Synthesis of a non-cationic, water-soluble perylenetetracarboxylic diimide and its interactions with G-quadruplex-forming DNA
作者:Ramakrishna Samudrala、Xu Zhang、Randy M. Wadkins、Daniell Lewis Mattern
DOI:10.1016/j.bmc.2006.09.075
日期:2007.1.1
effectively to DNA that adopts G-quadruplex motifs. In some cases, this binding may actively drive the transition from single-strand DNA to the quadruplex form. The perylenediimides in the reported cases all have amine-containing side chains, which are thought to interact with the grooves of the quadruplex and help dictate the selectivity of these compounds for quadruplex versus duplexDNA. We synthesized
The cellular uptake ofMPFCP-2is improved by the PEG encapsulation method, and thenMPFCP-2could pass through the cell membrane by itself, and monitor the changes of the intracellular Ca2+signal.
acid activated fluorescent probes based on amphiphilic perylenebisimide with morpholine groups on the bay (Lyso-APBI). Incorporating one morpholine group, Lyso-APBI-1 showed an acid activated fluorescence increase of 70-fold upon pH values lowering from 8.0 to 4.0. Lyso-APBI-2, with two morpholine groups on the bay of PBI, had a red-shifted emission and a 190-fold fluorescence enhancement within same
unsymmetrically substituted. We avoided substitution at bay positions of the perylene core to maintain the planarity and strong pi-pi interactions, which favor intermolecular order and charge carrier transport. The thermotropic behavior, which is strongly influenced by the nature of the substituents was investigated using differential scanning calorimetry (DSC), polarization optical microscopy (POM), and X-ray
Fluorescent water-soluble probes based on dendritic PEG substituted perylene bisimides: synthesis, photophysical properties, and live cell images
作者:Hongmei Liu、Yongli Wang、Chenghui Liu、Hongxia Li、Baoxiang Gao、Licui Zhang、Fuli Bo、Qianqian Bai、Xinwu Ba
DOI:10.1039/c2jm30168g
日期:——
Water-soluble dyes based on dendritic polyethylene glycol (PEG)-substituted perylene bisimides were designed and synthesised. According to the distribution of hydrophilic dendritic PEGs, these dyes can be divided into two classes: (I) head–tail structured dyes, in which the hydrophobic perylene bisimides are the heads of the dyes and the hydrophilic dendritic PEG are used as the tails; (II) core–shell structured dyes, in which the hydrophobic perylene bisimides are encapsulated by the hydrophilic dendritic PEG. The aggregation behaviour and optical properties of these dyes were investigated. The two classes of water-soluble perylene bisimides show similar aggregation behaviour, optical and cytocompatibility properties. With increased dendron PEG generation, the aggregation of the PBI in an aqueous solution is completely suppressed by the hydrophilic bulky dendritic PEG groups, and the fluorescence quantum yield increases from 4% to 93%. These dendritic PEG-substituted perylene bisimides have good cytocompatibility. The head–tail structured dyes show a limited cellular uptake process. By contrast, the core–shell structured dyes are efficiently internalised by cells and accumulated in the cytoplasm.