Functional supramolecular gels based on poly(benzyl ether) dendrons and dendrimers

Abstract

Supramolecular gels, as a fascinating and useful class of soft materials, constructed from low-molecular-weight gelators via noncovalent interactions have attracted increasing attention in the past decades. Dendrimers and dendrons are...

Review of photoresponsive and glycoside dendrimers in biomaterials and sensors applications

“…The SEM studies suggest that Fig. 9 (a) Absorption and photoluminescence (PL) spectra of pyrene core-dendrimer (10). (b) Fluorescence behavior of pyrene-amine-containing dendrimer (11).…”

“…8b). 49 A dendrimer (10) with pyrene as the core and 9-phenylcarbazole (PCZ) on the outside is demonstrated to be a multipurpose uorescent probe for iodide, iron(III), and mercury(II). It functions as the dual-channel uorometric and colorimetric probe for these ions.…”

“…A mimic of the photosynthetic light-harvesting system, in which antenna chromophores surround the inner reaction centre, is provided by such dendrimeric structures with integrated chromophores. 9,10 Because of the near spatial closeness to neighbouring moieties, each photoactive group inside a dendrimer might have substantially different emission and energy-transfer properties compared to those of the same chromophore within small molecules. 11…”

“…A mimic of the photosynthetic lightharvesting system, in which antenna chromophores surround the inner reaction centre, is provided by such dendrimeric structures with integrated chromophores. 9,10 Because of the near spatial closeness to neighbouring moieties, each photoactive group inside a dendrimer might have substantially different emission and energy-transfer properties compared to those of the same chromophore within small molecules. 11 For instance, in properly designed dendrimers, photoexcited chromophores can transfer energy to other units, directing the energy through the antenna framework toward the core, which can be the basis for solar energy conversion, luminescent sensors, and photoinduced electron transfer (PET) between the dendrimer units.…”

Progress in Stimulus-Responsive Dendritic Gels※

“…树状分子众多枝化单元提供的 多重弱相互作用力有利于形成稳定的高力学强度凝胶 体系, 即使后续对其进行功能化修饰依然可以维持稳定 的凝胶形态. 树状分子凝胶作为一种特殊的超分子凝 胶, 兼具有机小分子凝胶和聚合物凝胶的双重优点, 逐 渐引起了人们极大的研究兴趣和广泛关注 [22][23][24][25] . 1986 年, Newkome 等 [26] 报道了首例基于"哑铃型"树状分子 1 (Bola-amphiphiles)的水凝胶体系, 随后 2000 年, Aida 等 [27] 报道了第一例基于核心修饰有二肽的 Fréchet 型聚 苄醚树状分子 2 的有机凝胶体系(图 1), 自此揭开了树状 分子凝胶的研究序幕, 近年来一系列成凝胶性能优异的 树状分子凝胶因子被陆续报道出来.…”