North Carolina State University

Joydev K Laha

Jonathan S Lindsey

Masahiko Taniguchi

K Eszter Borbas

Muthiah Chinnasamy

Savithri Dhanalekshmi

The present invention provides compounds of the general Formula DI: along with methods of making such compounds, formulations containing the same, and methods of using the same (e.g., in photodynamic therapy, for the production of solar cells, etc.). 

Synthesis of chlorins and phorbines with enhanced red spectral features

A (preferably nonaqueous) method of making a dipyrromethane is described. The comprises the steps of: (a) providing a reaction system consisting essentially of an aldehyde or acetal, excess pyrrole and a catalyst; (b) reacting the aldehyde or acetal with the pyrrole in the reaction system to form the dipyrromethane therein; (c) quenching the reaction system by adding a base thereto (preferably without simultaneously or concurrently adding water and/or an organic solvent thereto); (d) separating the catalyst from the reaction system; and then (e) separating the pyrrole from the reaction system to produce the dipyrromethane as a residual

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Charlestown, MA, United States of America

Joydev K Laha