894094-41-8Relevant articles and documents
A systematic study of peripherally multiple aromatic ester-functionalized poly(benzyl ether) dendrons for the fabrication of organogels: Structure-property relationships and thixotropic property
Feng, Yu,Liu, Zhi-Xiong,Chen, Hui,Yan, Zhi-Chao,He, Yan-Mei,Liu, Chen-Yang,Fan, Qing-Hua
, p. 7069 - 7082 (2014/06/09)
A new class of peripherally multiple aromatic ester-functionalized poly(benzyl ether) dendrons and/or dendrimers with different focal point substituents, surface groups, interior structures, as well as different generations have been synthesized and their structure-property relationships with respect to their gelation ability have been investigated systematically. Most of these dendrons are able to gel organic solvents over a wide polarity range. Evident dendritic effects were observed not only in gelation capability but also in thermotropic, morphological, and rheological characterizations. It was disclosed that subtle changes in peripheral ester functionalities and interior dendritic structures affected the gelation behavior of the dendrons significantly. Among all the dendrons studied, the second- and third-generation dendrons G0G2-Me and G0G3-Me with dimethyl isophthalates (DMIP) as peripheral groups exhibited the best capability in gelation, and stable gels were formed in more than 22 aromatic and polar organic solvents. The lowest critical gelation concentration (CGC) reached 2.0 mg mL-1, indicating that approximately 1.35×104 solvent molecules could be entrapped by one dendritic molecule. Further study on driving forces in gel formation was carried out by using a combination of single-crystal/powder X-ray diffraction (XRD) analysis and concentration- dependent (CD)/temperature-dependent (TD) 1H NMR spectroscopy. The results obtained from these experiments revealed that the multiple π-π stacking of extended π-systems due to the peripheral DMIP rings, cooperatively assisted by non-conventional hydrogen-bonding, is the key contributor in the formation of the highly ordered supramolecular and fibrillar network. In addition, these dendritic organogels exhibited unexpected thixotropic-responsive properties, which make them promising candidates with potential applications in the field of intelligent soft materials. s
Peripherally dimethyl isophthalate-functionalized poly(benzyl ether) dendrons: A new kind of unprecedented highly efficient organogelators
Feng, Yu,Liu, Zi-Tong,Liu, Ji,He, Yan-Mei,Zheng, Qi-Yu,Fan, Qing-Hua
supporting information; experimental part, p. 7950 - 7951 (2009/12/02)
(Figure Presented) A series of poly(benzyl ether) dendrons, up to the fourth generation, decorated in their periphery with dimethyl esters were divergently synthesized and fully characterized. These dendrons were found to be unprecedented highly efficient
Synthesis of new photoresponsive stilbene dendrons and dendrimers
Rajakumar, Perumal,Dhanasekaran, Manickam,Selvam, Subramaniyan
, p. 1257 - 1262 (2007/10/03)
A new convergent synthetic route for the synthesis of functionalized photoactive dendrimers having bis-stilbenoid skeletons on planar and tetrahedral cores, endowed with methoxy/methyl group has been developed. Optical spectroscopic techniques have been u