Abstract

The polymerization and depolymerization of liquid sulfur refers, respectively, to the processes of chain growth and chain scission promoted by changing thermodynamic conditions. These structural transitions cause major optical and electrical consequences, including: (1) color change from yellow to orange to red, (2) peaked high angle and low angle scattering and minimum in transmission of He–Ne laser light at the structural changes, (3) a decrease in the current induced by a pulsed ruby laser above the polymerization temperature T_p compared with below T_p, (4) two changes in the sign of the temperature coefficient of resistance in the vicinity of T_p and the depolymerization temperature T_d, and (5) superlinear current–voltage characteristics above T_d. The data are interpreted as being suggestive of the structure of a liquid being better described by a nonuniformity rather than random network model.

© 1976 Optical Society of America

Anomalous light scattering in liquid sulfur at the polymerization transition

Margherita Zanini and Jan Tauc
Appl. Opt. 15(12) 3149-3154 (1976)

Variation in optical transmission and electrical resistance in a single sulfur liquid droplet during polymerization

Gary C. Vezzoli and L. W. Doremus
Appl. Opt. 16(2) 433-435 (1977)

Temperature dependence of index of refraction, reflection, and extinction coefficient of liquid sulfur in the 0.4–2.0-μm wavelength range

R. Sasson and E. T. Arakawa
Appl. Opt. 25(16) 2675-2680 (1986)

Multicomponent photopolymer systems for volume phase holograms and grating devices

W. J. Tomlinson, E. A. Chandross, H. P. Weber, and G. D. Aumiller
Appl. Opt. 15(2) 534-541 (1976)

Antireflection coating prepared by plasma polymerization of perfluorobutene-2

T. Wydeven and R. Kubacki
Appl. Opt. 15(1) 132-136 (1976)