Nanosensor polymer developed by Chinese scientists respond to metal ions and temperature. Optical nanosensors have a wide range of applications including detection of DNA sequences, thermometer, props and a bar code. Up to now this universal approach is to use gold or silver nanocrystal or semiconductor kuatum also point to get the desired color. However, it has significant drawbacks as the colors they produced are not tunable, they require the synthesis conditions become rough and can jiga cytotoxins. Jinying Yuan of Tsinghua University, Beijing, making a colorful optical nanosensor based on porphyrin copolymer consisting of three blocks ABCyang resolve these issues and respond to metal ions and temperature. This allows the use of both as an ion detector and ultra-sensitive thermometer. Copolymer solution can be used with a variety of metal ions mmberikan each with a different color and allow Yuan to create nanoarray are able to deliver nine color signals simultaneously. 'We can clearly identify which metal trigger changes in specific colors and to eliminate some metal ions which can not cause color changes,' explains Yuan. In addition, the transition nanosensor incredible colors in the range of 35-61 ° C. Thermochromic properties of a wide range of unexpected nanosensor could allow their use in ultra-sensitive thermometric unity. Richard Hoogenboom, an expert on copolymers of Radboud University, Nijmegen, The Netherlands, was impressed with the 'outstanding results'. He said he has not seen "any instance where only one polymer allows for a broad spectrum of color and a sense daeran temperature just by adding metal ions'. Tim Yuan is currently developing a similar copolymer porhyrin groups that form hydrogels in aqueous solution as a gel material which can be applied to materials more readily than the solution