Macromolecular Self-Assembly of Diketopiperazine Tetrapeptides
摘要:
Basic solutions of tetrapeptides derived from L-aspartic acid diketopiperazines are shown to form microcapsules when acidified to pH 2.4. An initial structure-activity study clearly demonstrates that a very delicate balance exists between the tetrapeptides' structure and their ability to self-assemble. Scanning electron micrographs confirm that microcapsules and not solid microspheres are formed.
Macromolecular Self-Assembly of Diketopiperazine Tetrapeptides
摘要:
Basic solutions of tetrapeptides derived from L-aspartic acid diketopiperazines are shown to form microcapsules when acidified to pH 2.4. An initial structure-activity study clearly demonstrates that a very delicate balance exists between the tetrapeptides' structure and their ability to self-assemble. Scanning electron micrographs confirm that microcapsules and not solid microspheres are formed.
Template-assisted photodimerization of N-unprotected uracil derivatives: selective formation of the cis–syn photodimer
作者:N. M. Weckenmann、C. Maichle-Mössmer、B. J. Nachtsheim
DOI:10.1039/c7cc05353c
日期:——
was investigated. Dual salt bridge formation between the imidazole side chains and the carboxylic acids resulted in preorganization of the uracil monomers and preferential formation of the cis-syn photodimer.