Tri(bipheny1-4-yl)amine is found to constitute a new class of photo-and electro-active amorphous molecular materials. The material readily forms an amorphous glass with a glass-transition temperature of 76 "C, as characterized by differential scanning calorimetry, X-ray diffraction and Rarnan spectroscopy. Its glass-forming properties are discussed in the light of its molecular and crystal structures determined by X-ray crystallography. The material in the glassy state shows a relatively high hole drift mobility of 1.5 x cm2 V-' s-' at an electric field of 2 x lo5 V crn-' at 20 "C.Temperature and electric-field dependencies of the hole drift mobility in the glassy state of TBA are discussed.

Starburst precursor molecules based on n-electron systems, tri(bipheny1-4-yl)amine and tri(p-terphenyl-4yl)amine, are found to constitute a new class of amorphous molecular materials with relatively high glasstransition temperatures of 76 and 132 "C, respectively.

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Entangled states of two ions are realized by using an adiabatic process. Based on the proposal by Linington and Vitanov, we have generated Dicke states in optical qubits of two $^{40}$Ca$^+$ ions by applying frequency-chirped optical pulses with time-dependent envelopes to perform rapid adiabatic passage on sideband transitions. One of the biggest advantages of adiabatic approaches is their robustness against variations in experimental parameters, which is verified by performing experiments for different pulse widths or peak Rabi frequencies. Fidelities exceeding 0.5, which is the threshold for inseparable states, are obtained over wide ranges of parameter values

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