Chameleon phenomenon

From the electron density analysis it becomes clear that the cyclopropyl group is an electronic chameleon that can adjust to the different electron delocalization situations. Of course the real reason for this flexibility of the cyclopropyl group stems from the phenomenon of surface delocalisation (see Chapter 2 of this volume)27 85. The three CC bonds of... 

Additionally, the film formation properties and outstanding mechanical properties of aramids make these polymers suitable for the production of organic light emitting diodes (OLEDs), and specifically polymer hght emitting diodes (PLEDs). Despite this, classical condensation polymers are rarely studied for these applications. Moreover, some luminescence materials also show electrochromism (EC), a phenomenon in which materials exhibit a reversible change in optical properties when they are oxidized and reduced. Electrochromic materials are now been exploited in diverse applications such as mirrors, displays, windows, and earth-tone chameleon materials [95]. 

Chromic materials are the general term referring to materials, which their eolor changes by the external stimulus. Due to color changing properties, chromic materials are also ealled chameleon materials. This eolor ehanging phenomenon is caused by the external stimulus and... 

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