I may not understand how conscious awareness works, but I do know enough about material science to say that it can't be defined by material reactions alone. There is much talk about awareness being achieved by information flows through the neurological network of the brain, But information is not information until it is perceived - and the big question is how can the content of many brain cells be perceived by another material entity? It leads to a circular problem of how the information in any material entity can be perceived, rather than just induce a reaction in other material entities? As I have said previously, this is a very complex subject which is difficult to elaborate on in a forum such as this, so I am trying to give a brief indication of the problem.
Firstly, if we do not fully understand how something works, then we need to keep an open mind rather than claiming we 'know enough'.
Secondly, 'material science' is so nineteenth century; in reality, there is just 'science', and the frontiers of our scientific knowledge now transcend earlier naive understandings of matter and energy.
Thirdly, your concept of information is similarly superficial. It might be good enough for everyday use, but the concept of information is far more profound and subtle in science. At this level it is nonsense to claim that only human brains can perceive information. In science, information is arguably the most profound concept of all, transcending not just biological systems, but space, time, matter and energy,