Systematic Study of Odd-Even Effect in Molecular Alignments of Cyanobiphenyl Liquid Crystals with Scanning Tunneling Microscope.I.Experimental Observation

概要

論文の詳細を見る
Systetnatic observations are c?rr'ried otrt ['or taaolectrlar alignrnents of' rnonolayers of' homologousseries itu cyanobiphenyle (CB) liquid crystals strcla as 6CB to l2CB on l?iglaly oriented pyrolyticgrapluite (HOPG) stmbstr?ttes trsirug a scannitug ttrnneling naicroscope. For 6CB the l110l6CLll21I'alignraaents are also observed on znolybdentrtaa disttlfide str1.cstrates (llvIoS3) as xx'ell as HOPG. Itt6CB tnonola.5xers, the chatracteristic strtuctttres iradicating lcotlu properties of' a single stud dotrlvleroxv previously reported stre observed. In 7CB, 9CB anad IICB taaonolayers only tlae sir?gle IOXVproperty is observed. The raaonol?ryer alignumernts of'8CB, IOCB atnd l2CB shoxv 011 the other la?tnddouble row charatcteristics. Thtrs 2111 the olcser'xved aspects clearly indicate the odd-even efl'ect of'carbon numbers in an alkyl ch?tin. Tlae naaorplnology of taaolectrlar atligtaraaents dtre to t1?e odd-eveneffect in raaonolayers of' cy;tnobiplaenyl liqtrid cr'yststls on HOPG are systetaaatically deterraairaed.Based on the experinaental obserx'axtiota a qtralitatixze taaodel on tlte raaolectrlar alignrnents of' CBliqtrid crysts'tls is proposed.
社団法人日本物理学会の論文
1999-04-15