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Protein Biophosphors: Biodegradable, Multifunctional, Protein-Based Hydrogel for White Emission, Sensing, and pH Detection

机译:蛋白质生物荧光剂:可生物降解的多功能蛋白质基水凝胶,用于白光发射,传感和pH检测

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摘要

A highly efficient, multifunctional, bioderived white-emitting hydrogel (biophosphor) consisting of crosslinked bovine serum albumin and three fluorescent dyes, Coumarin 460, fluorescein, and 5(6)-carboxy-x-rhodamine, is reported here. White emission is obtained upon excitation of the biophosphor at 365 nm with appropriate mole ratios of the above dyes. The CIE 1931 chromaticity coordinates of white emission with 365 nm excitation are (0.36, 0.37), and the correlated color temperature is 5300 K. Multifunctional nature of the biophosphor is also demonstrated. A UV-light-emitting-diode (361 nm) coated with this biophosphor, for example, indicates white emission (CIE 0.28, 0.31) with a half-life of 106 (+/- 5) h. The white emission is also highly sensitive to pH over a broad range (pH 1-11). Incorporation of glucose oxidase and peroxidase in the biophosphor allows for the detection of glucose over a physiologically relevant range of 1.8-288 mg dL(-1). This is a unique, advanced biophosphor with LED and sensing applications, and it is the first example of a multifunctional, proteinaceous white emitter.
机译:此处报道了一种高效的,多功能的,生物来源的发白光的水凝胶(生物磷),该水凝胶由交联的牛血清白蛋白和三种荧光染料香豆素460,荧光素和5(6)-羧基-x-罗丹明组成。通过以合适的上述染料的摩尔比在365nm激发生物磷光体,获得白色发射。 365 nm激发下白色发射的CIE 1931色度坐标为(0.36,0.37),相关色温为5300K。还证明了生物磷光体的多功能性。例如,涂有该生物磷光体的紫外线发光二极管(361 nm)指示白色发射(CIE 0.28,0.31),半衰期为106(+/- 5)h。白光发射对宽范围(pH 1-11)中的pH也高度敏感。在生物磷中掺入葡萄糖氧化酶和过氧化物酶可以在生理相关的1.8-288 mg dL(-1)范围内检测葡萄糖。这是具有LED和传感应用的独特,先进的生物磷光体,并且是多功能蛋白质性白色发射体的第一个示例。

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