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Competition of Major Forces Dominating the Structures of Porphyrin Assembly
Ma, Juqing1,2; Zhang, Wenlong1; Li, Zhan2; Lin, Qiang2; Xu, Ji2; Han, Yongsheng2
2016-04-01
Source PublicationCRYSTAL GROWTH & DESIGN
ISSN1528-7483
Volume16Issue:4Pages:1942-1947
AbstractHere we take the self-assembly of porphyrin molecules as an example to discover the reason for the diversity of assembled structures. The self-assembly is conducted at a range of pH conditions. Irregular, tubular, and rodlike particles are formed at pH 1.5, 6.5 and 12.5, respectively. X-ray diffraction spectra and UV absorption show that these particles have the same crystalline structures, while the packing types of molecules are different. At low pH, the molecules assemble together by end to end attachment with a J-type aggregation, forming irregular particles. This assembly is dominated by the competition of pi-pi interaction and repulsion force. The latter force is induced by the protonation of molecules under acid conditions. With the increase of pH, the repulsion force is attenuated and finally disappears under basic conditions. The pi-pi interaction becomes the major force under basic conditions, leading to a H-type aggregation via face to face attachment and forming rodlike particles. At the middle pH, the competition disturbs the symmetry of molecules assembly, forming tubular particles. Together with previous studies, we expect that the compromise between competing interactions is probably the governing rule for the diversity of assembled structures.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1021/acs.cgd.5b01502
Indexed BySCI
Language英语
WOS KeywordLINEAR CONSTRAINT SOLVER ; PARTICLE MESH EWALD ; MOLECULAR SIMULATION ; LIMITED AGGREGATION ; DIFFUSION ; SUBSTITUENT ; COMPROMISE ; DYNAMICS ; NANORODS ; SPECTRA
WOS Research AreaChemistry ; Crystallography ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Crystallography ; Materials Science, Multidisciplinary
Funding OrganizationChinese Academy of Sciences ; State Key Laboratory of Multiphase Complex Systems(MPCS-2014-D-05) ; National Natural Science Foundation of China(U1462130 ; 91534123 ; 21406232)
WOS IDWOS:000373747700021
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20986
Collection多相复杂系统国家重点实验室
Affiliation1.Harbin Univ Sci & Technol, Sch Mat Sci & Engn, Harbin 150080, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Ma, Juqing,Zhang, Wenlong,Li, Zhan,et al. Competition of Major Forces Dominating the Structures of Porphyrin Assembly[J]. CRYSTAL GROWTH & DESIGN,2016,16(4):1942-1947.
APA Ma, Juqing,Zhang, Wenlong,Li, Zhan,Lin, Qiang,Xu, Ji,&Han, Yongsheng.(2016).Competition of Major Forces Dominating the Structures of Porphyrin Assembly.CRYSTAL GROWTH & DESIGN,16(4),1942-1947.
MLA Ma, Juqing,et al."Competition of Major Forces Dominating the Structures of Porphyrin Assembly".CRYSTAL GROWTH & DESIGN 16.4(2016):1942-1947.
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