Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 125, Issue 37, Pages 11249-11252Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja034868b
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Bis-thymine units were used to noncovalently cross-link a complementary diamidopyridine-functionalized copolymer. Upon combination in noncompetitive solvents, discrete micron-scale spherical aggregates were formed arising from specific three-point polymer-cross-linker hydrogen bonding interactions. The diameter of these microspheres could be controlled through spacer structure. The cross-linking process was fully thermally reversible, with complete dissolution observed at 50 degreesC and reformation of the aggregates upon return to ambient temperature. This process could be repeated multiply, with lower particle dispersity observed arising from the annealing process.
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