Electron acceptors for nonlinear optical chromophores
Electron acceptor compounds, nonlinear optical chromophores made from the electron acceptor compounds, methods for making the electron acceptor compounds and nonlinear optical chromophores, lattices that include the nonlinear optical chromophores, and devices that include the nonlinear optical chromophores.
1. A compound having the formula:
wherein R 1 is selected from the group consisting of 4-methoxymethyl phenyl ether, 3-methoxymethyl phenyl ether, 2-thiophenyl, 5-phenyl-2-thiophenyl, and 5-(3-methoxymethyl propyl ether)-2-thiophenyl.
2. A nonlinear optical chromophore, comprising a donor group (D) conjugated to an acceptor group (A) through a π-bridge group (π) having the formula D-π-A,
wherein A has the formula:
wherein R 1 is selected from the group consisting of 4-methoxymethyl phenyl ether, 3-methoxymethyl phenyl ether, 2-thiophenyl, 5-phenyl-2-thiophenyl, and 5-(3-methoxymethyl propyl ether)-2-thiophenyl.
3. A method for making a nonlinear optical chromophore having a donor group (D) conjugated to an acceptor group (A) through a π-bridge group (π) and having the formula D-π-A, comprising
reacting a donor-bridge compound having an aldehyde functionality and having the formula D-π-CHO with an acceptor compound having the formula:
wherein R 1 is selected from the group consisting of 4-methoxymethyl phenyl ether, 3-methoxymethyl phenyl ether, 2-thiophenyl, 5-phenyl-2-thiophenyl, and 5-(3-methoxymethyl propyl ether)-2-thiophenyl.