1
|
Wang L, Wang X, Zhao ZL, Wan LJ, Wang D. Stranski-Krastanov Growth of Two-Dimensional Covalent Organic Framework Films. J Am Chem Soc 2024; 146:14079-14085. [PMID: 38720291 DOI: 10.1021/jacs.4c02418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Insights into the formation mechanisms of two-dimensional covalent organic frameworks (2D COFs) at both the in-plane and interlayer levels are essential for improving material quality and synthetic methodology. Here, we report the controllable preparation of 2D COF films via on-surface synthesis and investigate the growth mechanism using atomic force microscopy. Monolayer, bilayer, and layer-plus-island multilayer COF films were successfully constructed on hexagonal boron nitride in a controlled manner. The porphyrin-based COF films grow in the Stranski-Krastanov mode, i.e., a uniform bilayer COF film can be formed through layer-by-layer growth in the initial stage followed by island growth starting from the third layer. Furthermore, fluorescence quenching caused by π-π stacking interactions between 2D COF neighboring layers was revealed. These results provide new perspectives on the synthesis of high-quality 2D COF films with controllable thickness and morphology, paving the way for a diverse range of applications.
Collapse
Affiliation(s)
- Lu Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiang Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhen-Lian Zhao
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Jun Wan
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dong Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
2
|
Su F, Hong Y, Zhang G, Wu K, Kim J, Chen Z, Zhang HJ, Kim D, Lin J. Two-dimensional radial-π-stacks in solution. Chem Sci 2024; 15:5604-5611. [PMID: 38638221 PMCID: PMC11023034 DOI: 10.1039/d4sc00195h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/11/2024] [Indexed: 04/20/2024] Open
Abstract
Highly organized π-aggregate architectures can strongly affect electronic couplings, leading to important photophysical behaviors. With the escalating interest in two-dimensional (2D) materials attributed to their exceptional electronic and optical characteristics, there is growing anticipation that 2D radial-π-stacks built upon radial π-conjugation nanorings, incorporating intra- and inter-ring electronic couplings within the confines of a 2D plane, will exhibit superior topological attributes and distinct properties. Despite their immense potential, the design and synthesis of 2D π-stacks have proven to be a formidable challenge due to the insufficient π-π interactions necessary for stable stacking. In this study, we present the successful preparation of single-layer 2D radial-π-stacks in a solution. Pillar-shaped radially π-conjugated [4]cyclo-naphthodithiophene diimide ([4]C-NDTIs) molecules were tetragonally arranged via in-plane intermolecular π-π interactions. These 2D π-stacks have a unique topology that differs from that of conventional 1D π-stacks and exhibit notable properties, such as acting as a 2D template capable of absorbing C60 guest molecules and facilitating the formation of 2D radial-π-stacks comprising [4]C-NDTI-C60 complexes, rapid exciton delocalization across the 2D plane, and efficient excitation energy funneling towards a trap.
Collapse
Affiliation(s)
- Feng Su
- Department of Chemistry, College of Chemistry and Chemical Engineering, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Xiamen University Xiamen 361005 P. R. China
| | - Yongseok Hong
- Department of Chemistry, Yonsei University Seoul 03722 Korea
| | - Guilan Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Xiamen University Xiamen 361005 P. R. China
| | - Kongchuan Wu
- Department of Chemistry, College of Chemistry and Chemical Engineering, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Xiamen University Xiamen 361005 P. R. China
| | - Juno Kim
- Department of Chemistry, Yonsei University Seoul 03722 Korea
| | - Zhi Chen
- College of Chemistry and Environmental Engineering, Shenzhen University Shenzhen 518060 China
| | - Hui-Jun Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Xiamen University Xiamen 361005 P. R. China
| | - Dongho Kim
- Department of Chemistry, Yonsei University Seoul 03722 Korea
- Division of Energy Materials, Pohang University of Science and Technology (POSTECH) Pohang 37673 Korea
| | - Jianbin Lin
- Department of Chemistry, College of Chemistry and Chemical Engineering, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Xiamen University Xiamen 361005 P. R. China
| |
Collapse
|
3
|
Ju T, Liu M, Shi X, Xiao A, Zhang Z, Wang J, Zhang Y, Wang Y. Chemically Asymmetric Polymers Manipulate the Crystallization of Two-Dimensional Covalent Organic Frameworks to Synthesize Processable Nanosheets. ACS NANO 2023. [PMID: 37976399 DOI: 10.1021/acsnano.3c07743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Nanosheets derived from two-dimensional covalent organic frameworks (2D COFs) are increasingly desirable in various fields. While breakthroughs in the chemical and physical delamination of 2D COFs are rising, precisely regulating the growth of the COF nanosheets has not been realized yet. Herein, we report an effective strategy of polymer-manipulated crystallization to accurately control the growth of COF nanosheets. Chemically asymmetric polyvinylpyrrolidone (PVP) is developed as the manipulator that selectively interacts with the aldehydes and (100) facet to induce anisotropic growth of COFs. The number of PVP constitutional units determines this specific interaction, leading to molecularly thin but thickness-controllable nanosheets with excellent dispersity. We process these nanosheets into robust A4-sized membranes for ultraselective molecular separation. The membrane intercalated with long-chain PVP demonstrates largely improved performance, surpassing the reported COF membranes. This work reports a strategy for anisotropically crystallizing 2D COFs to yield processable nanosheets toward practical applications.
Collapse
Affiliation(s)
- Tong Ju
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Ming Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Xiansong Shi
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Ankang Xiao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Zhe Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Jingtao Wang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Yatao Zhang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Yong Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
- School of Energy and Environment, Southeast University, Nanjing 210096, P. R. China
| |
Collapse
|
4
|
Qin Y, Zhu X, Huang R. Covalent organic frameworks: linkage types, synthetic methods and bio-related applications. Biomater Sci 2023; 11:6942-6976. [PMID: 37750827 DOI: 10.1039/d3bm01247f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Covalent organic frameworks (COFs) are composed of small organic molecules linked via covalent bonds, which have tunable mesoporous structure, good biocompatibility and functional diversities. These excellent properties make COFs a promising candidate for constructing biomedical nanoplatforms and provide ample opportunities for nanomedicine development. A systematic review of the linkage types and synthesis methods of COFs is of indispensable value for their biomedical applications. In this review, we first summarize the types of various linkages of COFs and their corresponding properties. Then, we highlight the reaction temperature, solvent and reaction time required by different synthesis methods and show the most suitable synthesis method by comparing the merits and demerits of various methods. To appreciate the cutting-edge research on COFs in bioscience technology, we also summarize the bio-related applications of COFs, including drug delivery, tumor therapy, bioimaging, biosensing and antimicrobial applications. We hope to provide insight into the interdisciplinary research on COFs and promote the development of COF nanomaterials for biomedical applications and their future clinical translations.
Collapse
Affiliation(s)
- Yanhui Qin
- School of Pharmacy, Key Laboratory of Smart Drug Delivery, Ministry of Education, Fudan University, Shanghai, 201203, China.
| | - Xinran Zhu
- School of Pharmacy, Key Laboratory of Smart Drug Delivery, Ministry of Education, Fudan University, Shanghai, 201203, China.
| | - Rongqin Huang
- School of Pharmacy, Key Laboratory of Smart Drug Delivery, Ministry of Education, Fudan University, Shanghai, 201203, China.
| |
Collapse
|
5
|
Sun R, Tan B. Covalent Triazine Frameworks (CTFs): Synthesis, Crystallization, and Photocatalytic Water Splitting. Chemistry 2023; 29:e202203077. [PMID: 36504463 DOI: 10.1002/chem.202203077] [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: 10/03/2022] [Revised: 12/09/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022]
Abstract
Covalent Triazine Frameworks (CTFs) have received great attention from academia owing to their unique structure characteristics such as nitrogen-rich structure, chemical stability, fully conjugated skeleton and high surface area; all these unique properties make CTFs attractive for widespread applications, especially for photocatalytic applications. In this review, we aim to provide recent advances in the CTFs preparation, and mainly focus on their photocatalytic applications. This review provides a comprehensive and systematic overview of the CTFs' synthetic methods, crystallinity lifting strategies, and their applications for photocatalytic water splitting. Firstly, a brief background including the photocatalytic water splitting and crystallinity are provided. Then, synthetic methods related to CTFs and the strategies for enhancing the crystallinity are summarized and compared. After that, the general photocatalytic mechanism and the strategies to improve the photocatalytic performance of CTFs are discussed. Finally, the perspectives and challenges of fabricating high crystalline CTFs and designing CTFs with excellent photocatalytic performance are discussed, inspiring the development of CTF materials in photocatalytic applications.
Collapse
Affiliation(s)
- Ruixue Sun
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, P. R. China
| | - Bien Tan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, P. R. China
| |
Collapse
|
6
|
Bhunia S, Peña-Duarte A, Li H, Li H, Sanad MF, Saha P, Addicoat MA, Sasaki K, Strom TA, Yacamán MJ, Cabrera CR, Seshadri R, Bhattacharya S, Brédas JL, Echegoyen L. [2,1,3]-Benzothiadiazole-Spaced Co-Porphyrin-Based Covalent Organic Frameworks for O 2 Reduction. ACS NANO 2023; 17:3492-3505. [PMID: 36753696 DOI: 10.1021/acsnano.2c09838] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Designing N-coordinated porous single-atom catalysts (SACs) for the oxygen reduction reaction (ORR) is a promising approach to achieve enhanced energy conversion due to maximized atom utilization and higher activity. Here, we report two Co(II)-porphyrin/ [2,1,3]-benzothiadiazole (BTD)-based covalent organic frameworks (COFs; Co@rhm-PorBTD and Co@sql-PorBTD), which are efficient SAC systems for O2 electrocatalysis (ORR). Experimental results demonstrate that these two COFs outperform the mass activity (at 0.85 V) of commercial Pt/C (20%) by 5.8 times (Co@rhm-PorBTD) and 1.3 times (Co@sql-PorBTD), respectively. The specific activities of Co@rhm-PorBTD and Co@sql-PorBTD were found to be 10 times and 2.5 times larger than that of Pt/C, respectively. These COFs also exhibit larger power density and recycling stability in Zn-air batteries compared with a Pt/C-based air cathode. A theoretical analysis demonstrates that the combination of Co-porphyrin with two different BTD ligands affords two crystalline porous electrocatalysts having different d-band center positions, which leads to reactivity differences toward alkaline ORR. The strategy, design, and electrochemical performance of these two COFs offer a pyrolysis-free bottom-up approach that avoids the creation of random atomic sites, significant metal aggregation, or unpredictable structural features.
Collapse
Affiliation(s)
- Subhajit Bhunia
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 West University Avenue, El Paso, Texas79968, United States
| | - Armando Peña-Duarte
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 West University Avenue, El Paso, Texas79968, United States
| | - Huifang Li
- College of Electromechanical Engineering, Qingdao University of Science and Technology, No. 99 Songling Road, Qingdao, Shandong266061, China
| | - Hong Li
- Department of Chemistry and Biochemistry, The University of Arizona, 1041 East Lowell Street, Tucson, Arizona85721-0088, United States
| | - Mohamed Fathi Sanad
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 West University Avenue, El Paso, Texas79968, United States
| | - Pranay Saha
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata700032, India
| | - Matthew A Addicoat
- Department of Chemistry and Forensics, Nottingham Trent University, Clifton Lane, NottinghamNG11 8NS, United Kingdom
| | - Kotaro Sasaki
- Chemistry Department, Brookhaven National Laboratory, Upton, New York11973, United States
| | - T Amanda Strom
- Materials Research Laboratory and Materials Department, University of California, Santa Barbara, California93106, United States
| | - Miguel José Yacamán
- Department of Applied Physics and Materials Science, Northern Arizona University, 525 South Beaver Street, Flagstaff, Arizona86011, United States
| | - Carlos R Cabrera
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 West University Avenue, El Paso, Texas79968, United States
| | - Ram Seshadri
- Materials Research Laboratory and Materials Department, University of California, Santa Barbara, California93106, United States
| | - Santanu Bhattacharya
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata700032, India
- Department of Organic Chemistry, Indian Institute of Science, Tala Marg, Bangalore560 012, India
| | - Jean-Luc Brédas
- Department of Chemistry and Biochemistry, The University of Arizona, 1041 East Lowell Street, Tucson, Arizona85721-0088, United States
| | - Luis Echegoyen
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 West University Avenue, El Paso, Texas79968, United States
| |
Collapse
|
7
|
Wang T, Xie H, Cao Y, Xu Q, Gan N. Magnetic solid phase extraction coupled with high-performance liquid chromatography-diode array detection based on assembled magnetic covalent organic frameworks for selective extraction and detection of microcystins in aquatic foods. J Chromatogr A 2022; 1685:463614. [DOI: 10.1016/j.chroma.2022.463614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/25/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022]
|
8
|
Cencer MM, Suslick BA, Moore JS. From skeptic to believer: The power of models. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
9
|
Sasmal HS, Kumar Mahato A, Majumder P, Banerjee R. Landscaping Covalent Organic Framework Nanomorphologies. J Am Chem Soc 2022; 144:11482-11498. [PMID: 35754375 DOI: 10.1021/jacs.2c02301] [Citation(s) in RCA: 60] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The practical utilization of covalent organic frameworks (COFs) with manipulation at the atomic and molecular scale often demands their assembly on the nano-, meso-, and macroscale with precise control. Consequently, synthetic approaches that establish the ability to control the nucleation and growth of COF crystallites and their self-assembly to desired COF nanomorphologies have drawn substantial attention from researchers. On the basis of the dimensionality of the COF morphologies, we can categorize them into zero- (0-D), one- (1-D), two- (2-D), and three-dimensional (3-D) nanomorphologies. In this perspective, we summarize the reported synthetic strategies that enable precise control of the COF nanomorphologies' size, shape, and dimensionality and reveal the impact of the dimensionalities in their physicochemical properties and applications. The aim is to establish a synergistic optimization of the morphological dimensionality while keeping the micro- or mesoporosity, crystallinity, and chemical functionalities of the COFs in perspective. A detailed knowledge along the way should help us to enrich the performance of COFs in a variety of applications like catalysis, separation, sensing, drug delivery, energy storage, etc. We have discussed the interlinking between the COF nanomorphologies via the transmutation of the dimensionalities. Such dimensionality transmutation could lead to variation in their properties during the transition. Finally, the concept of constructing COF superstructures through the combination of two or more COF nanomorphologies has been explored, and it could bring up opportunities for developing next-generation innovative materials for multidisciplinary applications.
Collapse
Affiliation(s)
- Himadri Sekhar Sasmal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India.,Centre for Advanced Functional Materials, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Ashok Kumar Mahato
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India.,Centre for Advanced Functional Materials, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Poulami Majumder
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India.,Centre for Advanced Functional Materials, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Rahul Banerjee
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India.,Centre for Advanced Functional Materials, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| |
Collapse
|
10
|
Liu X, Pappas EJ, Husby ML, Motsa BB, Stahelin RV, Pienaar E. Mechanisms of phosphatidylserine influence on viral production: A computational model of Ebola virus matrix protein assembly. J Biol Chem 2022; 298:102025. [PMID: 35568195 PMCID: PMC9218153 DOI: 10.1016/j.jbc.2022.102025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 05/02/2022] [Accepted: 05/04/2022] [Indexed: 11/30/2022] Open
Abstract
Ebola virus (EBOV) infections continue to pose a global public health threat, with high mortality rates and sporadic outbreaks in Central and Western Africa. A quantitative understanding of the key processes driving EBOV assembly and budding could provide valuable insights to inform drug development. Here, we use a computational model to evaluate EBOV matrix assembly. Our model focuses on the assembly kinetics of VP40, the matrix protein in EBOV, and its interaction with phosphatidylserine (PS) in the host cell membrane. It has been shown that mammalian cells transfected with VP40-expressing plasmids are capable of producing virus-like particles (VLPs) that closely resemble EBOV virions. Previous studies have also shown that PS levels in the host cell membrane affects VP40 association with the plasma membrane inner leaflet and that lower membrane PS levels result in lower VLP production. Our computational findings indicate that PS may also have a direct influence on VP40 VLP assembly and budding, where a higher PS level will result in a higher VLP budding rate and filament dissociation rate. Our results further suggest that the assembly of VP40 filaments follow the nucleation-elongation theory, where initialization and oligomerization of VP40 are two distinct steps in the assembly process. Our findings advance the current understanding of VP40 VLP formation by identifying new possible mechanisms of PS influence on VP40 assembly. We propose that these mechanisms could inform treatment strategies targeting PS alone or in combination with other VP40 assembly steps.
Collapse
Affiliation(s)
- Xiao Liu
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Ethan J Pappas
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Monica L Husby
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, USA
| | - Balindile B Motsa
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, USA
| | - Robert V Stahelin
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, USA
| | - Elsje Pienaar
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA.
| |
Collapse
|
11
|
Zhan G, Cai ZF, Strutyński K, Yu L, Herrmann N, Martínez-Abadía M, Melle-Franco M, Mateo-Alonso A, Feyter SD. Observing polymerization in 2D dynamic covalent polymers. Nature 2022; 603:835-840. [PMID: 35355001 DOI: 10.1038/s41586-022-04409-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 01/06/2022] [Indexed: 11/09/2022]
Abstract
The quality of crystalline two-dimensional (2D) polymers1-6 is intimately related to the elusive polymerization and crystallization processes. Understanding the mechanism of such processes at the (sub)molecular level is crucial to improve predictive synthesis and to tailor material properties for applications in catalysis7-10 and (opto)electronics11,12, among others13-18. We characterize a model boroxine 2D dynamic covalent polymer, by using in situ scanning tunnelling microscopy, to unveil both qualitative and quantitative details of the nucleation-elongation processes in real time and under ambient conditions. Sequential data analysis enables observation of the amorphous-to-crystalline transition, the time-dependent evolution of nuclei, the existence of 'non-classical' crystallization pathways and, importantly, the experimental determination of essential crystallization parameters with excellent accuracy, including critical nucleus size, nucleation rate and growth rate. The experimental data have been further rationalized by atomistic computer models, which, taken together, provide a detailed picture of the dynamic on-surface polymerization process. Furthermore, we show how 2D crystal growth can be affected by abnormal grain growth. This finding provides support for the use of abnormal grain growth (a typical phenomenon in metallic and ceramic systems) to convert a polycrystalline structure into a single crystal in organic and 2D material systems.
Collapse
Affiliation(s)
- Gaolei Zhan
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Leuven, Belgium.,Department of Chemistry, National University of Singapore, Singapore, Singapore
| | - Zhen-Feng Cai
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Leuven, Belgium. .,Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland.
| | - Karol Strutyński
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Lihua Yu
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Leuven, Belgium
| | - Niklas Herrmann
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Leuven, Belgium
| | | | - Manuel Melle-Franco
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Aurelio Mateo-Alonso
- POLYMAT, University of the Basque Country UPV/EHU, Donostia-San Sebastian, Spain.,Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Steven De Feyter
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Leuven, Belgium.
| |
Collapse
|
12
|
Growing single crystals of two-dimensional covalent organic frameworks enabled by intermediate tracing study. Nat Commun 2022; 13:1370. [PMID: 35296677 PMCID: PMC8927472 DOI: 10.1038/s41467-022-29086-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 02/23/2022] [Indexed: 12/04/2022] Open
Abstract
Resolving single-crystal structures of two-dimensional covalent organic frameworks (2D COFs) is a great challenge, hindered in part by limited strategies for growing high-quality crystals. A better understanding of the growth mechanism facilitates development of methods to grow high-quality 2D COF single crystals. Here, we take a different perspective to explore the 2D COF growth process by tracing growth intermediates. We discover two different growth mechanisms, nucleation and self-healing, in which self-assembly and pre-arrangement of monomers and oligomers are important factors for obtaining highly crystalline 2D COFs. These findings enable us to grow micron-sized 2D single crystalline COF Py-1P. The crystal structure of Py-1P is successfully characterized by three-dimensional electron diffraction (3DED), which confirms that Py-1P does, in part, adopt the widely predicted AA stacking structure. In addition, we find the majority of Py-1P crystals (>90%) have a previously unknown structure, containing 6 stacking layers within one unit cell. Resolving single-crystal structures of two-dimensional covalent organic frameworks (2D COFs) is a great challenge. Here, the authors identify two different growth mechanisms of COFs, enabling the growth and structure determination of micron-sized 2D single-crystalline COFs.
Collapse
|
13
|
|
14
|
Guo L, Zhang J, Huang Q, Zhou W, Jin S. Progress in synthesis of highly crystalline covalent organic frameworks and their crystallinity enhancement strategies. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.02.065] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
15
|
Wang X, Liu M, Wang X, Tan B. Synthesis of highly crystalline imine-linked covalent organic frameworks via controlling monomer feeding rates in an open system. Chem Commun (Camb) 2022; 58:12313-12316. [DOI: 10.1039/d2cc04374b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covalent organic frameworks (COFs) have enormous potential in various applications because of their high crystallinity and superior surface area.
Collapse
Affiliation(s)
- Xueqing Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, Wuhan 430074, P. R. China
| | - Manying Liu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, Wuhan 430074, P. R. China
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Henan 461000, P. R. China
| | - Xiaoyan Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, Wuhan 430074, P. R. China
| | - Bien Tan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, Wuhan 430074, P. R. China
| |
Collapse
|
16
|
Evans AM, Strauss MJ, Corcos AR, Hirani Z, Ji W, Hamachi LS, Aguilar-Enriquez X, Chavez AD, Smith BJ, Dichtel WR. Two-Dimensional Polymers and Polymerizations. Chem Rev 2021; 122:442-564. [PMID: 34852192 DOI: 10.1021/acs.chemrev.0c01184] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Synthetic chemists have developed robust methods to synthesize discrete molecules, linear and branched polymers, and disordered cross-linked networks. However, two-dimensional polymers (2DPs) prepared from designed monomers have been long missing from these capabilities, both as objects of chemical synthesis and in nature. Recently, new polymerization strategies and characterization methods have enabled the unambiguous realization of covalently linked macromolecular sheets. Here we review 2DPs and 2D polymerization methods. Three predominant 2D polymerization strategies have emerged to date, which produce 2DPs either as monolayers or multilayer assemblies. We discuss the fundamental understanding and scope of each of these approaches, including: the bond-forming reactions used, the synthetic diversity of 2DPs prepared, their multilayer stacking behaviors, nanoscale and mesoscale structures, and macroscale morphologies. Additionally, we describe the analytical tools currently available to characterize 2DPs in their various isolated forms. Finally, we review emergent 2DP properties and the potential applications of planar macromolecules. Throughout, we highlight achievements in 2D polymerization and identify opportunities for continued study.
Collapse
Affiliation(s)
- Austin M Evans
- Department of Chemistry, Northwestern University, 1425 Sheridan Road, Evanston, Illinois 60208, United States
| | - Michael J Strauss
- Department of Chemistry, Northwestern University, 1425 Sheridan Road, Evanston, Illinois 60208, United States
| | - Amanda R Corcos
- Department of Chemistry, Northwestern University, 1425 Sheridan Road, Evanston, Illinois 60208, United States
| | - Zoheb Hirani
- Department of Chemistry, Northwestern University, 1425 Sheridan Road, Evanston, Illinois 60208, United States
| | - Woojung Ji
- Department of Chemistry, Northwestern University, 1425 Sheridan Road, Evanston, Illinois 60208, United States
| | - Leslie S Hamachi
- Department of Chemistry, Northwestern University, 1425 Sheridan Road, Evanston, Illinois 60208, United States.,Department of Chemistry and Biochemistry, California Polytechnic State University, San Luis Obispo, California 93407, United States
| | - Xavier Aguilar-Enriquez
- Department of Chemistry, Northwestern University, 1425 Sheridan Road, Evanston, Illinois 60208, United States
| | - Anton D Chavez
- Department of Chemistry, Northwestern University, 1425 Sheridan Road, Evanston, Illinois 60208, United States
| | - Brian J Smith
- Department of Chemistry, Bucknell University,1 Dent Drive, Lewisburg, Pennsylvania 17837, United States
| | - William R Dichtel
- Department of Chemistry, Northwestern University, 1425 Sheridan Road, Evanston, Illinois 60208, United States
| |
Collapse
|
17
|
He X, Jiang Z, Akakuru OU, Li J, Wu A. Nanoscale covalent organic frameworks: from controlled synthesis to cancer therapy. Chem Commun (Camb) 2021; 57:12417-12435. [PMID: 34734601 DOI: 10.1039/d1cc04846e] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Covalent organic frameworks (COFs), as a new type of crystalline porous materials, mainly consist of light-weight elements (H, B, C, N and O) linked by dynamic covalent bonds to form periodical structures of two or three dimensions. As an attribute of their low density, large surface area, and excellent adjustable pore size, COFs show great potential in many fields including energy storage and separation, catalysis, sensing, and biomedicine. However, compared with metal organic frameworks (MOFs), the relatively large size and irregular morphology of COFs affect their biocompatibility and bioavailability in vivo, thus impeding their further biomedical applications. This Review focuses on the controlled design strategies of nanoscale COFs (NCOFs), unique properties of NCOFs for biomedical applications, and recent progress in NCOFs for cancer therapy. In addition, current challenges for the biomedical use of NCOFs and perspectives for further improvements are presented.
Collapse
Affiliation(s)
- Xuelu He
- Cixi Institute of Biomedical Engineering, CAS Key Laboratory of Magnetic Materials and Devices, Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhenqi Jiang
- Cixi Institute of Biomedical Engineering, CAS Key Laboratory of Magnetic Materials and Devices, Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China.
| | - Ozioma Udochukwu Akakuru
- Cixi Institute of Biomedical Engineering, CAS Key Laboratory of Magnetic Materials and Devices, Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Juan Li
- Cixi Institute of Biomedical Engineering, CAS Key Laboratory of Magnetic Materials and Devices, Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China. .,Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, P. R. China
| | - Aiguo Wu
- Cixi Institute of Biomedical Engineering, CAS Key Laboratory of Magnetic Materials and Devices, Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China. .,Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516000, P. R. China
| |
Collapse
|
18
|
Hamzehpoor E, Jonderian A, McCalla E, Perepichka DF. Synthesis of Boroxine and Dioxaborole Covalent Organic Frameworks via Transesterification and Metathesis of Pinacol Boronates. J Am Chem Soc 2021; 143:13274-13280. [PMID: 34428908 DOI: 10.1021/jacs.1c05987] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Boroxine and dioxaborole are the first and some of the most studied synthons of covalent organic frameworks (COFs). Despite their wide application in the design of functional COFs over the last 15 years, their synthesis still relies on the original Yaghi's condensation of boronic acids (with itself or with polyfunctional catechols), some of which are difficult to prepare, poorly soluble, or unstable in the presence of water. Here, we propose a new synthetic approach to boroxine COFs (on the basis of the transesterification of pinacol aryl boronates (aryl-Bpins) with methyl boronic acid (MBA) and dioxaborole COFs (through the metathesis of pinacol boronates with MBA-protected catechols). The aryl-Bpin and MBA-protected catechols are easy to purify, highly soluble, and bench-stable. Furthermore, the kinetic analysis of the two model reactions reveals high reversibility (Keq ∼ 1) and facile control over the equilibrium. Unlike the conventional condensation, which forms water as a byproduct, the byproduct of the metathesis (MBA pinacolate) allows for easy kinetic measurements of the COF formation by conventional 1H NMR. We show the generality of this approach by the synthesis of seven known boroxine/dioxaborole COFs whose crystallinity is better or equal to those reported by conventional condensation. We also apply metathesis polymerization to obtain two new COFs, Py4THB and B2HHTP, whose synthesis was previously precluded by the insolubility and hydrolytic instability, respectively, of the boronic acid precursors.
Collapse
Affiliation(s)
- Ehsan Hamzehpoor
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
| | - Antranik Jonderian
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
| | - Eric McCalla
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
| | | |
Collapse
|
19
|
|
20
|
Yao S, Liu Z, Li L. Recent Progress in Nanoscale Covalent Organic Frameworks for Cancer Diagnosis and Therapy. NANO-MICRO LETTERS 2021; 13:176. [PMID: 34398320 PMCID: PMC8368921 DOI: 10.1007/s40820-021-00696-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/11/2021] [Indexed: 05/19/2023]
Abstract
Covalent organic frameworks (COFs) as a type of porous and crystalline covalent organic polymer are built up from covalently linked and periodically arranged organic molecules. Their precise assembly, well-defined coordination network, and tunable porosity endow COFs with diverse characteristics such as low density, high crystallinity, porous structure, and large specific-surface area, as well as versatile functions and active sites that can be tuned at molecular and atomic level. These unique properties make them excellent candidate materials for biomedical applications, such as drug delivery, diagnostic imaging, and disease therapy. To realize these functions, the components, dimensions, and guest molecule loading into COFs have a great influence on their performance in various applications. In this review, we first introduce the influence of dimensions, building blocks, and synthetic conditions on the chemical stability, pore structure, and chemical interaction with guest molecules of COFs. Next, the applications of COFs in cancer diagnosis and therapy are summarized. Finally, some challenges for COFs in cancer therapy are noted and the problems to be solved in the future are proposed.
Collapse
Affiliation(s)
- Shuncheng Yao
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, People's Republic of China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Zhirong Liu
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, People's Republic of China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Linlin Li
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, People's Republic of China.
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
| |
Collapse
|
21
|
Evans AM, Giri A, Sangwan VK, Xun S, Bartnof M, Torres-Castanedo CG, Balch HB, Rahn MS, Bradshaw NP, Vitaku E, Burke DW, Li H, Bedzyk MJ, Wang F, Brédas JL, Malen JA, McGaughey AJH, Hersam MC, Dichtel WR, Hopkins PE. Thermally conductive ultra-low-k dielectric layers based on two-dimensional covalent organic frameworks. NATURE MATERIALS 2021; 20:1142-1148. [PMID: 33737728 DOI: 10.1038/s41563-021-00934-3] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
As the features of microprocessors are miniaturized, low-dielectric-constant (low-k) materials are necessary to limit electronic crosstalk, charge build-up, and signal propagation delay. However, all known low-k dielectrics exhibit low thermal conductivities, which complicate heat dissipation in high-power-density chips. Two-dimensional (2D) covalent organic frameworks (COFs) combine immense permanent porosities, which lead to low dielectric permittivities, and periodic layered structures, which grant relatively high thermal conductivities. However, conventional synthetic routes produce 2D COFs that are unsuitable for the evaluation of these properties and integration into devices. Here, we report the fabrication of high-quality COF thin films, which enable thermoreflectance and impedance spectroscopy measurements. These measurements reveal that 2D COFs have high thermal conductivities (1 W m-1 K-1) with ultra-low dielectric permittivities (k = 1.6). These results show that oriented, layered 2D polymers are promising next-generation dielectric layers and that these molecularly precise materials offer tunable combinations of useful properties.
Collapse
Affiliation(s)
- Austin M Evans
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - Ashutosh Giri
- Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA, USA
- Department of Mechanical, Industrial and Systems Engineering, University of Rhode Island, Kingston, RI, USA
| | - Vinod K Sangwan
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Sangni Xun
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA
- Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, GA, USA
- College of Environmental Science and Engineering, Hunan University, Changsha, People's Republic of China
| | - Matthew Bartnof
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | | | - Halleh B Balch
- Department of Physics, University of California Berkeley, Berkeley, CA, USA
- Kavli Energy NanoScience Institute, University of California Berkeley, Berkeley, CA, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Matthew S Rahn
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Nathan P Bradshaw
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Edon Vitaku
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - David W Burke
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - Hong Li
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ, USA
| | - Michael J Bedzyk
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
- Department of Physics and Astronomy, Northwestern University, Evanston, IL, USA
| | - Feng Wang
- Department of Physics, University of California Berkeley, Berkeley, CA, USA
- Kavli Energy NanoScience Institute, University of California Berkeley, Berkeley, CA, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Jean-Luc Brédas
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ, USA
| | - Jonathan A Malen
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
- Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Alan J H McGaughey
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
- Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Mark C Hersam
- Department of Chemistry, Northwestern University, Evanston, IL, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
- Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL, USA
- Simpson Querrey Institute, Northwestern University, Evanston, IL, USA
| | - William R Dichtel
- Department of Chemistry, Northwestern University, Evanston, IL, USA.
| | - Patrick E Hopkins
- Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA, USA.
- Department of Physics, University of Virginia, Charlottesville, VA, USA.
- Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA, USA.
| |
Collapse
|
22
|
Chen L, Wang W, Tian J, Bu F, Zhao T, Liu M, Lin R, Zhang F, Lee M, Zhao D, Li X. Imparting multi-functionality to covalent organic framework nanoparticles by the dual-ligand assistant encapsulation strategy. Nat Commun 2021; 12:4556. [PMID: 34315880 PMCID: PMC8316466 DOI: 10.1038/s41467-021-24838-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 07/09/2021] [Indexed: 01/02/2023] Open
Abstract
The potential applications of covalent organic frameworks (COFs) can be further developed by encapsulating functional nanoparticles within the frameworks. However, the synthesis of monodispersed core@shell structured COF nanocomposites without agglomeration remains a significant challenge. Herein, we present a versatile dual-ligand assistant strategy for interfacial growth of COFs on the functional nanoparticles with abundant physicochemical properties. Regardless of the composition, geometry or surface properties of the core, the obtained core@shell structured nanocomposites with controllable shell-thickness are very uniform without agglomeration. The derived bowl-shape, yolk@shell, core@satellites@shell nanostructures can also be fabricated delicately. As a promising type of photosensitizer for photodynamic therapy (PDT), the porphyrin-based COFs were grown onto upconversion nanoparticles (UCNPs). With the assistance of the near-infrared (NIR) to visible optical property of UCNPs core and the intrinsic porosity of COF shell, the core@shell nanocomposites can be applied as a nanoplatform for NIR-activated PDT with deep tissue penetration and chemotherapeutic drug delivery.
Collapse
Affiliation(s)
- Liang Chen
- Department of Chemistry, Laboratory of Advanced Materials and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, PR China
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China
| | - Wenxing Wang
- Department of Chemistry, Laboratory of Advanced Materials and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, PR China
| | - Jia Tian
- Department of Chemistry, University of Victoria, Victoria, BC, Canada
| | - Fanxing Bu
- Department of Chemistry, Laboratory of Advanced Materials and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, PR China
| | - Tiancong Zhao
- Department of Chemistry, Laboratory of Advanced Materials and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, PR China
| | - Minchao Liu
- Department of Chemistry, Laboratory of Advanced Materials and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, PR China
| | - Runfeng Lin
- Department of Chemistry, Laboratory of Advanced Materials and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, PR China
| | - Fan Zhang
- Department of Chemistry, Laboratory of Advanced Materials and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, PR China
| | - Myongsoo Lee
- Department of Chemistry, Laboratory of Advanced Materials and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, PR China
| | - Dongyuan Zhao
- Department of Chemistry, Laboratory of Advanced Materials and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, PR China
| | - Xiaomin Li
- Department of Chemistry, Laboratory of Advanced Materials and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, PR China.
| |
Collapse
|
23
|
Wang X, Enomoto R, Murakami Y. Ionic additive strategy to control nucleation and generate larger single crystals of 3D covalent organic frameworks. Chem Commun (Camb) 2021; 57:6656-6659. [PMID: 34128021 DOI: 10.1039/d1cc01857d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To generate large single crystals of 3D covalent organic frameworks, the active use of ionic additives, which can greatly impact crystal size, is proposed. The crystal size ranking was found to be in accordance with the Hofmeister series and Gutmann donor number, providing a useful strategy to enhance crystal size and, consequently, generate COF-300 single crystals of >200 μm in size.
Collapse
Affiliation(s)
- Xiaohan Wang
- School of Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
| | - Riku Enomoto
- School of Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
| | - Yoichi Murakami
- School of Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan. and PRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| |
Collapse
|
24
|
Yin C, Fang S, Shi X, Zhang Z, Wang Y. Pressure-modulated synthesis of self-repairing covalent organic frameworks (COFs) for high-flux nanofiltration. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118727] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
25
|
Frey L, Jarju JJ, Salonen LM, Medina DD. Boronic-acid-derived covalent organic frameworks: from synthesis to applications. NEW J CHEM 2021. [DOI: 10.1039/d1nj01269j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Modular, well-defined, and robust hierarchical functional materials are targets of numerous synthesis endeavors.
Collapse
Affiliation(s)
- Laura Frey
- Department of Chemistry, Ludwig-Maximilians-Universität (LMU) & Center for NanoScience (CeNS), Butenandtstr. 11, 81377 Munich, Germany
| | - Jenni J. Jarju
- International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | - Laura M. Salonen
- International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | - Dana D. Medina
- Department of Chemistry, Ludwig-Maximilians-Universität (LMU) & Center for NanoScience (CeNS), Butenandtstr. 11, 81377 Munich, Germany
| |
Collapse
|
26
|
Balch HB, Evans AM, Dasari RR, Li H, Li R, Thomas S, Wang D, Bisbey RP, Slicker K, Castano I, Xun S, Jiang L, Zhu C, Gianneschi N, Ralph DC, Brédas JL, Marder SR, Dichtel WR, Wang F. Electronically Coupled 2D Polymer/MoS 2 Heterostructures. J Am Chem Soc 2020; 142:21131-21139. [PMID: 33284624 PMCID: PMC9836045 DOI: 10.1021/jacs.0c10151] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Emergent quantum phenomena in electronically coupled two-dimensional heterostructures are central to next-generation optical, electronic, and quantum information applications. Tailoring electronic band gaps in coupled heterostructures would permit control of such phenomena and is the subject of significant research interest. Two-dimensional polymers (2DPs) offer a compelling route to tailored band structures through the selection of molecular constituents. However, despite the promise of synthetic flexibility and electronic design, fabrication of 2DPs that form electronically coupled 2D heterostructures remains an outstanding challenge. Here, we report the rational design and optimized synthesis of electronically coupled semiconducting 2DP/2D transition metal dichalcogenide van der Waals heterostructures, demonstrate direct exfoliation of the highly crystalline and oriented 2DP films down to a few nanometers, and present the first thickness-dependent study of 2DP/MoS2 heterostructures. Control over the 2DP layers reveals enhancement of the 2DP photoluminescence by two orders of magnitude in ultrathin sheets and an unexpected thickness-dependent modulation of the ultrafast excited state dynamics in the 2DP/MoS2 heterostructure. These results provide fundamental insight into the electronic structure of 2DPs and present a route to tune emergent quantum phenomena in 2DP hybrid van der Waals heterostructures.
Collapse
Affiliation(s)
- Halleh B. Balch
- Department of Physics, University of California, Berkeley, Berkeley, California 94720, United States,Kavli Energy Nanosciences Institute, University of California Berkeley, Berkeley, California 94720, United States,Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, California 94720, United States
| | | | | | | | | | - Simil Thomas
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332, United States,Department of Physics, Govt. College Nedumangad, Kerala 695541, India
| | - Danqing Wang
- Department of Physics, University of California, Berkeley, Berkeley, California 94720, United States,Kavli Energy Nanosciences Institute, University of California Berkeley, Berkeley, California 94720, United States,Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, California 94720, United States
| | - Ryan P. Bisbey
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States,Department of Chemistry, Cornell University, Ithaca, New York 14853, United States
| | - Kaitlin Slicker
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ioannina Castano
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Sangni Xun
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Lili Jiang
- Department of Physics, University of California, Berkeley, Berkeley, California 94720, United States,Kavli Energy Nanosciences Institute, University of California Berkeley, Berkeley, California 94720, United States,Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, California 94720, United States
| | - Chenhui Zhu
- Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, California 94720, United States
| | - Nathan Gianneschi
- Department of Chemistry, Department of Materials Science and Engineering, Department of Biomedical Engineering, Department of Pharmacology, International Institute for Nanotechnology, Simpson Querrey Institute, and Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, United States
| | - Daniel C. Ralph
- Department of Physics and Kavli Institute at Cornell, Cornell University, Ithaca, New York 14853, United States
| | - Jean-Luc Brédas
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332, United States,Department of Chemistry & Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Seth R. Marder
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - William R. Dichtel
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Feng Wang
- Department of Physics, University of California, Berkeley, Berkeley, California 94720, United States,Kavli Energy Nanosciences Institute, University of California Berkeley, Berkeley, California 94720, United States,Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, California 94720, United States
| |
Collapse
|
27
|
|
28
|
Jones CL, Hughes CE, Yeung HHM, Paul A, Harris KDM, Easun TL. Exploiting in situ NMR to monitor the formation of a metal-organic framework. Chem Sci 2020; 12:1486-1494. [PMID: 34163912 PMCID: PMC8179150 DOI: 10.1039/d0sc04892e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/17/2020] [Indexed: 12/21/2022] Open
Abstract
The formation processes of metal-organic frameworks are becoming more widely researched using in situ techniques, although there remains a scarcity of NMR studies in this field. In this work, the synthesis of framework MFM-500(Ni) has been investigated using an in situ NMR strategy that provides information on the time-evolution of the reaction and crystallization process. In our in situ NMR study of MFM-500(Ni) formation, liquid-phase 1H NMR data recorded as a function of time at fixed temperatures (between 60 and 100 °C) afford qualitative information on the solution-phase processes and quantitative information on the kinetics of crystallization, allowing the activation energies for nucleation (61.4 ± 9.7 kJ mol-1) and growth (72.9 ± 8.6 kJ mol-1) to be determined. Ex situ small-angle X-ray scattering studies (at 80 °C) provide complementary nanoscale information on the rapid self-assembly prior to MOF crystallization and in situ powder X-ray diffraction confirms that the only crystalline phase present during the reaction (at 90 °C) is phase-pure MFM-500(Ni). This work demonstrates that in situ NMR experiments can shed new light on MOF synthesis, opening up the technique to provide better understanding of how MOFs are formed.
Collapse
Affiliation(s)
- Corey L Jones
- School of Chemistry, Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Colan E Hughes
- School of Chemistry, Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Hamish H-M Yeung
- School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Alison Paul
- School of Chemistry, Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Kenneth D M Harris
- School of Chemistry, Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Timothy L Easun
- School of Chemistry, Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| |
Collapse
|
29
|
Feriante C, Evans AM, Jhulki S, Castano I, Strauss MJ, Barlow S, Dichtel WR, Marder SR. New Mechanistic Insights into the Formation of Imine-Linked Two-Dimensional Covalent Organic Frameworks. J Am Chem Soc 2020; 142:18637-18644. [PMID: 33058663 DOI: 10.1021/jacs.0c08390] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A more robust mechanistic understanding of imine-linked two-dimensional covalent organic frameworks (2D COFs) is needed to improve their crystalline domain sizes and to control their morphology, both of which are necessary to fully realize their application potential. Here, we present evidence that 2D imine-linked COFs rapidly polymerize as crystalline sheets that subsequently reorganize to form stacked structures. Primarily, this study focuses on the first few minutes of 1,3,5-tris(4-aminophenyl)benzene and terephthaldehyde polymerization, which yields an imine-linked 2D COF. In situ X-ray diffraction and thorough characterization of solids obtained using gentler isolation and activation methods than have typically been used in the literature indicate that periodic imine-linked 2D structures form within 60 s, which then form more ordered stacked structures over the course of several hours. This stacking process imparts improved stability toward the isolation process relative to that of the early stage materials, which likely obfuscated previous mechanistic conclusions regarding 2D polymerization that were based on products isolated using harsh activation methods. This revised mechanistic picture has useful implications; the 2D COF layers isolated at very short reaction times are easily exfoliated, as observed in this work using high-resolution transmission electron microscopy and atomic force microscopy. These results suggest improved control of imine-linked 2D COF formation can be obtained through manipulation of the polymerization conditions and interlayer interactions. Qualitatively similar results were obtained for analogous materials obtained from 2,5-di(alkoxy)terephthaldehyde derivatives, except for the COF with the longest alkoxy chains examined (OC12H25), which, although shown by in situ X-ray diffraction to be highly crystalline in the reaction mixture, is much less crystalline when isolated than the other COFs examined, likely due to the more severe steric impact of the dodecyloxy functionality on the stacking process.
Collapse
Affiliation(s)
- Cameron Feriante
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Austin M Evans
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Samik Jhulki
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Ioannina Castano
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Michael J Strauss
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Stephen Barlow
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - William R Dichtel
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Seth R Marder
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| |
Collapse
|
30
|
Kumar G, Singh M, Goswami R, Neogi S. Structural Dynamism-Actuated Reversible CO 2 Adsorption Switch and Postmetalation-Induced Visible Light C α-H Photocyanation with Rare Size Selectivity in N-Functionalized 3D Covalent Organic Framework. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48642-48653. [PMID: 33052646 DOI: 10.1021/acsami.0c14678] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The impact of dimensionality and flexibility on anticipated properties has prompted major research focus to three-dimensional covalent organic frameworks (3D COFs), where astute functionalization of porous channels for dynamic CO2 adsorption as well as size-exclusive C-H activation under eco-friendly condition are the most intriguing advanced applications. Herein, we report an imine-based, diamondoid COF that embraces one-dimensional porous channels in spite of ninefold interpenetration. A combination of intrinsic microporosity and pore wall decoration with accessible N atoms from linear strut renders this 3D COF display reasonable CO2 affinity with decent selectivity (CO2/N2: 64.2; CO2/CH4: 10.5) alongside worthy multicyclic CO2 uptake-release recurrence. Interestingly, the COF undergoes solvent-assisted alteration to a pore-stretched structure via -C═N- "pedal" motion with a concomitant enhancement in CO2 uptake, where steady reversibility of such structural dynamism instigates unprecedented CO2 adsorption switch up to seven consecutive cycles. Integration of 2,2'-bipyridyl units benefits anchoring of homogeneous catalyst to device first-ever Ru(Bpy)22+ hooked diamondoid COF (Ru-COF), which performs visible-light-triggered oxidative cyanation of tertiary amines at room temperature, using molecular oxygen as a selective oxidant in green solvent H2O. The photocatalyst-engineered COF manifests excellent recyclability and comparable activity to that of homogeneous catalyst. To the best of Ru-COF, atom-economic photocyanation is realized via in situ generated iminium ion, wherein larger-sized substrates exhibit insignificant conversion of α-aminonitriles and validate rarest size selectivity in oxidative Strecker reaction. This study not only demonstrates potential of 3D COF as next-generation dynamic CO2 adsorbent but also sheds light on tailor-made fabrication of smart functional material for promising catalytic applications through an environmentally benign route.
Collapse
Affiliation(s)
- Gaurav Kumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
- Inorganic Materials & Catalysis Division, CSIR-Central Salt & Marine Chemicals Research Institute (CSMCRI), Bhavnagar 364002, Gujarat, India
| | - Manpreet Singh
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
- Inorganic Materials & Catalysis Division, CSIR-Central Salt & Marine Chemicals Research Institute (CSMCRI), Bhavnagar 364002, Gujarat, India
| | - Ranadip Goswami
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
- Inorganic Materials & Catalysis Division, CSIR-Central Salt & Marine Chemicals Research Institute (CSMCRI), Bhavnagar 364002, Gujarat, India
| | - Subhadip Neogi
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
- Inorganic Materials & Catalysis Division, CSIR-Central Salt & Marine Chemicals Research Institute (CSMCRI), Bhavnagar 364002, Gujarat, India
| |
Collapse
|
31
|
Evans AM, Bradshaw NP, Litchfield B, Strauss MJ, Seckman B, Ryder MR, Castano I, Gilmore C, Gianneschi NC, Mulzer CR, Hersam MC, Dichtel WR. High-Sensitivity Acoustic Molecular Sensors Based on Large-Area, Spray-Coated 2D Covalent Organic Frameworks. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2004205. [PMID: 32939866 DOI: 10.1002/adma.202004205] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/07/2020] [Indexed: 06/11/2023]
Abstract
2D covalent organic frameworks (2D COFs) are a unique materials platform that combines covalent connectivity, structural regularity, and molecularly precise porosity. However, 2D COFs typically form insoluble aggregates, thus limiting their processing via additive manufacturing techniques. In this work, colloidal suspensions of boronate-ester-linked 2D COFs are used as a spray-coating ink to produce large-area 2D COF thin films. This method is synthetically general, with five different 2D COFs prepared as colloidal inks and subsequently spray-coated onto a diverse range of substrates. Moreover, this approach enables the deposition of multiple 2D COF materials simultaneously, which is not possible by polymerizing COFs on substrates directly. When combined with stencil masks, spray-coated 2D COFs are rapidly deposited as thin films larger than 200 cm2 with line resolutions below 50 µm. To demonstrate that this deposition scheme preserves the desirable attributes of 2D COFs, spray-coated 2D COF thin films are incorporated as the active material in acoustic sensors. These 2D-COF-based sensors have a 10 ppb limit-of-quantification for trimethylamine, which places them among the most sensitive sensors for meat and seafood spoilage. Overall, this work establishes a scalable additive manufacturing technique that enables the integration of 2D COFs into thin-film device architectures.
Collapse
Affiliation(s)
- Austin M Evans
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
| | - Nathan P Bradshaw
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | | | - Michael J Strauss
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
| | | | - Matthew R Ryder
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Ioannina Castano
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
| | | | - Nathan C Gianneschi
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
- Department of Biomedical Engineering, International Institute of Nanotechnology, Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute, Northwestern University, Evanston, IL, 60208, USA
| | | | - Mark C Hersam
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute, Northwestern University, Evanston, IL, 60208, USA
- Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - William R Dichtel
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
| |
Collapse
|
32
|
Maia RA, Carneiro LSDA, Cifuentes JMC, Buarque CD, Esteves PM, Percebom AM. Small-angle X-ray scattering as a multifaceted tool for structural characterization of covalent organic frameworks. J Appl Crystallogr 2020. [DOI: 10.1107/s1600576720011553] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Small-angle X-ray scattering (SAXS) is an accurate nondestructive method that requires a minimum of sample preparation and is employed to study porosity, morphology and hierarchical structures. Zeolites and silica are among the porous materials that are widely investigated by SAXS. However, studies of covalent organic frameworks (COFs) are still scarce. In the present study, SAXS was employed to investigate meso- and microporous COFs, affording insightful information about their nanostructure textural properties. SAXS is especially useful when combined with other characterization techniques, such as powder X-ray diffraction and N2 adsorption isotherms, emerging as an efficient tool to further characterize COFs. For microporous COFs, SAXS was used mainly to obtain quantitative values of surface roughness as a function of fractal parameters, in all cases indicating surface fractals of the large-scale scattering object, namely the `grain'. Mesoporous COF studies allowed elucidation of their hexagonal structure on the basis of their structure peaks; however, the main result lies in the distinction between the pore and the grain, which are described as a hierarchical structure by the Beaucage model and evaluated according to their fractality. These COFs generally exhibit pores with mass fractal features and grains with surface fractal features when they are submitted to post-functionalization, which may be due to the poor diffusivity of the functionalizing agents into the pores. In addition, a proposed aggregation description of the porous scattering objects was envisioned, based on small-angle scattering premises, which was confirmed for a microporous COF by high-resolution transmission electron microscopy.
Collapse
|
33
|
Graphene transistors for real-time monitoring molecular self-assembly dynamics. Nat Commun 2020; 11:4731. [PMID: 32948763 PMCID: PMC7501237 DOI: 10.1038/s41467-020-18604-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 08/28/2020] [Indexed: 01/17/2023] Open
Abstract
Mastering the dynamics of molecular assembly on surfaces enables the engineering of predictable structural motifs to bestow programmable properties upon target substrates. Yet, monitoring self-assembly in real time on technologically relevant interfaces between a substrate and a solution is challenging, due to experimental complexity of disentangling interfacial from bulk phenomena. Here, we show that graphene devices can be used as highly sensitive detectors to read out the dynamics of molecular self-assembly at the solid/liquid interface in-situ. Irradiation of a photochromic molecule is used to trigger the formation of a metastable self-assembled adlayer on graphene and the dynamics of this process are monitored by tracking the current in the device over time. In perspective, the electrical readout in graphene devices is a diagnostic and highly sensitive means to resolve molecular ensemble dynamics occurring down to the nanosecond time scale, thereby providing a practical and powerful tool to investigate molecular self-organization in 2D. Molecular self-assembly provides the desired functions to substrates, but investigation and control of its dynamics is challenging for the large area over which it must be detected. Here the authors report the use of graphene field effect devices to monitor with sub-second time resolution the photoinduced supramolecular assembly of a spiropyran derivative on graphene, covering an area of 100 × 100 μm2.
Collapse
|
34
|
Guan Q, Wang GB, Zhou LL, Li WY, Dong YB. Nanoscale covalent organic frameworks as theranostic platforms for oncotherapy: synthesis, functionalization, and applications. NANOSCALE ADVANCES 2020; 2:3656-3733. [PMID: 36132748 PMCID: PMC9419729 DOI: 10.1039/d0na00537a] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 07/15/2020] [Indexed: 05/08/2023]
Abstract
Cancer nanomedicine is one of the most promising domains that has emerged in the continuing search for cancer diagnosis and treatment. The rapid development of nanomaterials and nanotechnology provide a vast array of materials for use in cancer nanomedicine. Among the various nanomaterials, covalent organic frameworks (COFs) are becoming an attractive class of upstarts owing to their high crystallinity, structural regularity, inherent porosity, extensive functionality, design flexibility, and good biocompatibility. In this comprehensive review, recent developments and key achievements of COFs are provided, including their structural design, synthesis methods, nanocrystallization, and functionalization strategies. Subsequently, a systematic overview of the potential oncotherapy applications achieved till date in the fast-growing field of COFs is provided with the aim to inspire further contributions and developments to this nascent but promising field. Finally, development opportunities, critical challenges, and some personal perspectives for COF-based cancer therapeutics are presented.
Collapse
Affiliation(s)
- Qun Guan
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University Jinan 250014 P. R. China
| | - Guang-Bo Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University Jinan 250014 P. R. China
| | - Le-Le Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University Jinan 250014 P. R. China
| | - Wen-Yan Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University Jinan 250014 P. R. China
| | - Yu-Bin Dong
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University Jinan 250014 P. R. China
| |
Collapse
|
35
|
Wuest JD. Atoms and the void: modular construction of ordered porous solids. Nat Commun 2020; 11:4652. [PMID: 32938928 PMCID: PMC7495421 DOI: 10.1038/s41467-020-18419-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/21/2020] [Indexed: 11/21/2022] Open
Abstract
For millennia, humans have exploited the special properties of porous materials. Advances in recent years have yielded a new generation of finely structured porous materials that allow processes to be controlled at the molecular level. These materials are built by a strategy of modular construction, using molecular components designed to position their neighbors in ways that create predictable voids.
Collapse
Affiliation(s)
- James D Wuest
- Département de Chimie, Université de Montréal, Montréal, QC, H2V 0B3, Canada.
| |
Collapse
|
36
|
|
37
|
Hu J, Gupta SK, Ozdemir J, Beyzavi MH. Applications of Dynamic Covalent Chemistry Concept towards Tailored Covalent Organic Framework Nanomaterials: A Review. ACS APPLIED NANO MATERIALS 2020; 3:6239-6269. [PMID: 34327307 PMCID: PMC8317485 DOI: 10.1021/acsanm.0c01327] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Covalent organic frameworks (COFs) are a rapidly developing class of materials that has been of immense research interest during the last ten years. Numerous reviews have been devoted to summarizing the synthesis and applications of COFs. However, the underlying dynamic covalent chemistry (DCC), which is the foundation of COFs synthesis, has never been systematically reviewed in this context. Dynamic covalent chemistry is the practice of using thermodynamic equilibriums to molecular assemblies. This Critical Review will cover the state-of-the-art use of DCC to both synthesize COFs and expand the applications of COFs. Five synthetic strategies for COF synthesis are rationalized, namely: modulation, mixed linker/linkage, sub-stoichiometric reaction, framework isomerism, and linker exchange, which highlight the dynamic covalent chemistry to regulate the growth and to modify the properties of COFs. Furthermore, the challenges in these approaches and potential future perspectives in the field of COF chemistry are also provided.
Collapse
Affiliation(s)
- Jiyun Hu
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - Suraj K Gupta
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - John Ozdemir
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| | - M Hassan Beyzavi
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, United States
| |
Collapse
|