I will be upfront -- I am not a Chemist, nor do I have much experience beyond high school Chemistry.
I have always had a vested interest in chemistry, but my engineers brain has always left me wondering -- Where do I start if I want to design a new chemical with certain properties? I have attempted to research via Google, but to no avail.
Like I mentioned above, I am very mechanically minded, and to design say a transmission is simple enough - just select what type of gear(s) (..or design your own) put them all together, and BAM! You've got a transmission! Chemicals...could possibly kill you if you screw up...
I have a strong feeling that this question is a field of study in and of itself, so I do appreciate any answers.