Although organic materials are often used as semiconductors, such as organic light emitting diodes and organic transistors, organic materials with high conductivity like metals are still very rare. One problem in the field of organic metal research and development is that good electrical conductivity requires the material to have a high degree of crystallinity, but the crystal structure is not conducive to the processing and shaping of the material. Now, the research team at the University of Strasbourg in France has developed a new class of organic materials that not only has high electrical conductivity but also is very soft and elastic, and has successfully overcome the above problems.
The latest study, published in the Journal of the American Chemical Society, states that when irradiated with light pulses, the material can recombine its molecules to correct structural defects. Therefore, the new material can be assembled into a low-crystallinity structure and then passed through a Light pulses are converted into a highly conductive material.
“Historically, inorganic materials have been used, such as silicon, copper, and silver that have been impregnated with impurities, and many electronic devices have been developed,†said Nicholas Jessup, a professor at the University of Strasbourg. “These materials come from limited natural resources. Resources need to be extracted and processed expensively before they can be applied to the manufacturing industry.Furthermore, we also face the big problem of e-waste because many of the inorganic materials used in electronic devices are quite toxic to the environment, and recycling is not only difficult but also costly. Organic metal offers another option, it is cheaper, easier to produce, and environmentally friendly, and in addition to replacing inorganic materials for the electronic devices we currently use, we can also use them to build devices with new properties and structures. â€
According to the report of the Physicist Organization Network on August 19, this new material is a one-dimensional supramolecular polymer composed of a stack of 3-aminotriarylamine (TATA) molecules. Although these organic nanowires are initially affected by structural defects like other organic materials, the application of a relatively low-energy light pulse can correct the angular error of TATA molecules during stacking, actually giving the polymer a self-healing effect. Ability. Experimental results show that light pulse irradiation increases the conductivity of this supramolecular polymer by four orders of magnitude. This is also the first demonstration that supramolecular polymers can possess electronic, magnetic and optical characteristics similar to those of the best conjugated polymers.
Due to its advantages of light weight, low cost, and one-time use, the highly conductive organic metal has a wide range of applications in the field of organic electronic devices, including transparent electrodes, printed electronic circuits, thermoelectric materials, and memory devices.
"Future research plans will cover both the application of these materials in equipment and the exploration of their basic properties." Jacep said, "In terms of applications, we are trying to integrate these organic components into electronic circuits. Of metal interconnects to test the efficiency of these materials in solar cells, and to develop methods for controlling the structure of vertical devices. Basic research work involves the manipulation of optical and plasmon photonics and the use of materials Further elucidation and control of electrical conductivity."(Chen Dan)
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