Japanese researchers reported on the latest issue of the British "Nature News" website that they used simple chemical reactions to develop a new gel-like material that can be naturally repaired even if damaged. This gel-like substance can be freely adsorbed or separated, and even if it is cut, it can be repaired by itself.
The research team led by Harada Harada of the University of Osaka, Japan, made this new material using cyclodextrin and ferrocene. Cyclodextrins look like a reduced keyhole, and ferrocene is the equivalent of a key that can just be inserted in. In a chemical reaction, the two can be combined together in seconds to form a gel-like substance.
The researchers cut the gelatinous material with a knife and put it together. Within hours to 24 hours, the extracted key was inserted into the keyhole again. The two gels were rejoined together. It also disappeared and it was restored. If the oxidizer is applied to the cut surface, the cut two parts will not be combined again. However, if the reducing agent is applied again, the new material can not only restore the adsorption force but also improve its self-healing ability.
If the redox reaction of the ferrocene structure is used, the gel can also be made liquid. The research team is studying whether this kind of liquid can be injected into the human body through tiny tubes and it will make the blood vessels that provide nutrition to the tumor gel again, thus blocking blood vessels and cutting off the nutrient supply of the absolute tumor to treat cancer.
Researchers said that this discovery will help develop new materials, such as plastics, that will last longer, and is expected to be used in the medical field.
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