TY - JOUR
T1 - Kinetically controlled assembly of a spirocyclic aromatic hydrocarbon into polyhedral micro/nanocrystals
AU - Lin, Zong Qiong
AU - Sun, Peng Ju
AU - Tay, Yee Yan
AU - Liang, Jing
AU - Liu, Yi
AU - Shi, Nai En
AU - Xie, Ling Hai
AU - Yi, Ming Dong
AU - Qian, Yan
AU - Fan, Qu Li
AU - Zhang, Hua
AU - Hng, Huey Hoon
AU - Ma, Jan
AU - Zhang, Qichun
AU - Huang, Wei
PY - 2012/6/26
Y1 - 2012/6/26
N2 - Figure Persented: Nonplane molecules with multiple large aromatic planes could be promising candidates to form various polyhedral micro/nanocrystals by manipulating the different π⋯π stacking, tuning the cohesive energies of crystal facets, and controlling the kinetic growth process. Spirocyclic aromatic hydrocarbons (SAHs) not only have two cross-shaped aromatic planes but also offer the feature of supramolecular steric hindrance, making it favorable for the heterogeneous kinetic growth into highly symmetric polyhedra. Herein, we report that a novel SAH compound, spiro[fluorene-9,7′- dibenzo[c,h]acridine]-5′-one (SFDBAO), can self-assemble into various monodispersed shapes such as hexahedra, octahedra, and decahedra through the variation of either different types of surfactants, such as Pluronic 123 (P123) and cetyltrimethyl ammonium bromide (CTAB), or growth parameters. In addition, the possible mechanism of crystal facet growth has been proposed according to the SEM, XRD, TEM, and SAED characterization of organic polyhedral micro/nanocrystals. The unique cruciform-shaped SAHs have been demonstrated as fascinating supramolecular synthons for various highly symmetric polyhedral assembling.
AB - Figure Persented: Nonplane molecules with multiple large aromatic planes could be promising candidates to form various polyhedral micro/nanocrystals by manipulating the different π⋯π stacking, tuning the cohesive energies of crystal facets, and controlling the kinetic growth process. Spirocyclic aromatic hydrocarbons (SAHs) not only have two cross-shaped aromatic planes but also offer the feature of supramolecular steric hindrance, making it favorable for the heterogeneous kinetic growth into highly symmetric polyhedra. Herein, we report that a novel SAH compound, spiro[fluorene-9,7′- dibenzo[c,h]acridine]-5′-one (SFDBAO), can self-assemble into various monodispersed shapes such as hexahedra, octahedra, and decahedra through the variation of either different types of surfactants, such as Pluronic 123 (P123) and cetyltrimethyl ammonium bromide (CTAB), or growth parameters. In addition, the possible mechanism of crystal facet growth has been proposed according to the SEM, XRD, TEM, and SAED characterization of organic polyhedral micro/nanocrystals. The unique cruciform-shaped SAHs have been demonstrated as fascinating supramolecular synthons for various highly symmetric polyhedral assembling.
KW - cruciform-shaped molecules
KW - kinetic crystal growth
KW - polyhedron
KW - spirocyclic aromatic hydrocarbon
KW - supramolecular assembly
KW - surfactant
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U2 - 10.1021/nn3011398
DO - 10.1021/nn3011398
M3 - Article
C2 - 22575153
AN - SCOPUS:84862881117
SN - 1936-0851
VL - 6
SP - 5309
EP - 5319
JO - ACS Nano
JF - ACS Nano
IS - 6
ER -