Glucose-sensitivity of core-shell microspheres and their crystalline colloidal arrays

Synthesis and Applications of Boronic Acid-Containing Polymers: From Materials to Medicine

“…Colorimetric sensors can be prepared from polymerized crystalline colloidal arrays (PCCA), which consist of colloidal particles packed in a “crystalline” order, similar to that present on the atomic scale. − Because the colloidal crystal order is on the size scale of the wavelength of light, crystalline colloidal arrays can diffract light in accordance with Bragg’s law. By varying the distance between colloidal particles, either constructive or destructive interference of electromagnetic waves can cause iridescence.…”

“…Polymerized crystalline colloidal arrays were prepared by dispersing boronic acid-modified cross-linked particles in cross-linked hydrogels. − In an initial study, 3-APBA-modified polystyrene particles were imbedded in a polyacrylamide matrix. The resulting materials exhibited a red shift in the diffraction wavelength with increasing saccharide concentration as a result of electrostatic repulsion between the boronic acid particles upon boronate ester formation .…”

The biological effects and environmental application of fluorescent carbon dots

“…随着技术的不断进步, 利用纳米生物传感器检 测糖类 [28,29] 、蛋白质、DNA [30,31] 、活性因子等生物分 子的方法不断被报道. 与这些纳米材料相比, 碳点所 具有独特荧光和电子传递性能, 以及制备简单、生物 相容性好、灵敏度高、背景干扰小、成本低廉等特 点 [32] , 可用于检测生物体内各种生化物质成分的变 化过程.…”

A Covalently Imprinted Photonic Crystal for Glucose Sensing

“…Real-time continuous glucose monitoring (RT-CGM) is crucial for diabetic care, which can lead to better treatment decisions, improve metabolic control, and decrease the incidence and progression of diabetic complications [1][2][3][4][5][6]. For this reason, many different analytical methods for RT-CGM have been developed, which are mainly electrochemical [7][8][9] and optical [3,10,11]. Photonic crystals are highly ordered materials with periods on the scale of visible light and exhibit unique structural color on the basis of Bragg diffraction and lattice spacing.…”

“…They incorporated a crystalline colloidal array (CCA) into a polyacrylamide [13] or poly(vinyl alcohol) [14] hydrogel with pendent boronic acid groups, and the polymerized crystalline colloidal array (PCCA) diffraction wavelength was dependent on the hydrogel volume [15]. Bazin and Zhu prepared core-shell microspheres and assembled them into a crystalline colloidal array (CCA) [3]. The core-shell microspheres were functionalized with 3-aminophenylboronic acid to make them responsive to glucose.…”