a way reflect the current situation and future trends in this developing area.
Collapse
Affiliation(s)
- Xianpeng Yang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China.
| | | | | | | | | | | | | |
Collapse
|
184
|
Goldansaz H, Voleppe Q, Piogé S, Fustin CA, Gohy JF, Brassinne J, Auhl D, van Ruymbeke E. Controlling the melt rheology of linear entangled metallo-supramolecular polymers. SOFT MATTER 2015; 11:762-774. [PMID: 25492131 DOI: 10.1039/c4sm02319f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We study in the melt the linear viscoelastic properties of supramolecular assemblies obtained by adding different amounts of nickel ions to linear entangled poly(ethylene oxide) (PEO) building blocks end-functionalized by a terpyridine group. We first show that the elasticity of these supramolecular assemblies is mainly governed by the entanglement dynamics of the building blocks, while the supramolecular interactions delay or suppress their relaxation. By adjusting the amount of metal ions, the relaxation time as well as the level of the low-frequency plateau of these supramolecular assemblies can be controlled. In particular, the addition of metal ions above the 1:2 metal ion/terpyridine stoichiometric ratio allows secondary supramolecular interactions to appear, which are able to link the linear supramolecular assemblies and thus, lead to the reversible gelation of the system. By comparing the rheological behavior of different linear PEO samples, bearing or not functionalized chain-ends, we show that these extra supramolecular bonds are partially due to the association between the excess of metal ions and the oxygen atoms of the PEO chains. We also investigate the possible role played by the terpyridine groups in the formation of these secondary supramolecular interactions.
Collapse
Affiliation(s)
- H Goldansaz
- Bio and Soft Matter, IMCN, Université catholique de Louvain, Belgium.
| | | | | | | | | | | | | | | |
Collapse
|
185
|
Shi Y, Yang Z, Liu H, Li Z, Tian Y, Wang F. Mechanically Linked Poly[2]rotaxanes Constructed via the Hierarchical Self-Assembly Strategy. ACS Macro Lett 2015; 4:6-10. [PMID: 35596394 DOI: 10.1021/mz500659f] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Mechanically linked poly[2]rotaxanes have been successfully constructed via the hierarchical self-assembly strategy. The integration of two noninterfering noncovalent recognition motifs facilitates chain extension of the B21C7-based [2]rotaxane monomer, demonstrating the capabilities to form self-standing films with preferable transparency and softness.
Collapse
Affiliation(s)
- Yonggang Shi
- Key Laboratory of Soft Matter
Chemistry, Collaborative Innovation Center of Chemistry for Energy
Materials, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Zhishuai Yang
- Key Laboratory of Soft Matter
Chemistry, Collaborative Innovation Center of Chemistry for Energy
Materials, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Huaqing Liu
- Key Laboratory of Soft Matter
Chemistry, Collaborative Innovation Center of Chemistry for Energy
Materials, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Zijian Li
- Key Laboratory of Soft Matter
Chemistry, Collaborative Innovation Center of Chemistry for Energy
Materials, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Yukui Tian
- Key Laboratory of Soft Matter
Chemistry, Collaborative Innovation Center of Chemistry for Energy
Materials, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Feng Wang
- Key Laboratory of Soft Matter
Chemistry, Collaborative Innovation Center of Chemistry for Energy
Materials, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| |
Collapse
|
186
|
Zhu M, Aryal GH, Zhang N, Zhang H, Su X, Schmehl R, Liu X, Hu J, Wei J, Jayawickramarajah J. Host-guest interactions derived multilayer perylene diimide thin film constructed on a scaffolding porphyrin monolayer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:578-586. [PMID: 25495000 DOI: 10.1021/la504297w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The development of methods to grow well-ordered chromophore thin films on solid substrates is of importance because such surface-associated arrays have potential applications in the generation of functional electronic and optical materials and devices. In this article, we demonstrate a straightforward layer-by-layer (LBL) supramolecular deposition strategy to prepare numerous layers (up to 19) of functionalized perylene diimide (PDI) chromophores built upon a covalent scaffolding multivalent porphyrin monolayer. Our thin film formation strategy employs water as the immersion solvent and exploits the β-cyclodextrin-adamantane host-guest couple in addition to PDI based aromatic stacking. Within the resultant film the porphyrin scaffold is oriented close to parallel to the glass substrate while the PDI chromophores are aligned closer to the surface normal. Together, the porphyrin monolayer and the multi-PDI layers exhibit a large absorption bandwidth in the visible spectrum. Importantly, because a self-assembly strategy was utilized, when a single monolayer of PDI is deposited on the porphyrin scaffolding layer, this PDI monolayer can be readily disassembled by washing with DMF leading to the regeneration of the porphyrin monolayer. The PDI thin film can subsequently be regrown from the regenerated porphyrin surface. The reported LBL strategy will be of broad interest for researchers developing well-organized chromophoric films and materials due to its simplicity as well as the added advantage of being performed in sustainable and cost-effective aqueous media.
Collapse
Affiliation(s)
- Mengyuan Zhu
- Department of Chemistry and ‡Department of Physics & Engineering Physics, Tulane University , New Orleans, Louisiana 70118, United States
| | | | | | | | | | | | | | | | | | | |
Collapse
|
187
|
Lehn JM. Perspectives in chemistry--aspects of adaptive chemistry and materials. Angew Chem Int Ed Engl 2015; 54:3276-89. [PMID: 25582911 DOI: 10.1002/anie.201409399] [Citation(s) in RCA: 333] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Indexed: 12/11/2022]
Abstract
Chemistry, pure and applied, is a science and an industry. By its power over the expressions of matter, it also displays the creativity of art. It has expanded from molecular to supramolecular chemistry and then, by way of constitutional dynamic chemistry, towards adaptive chemistry. Constitutional dynamics allow for adaptation, through component exchange and selection in response to physical stimuli (e.g. light, photoselection), to chemical effectors (e.g. metal ions, metalloselection) or to environmental effects (e.g. phase change) in equilibrium or out-of-equilibrium conditions, towards the generation of the best-adapted/fittest constituent(s) in a dynamic set. Such dynamic systems can be represented by two-dimensional or three-dimensional dynamic networks that define the agonistic and antagonistic relationships between the different constituents linked through component exchange. The introduction of constitutional dynamics into materials science opens perspectives towards adaptive materials and technologies, presenting attractive behavioral features (such as self-healing). In particular, dynamic polymers may undergo modification of their properties (mechanical, optical, etc.) through component exchange and recombination in response to physical or chemical agents. Constitutional adaptive materials open towards a systems materials science and offer numerous opportunities for soft-matter technologies.
Collapse
Affiliation(s)
- Jean-Marie Lehn
- ISIS, Institut de Science et d'Ingénierie Supramoléculaires, 8, allée Gaspard Monge 67000 Strasbourg (France).
| |
Collapse
|
188
|
Lehn JM. Perspektiven der Chemie - Aspekte adaptiver Chemie und adaptiver Materialien. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201409399] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
189
|
Giese M, Albrecht M, Valkonen A, Rissanen K. The pentafluorophenyl group as π-acceptor for anions: a case study. Chem Sci 2015; 6:354-359. [PMID: 28966761 PMCID: PMC5586208 DOI: 10.1039/c4sc02762k] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 10/03/2014] [Indexed: 12/13/2022] Open
Abstract
The present study gives a comprehensive insight into anion-π interactions in the solid state, focusing on purely organic and charge-neutral fluorophenyl groups bearing a positive charge located at a side chain. The detailed statistical analysis of a series of structural data sets shows the geometrical variability of anion-π bonding in the solid state. It reveals the directing substituents at the arene as key elements for the positional preferences of anions above π-systems. The structural variety of the interaction between anions and electron-deficient arenes is considered by use of the hapticity concept. Together with new evaluation criteria, two helpful tools to understand and describe anion-π interactions in the solid are used.
Collapse
Affiliation(s)
- Michael Giese
- Institut für Organische Chemie , RWTH Aachen University , Landoltweg 1 , 52074 Aachen , Germany .
| | - Markus Albrecht
- Institut für Organische Chemie , RWTH Aachen University , Landoltweg 1 , 52074 Aachen , Germany .
| | - Arto Valkonen
- Department of Chemistry , Nanoscience Center , University of Jyväskylä , Survontie 9 , 40014 Jyväskylä , Finland . ; ; Tel: +358 50 562 3721
| | - Kari Rissanen
- Department of Chemistry , Nanoscience Center , University of Jyväskylä , Survontie 9 , 40014 Jyväskylä , Finland . ; ; Tel: +358 50 562 3721
| |
Collapse
|
190
|
Yang Z, Shi Y, Chen W, Wang F. Well-defined supramolecular polymers based on orthogonal hydrogen-bonding and host–guest interactions. Polym Chem 2015. [DOI: 10.1039/c4py01591f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two architecturally controlled supramolecular polymers have been fabricated via the concurrent integration of orthogonal non-covalent recognition motifs, demonstrating significant chain topological-dependent supramolecular polymerization behaviors.
Collapse
Affiliation(s)
- Zhishuai Yang
- Mineral Chemistry Key Laboratory of Sichuan Higher Education Institution
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- Chengdu
- P. R. China
| | - Yonggang Shi
- Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Wen Chen
- Mineral Chemistry Key Laboratory of Sichuan Higher Education Institution
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- Chengdu
- P. R. China
| | - Feng Wang
- Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- P. R. China
| |
Collapse
|
191
|
Roy N, Bruchmann B, Lehn JM. DYNAMERS: dynamic polymers as self-healing materials. Chem Soc Rev 2015; 44:3786-807. [PMID: 25940832 DOI: 10.1039/c5cs00194c] [Citation(s) in RCA: 390] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An overview of recent advances made in the field of constitutional dynamic materials, in particular dynamic polymers, dynamers, displaying self-healing features.
Collapse
Affiliation(s)
- Nabarun Roy
- Laboratoire de Chimie Supramoléculaire
- ISIS
- Université de Strasbourg
- Strasbourg
- France
| | - Bernd Bruchmann
- BASF SE
- Joint Research Network on Advanced Materials and Systems (JONAS)
- Ludwigshafen
- Germany
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire
- ISIS
- Université de Strasbourg
- Strasbourg
- France
| |
Collapse
|
192
|
Kohlmeyer RR, Buskohl PR, Deneault JR, Durstock MF, Vaia RA, Chen J. Shape-reprogrammable polymers: encoding, erasing, and re-encoding. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:8114-8119. [PMID: 25323148 DOI: 10.1002/adma.201402901] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 08/21/2014] [Indexed: 06/04/2023]
Abstract
Shape-reprogramming in a polymer is demonstrated, where prescribed 3D geometric information can be encoded, decoded, erased, and re-encoded. In essence, the shape-reprogrammable polymer (SRP) acts as computer hardware that can be reformatted and reprogrammed repeatedly. Such SRPs have the potential to be repurposed directly without going through material disposal and recycling.
Collapse
Affiliation(s)
- Ryan R Kohlmeyer
- National Research Council, Washington, D.C., 20001, USA; Soft Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, 45433, USA; Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, 53211, USA
| | | | | | | | | | | |
Collapse
|
193
|
Lu X, Li X, Guo K, Xie TZ, Moorefield CN, Wesdemiotis C, Newkome GR. Probing a hidden world of molecular self-assembly: concentration-dependent, three-dimensional supramolecular interconversions. J Am Chem Soc 2014; 136:18149-55. [PMID: 25470035 DOI: 10.1021/ja511341z] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A terpyridine-based, concentration-dependent, facile self-assembly process is reported, resulting in two three-dimensional metallosupramolecular architectures, a bis-rhombus and a tetrahedron, which are formed using a two-dimensional, planar, tris-terpyridine ligand. The interconversion between these two structures is concentration-dependent: at a concentration higher than 12 mg mL(-1), only a bis-rhombus, composed of eight ligands and 12 Cd(2+) ions, is formed; whereas a self-assembled tetrahedron, composed of four ligands and six Cd(2+) ions, appears upon sufficient dilution of the tris-terpyridine-metal solution. At concentrations less than 0.5 mg mL(-1), only the tetrahedron possessing an S4 symmetry axis is detected; upon attempted isolation, it quantitatively reverts to the bis-rhombus. This observation opens an unexpected door to unusual chemical pathways under high dilution conditions.
Collapse
Affiliation(s)
- Xiaocun Lu
- Departments of †Polymer Science and ‡Chemistry, The University of Akron , 170 University Cr., Akron, Ohio 44325, United States
| | | | | | | | | | | | | |
Collapse
|
194
|
Ma X, Zhao Y. Biomedical Applications of Supramolecular Systems Based on Host–Guest Interactions. Chem Rev 2014; 115:7794-839. [DOI: 10.1021/cr500392w] [Citation(s) in RCA: 792] [Impact Index Per Article: 79.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xing Ma
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
- School
of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Yanli Zhao
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
- School
of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| |
Collapse
|
195
|
|
196
|
Wan P, Chen X. Stimuli-Responsive Supramolecular Interfaces for Controllable Bioelectrocatalysis. ChemElectroChem 2014. [DOI: 10.1002/celc.201402266] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
197
|
Hu C, Lan Y, Tian F, West KR, Scherman OA. Facile method for preparing surface-mounted cucurbit[8]uril-based rotaxanes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:10926-10932. [PMID: 25170789 DOI: 10.1021/la5026125] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Surface-immobilized rotaxanes are of practical interest for myriad applications including molecular rotors and analytical sensing. Herein, we present a facile method for the preparation of cucurbit[8]uril (CB[8])-based rotaxanes on gold (Au) surfaces threaded onto a viologen (MV(2+)) axle. The surface-bound CB[8] rotaxanes were characterized by contact angle measurements and optical microscopy. Direct imaging of the rotaxanes was accomplished by attaching either azobenzene-functionalized silica (Si-azo) colloids or fluorescein-labeled dopamine that were bound to the Au surface through a supramolecular heteroternary (1:1:1) complex with CB[8]. The surface density of CB[8] rotaxanes was examined based on their detection of dopamine. The calculated surface density is 4.8 × 10(13) molecules·cm(-2), which is only slightly lower than the theoretical value of 5.0 × 10(13) molecules·cm(-2). Surface-functionalized rotaxanes can be reversibly switched using external stimuli to bind electron-rich second guests for CB[8], including both small molecules such as dopamine and appropriately-functionalized colloidal particles. Such controlled reversibility gives rise to potential applications including selective sensing or reusable templates for preparing well-defined colloidal arrays. The formation of the surface-bound rotaxane structure is critical for successfully anchoring CB[8] host molecules onto Au substrates, yielding an interlocked architecture and preventing the dissociation of binary host-guest complex MV(2+)⊂CB[8]. The MV(2+)⊂CB[8] rotaxane structure thus effectively maintains the material density on the Au surface and dramatically enhances the stability of the functional surface.
Collapse
Affiliation(s)
- Chi Hu
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge , Cambridge CB2 1EW, United Kingdom
| | | | | | | | | |
Collapse
|
198
|
Meng H, Xiao P, Gu J, Wen X, Xu J, Zhao C, Zhang J, Chen T. Self-healable macro-/microscopic shape memory hydrogels based on supramolecular interactions. Chem Commun (Camb) 2014; 50:12277-80. [DOI: 10.1039/c4cc04760e] [Citation(s) in RCA: 152] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
199
|
Kumar M, George SJ. Novel Coronene-Naphthalene Dimide-Based Donor-Acceptor Pair for Tunable Charge-Transfer Nanostructures. Chem Asian J 2014; 9:2427-31. [DOI: 10.1002/asia.201402426] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Indexed: 01/22/2023]
|
200
|
Hu J, Liu S. Engineering responsive polymer building blocks with host-guest molecular recognition for functional applications. Acc Chem Res 2014; 47:2084-95. [PMID: 24742049 DOI: 10.1021/ar5001007] [Citation(s) in RCA: 173] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
CONSPECTUS: All living organisms and soft matter are intrinsically responsive and adaptive to external stimuli. Inspired by this fact, tremendous effort aiming to emulate subtle responsive features exhibited by nature has spurred the invention of a diverse range of responsive polymeric materials. Conventional stimuli-responsive polymers are constructed via covalent bonds and can undergo reversible or irreversible changes in chemical structures, physicochemical properties, or both in response to a variety of external stimuli. They have been imparted with a variety of emerging applications including drug and gene delivery, optical sensing and imaging, diagnostics and therapies, smart coatings and textiles, and tissue engineering. On the other hand, in comparison with molecular chemistry held by covalent bonds, supramolecular chemistry built on weak and reversible noncovalent interactions has emerged as a powerful and versatile strategy for materials fabrication due to its facile accessibility, extraordinary reversibility and adaptivity, and potent applications in diverse fields. Typically involving more than one type of noncovalent interactions (e.g., hydrogen bonding, metal coordination, hydrophobic association, electrostatic interactions, van der Waals forces, and π-π stacking), host-guest recognition refers to the formation of supramolecular inclusion complexes between two or more entities connected together in a highly controlled and cooperative manner. The inherently reversible and adaptive nature of host-guest molecular recognition chemistry, stemming from multiple noncovalent interactions, has opened up a new platform to construct novel types of stimuli-responsive materials. The introduction of host-guest chemistry not only enriches the realm of responsive materials but also confers them with promising new applications. Most intriguingly, the integration of responsive polymer building blocks with host-guest recognition motifs will endow the former with further broadened responsiveness to external stimuli and accordingly more sophisticated functions. In this Account, we summarize recent progress in the field of responsive polymeric materials containing host-guest recognition motifs with selected examples and highlight their versatile functional applications, whereas small molecule-oriented host-guest supramolecular systems are excluded. We demonstrate how the introduction of host-guest chemistry into conventional polymer systems can modulate their responsive modes to external stimuli. Moreover, the responsive specificity and selectivity of polymeric systems can also be inherited from the host-guest recognition motifs, and these features provide extra advantages in terms of function integration. The following discussions are categorized in terms of design and functions, namely, host-guest chemistry toward the fabrication of responsive polymers and assemblies, optical sensing and imaging, drug and gene delivery, and self-healing materials. A concluding remark on future developments is also presented. We wish this prosperous field would incur more original and evolutionary ideas and benefit fundamental research and our daily life in a more convenient way.
Collapse
Affiliation(s)
- Jinming Hu
- CAS Key
Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, Hefei
National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shiyong Liu
- CAS Key
Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, Hefei
National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| |
Collapse
|