In various embodiments, the present invention provides an organoboronate nanoparticle. An image for the left and the right eye are displayed on the screen 50 of an electronic device 2 alternately, an observer wears spectacles 4 which open and close in synchronism with the display of these images to produce a convergence angle and parallax to obtain a 3-D image. In the preferred embodiments, the locking members are radial pins and the locking member interfaces are bayonet joints.