Graphite interface

Fig. 10. TEM picture of a Ni metal left in the capillary of a graphite tube. Contact angle of the Ni particle on graphite surface (angle between the Ni/graphite interface and the Ni free surface) is larger than 90° (measured angle is about 140°), indicating poor wetting of Ni on the inner wall of a graphite tube.

McGonigal, G. C., Bernhardt, R. H., and Thomson, D. J. (1990). Imaging alkane layers at the liquid/graphite interface with the scanning tunneling microscope. Appt. Phys. Lett. 57, 28-30. 

Atomistic simulation of an atactic polypropylene/graphite interface has shown that the local structure of the polymer in the vicinity of the surface is different in many ways from that of the corresponding bulk. Near the solid surface the density profile of the polymer displays a local maximum, the backbone bonds of the polymer chains develop considerable parallel orientation to the surface [52]. This parallel orientation due to adsorption can be one of the reasons for the transcrystallinity observed in the case of many anisotropic filler particles. 

Fig. 41. Two independent measurements of force spectra of the MAC mode SFM at OMCTS-graphite interface. The amplitude of oscillation of the magnetic cantilever driven by an external magnetic field oscillates in both approaching (solid line) and retracting (dotted line) curves in the region of a few nanometers away from the surface due to ordered layers of OM-CTS molecules at the interface. The period of oscillation 8.2 A reflects the dimension ol OMCTS molecules along the direction perpendicular to the layers, a Driving frequency 500 Hz, scan rate 2.8 nm/s. b 200 Hz and 1.6 nm/s. The arrows on the plots correspond to repulsive-force maxima. Reproduced from [183]...

With the chiral center located in a side chain that is bent away from the surface, an achiral lattice is formed by the chiral diacetylene isophthalic acid derivative at the 1-octanol/graphite interface [73]. Because of the relatively weak interaction between the dangling chiral side chains, the achiral part of the molecule interacting with the substrate dominated the pattern formation. 

When a drop of pure Ni, or Fe or Co, is placed on a graphite substrate, melting starts at the Ni/graphite interface at a temperature corresponding to the eutectic transformation. Dissolution of carbon in Ni can produce at least three effects ... 

Figure 8.9. A possible effect of dissolution of graphite on wetting is the change of the crystallographic nature of the metal/graphite interface, a) Initial interface, b) interface during dissolution.

Monolayers of cyclothiophene macrocycles have been observed to form a complex with Cgo molecules, when studied with STM at a 1,2,4-trichlorobenzene solution/ graphite interface [13]. 

Johnson, L, Denoyel, R., Everett, D.H., and Rouquerol, J. (1990). Adsorption at the liquid/graphite interface Comparison of enthalpy data obtained from three different methods. Colloids Suf, 49, 133—48. 

Fig. 3 Top molecular models of the foldamers. Bottom constant-height STM image of a monolayer of the foldamer (m = i,n = 6) at the 1-octanol-graphite interface. Insets line profiles and a tentative model of packing. (Reproduced with permission from [7])...

Fig. 6 Chemical structures, representative STM image and schematic motif/model of A ISAl physisorbed at the 1-phenyloctane-graphite interface, B ISA2 at the 1-octanol-graphite interface, and C,D TTAl at the 1-phenyloctane-graphite interface. The scale bar in the STM images represents 2 nm. (Reproduced with permission from [12] and [13])...

Fig. 10 A STM image showing a monolayer of the bipyridine derivative physisorbed at the 1-phenyloctane-graphite interface. Image size 9.1x9. nm. B Molecular model. C STM image showing a monolayer of the bipyridine derivative physisorbed at the 1-phenyloctane-graphite interface after addition of Pd(OAc)2 solution. Image size 10.2x 10.2 nm. D Molecular model. (Reproduced with permission from [27])...

Fig. 14 STM images of a monolayer obtained by mixing TMA with A 1-hexadecanol (C15H33OH) and B 1-heptadecanol (C17H35OH) at the heptanoic acid-graphite interface. (Reproduced with permission from [40])...

Fig. 20 A Hydrogen bonding scheme of a TMA honeycomb network. STM images recorded at the heptanoic acid-graphite interface of a TMA honeycomb network in B absence and C presence of COR molecules. Empty pores are black. (Reproduced with permission from [54])...

Fig.22 Molecular models and corresponding STM images of Kagom network (DBAl) (20.0nmx20.0nm) and Honeycomb network (DBA2) (18.7 nmxl8.7 nm) recorded at the 1,2,4-trichlorobenzene-graphite interface. (Reproduced with permission from [62])...

Fig. 23 A Chemical structure of a DBA derivative with alkoxy chains and cartoon demonstrating the transition from a porous honeycomb structure to a dense packing upon elongation of the alkyl chains. B Guest-induced transition from a dense network to a honeycomb network. The graph shows the honeycomb coverage as a fimction of the guest (g) to host h) ratio. STM images (96nmx96nm) recorded at the 1,2,4-trichlorobenzene-graphite interface for different guest to host (g/h) ratios. (Reproduced with permission from [66])...

Fig. 25 A Model of the TMA flower motif and hydrogen-bonding scheme. B STM image (15 nmxl5 nm) of the TMA flower motif, observed at the pentanoic acid-graphite interface. C Relation between the observed TMA structure and the solvent. (Reproduced with permission from [52])...

Fig.26 Chemical structure of MTDP A STM image (8.1 nmxS.l nm) and model of a monolayer at the M-tetradecane-graphite interface. B, C STM images and models of two polymorphs at the M-tetradecane-Au(lll) interface (B 9.5 nmx9.5 nm, C 8.4 nmx8.4 nm). (Reproduced with permission from [77])...

Fig. 27 A STM image (llxl3nm ) at the liquid-graphite interface of a mixture of PAH and EPPAH. It is an image of a second epitaxial layer with a donor acceptor stoichiometry of 2 1 on top of a first epitaxial layer of PAH. The large features are PAH, the smaller and brighter features are EPPAH. EPPAH packs only every second row prohahly because of its preferential adsorption on the electron donor disk of PAH, which is exposed in the underlying first PAH layer (see model B). (Reproduced with permission from [81])...

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