The morphologies of monolayers containing Eu(TTA)3Phen (TTA=thenoyltrifluoroace-tone, Phen = 1, 10-phenanthroline) were studied at the air/liquid interface on different subphases by fluorescence microscopy (FM). The c...The morphologies of monolayers containing Eu(TTA)3Phen (TTA=thenoyltrifluoroace-tone, Phen = 1, 10-phenanthroline) were studied at the air/liquid interface on different subphases by fluorescence microscopy (FM). The composite subphase was the basic premise for the stable existence of the rare earth compound at air/liquid interface. The process that rare earth compound phase changes from liquid expanded state to liquid condensed state corresponded to a plateau in the π-A isotherm. In the pure Eu(TTA)3Phen monolayer, rod domains of Eu(TTA)3Phen formed and packed with no order. In the mixed monolayers with stearic acid (SA), phase transition of SA occurred first and formed domains with an electric gradient field, which induced the rare earth compound to form luminescent ring domains. Influence of intermolecular interaction on the self-organized microstructure was revealed.展开更多
Understanding the structure-performance relationship is crucial for optimizing the performance of organic thin film transistors. Here, two interface modification methods wereapplied to modulate the thin film morpholog...Understanding the structure-performance relationship is crucial for optimizing the performance of organic thin film transistors. Here, two interface modification methods wereapplied to modulate the thin film morphology of the organic semiconductor, 6,13-bis（triisopropylsilylethynyl）pentacene（TIPS-pentacene）. The resulting different film morphologies and packing structures led to distinct charge transport abilities. A substantial 40-fold increase in charge carrier mobility was observed on the octadecyltrichlorosilane（OTS）-modified sample compared to that of the transistor on the bare substrate. A better charge mobility greater than 1 cm^2· V^-1· s^-1 is realized on the p-sexiphenyl（p-6P）- modified transistors due to the large grain size, good continuity and, importantly, the intimate π-π packing in each domain.展开更多
基金the Award Foundation for Excellent Young Scientists in Shandong Province and the Climbing Program.
文摘The morphologies of monolayers containing Eu(TTA)3Phen (TTA=thenoyltrifluoroace-tone, Phen = 1, 10-phenanthroline) were studied at the air/liquid interface on different subphases by fluorescence microscopy (FM). The composite subphase was the basic premise for the stable existence of the rare earth compound at air/liquid interface. The process that rare earth compound phase changes from liquid expanded state to liquid condensed state corresponded to a plateau in the π-A isotherm. In the pure Eu(TTA)3Phen monolayer, rod domains of Eu(TTA)3Phen formed and packed with no order. In the mixed monolayers with stearic acid (SA), phase transition of SA occurred first and formed domains with an electric gradient field, which induced the rare earth compound to form luminescent ring domains. Influence of intermolecular interaction on the self-organized microstructure was revealed.
基金Supported by the National Natural Science Foundation of China（Nos. 11304213, 51503138, 21527805）, and the China Postdoctoral Science Foundation（Nos.2014M550304, 2015M581856, 2015T80579）.
文摘Understanding the structure-performance relationship is crucial for optimizing the performance of organic thin film transistors. Here, two interface modification methods wereapplied to modulate the thin film morphology of the organic semiconductor, 6,13-bis（triisopropylsilylethynyl）pentacene（TIPS-pentacene）. The resulting different film morphologies and packing structures led to distinct charge transport abilities. A substantial 40-fold increase in charge carrier mobility was observed on the octadecyltrichlorosilane（OTS）-modified sample compared to that of the transistor on the bare substrate. A better charge mobility greater than 1 cm^2· V^-1· s^-1 is realized on the p-sexiphenyl（p-6P）- modified transistors due to the large grain size, good continuity and, importantly, the intimate π-π packing in each domain.
