Reversible pH-responsive helical nanoribbons formed using camptothecin†
Abstract
The natural antitumor drug camptothecin was found to self-assemble into helical nanoribbons in aqueous solution. The helical nanoribbons showed good reversible pH-responsiveness. The formation and disappearance of the helical nanoribbons can be tuned reversibly through changing the pH value of the solution.