title: N-Boc-protected 1,2-diphenylethylenediamine-based dendritic organogels with multiple-stimulus-responsive properties.
abstract: A new class of poly(benzyl ether) dendrimers, decorated in their cores with N-Boc-protected 1,2-diphenylethylenediamine groups, were synthesized and fully characterized. It was found that the gelation capability of these dendrimers was highly dependent on dendrimer generation, and the second-generation dendrimer (R,R)-G(2)DPENBoc proved to be a highly efficient organogelator. A number of experiments (SEM, TEM, FTIR spectroscopy, (1)H NMR spectroscopy, rheological measurements, UV/Vis absorption spectroscopy, CD, and XRD) revealed that these dendritic molecules self-assembled into elastically interpenetrating one-dimensional nanostructures in organogels. The hydrogen bonding, π-π, and solvophobic interactions were found to be the main driving forces for formation of the gels. Most interestingly, these dendritic organogels exhibited smart multiple-stimulus-responsive behavior upon exposure to environmental stimuli such as temperature, anions, and mechanical stress.
authors: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry and Graduate School, Chinese Academy of Sciences, Beijing 100190, P. R. China.
authors: Ji
authors: J
authors: Liu
authors: Yu
authors: Y
authors: Feng
authors: Zhi-Xiong
authors: ZX
authors: Liu
authors: Zhi-Chao
authors: ZC
authors: Yan
authors: Yan-Mei
authors: YM
authors: He
authors: Chen-Yang
authors: CY
authors: Liu
authors: Qing-Hua
authors: QH
authors: Fan