The invention provides luminescent solid-state compositions comprising difluoroboron beta-diketonates wherein the compositions can exhibit mechanochromic luminescence. The mechanochromic effect on the luminescence can be reversible, such as thermally reversible. Various solid-state forms of the invention can have emission spectra that differ from the properties of the respective difluoroboron beta-diketonate in solution. The mechanochromic effect can be stimulated by pressure such as hand-writing, and can be reversed over a period of minutes to hours at room temperature. The invention also provides methods of making and methods of using the solid-state compositions, such as for sensors and for information displays for use in biological sensing, and in art, design, and consumer products. Compositions of the invention, such as compositions in nanoparticulate form, or contained within a matrix material, can be used in conjunction with fluorescence microscopy to provide information concerning pressures and tensions within and external to living cells, tissues, or organisms.
本发明提供了包含二
氟硼酮基二
酮酸盐的发光固态组合物,其中该组合物可以表现出机械致发光性。该发光的机械致变色效应可以是可逆的,例如热可逆的。本发明的各种固态形式可以具有与相应的二
氟硼酮基二
酮酸盐在溶液中的性质不同的发射光谱。该机械致变色效应可以通过压力(如手写)刺激,并可以在室温下在几分钟到几小时内被逆转。本发明还提供了制备和使用固态组合物的方法,例如用于
生物传感、艺术、设计和消费品的信息显示和传感器。本发明的组合物,例如纳米粒子形式的组合物或包含在基质材料中的组合物,可以与荧光显微镜一起使用,以提供有关细胞、组织或
生物体内外压力和张力的信息。