SILICON-BASED LIGHT-EMITTING GELS

Light emitting propel-ties of a silicon-containing gel formed by the c ontrolled reaction between acetone and tetrachlorosilane is reported h ere. Although infrared spectroscopic analysis shows that the gel has a siloxane network (1000-1100 cm(-1)), UV absorption with a maximum of 328 nm suggests that it is not a simple siloxane polymer. A photolumin escence (PL) spectrum of the compound gives a broad peak in the range of 800-950 nm, attributed to the structural features associated with c arbonyl conjugated siloxane groups. (C) 1996 American Institute of Phy sics.