Tuning the Topology of Three-Dimensional Covalent Organic Frameworks via Steric Control: From pts to Unprecedented ljh

2021 ◽  
Author(s):  
Yang Xie ◽  
Jian Li ◽  
Cong Lin ◽  
Bo Gui ◽  
Chunqing Ji ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Covalent Organic Frameworks ◽  
Steric Control

Three-Dimensional Covalent Organic Frameworks with hea Topology

2021 ◽  
Author(s):  
Zonglong Li ◽  
Li Sheng ◽  
Chouhung Hsueh ◽  
Xiaolin Wang ◽  
Hao Cui ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Covalent Organic Frameworks

scholarly journals Transformation Between 2D and 3D Covalent Organic Frameworks via Reversible [2+2] Cycloaddition

2020 ◽  
Author(s):  
Thaksen Jadhav ◽  
Yuan Fang ◽  
Cheng-Hao Liu ◽  
Afshin Dadvand ◽  
Ehsan Hamzehpoor ◽  
...  
Keyword(s):  
Band Structure ◽  
Absorption Edge ◽  
Room Temperature ◽  
Three Dimensional ◽  
Cross Linking ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
Doping Behavior ◽  
2D Polymers ◽  
2D And 3D

We report the first transformation between crystalline vinylene-linked two-dimensional (2D) polymers and crystalline cyclobutane-linked three-dimensional (3D) polymers. Specifically, absorption-edge irradiation of the 2D poly(arylenevinylene) covalent organic frameworks (COFs) results in topological [2+2] cycloaddition cross-linking the π-stacked layers in 3D COFs. The reaction is reversible and heating to 200°C leads to a cycloreversion while retaining the COF crystallinity. The resulting difference in connectivity is manifested in the change of mechanical and electronic properties, including exfoliation, blue-shifted UV-Vis absorption, altered luminescence, modified band structure and different acid-doping behavior. The Li-impregnated 2D and 3D COFs show a significant ion conductivity of 1.8×10<sup>−4</sup> S/cm and 3.5×10<sup>−5</sup> S/cm, respectively. Even higher room temperature proton conductivity of 1.7×10<sup>-2</sup> S/cm and 2.2×10<sup>-3</sup> S/cm was found for H<sub>2</sub>SO<sub>4</sub>-treated 2D and 3D COFs, respectively.

Three-Dimensional Covalent Organic Frameworks with Cross-Linked Pores for Efficient Cancer Immunotherapy

Nano Letters ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 7979-7988
Author(s):  
Liang Zhang ◽  
Lei-Lei Yang ◽  
Shu-Cheng Wan ◽  
Qi-Chao Yang ◽  
Yao Xiao ◽  
...  
Keyword(s):  
Cancer Immunotherapy ◽  
Three Dimensional ◽  
Covalent Organic Frameworks

Highly Conjugated Three-Dimensional Covalent Organic Frame- works with Enhanced Li-ion Conductivity as Solid-State Electrolytes for High-Performance Lithium Metal Batteries

2022 ◽  
Author(s):  
Shi Wang ◽  
Xiang-Chun Li ◽  
Tao Cheng ◽  
Yuan-Yuan Liu ◽  
Qiange Li ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Transport ◽  
High Performance ◽  
Three Dimensional ◽  
Ion Conductivity ◽  
Covalent Organic Frameworks ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Li Ion ◽  
Solid State Electrolytes

Covalent organic frameworks (COFs) with well-tailored channels have the potential to efficiently transport ions yet remain to be explored. The ion transport capability is generally limited due to the lack...

Three-dimensional porphyrin-based covalent organic frameworks with tetrahedral building blocks for single-site catalysis

2019 ◽  
Vol 43 (43) ◽  
pp. 16907-16914 ◽  
Author(s):  
Yong Liu ◽  
Xiaodong Yan ◽  
Tao Li ◽  
Wen-Da Zhang ◽  
Qiu-Ting Fu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Three Dimensional ◽  
Building Blocks ◽  
Single Site ◽  
Covalent Organic Frameworks ◽  
Excellent Performance ◽  
Biomimetic Catalysis ◽  
Single Site Catalysts

Two 3D porphyrin-based covalent organic frameworks were synthesized as single-site catalysts and exhibited excellent performance in biomimetic catalysis and oxygen evolution reactions.

scholarly journals Three-dimensional Salphen-based Covalent–Organic Frameworks as Catalytic Antioxidants

2019 ◽  
Vol 141 (7) ◽  
pp. 2920-2924 ◽  
Author(s):  
Shichen Yan ◽  
Xinyu Guan ◽  
Hui Li ◽  
Daohao Li ◽  
Ming Xue ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Covalent Organic Frameworks

Isostructural Three‐Dimensional Covalent Organic Frameworks

2019 ◽  
Vol 58 (29) ◽  
pp. 9770-9775 ◽  
Author(s):  
Chao Gao ◽  
Jian Li ◽  
Sheng Yin ◽  
Guiqing Lin ◽  
Tianqiong Ma ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Covalent Organic Frameworks
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