1988, 110, 8718.8719. 241. "Poly(3-n-butyl-2,5-diethynylenethiophenylene): A Soluble Polymer Containing Diacetylene Units and Its Conversion to a Highly-Cross-Linked Organic Solid", Callstrom, M. R., Neenan, T. X. and Whitesides, G. M., Macromolecules, 1988, 21, 3528-3530. 240. "Hyper-Goss-Linked Organic Solids: Preparation