A series of linear and V-shaped oligo(phenylene ethynylene) derivatives 1-3 were synthesized through sequent Sonogashira coupling and propargyl alcohol deprotection reaction in high yields.The alkoxy chains(i.e.,n-hex...A series of linear and V-shaped oligo(phenylene ethynylene) derivatives 1-3 were synthesized through sequent Sonogashira coupling and propargyl alcohol deprotection reaction in high yields.The alkoxy chains(i.e.,n-hexyloxy groups) were introduced to assure good solubility of compounds 1-3 in common solvents.The photophysical properties of 1-3 in solution depend strongly on the geometries of these compounds.展开更多
Using diamine as anchoring group, the self-assembled monolayers（SAMs） based on oligo（phenyleneethynylene）s（OPEs） and cruciform OPEs with an extended tetrathiafulvalene（TTF）（OPE3 and OPE3-TTF）were successfull...Using diamine as anchoring group, the self-assembled monolayers（SAMs） based on oligo（phenyleneethynylene）s（OPEs） and cruciform OPEs with an extended tetrathiafulvalene（TTF）（OPE3 and OPE3-TTF）were successfully formed on the Au substrate. The Uniformity and stability of SAMs were confirmed through cyclic voltammetry（CV） and electrochemical reductive desorption. The investigation of transport properties of SAMs was achieved by conducting-probe atomic force microscopy（CP-AFM） with both Au and Pt tips. The results indicated that the conductance of OPE3-TTF was 17 and 46 times that of OPE3 for Au and Pt tips, respectively. Theoretical calculations are qualitatively consistent with the experimental results, suggesting that the diamine as anchoring group has a great potential in molecular electronics.展开更多
基金Beijing Natural Science Foundation(No.2093033)Scientific Research Project of Beijing Educational Committee(No.KM200910020012) for financial support.
文摘A series of linear and V-shaped oligo(phenylene ethynylene) derivatives 1-3 were synthesized through sequent Sonogashira coupling and propargyl alcohol deprotection reaction in high yields.The alkoxy chains(i.e.,n-hexyloxy groups) were introduced to assure good solubility of compounds 1-3 in common solvents.The photophysical properties of 1-3 in solution depend strongly on the geometries of these compounds.
基金financially supported by the National Natural Science Foundation of China (Nos. 61571415, 61622406, 51502283)the National Key Research and Development Program of China (Nos. 2017YFA0207500, 2016YFB0700700)the "Hundred Talents Program" of Chinese Academy of Sciences (CAS)
文摘Using diamine as anchoring group, the self-assembled monolayers（SAMs） based on oligo（phenyleneethynylene）s（OPEs） and cruciform OPEs with an extended tetrathiafulvalene（TTF）（OPE3 and OPE3-TTF）were successfully formed on the Au substrate. The Uniformity and stability of SAMs were confirmed through cyclic voltammetry（CV） and electrochemical reductive desorption. The investigation of transport properties of SAMs was achieved by conducting-probe atomic force microscopy（CP-AFM） with both Au and Pt tips. The results indicated that the conductance of OPE3-TTF was 17 and 46 times that of OPE3 for Au and Pt tips, respectively. Theoretical calculations are qualitatively consistent with the experimental results, suggesting that the diamine as anchoring group has a great potential in molecular electronics.
