Complex sentence: Proctor and his associates were also one of several research groups who reported a highly-conductive form of polyacetylene well-before the 1977 rediscovery of such compounds which eventually led to the 2000 Nobel prize in Chemistry "for the discovery and development of conductive polymers".
Split into simpler sentences: Proctor and his associates were also one of several research groups who reported a highly-conductive form of polyacetylene well-before the 1977 rediscovery of such compounds. This rediscovery eventually led to the 2000 Nobel prize in Chemistry "for the discovery and development of conductive polymers".