A family of nonlinear optical chromophores has been synthesized containing novel donor systems based on functionalized guanidines. Chromophores utilizing these donor systems display superior transparency and stability properties. The unusual and highly desirable characteristics of these chromophores make them very promising candidates for electro-optic applications. Systematic study of the molecular hyperpolarizabilities and bulk electro-optic properties of polymers containing these chromophores is being used to guide optimization of these systems.

The International Court of Justice was brought into being by the Charter of the United Nations (Articles 7(1), 36(3), and 92-96), and by the Statute of the Court which was made an integral part of the Charter; both of which instruments were signed at San Francisco on June 26, 1945. The most important difference between the Statute of the new Court and that of its predecessor, the Permanent Court of International Justice, on which the new Statute was based, was that the new Court was to be one of the “principal organs” of the United Nations. The Charter and the new Statute entered into force on October 24, 1945. After the election of the Court’s first members the new Court met for the first time in the Peace Palace at The Hague on April 1, 1946, under the presidency of Judge Guerrero, with Judge Basdevant as Vice-President.

We have developed two new classes of highly active and thermally stable nonlinear optical (NLO) chromophores based on the use of efficient thiophene conjugating units, a N,N-diphenylamino electron-donating group, and a 1,1′-dicyanovinyl substituted electron-accepting group. We have also developed a facile and generally applicable method to functionalize NLO chromophores onto high temperature polymers to demonstrate both high electro-optic (E-O) coefficients and long-term alignment stability at 100 °C.