Second-order nonlinear optical poly(organophosphazenes): synthesis and nonlinear optical characterization Allcock, Harry R. ; Dembek, Alexa A. ; Kim, Chulhee ; Devine, Robert L. S. ; Shi, Yongqiang ; Steier, William H. ; Spangler, Charles W. Abstract Publication: Macromolecules Pub Date: September 1991 DOI: 10.1021/ma00005a006 Bibcode: 1991MaMol..24.1000A