Direct Observation of Surface-Controlled Self-Assembly of Coordination Cages by Using AFM as a Molecular Ruler

Levi, Stefano A.; Guatteri, Paolo; Veggel, Frank C. J. M. van; Vancso, Gyula J.; Dalcanale, Enrico; Reinhoudt, David N.

doi:10.1002/1521-3773(20010518)40:10<1892::aid-anie1892>3.0.co;2-j

Cited by 51 publications

(27 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…690,691 The formation of the molecular cages was monitored directly by atomic force microscopy (AFM). Self-assembled monolayers of a cavitand, functionalized with four cyano groups at the apical positions on the upper rim, and four alkylthioether groups on the lower rim, were prepared by adsorption on gold surfaces at 60° C from an EtOH/CHCl 3 solution for 12 h. 690 Monolayers of self-assembled coordination cages were obtained by soaking the self-assembled monolayers of cavitands in a solution of [M(dppp)(OTf) 2 ] (M = Pd, Pt) and tetracyano substituted cavitand 465 . The self-assembly process was monitored by directly measuring the height profile of these cages by means of AFM using substrates containing internal height references prepared by microcontact printing.…”

Section: Miscelleneousmentioning

confidence: 99%

Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional Ensembles

2011

View full text Add to dashboard Cite

Section: Miscelleneousmentioning

confidence: 99%

Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional Ensembles

2011

View full text Add to dashboard Cite

“…The authors report on the preparation of scalable, nanopatterned monolayers of covalently bonded Mn 12 63 using both conventional mCP 64 and indirect mCP technique, also known as a ''molecular ruler'' approach. 65 mCP is flexible, and forms patterned SAMs with submicron lateral dimensions. 66,67 By direct mCP, they grow a monolayer of functionalised Mn 12 with a spatial resolution of several microns.…”

Section: (I) Nano-patterning By Lithographically Controlled (De)wettingmentioning

confidence: 99%

Single molecule magnets: from thin films to nano-patterns

Cavallini

Facchini

Albonetti

et al. 2008

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

Single molecule magnets (SMM) are a class of molecules exhibiting magnetic properties similar to those observed in conventional bulk magnets, but of molecular origin. SMMs have been proposed as potential candidates for several technological applications that require highly controlled thin films and patterns. Here we present an overview of the most important approaches for thin film growth and micro(nano)-patterning of SMM, giving special attention to Mn(12) based molecules. We present both conventional approaches to thin film growth (Langmuir-Blodgett, chemical approach, dip and dry, laser evaporation), patterning (micro-contact printing, deposition on patterned surface, moulding of homogeneous films) and new methods specifically developed for SMM (lithographically controlled wetting, lithographically controlled de-mixing).

show abstract

“…There are relatively few publications that describe the transfer of self-assembly protocols from the solution phase to surfaces [178]. The groups of Dalcanale and Reinhoudt reported recently on the attachment of thioether-functionalised coordination cages to gold substrates in micrometer-size patterned self-assembled monolayers (SAMs) [179]. The attachment of single molecular containers able to encapsulate ions and neutral molecules on solid surfaces is attractive for single-molecule addressing [180].…”

Section: Multilayer Assemblymentioning

confidence: 99%

Resorcarenes: Hollow Building Blocks for the Host-Guest Chemistry

Botta

Cassani

D’Acquarica

et al. 2005

COC

View full text Add to dashboard Cite

The continuous search for new qualities and the desirability of controlling the size, shape and the chemical features had led to the successful synthesis of various molecular containers and their complexes starting from resorcarene skeleton. The rigidified cavitands have been extended to capture in their round hug bigger and bigger molecules. By covalent synthesis many kinds of new hosts have been built, that maintain guests in their prison for more and more long time. Self assembly, driven by metal-ligand interaction, van der Waals forces, hydrophobicity and, mainly, hydrogen bonds, is at the base of capsules, a novel type of compounds with a peculiar inner phase, stereochemistry and reactivity. The amazing variety of hollow buildings with a resorcarene-based framework and often unique properties is reviewed. OH HO 1168 Current Organic Chemistry, 2005 Botta et al. RESORCARENES AS CONTAINER 2.1 Resorcarenes and Cations or Charged MoleculesAlso resorcarenes form stable complexes with alkali metal cations (Li I , Na I , K I , Rb I , Cs I ) [14]. The interaction of simple resorcarenes with metal cations and ammonium ions has been extensively studied. The conformational change of the host resorcarene, the most favourable binding locations and the relative binding energies have been investigated by ab initio methods [15]. The same group studied the interaction with cations of resorcarene 3a, (Chart 2) in comparison with its permethylated derivative 3b, by Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (ESI-FT-ICR-MS) and ab initio calculations [16]. The significance of intramolecular hydrogen bonding for the cone conformation and the presence of intramolecular flip-flop hydrogen bonding in 3a were confirmed by calculations and ND 3 -exchange experiments. Regard to the complexation, the following items were established: i) all the above alkali metal cations formed host-guest complexes by docking inside the cavity of the host; ii) the complexation with larger cations, especially Cs + , was favoured; iii) all the cations formed stable dimer resorcarene capsules. Chart 2. Resorcarenes octol (3a) and octamethyl ether (3b).Conversely, Cu II cations were shown to interact with cyano-4a (Chart 3) and amino-resorcarenes 4b, forming in the latter case a complex with octahedrical geometry, as evidenced by the EPR spectrum; accordingly, the computercalculated structure suggested a three-molecular complex between Cu II and two molecules of 4b, in which the ligands use three of their functionalities at the lower rim to fix the ion with a distorted octahedral coordination [17]. Chart 3. Resorcarenes interacting with metal cations.The interaction of resorc[4]arenes octamethyl ethers such as 4c with Fe III in organic media was analysed by 1 H NMR studies, carried out using Ga III instead of Fe III . As a result, resorcarenes bearing carboalkyloxy groups in the side chains were shown to have two active sites of interaction, the first located at the aromatic upper rim and the other in the vicinity ...

show abstract

Direct Observation of Surface-Controlled Self-Assembly of Coordination Cages by Using AFM as a Molecular Ruler

Cited by 51 publications

References 33 publications

Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional Ensembles

Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional Ensembles

Single molecule magnets: from thin films to nano-patterns

Resorcarenes: Hollow Building Blocks for the Host-Guest Chemistry

Contact Info

Product

Resources

About