Professor Huang Wei academician, de Bering Sea team: a major breakthrough in the field of organic polymer nano
Flexible Electronics Research Institute, Northwestern Polytechnical University (Flexible Electronic Frontier Science Center) Huang academician and Nanjing University of Posts and Information Materials and Nanotechnology Institute solution Bering Sea Professor group major breakthrough in the field of nanotechnology organic polymers, research \”on centrosymmetric molecular arrangement stereoselective lattice and the lattice of polyethylene\” ( \”stereoselective gridization and polygridization with centrosymmetric molecular packing \”) on April 9 at Nature communications (\” Nature communications \”) published online. from Alan J. Heeger equal to 1976 and found that the conductive polymer Nobel Prize in Chemistry in 2000. Since organic semiconductors and conceived on the basis of its technology as the most flexible electronic information industry and the future bearer of intelligent manufacturing vector potential. However, until today, flexible electronics technology, especially organic electronics technology still faces enormous challenges, both in organic display (OLED), organic laser (OL), organic photovoltaic (OPV), or in organic field effect transistors (OFET) , and implementation aspects sensing information storage and memristive calculation. The organic wide band gap semiconductor, for example, its overall performance falls far the material parameters to GaN / SiC inorganic semiconductor represented. At present, only large-scale commercialization of OLED achieved, while also facing a quantum dot, fierce competition from emerging perovskite materials, such as two-dimensional. In this context, the return of organic semiconductors as well as deep-seated nature of the physical and chemical basis for exploring issues of great scientific significance and technical value. In recent years, Huang Hai Academy of reconciliation so that a team led by Professor for Molecular limitations proposed the concept of organic nano-polymer (Organic Nanopolymers) of and created a class of organic nano-polymer polyethylene grid [123 ] the new direction ( Chin J Polym Sci 35, 87-97(2017). Https://doi.org/10.1007/s10118-016-1856-7).refers to a class of organic nano monomer as a repeating unit polymer nano covalently linked together, such skeletal structure may be both molecular chain with properties of the carbon nano solution processing advantages. Innovation is the key to the structure of the development of synthetic strategies open in this direction, synthetic soluble, and clear three-dimensional structure of the selected cell type poly-nano-polymer photovoltaic materials is not only the foundation, but also for the advanced model reveals the relationship between structure and properties is particularly important . In this study, the design team A2B2 type synthons not only overcome the problem of cross-linking, but also can effectively control the tacticity of the polymer nanometers. Between them\’s \”Theory synergistic repellent molecular absorption (the SMART)\” starting using electron π-π stacking between the receptor and attractive to a repulsive force of the protonated aza-fluorene, regulation team from surplus electrophile antiparallel centrosymmetric molecular arrangement pattern, thereby overcoming the thermodynamic equilibrium disturbance during the Friedel-Crafts reaction, to achieve the meso selectivity poly lattice with lattice reaction. Because chipping grid A1B1 synthesis of dimers formed in 1948 with the Dutch master prints Moli Ci · Kenailisi Escher created the \”hand painted hand\” there is a corresponding relationship, eventually they will this type of organic polymeric nano was named freehand hand frame (drawing hands-type Gridarene), this definition also represents a figurative meaning nano connected, expected future grid hand-drawn hand really be an effective way of chemical nano-interconnect. It is worth mentioning that their synthetic poly-frame hand-drawn hand to show the key features of organic polymer nano become an important milestone in the field. Polymer Physics Research shows that the lattice selected as meso nanopolymeric (length of 20 ~ 30 nm), such alternating chain backbone structure and having a Mark-Houwink exponent of 1.651 hydrodynamic radius Rh ~ M1. dependency 13, demonstrating freehand hand frame polyethylene exhibits rigid rod backbone, the polymer having the desired characteristics nanometer. Moreover, molecular dynamics simulations show that meso polyethylene grid configuration having a main chain is still highly anisotropic rod-shaped skeleton even in a collapsed state, and exhibits a ratio of racemic cell polyethylene backbone stronger resistance to collapse ability. stereoselectiveA major breakthrough in organic nano-polymer coincides with the 100th anniversary of the Nobel Prize in Chemistry winner of polymer science concepts Staudinger (Hermann Staudinger) proposed, I believe they created an organic polymer nano-direction to turn on High molecular sciences new chapter . Huang Academy of said organic polymer nano plastic electronics will provide new solutions in the future they will work potential impact of a new generation of organic wide bandgap semiconductor material, electrically pumped laser, flexible electronic device, the printed display technology and information storage and nerve related technical frontiers of scientific computing, and organic form of THz technology. The study by the National Natural Science Foundation project General Program (21774061), the National Natural Science Foundation Research Program Integrated Project (91,833,306), Jiangsu Province, \”six talents peak\” Innovative team project (XCL-CXTD-009) and other projects funding, as well as the strong support of Professor Lu Dan Jilin University.