Normal coordinate analysis of deutero propenes in the free and zeolite-adsorbed state

Zakharieva, O.; Förster, H.; Turneva, M.

doi:10.1016/0584-8539(94)80111-8

Cited by 6 publications

(4 citation statements)

References 13 publications

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“…A pure TFAAD liquid shows peaks at 2856 and 2927 cm -1 from the aliphatic chain, plus weak peaks at 3106, 3078, and 2980 cm -1 . The slightly broadened peak at 3106 cm -1 has been previously assigned to an overtone of the "amide II" band (53), while the peak at 3078 cm -1 arises from the C-H vibrations of the terminal alkene (54). The spectrum of TFAAD grafted on TiO 2 shows large peaks at 2856 and 2727 cm -1 from the aliphatic chain and the weak amide II overtone peak at 3106 cm -1 ; however, the peak at 3078 cm -1 from the terminal vinyl group is absent.…”

Section: Resultsmentioning

confidence: 94%

Photochemical Grafting and Patterning of Biomolecular Layers onto TiO₂ Thin Films

Franking

Landis

et al. 2009

ACS Appl. Mater. Interfaces

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TiO2 thin films are highly stable and can be deposited onto a wide variety of substrate materials under moderate conditions. We demonstrate that organic alkenes will graft to the surface of TiO2 when illuminated with UV light at 254 nm and that the resulting layers provide a starting point for the preparation of DNA-modified TiO2 thin films exhibiting excellent stability and biomolecular selectivity. By using alkenes with a protected amino group at the distal end, the grafted layers can be deprotected to yield molecular layers with exposed primary amino groups that can then be used to covalently link DNA oligonucleotides to the TiO2 surface. We demonstrate that the resulting DNA-modified surfaces exhibit excellent selectivity toward complementary versus noncomplementary target sequences in solution and that the surfaces can withstand 25 cycles of hybridization and denaturation in 8.3 M urea with little or no degradation. Furthermore, the use of simple masking methods provides a way to directly control the spatial location of the grafted layers, thereby providing a way to photopattern the spatial distribution of biologically active molecules to the TiO2 surfaces. Using Ti films ranging from 10 to 100 nm in thickness allows the preparation of TiO2 films that range from highly reflective to almost completely transparent; in both cases, the photochemical grafting of alkenes can be used as a starting point for stable surfaces with good biomolecular recognition properties.

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Section: Resultsmentioning

confidence: 94%

Photochemical Grafting and Patterning of Biomolecular Layers onto TiO₂ Thin Films

Franking

Landis

et al. 2009

ACS Appl. Mater. Interfaces

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“…15 The propene spectrum exhibits multiple, clearly dened peaks which were assigned based on values reported in the literature. [16][17][18][19] The most important peaks of note are the methyl torsion at 220 cm À1 , the C]C-C scissors at 429 cm À1 , the ]CH 2 twist and rock at 585 and 915 cm À1 and the shape of the C-H stretch as a broad peak centred at 3000 cm À1 due to equal contributions from sp 2 and sp 3 C-H bonds. The shiing of some of these bands relative to their literature values is due to this spectrum being collected at low temperature and in the solid phase.…”

Section: Zsm-5 + Propene At 293 and 373 Kmentioning

confidence: 99%

Low-temperature studies of propene oligomerization in ZSM-5 by inelastic neutron scattering spectroscopy

et al. 2019

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Observation of the oligomerization of propene in ZSM-5 at 293 K by neutron vibrational spectroscopy shows that the product species are linear alkyl chains. No evidence is found for the formation of branched products. The selective formation of linear alkyl chains is attributed to a confinement effect within the zeolite pore structure. A role for zeolite crystallite size, a controllable parameter within the catalyst preparative stage, in being able to influence the product composition in technically relevant olefin oligomerization reactions is considered.

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“…The initial values for force Ðeld parameters have been taken from ref. 29 and minor adjustments made to Ðt the observed spectra. As for the ethene case, the analysis conÐrms molecular adsorption and that the molecule is essentially undistorted from the gas phase structure, as expected for physisorption.…”

Section: (Iii) Propenementioning

confidence: 99%

An inelastic neutron scattering spectroscopic investigation of the adsorption of ethene and propene on carbon

Lennon

McNamara

Phillips

et al. 2000

Phys. Chem. Chem. Phys.

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Normal coordinate analysis of deutero propenes in the free and zeolite-adsorbed state

Cited by 6 publications

References 13 publications

Photochemical Grafting and Patterning of Biomolecular Layers onto TiO₂ Thin Films

Photochemical Grafting and Patterning of Biomolecular Layers onto TiO₂ Thin Films

Low-temperature studies of propene oligomerization in ZSM-5 by inelastic neutron scattering spectroscopy

An inelastic neutron scattering spectroscopic investigation of the adsorption of ethene and propene on carbon

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Normal coordinate analysis of deutero propenes in the free and zeolite-adsorbed state

Cited by 6 publications

References 13 publications

Photochemical Grafting and Patterning of Biomolecular Layers onto TiO2 Thin Films

Photochemical Grafting and Patterning of Biomolecular Layers onto TiO2 Thin Films

Low-temperature studies of propene oligomerization in ZSM-5 by inelastic neutron scattering spectroscopy

An inelastic neutron scattering spectroscopic investigation of the adsorption of ethene and propene on carbon

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Product

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Photochemical Grafting and Patterning of Biomolecular Layers onto TiO₂ Thin Films

Photochemical Grafting and Patterning of Biomolecular Layers onto TiO₂ Thin Films