Sun Baiwang and Luo Yanghui research team of Southeast University: dynamic 3D hydrogen bonded organic framework materials (Hof) with high hydrophilicity

In recent years, the development and application of hydrogen bonded organic frameworks (HOFs) have attracted more and more attention Compared with traditional crystalline porous materials such as MOFs (metal organic frameworks), zifs (zeolitic organic frameworks) and COFS (covalent organic frameworks), HOFs materials are connected by non covalent intermolecular forces (hydrogen bonds, π - π stacking, etc.) and have the advantages of low density, high solubility, high structural adjustability and easy recycling What's more, the metal free properties of HOFs endow it with good biocompatibility and low cytotoxicity, which shows great potential in drug delivery and biological application Although there are many excellent properties, only a few HOFs materials have been reported, and most of them are single component crystalline materials Recently, sun Baiwang and Luo Yanghui of Southeast University have prepared a three-dimensional porous Hof based on the heme compound TCPP The HOF material has a pore structure from one-dimensional to three-dimensional, controllable morphology and can specifically adsorb water Relevant achievements were published in advanced functional materials (DOI: 10.1002 / ADFM 201804822) under the title of "a dynamic three dimensional hydraulic bonded organic frameworks with high water affinity" Brief introduction of sun Baiwang and Luo Yanghui research teams of Southeast University Sun Baiwang and Luo Yanghui have been committed to the design, development and application of functional materials, and have made a series of research results in the preparation and application of functional HOFs, MOFs materials, functional nano materials and ultra-thin two-dimensional materials (adv funct Mater 2018, 1804822; J Phys Chem Lett 2018 , 9 , 2158; ACS Appl Mater Interfaces
2018 , 10 , 28860 ; ACS Appl.Mater Interfaces 2018 , 10 , 9495; ACS Appl Mater Interfaces 2018 , 10 , 16666; ACS Appl Mater Interfaces 2018 , 10 , 30930; J Mater Chem B
2018 , 6 , 5876; Cryst Growth Des 2017 , 17 , 2576; J Mater Chem C
2016 ,
4 , 8061; Inorg.Chem 2016 , 55 , 8147 ）。
Introduction to Professor Sun Baiwang, Professor Sun Baiwang, doctoral supervisor He has presided over and completed many projects of NSFC, Jiangsu Province prospective joint research project and enterprise cooperation project At present, the projects undertaken include National Natural Science Foundation projects, special international cooperation projects of the Ministry of science and technology, provincial and ministerial projects, enterprise cooperation projects, etc So far, it has published more than 150 research papers and applied for more than 10 national patents in academic journals at home and abroad Luo Yanghui, tutor of master's degree, presided over one National Natural Science Foundation project, one natural science project of Jiangsu Province, published more than 80 research papers in academic journals at home and abroad, and applied for 5 national patents Frontier research achievements: dynamic 3D hydrogen bonded organic framework material (Hof) with high hydrophilicity and its related compounds are widely used in biochemistry, pharmacy, analytical chemistry, synthetic chemistry, material science and other fields, so it is particularly important to build HOFs materials related to porphyrins First, the research team used the "isometric eutectic" strategy (Figure 1) to prepare the HOF material tcpp-1,3-dpp with one-dimensional porous band structure based on heme compound TCPP Fig 1 Tcpp-1,3-dpp (source: adv funct Mater.) prepared by "isometric eutectic" strategy, then, in the crystal structure, the one-dimensional porous band structure further accumulates into three-dimensional porous Hof through weak π - π interaction (Fig 2) It is found that under pressure, the one-dimensional band structure in the three-dimensional Hof slips outward (Fig 3), and the lingcolumnar morphology of the three-dimensional Hof changes into two-dimensional flake morphology (Fig 2); while when the two-dimensional flake morphology of the HOF is soaked in water and fully adsorbed with water, it can return to lingcolumnar morphology All of these indicate that the HOF material prepared by our group has the dynamic slip characteristics of one-dimensional porous strip, which is the first dynamic Hof material reported at present Fig 2 (a) one dimensional porous strip in Hof material, (b) three dimensional dynamic stacking and (c) three dimensional, (d) two dimensional morphology transformation (source: adv funct Mater.) Fig 3 Dynamic slip diagram of one-dimensional porous strip (source: adv funct Mater.) what's more, the HOF material shows specific adsorption on water and has excellent recycling performance (Fig 4), which is expected to be applied in the field of industrial gas (CO2, H2, CH4) drying Figure 4 Hof material tcpp-1, 3-dpp adsorption isotherm curve at room temperature (a) and water adsorption analytical cycle (b) (source: adv funct Mater.) this research project is supported by National Natural Science Foundation of China, Jiangsu Natural Science Foundation and high-level thesis project of Southeast University Master's students he Xiaotong, Hong Danli and Chen Chen are mainly involved in this research Nowadays, people and scientific research have been paid more and more attention in the economic life China has ushered in the "node of science and technology explosion" Behind the progress of science and technology is the work of countless scientists In the field of chemistry, in the context of the pursuit of innovation driven, international cooperation has been strengthened, the influence of Returned Scholars in the field of R & D has become increasingly prominent, and many excellent research groups have emerged in China For this reason, CBG information adopts the 1 + X reporting mechanism CBG information, chembeangoapp, chembeango official microblog, CBG wechat subscription number and other platforms jointly launch the column of "people and scientific research", approach the domestic representative research group, pay attention to their research, listen to their stories, record their demeanor, and explore their scientific research spirit.