Functional properties of fluorescent poly(amidoamine) dendrimers in nematic liquid crystalline media

The effectiveness of poly(amidoamine) dendrimers from zero generation as a fluorescent guest for liquid crystal displays of the ‘guest–host’ type is discussed on the basis of their absorption and fluorescent properties. It has been shown that the dendrimers at concentration of 0.3 wt% do not destabilize the orientation of the liquid crystal matrix. The orientation order parameters SA and SF depends on the nature of the substituent at C-4 position of the 1,8-naphthalimide. The effect that poly(amidoamine) dendrimers have upon the phase transition temperature and the electro-optical properties of the LC/dendrimer mixtures has been also presented. All investigations reported have been carried out in surface stabilized display cells.