Mechanistic Study of the Anchoring Behavior of Liquid Crystals Supported on Metal Salts and Their Orientational Responses to Dimethyl Methylphosphonate

摘要: This paper reports an investigation of the orientational behavior films nematic liquid crystal (LC) 4‘-pentyl-4-biphenyl-carbonitrile (5CB) supported on a variety metal perchlorate salts and their response to dimethyl methylphosphonate (DMMP). It is found that 5CB comprised ions with high electron affinities (>15.64 eV), such as Cu2+, Zn2+, Cd2+, Ni2+, Co2+, La3+, Al3+, Eu3+, Fe3+, assumes homeotropic orientation whereas low affinities, including Mn2+, Mg2+, Ag+, Cs+, Na+, planar or tilted orientation. The role nitrile group in determining LC via its coordination by polarization-modulation infrared reflection−absorption spectroscopy (PM-IRRAS). A new stretching peak measured Cd2+ (which cause anchoring) but not Mg2+ til...