Cell Adhesion Behavior on Enantiomerically Functionalized Zeolite L Monolayers

El‐Gindi, Jehad; Benson, Kathrin; Cola, Luisa De; Galla, Hans‐Joachim; Kehr, Nermin Seda

doi:10.1002/anie.201109144

Cited by 71 publications

(56 citation statements)

References 60 publications

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“…a,b We demonstrated the stereocontrolled interaction of different cell types on enantiomorphous SAMs of zeolite L surfaces and described that cells recognize and differentiate between the SAM of D ‐ or L ‐penicillamine functionalized zeolite surfaces. This new surface was also used for the selective separation of malignant C‐6‐glioma cell lines from primary endothelial cells . Recently, Yu and co‐workers described the effects of chiral and charged surface of hydrogels of oppositely charged oligopeptides on human mesenchymal stem cell (hMSC) behavior.…”

Section: Introductionmentioning

confidence: 98%

Cell Adhesion Behavior in 3D Hydrogel Scaffolds Functionalized with D‐ or L‐Aminoacids

Benson

Galla

Kehr

2014

Macromolecular Bioscience

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Alginate hydrogels functionalized with D-, or L-penicillamine (D-, L-PEN-Alg) are used as new 3D scaffolds for cell adhesion studies. The cells recognize and show different adhesion properties in the respective 3D hydrogel scaffolds. C-6-glioma and endothelial cells show higher affinity to the D-PEN than to the L-PEN functionalized 3D alginate hydrogel scaffold. The cultivated cells are harvested from the hydrogel and are reused, for example, for cell growth experiments on 2D surfaces to prove their viability as well.

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Section: Introductionmentioning

confidence: 98%

Cell Adhesion Behavior in 3D Hydrogel Scaffolds Functionalized with D‐ or L‐Aminoacids

Benson

Galla

Kehr

2014

Macromolecular Bioscience

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“…1,2,3 Microlasers, pigments, optical switches, or artificial antenna systems are only few of the possible applications of these fascinating systems. 4,5,6,7,8,9,10 To date, different zeolites with suitable channel dimensions, such as AlPO4-5, 11,12 zeolite Y, 13 zeolite L, 14,15 as well as mesoporous materials like MCM-41, 16 have been successfully adopted as nanosized host matrices for the synthesis of these composites. In this rapidly evolving scenario, the inclusion of photoactive molecules into one-dimensional channel systems is of paramount relevance for further progress in some of the most challenging fields of nanoscience and nanotechnology.…”

Section: Introductionmentioning

confidence: 99%

Close-Packed Dye Molecules in Zeolite Channels Self-Assemble into Supramolecular Nanoladders

et al. 2014

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A tough challenge in nanomaterials chemistry is the determination of the structure of multicomponent nanosystems. Dye-zeolite L composites are building blocks of hierarchically organized multifunctional materials for technological applications. Supramolecular organization inside zeolite L nanochannels, which governs electronic properties, is barely understood. This is especially true for confined close-packed dye molecules, a regime not investigated in applications yet and that might have great potential for future development in this field. Here we realize for the first time composites of zeolite L with maximally-packed fluorenone molecules and elucidate their structure by integrated multi-technique analyses. By IR, thermogravimetric and X-ray diffraction we establish the maximum degree of dye loading obtained (1.5 molecules per unit cell) and by modeling we reveal that at these conditions fluorenone molecules form quasi 1-D supramolecular nanoladders running along the zeolite channels. Spatial and morphological control provided by the nanoporous matrix combined with a complex blend of strong dye-zeolite and weaker dye-dye van der Walls interactions lie at the origin of this unique architecture, which is also stabilized by the hydrogen bond network of co-adsorbed water molecules surrounding the dye nanoladder and penetrating between its rungs.

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“…[3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] These are currently investigated for applications in different fields, ranging from sensing in analytical chemistry, biology, and diagnostics, [15][16][17][18] to applications in optical and electro optical devices [3][4][5][19][20][21] and extending to solar energy utilization, e.g. in the form of luminescent solar concentrators.…”

Section: Introductionmentioning

confidence: 99%

First-principles simulation of the absorption bands of fluorenone in zeolite L

Zhou

Wesołowski

Tabacchi

et al. 2013

Phys. Chem. Chem. Phys.

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The absorption spectrum of fluorenone in zeolite L is calculated from first-principles simulations. The broadening of each band is obtained from the explicit treatment of the interactions between the chromophore and its environment in the statistical ensemble. The comparison between the simulated and measured spectra reveals the main factors affecting the spectrum of the chromophore in hydrated zeolite L. Whereas each distinguishable band is found to originate from a single electronic transition, the bandwidth is determined by the statistical nature of the environment of the fluorenone molecule. The K + Á Á ÁOQC motif is retained in all conformations. Although the interactions between K + and the fluorenone carbonyl group result in an average lengthening of the CQO bond and in a redshift of the lowest energy absorption band compared to gas phase or non-polar solvents, the magnitude of this shift is noticeably smaller than the total shift. An important factor affecting the shape of the band is fluorenone's orientation, which is strongly affected by the presence of water.The effect of direct interactions between fluorenone and water is, however, negligible.

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Cell Adhesion Behavior on Enantiomerically Functionalized Zeolite L Monolayers

Cited by 71 publications

References 60 publications

Cell Adhesion Behavior in 3D Hydrogel Scaffolds Functionalized with D‐ or L‐Aminoacids

Cell Adhesion Behavior in 3D Hydrogel Scaffolds Functionalized with D‐ or L‐Aminoacids

Close-Packed Dye Molecules in Zeolite Channels Self-Assemble into Supramolecular Nanoladders

First-principles simulation of the absorption bands of fluorenone in zeolite L

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