Thank you so much for your post! To help explain my position: Dictionary of Philosophy of Mind
materialism - The view that everything that actually exists is material, or physical. Many philosophers and scientists now use the terms `material' and `physical' interchangeably (for a version of physicalism distinct from materialism, see physicalism). Characterized in this way, as a doctrine about what exists, materialism is an ontological, or a metaphysical, view; it is not just an epistemological view about how we know or just a semantic view about the meaning of terms. physicalism - The view that everything that is real is, in some sense, really physical. See also materialism, knowledge argument, non-reductive physicalism.
I'm with Phaedrus on this. Penrose is not a materialist, though he might be a physicalist. He never even addresses unconsciousness, which he says exists. And he asserts that consciousness cannot be simulated. He is not a computationalist. I do take issue with Penrose in that he ties awareness to the body. I'm not convinced that is the case.