Patent ID: 7514399

Claim:
A compound having the formula: D-B wherein: D is a 4-amino naphthalimide molecule and D has the structure: which is a mixture of stereoisomers, wherein: n is an integer between 1 and 20, R is selected from the group consisting of CH 3 , C 4 H 9 , C 6 H 13 , (CH 2 ) 2 N(CH 3 ) 3 +, CH 2 COOH, (CH) 2 CH 2 (CH 3 ) 2 COOH, and (CH) 2 CH 2 (CH 3 ) 2 COOCH 3 , and R* is a bond between D and B; and B is chitosan, protein, hydrolyzed protein, or carbohydrate.