申请人:The Regents of the University of California
公开号:US06682938B1
公开(公告)日:2004-01-27
An analyte sensing fluorescent molecule that employs intramolecular electron transfer is designed to exhibit selected fluorescent properties in the presence of analytes such as saccharides. The selected fluorescent properties include excitation wavelength, emission wavelength, fluorescence lifetime, quantum yield, photostability, solubility, and temperature or pH sensitivity. The compound comprises an aryl or a substituted phenyl boronic acid that acts as a substrate recognition component, a fluorescence switch component, and a fluorophore. The fluorophore and switch component are selected such that the value of the free energy for electron transfer is less than about 3.0 kcal mol−1. Fluorescent compounds are described that are excited at wavelengths greater than 400 nm and emit at wavelengths greater than 450 nm, which is advantageous for optical transmission through skin. The fluorophore is typically selected from transition metal-ligand complexes and thiazine, oxazine, oxazone, or oxazine-one as well as anthracene compounds. The fluorescent compound can be immobilized in a glucose permeable biocompatible polymer matrix that is implantable below the skin.
设计了一种利用分子内电子转移的分析物感测荧光分子,可在存在诸如糖类的分析物时展现选定的荧光特性。选定的荧光特性包括激发波长、发射波长、荧光寿命、量子产率、光稳定性、溶解度以及温度或pH敏感性。该化合物包括作为底物识别组分、荧光开关组分和荧光团的芳基或取代苯基硼酸。荧光团和开关组分被选为自由能量值小于约3.0 kcal mol-1的化合物。描述了在大于400 nm波长激发并在大于450 nm波长发射的荧光化合物,这对于通过皮肤进行光学传输是有利的。荧光团通常选自过渡金属配合物和噻吩、噁吩、噁唑或噁唑-1以及蒽类化合物。荧光化合物可以固定在葡萄糖渗透生物相容性聚合物基质中,该基质可以植入皮肤下。