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Self-assembled Structures and Structural Transition of Dimethyl Isophthalate-Functionalized Janus Dendrimers on HOPG Investigated with STM
Zhang Xu1,2; Feng Yu1,2; Fan Qing-Hua1; Wan Li-Jun1
2009-12-10
Source PublicationCHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN0251-0790
Volume30Issue:12Pages:2424-2428
AbstractSelf-assembled structures of three dimethyl isophthalate-functionalized Janus dendrimers G(1)G(2)COOCH(3), G(0)G(3)COOCH(3), and G(1)G(3)COOCH(3) were investigated with scanning tunneling microscopy (STM) on HOPG. It was found that G(1)G(2)COOCH(3), G(0)G(3)COOCH(3), G(1)G(3)COOCH(3) assembled into ordered, partial ordered, and disordered structures, respectively. After heated to 60-80 degrees C, regular dendrimer dimers, could be found on HOPG, resulting in close-packed ordered structures instead of the previous disordered structures. The results show that with the increase of the molecule generation, molecules are bound down onto surface due to the enhanced intermolecular and molecule-substrate interactions. The self-assembly is dependent on the dynamic process, leading to disordered structures. However, when heated, the mobility of dendrimer molecules on surface could be improved. Structural transformation from disordered structures to thermodynamically stable dimeric structures could be observed by STM on G(0)G(3)COOCH(3) and G(1)G(3)COOCH(3) adlayers.
KeywordJanus Dendrimer Self-assembly Structural Transition Scanning Tunneling Microscopy(Stm)
Indexed BySCI
Language英语
WOS IDWOS:000273792900020
PublisherHIGHER EDUCATION PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67622
Collection中国科学院化学研究所
Corresponding AuthorFan Qing-Hua
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang Xu,Feng Yu,Fan Qing-Hua,et al. Self-assembled Structures and Structural Transition of Dimethyl Isophthalate-Functionalized Janus Dendrimers on HOPG Investigated with STM[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2009,30(12):2424-2428.
APA Zhang Xu,Feng Yu,Fan Qing-Hua,&Wan Li-Jun.(2009).Self-assembled Structures and Structural Transition of Dimethyl Isophthalate-Functionalized Janus Dendrimers on HOPG Investigated with STM.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,30(12),2424-2428.
MLA Zhang Xu,et al."Self-assembled Structures and Structural Transition of Dimethyl Isophthalate-Functionalized Janus Dendrimers on HOPG Investigated with STM".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 30.12(2009):2424-2428.
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