Self-assembly of sandwich-type (phthalocyaninato)(porphyrinato) europium double-decker complexes: Effects of hydrogen bonding on intermolecular stacking mode and morphology of self-assembled nanostructures

Fluorenylmethyloxycarbonyl substituted cardanol derivatives self-assembled into long fibers in methanol and crosslinked to form gels in DMSO/water. The role of hydrogen-bonding, hydrophobicity, and π–π stacking in governing self-assembly and hydrogel formation is investigated.

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Sandwich-type mixed (phthalocyaninato)(porphyrinato) rare earth double-decker complexes with decreased molecular symmetry of Cs: Single crystal structure and self-assembled nano-structure

Dalton Transactions ◽

10.1039/c0dt01200a ◽

2011 ◽

Vol 40 (1) ◽

pp. 107-113 ◽

Cited By ~ 14

Author(s):

Xingcui Wu ◽

Wei Lv ◽

Quanbo Wang ◽

Hailong Wang ◽

Xiaomei Zhang ◽

...

Keyword(s):

Crystal Structure ◽

Rare Earth ◽

Single Crystal ◽

Single Crystal Structure ◽

Molecular Symmetry ◽

Nano Structure ◽

Double Decker ◽

Sandwich Type ◽

Self Assembled

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Halogen bonding controlled 2D self-assembled polymorphism of regioisomeric thienophenanthrene derivatives by coadsorption

New Journal of Chemistry ◽

10.1039/d1nj00203a ◽

2021 ◽

Author(s):

Peng Pang ◽

Yi Wang ◽

Xinrui Miao ◽

Bang Li ◽

Wenli Deng

Keyword(s):

Hydrogen Bonding ◽

Formation Mechanism ◽

Self Assembly ◽

Halogen Bond ◽

Bond Formation ◽

Halogen Bonding ◽

Supramolecular Assemblies ◽

The Self ◽

Self Assembled

Deeply understanding the halogen-bond formation mechanism in surface-supported supramolecular assemblies is under explored compared with the existing knowledge of hydrogen bonding. Here we report the self-assembly of regioisomeric bromine substituted...

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Self-Assembled Nano-Structures of Sandwich-Type Mixed (Phthalocyaninato)(porphyrinato) Rear Earth Complexes. Effect of Porphyrin-Phthalocyanine Ligands on Tuning the Inter-Molecular Interaction

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.79-82.341 ◽

2009 ◽

Vol 79-82 ◽

pp. 341-344 ◽

Cited By ~ 2

Author(s):

Li Na Chen ◽

Yan Li Chen ◽

Pei Hua Zhu ◽

Guo Xin Sun ◽

Hong Yan Wang ◽

...

Keyword(s):

Electronic Absorption ◽

Self Assembly ◽

Molecular Interaction ◽

Van Der Waals ◽

Spherical Shape ◽

Rare Earth Complex ◽

Solvent Vapor ◽

Nano Structures ◽

Sandwich Type ◽

Self Assembled

phthalocyanine, porphyrin, sandwich rare earth complex, nanostructure, self-assembly. Abstract. Three novel sandwich-type mixed (phthalocyaninato)(porphyrinato) rear earth complexes, namely Ce(DPP)(Pc)(1), Sm2(DPP)(Pc)2(2) and Sm2(DPP)2(Pc)(3) [Pc = dianion of phthalocyanine, DPP= dianion of 5,15-di(phenyl)porphyrin], have been fabricated into nano-assemblies onto the SiO2 surface by a surface assisted solvent-vapor annealing method. The effect of the number of porphyrin and phthalocyanine ligands on the morphology of self-assembled nanostructures of these double- and triple-decker complexes has been systematically studied. Competition and cooperation between the inter-molecular - interaction, van der Waals, and metal-ligand coordination for different compounds results in nanostructures with different morphology from approximately spherical shape with average size of ~300 nm and ~400 nm for 1 and 2, respectively, nano-rods with aspect ratio (length over width) around 5 for 3, which were characterized by electronic absorption, X-ray diffraction (XRD), and atomic force microscopy (AFM). Electronic absorption spectroscopic results reveal the formation of J-aggregates in the nano-structures and suggest the increasing - interaction in the order of 3, 1, to 2. Examination by XRD reveal that in the nanostructures of compounds 1-3, a dimeric supramolecular structure was formed through an intermolecular - interaction and/or van der Waals between two sandwich-type molecules, which as the building block self-assembles into the target nanostructures.

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Nanoscale Self-Assembly Using Ion and Electron Beam Techniques: A Rapid Review

MRS Advances ◽

10.1557/adv.2020.349 ◽

2020 ◽

Vol 5 (64) ◽

pp. 3507-3520

Author(s):

Chunhui Dai ◽

Kriti Agarwal ◽

Jeong-Hyun Cho

Keyword(s):

Electron Beam ◽

Self Assembly ◽

Ion Beam ◽

Three Dimensional ◽

The Self ◽

Stress Generation ◽

Rapid Review ◽

High Yield ◽

3D Nanostructures ◽

Self Assembled

AbstractNanoscale self-assembly, as a technique to transform two-dimensional (2D) planar patterns into three-dimensional (3D) nanoscale architectures, has achieved tremendous success in the past decade. However, an assembly process at nanoscale is easily affected by small unavoidable variations in sample conditions and reaction environment, resulting in a low yield. Recently, in-situ monitored self-assembly based on ion and electron irradiation has stood out as a promising candidate to overcome this limitation. The usage of ion and electron beam allows stress generation and real-time observation simultaneously, which significantly enhances the controllability of self-assembly. This enables the realization of various complex 3D nanostructures with a high yield. The additional dimension of the self-assembled 3D nanostructures opens the possibility to explore novel properties that cannot be demonstrated in 2D planar patterns. Here, we present a rapid review on the recent achievements and challenges in nanoscale self-assembly using electron and ion beam techniques, followed by a discussion of the novel optical properties achieved in the self-assembled 3D nanostructures.

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Self-Assembly of a Chiral Cubic Three-Connected Net from the High Symmetry Molecules C60 and SnI4

10.26434/chemrxiv.12196788 ◽

2020 ◽

Author(s):

Daniel B. Straus ◽

Robert J. Cava

Keyword(s):

Organic Synthesis ◽

Self Assembly ◽

Van Der Waals ◽

Van Der Waals Forces ◽

High Symmetry ◽

Molecular Chirality ◽

Chiral Materials ◽

Self Assembled ◽

Chiral Centers

The design of new chiral materials usually requires stereoselective organic synthesis to create molecules with chiral centers. Less commonly, achiral molecules can self-assemble into chiral materials, despite the absence of intrinsic molecular chirality. Here, we demonstrate the assembly of high-symmetry molecules into a chiral van der Waals structure by synthesizing crystals of C60(SnI4)2 from icosahedral buckminsterfullerene (C60) and tetrahedral SnI4 molecules through spontaneous self-assembly. The SnI4 tetrahedra template the Sn atoms into a chiral cubic three-connected net of the SrSi2 type that is held together by van der Waals forces. Our results represent the remarkable emergence of a self-assembled chiral material from two of the most highly symmetric molecules, demonstrating that almost any molecular, nanocrystalline, or engineered precursor can be considered when designing chiral assemblies.

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Effects of Hydrogen Bonding on the Monolayer Properties of Amphiphilic Double-Decker-Shaped Polyhedral Silsesquioxanes

Langmuir ◽

10.1021/la2021726 ◽

2011 ◽

Vol 27 (14) ◽

pp. 9068-9068 ◽

Cited By ~ 4

Author(s):

Asuman C. Kucuk ◽

Jun Matsui ◽

Tokuji Miyashita

Keyword(s):

Hydrogen Bonding ◽

Double Decker

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Nano- and Micropatterning on Optical Fibers by Bottom-Up Approach: The Importance of Being Ordered

Applied Sciences ◽

10.3390/app11073254 ◽

2021 ◽

Vol 11 (7) ◽

pp. 3254

Author(s):

Marco Pisco ◽

Francesco Galeotti

Keyword(s):

Optical Fiber ◽

Optical Fibers ◽

Self Assembly ◽

Ordered Structures ◽

Bottom Up ◽

Photonic Structures ◽

Fiber Technology ◽

Optical Fiber Probes ◽

Fiber Probes ◽

Self Assembled

The realization of advanced optical fiber probes demands the integration of materials and structures on optical fibers with micro- and nanoscale definition. Although researchers often choose complex nanofabrication tools to implement their designs, the migration from proof-of-principle devices to mass production lab-on-fiber devices requires the development of sustainable and reliable technology for cost-effective production. To make it possible, continuous efforts are devoted to applying bottom-up nanofabrication based on self-assembly to decorate the optical fiber with highly ordered photonic structures. The main challenges still pertain to “order” attainment and the limited number of implementable geometries. In this review, we try to shed light on the importance of self-assembled ordered patterns for lab-on-fiber technology. After a brief presentation of the light manipulation possibilities concerned with ordered structures, and of the new prospects offered by aperiodically ordered structures, we briefly recall how the bottom-up approach can be applied to create ordered patterns on the optical fiber. Then, we present un-attempted methodologies, which can enlarge the set of achievable structures, and can potentially improve the yielding rate in finely ordered self-assembled optical fiber probes by eliminating undesired defects and increasing the order by post-processing treatments. Finally, we discuss the available tools to quantify the degree of order in the obtained photonic structures, by suggesting the use of key performance figures of merit in order to systematically evaluate to what extent the pattern is really “ordered”. We hope such a collection of articles and discussion herein could inspire new directions and hint at best practices to fully exploit the benefits inherent to self-organization phenomena leading to ordered systems.

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