1
|
Jiang B, Zhang J, Yu K, Jia Z, Long H, He N, Zhang Y, Zou Y, Han Z, Li Y, Ma L. Dynamic Cleavage-Remodeling of Covalent Organic Networks into Multidimensional Superstructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2404446. [PMID: 38837518 DOI: 10.1002/adma.202404446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/19/2024] [Indexed: 06/07/2024]
Abstract
Superstructures with complex hierarchical spatial configurations exhibit broader structural depth than single hierarchical structures and the associated broader application prospects. However, current preparation methods are greatly constrained by cumbersome steps and harsh conditions. Here, for the first time, a concise and efficient thermally responsive dynamic synthesis strategy for the preparation of multidimensional complex superstructures within soluble covalent organic networks (SCONs) with tunable morphology from 0D hollow supraparticles to 2D films is presented. Mechanism study reveals the thermally responsive dynamic "cleavage-remodeling" characteristics of SCONs, synthesized based on the unique bilayer structure of (2.2)paracyclophane, and the temperature control facilitates the process from reversible solubility to reorganization and construction of superstructures. Specifically, during the process, the oil-water-emulsion two-phase interface can be generated through droplet jetting, leading to the preparation of 0D hollow supraparticles and other bowl-like complex superstructures with high yield. Additionally, by modulating the volatility and solubility of exogenous solvents, defect-free 2D films are prepared relying on an air-liquid interface. Expanded experiments further confirm the generalizability and scalability of the proposed dynamic "cleavage-remodeling" strategy. Research on the enrichment mechanism of guest iodine highlights the superior kinetic mass transfer performance of superstructural products compared to single-hierarchical materials.
Collapse
Affiliation(s)
- Bo Jiang
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu, 610064, P.R. China
| | - Jie Zhang
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu, 610064, P.R. China
| | - Kaifu Yu
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu, 610064, P.R. China
| | - Zhimin Jia
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu, 610064, P.R. China
| | - Honghan Long
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu, 610064, P.R. China
| | - Ningning He
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu, 610064, P.R. China
| | - Yingdan Zhang
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu, 610064, P.R. China
| | - Yingdi Zou
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu, 610064, P.R. China
| | - Ziqian Han
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu, 610064, P.R. China
| | - Yang Li
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu, 610064, P.R. China
| | - Lijian Ma
- College of Chemistry, Key Laboratory of Radiation Physics & Technology, Ministry of Education, Sichuan University, Chengdu, 610064, P.R. China
| |
Collapse
|
2
|
Cheng C, Yu J, Xu D, Wang L, Liang G, Zhang L, Jaroniec M. In-situ formatting donor-acceptor polymer with giant dipole moment and ultrafast exciton separation. Nat Commun 2024; 15:1313. [PMID: 38350993 PMCID: PMC10864376 DOI: 10.1038/s41467-024-45604-5] [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: 09/22/2023] [Accepted: 01/30/2024] [Indexed: 02/15/2024] Open
Abstract
Donor-acceptor semiconducting polymers present countless opportunities for application in photocatalysis. Previous studies have showcased their advantages through direct bottom-up methods. Unfortunately, these approaches often involve harsh reaction conditions, overlooking the impact of uncontrolled polymerization degrees on photocatalysis. Besides, the mechanism behind the separation of electron-hole pairs (excitons) in donor-acceptor polymers remains elusive. This study presents a post-synthetic method involving the light-induced transformation of the building blocks of hyper-cross-linked polymers from donor-carbon-donor to donor-carbon-acceptor states, resulting in a polymer with a substantial intramolecular dipole moment. Thus, excitons are efficiently separated in the transformed polymer. The utility of this strategy is exemplified by the enhanced photocatalytic hydrogen peroxide synthesis. Encouragingly, our observations reveal the formation of intramolecular charge transfer states using time-resolved techniques, confirming transient exciton behavior involving separation and relaxation. This light-induced method not only guides the development of highly efficient donor-acceptor polymer photocatalysts but also applies to various fields, including organic solar cells, light-emitting diodes, and sensors.
Collapse
Affiliation(s)
- Chang Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, P. R. China.
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China.
| | - Difa Xu
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, 98 Hongshan Road, Changsha, 410022, P.R. China
| | - Lei Wang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Material and Devices, Hubei University of Arts and Science, Xiangyang, 441053, P. R. China
| | - Guijie Liang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Material and Devices, Hubei University of Arts and Science, Xiangyang, 441053, P. R. China
| | - Liuyang Zhang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China.
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH, 44242, USA.
| |
Collapse
|