Patent ID: 8859698

Claim:
A method of preparing a sulfur-containing polymer comprising a plurality of internal units represented by the following formula (1a), wherein n is greater than 1, comprising the following polymerization step: wherein said precursor comprises alkyne having one or more acetylene groups and thiol having one or more thiol groups; R is remainder of said thiol excluding said thiol groups, R′ is remainder of said alkyne excluding said acetylene groups, R and R′ are independently selected from the group consisting of: wherein X is a heteroatom; y is ≧1; R 1 is selected from the group consisting of alkyl, alkenyl, acyl, aryl, heteroaryl, cycloalkyl, heterocycloalkyl, and heteroalkyl; M is a metal or an organometallic group; and each represents a stereogenic cis or trans moiety.