FT-IR and raman spectra of a series of metallo-?-cyclodextrin complexes

McNamara, Mary; Russell, Noel R.

doi:10.1007/bf01061078

Cited by 36 publications

(12 citation statements)

References 12 publications

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“…37 The pyridine bands overlay somewhat weaker contributions to the spectrum between 1200 and 1700 cm À1 assigned to a combination of g-CD C-C stretching, C-OH deformation and CH 2 deformation modes. 38 CD bands between 1000 and 1200 cm À1 are assigned to C-OH stretching and -OH deformation modes. Similar spectroscopy was observed for b-CD-py.…”

Section: B-cd-py and C-cd-(py) 2 Monolayer Formationmentioning

confidence: 99%

Interfacial supramolecular cyclodextrin-fullerene assemblies: host reorientation and guest stabilization

McNally

Forster

Keyes

2009

Phys. Chem. Chem. Phys.

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Monolayers of mono and bis-pyridine-substituted beta- and gamma-cyclodextrins have been self-assembled onto polycrystalline gold electrodes and electrochemically characterised. Surface enhanced Raman spectroscopy (SERS) has been used to probe the time dependent reorientation of the CDs and to probe the effect of co-adsorbing alkane thiols. Significantly, we observe novel SERS signatures for carbohydrate centred between 2100 and 2300 cm(-1) which is sensitive to the orientation of the CD moiety on the gold surface. These modes are thought to arise from direct interactions between the CD pyranose ring and the gold substrate and are useful markers for assigning orientation of CD within a film. SERS confirmed, as was intimated from a previous electrochemical study, that significant reorientation of the CD groups within the film occurs on annealing and this orientation can be reversed by backfilling with alkane thiol. C(60), in its unmodified state, was then immobilised through host-guest assembly into the backfilled CD monolayers to produce a 2 : 1 CD : C(60) trilayer. These CD capped fullerenes are protected from photopolymerisation and exhibit well-defined redox processes.

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Section: B-cd-py and C-cd-(py) 2 Monolayer Formationmentioning

confidence: 99%

Interfacial supramolecular cyclodextrin-fullerene assemblies: host reorientation and guest stabilization

McNally

Forster

Keyes

2009

Phys. Chem. Chem. Phys.

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“…The Raman spectra of as synthesized Cu(II)‐β‐CD is shown in Figure , the observed band frequencies are 481, 855, 995, 1127, and 1340 cm −1 , when material was prepared under argon. The Raman bands at 481 cm −1 due to skeletal vibration and 855 cm −1 may be due to bending of ‐C–CH . The Raman band at 995 cm −1 is due skeletal vibration involving α‐1,4 linkage.…”

Section: Resultsmentioning

confidence: 98%

Cu (II)-β-CD as Water-Loving Catalyst for One-Pot Synthesis of Triazoles and Biofuels Intermediate at Room Temperature without Any Other Additive

Gupta

Mishra²,

Kundu³

2017

ChemistrySelect

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Use water as solvent for the organic synthesis a great choice because it is economical, reduces waste and avoids potentially hazardous reagents versus the conventional solvents. This account presents the Cu(II)‐β‐CD as water soluble green catalyst for the one‐pot conversion benzyl halide to benzyl azide and 1,2,3‐trizoles at room temperature and very short reaction time (15‐70 min). Products are separated without any workup, simple by filtration, with >99 % selectivity and purity. As‐synthesized material was characterized by, HR‐TEM, XPS, FESEM, FT‐IR, TGA and XRD to understand its structural properties as well as attachment of copper by host‐guest interaction. This catalyst can also show effectiveness for the condensed ketone and aldehydes moiety, which produce biofuels intermediate. The recyclability of this catalytic system was tested up to five cycles and only a very slight loss of catalytic activity was detected.

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“…The peak around 1655 cm −1 is attributed to the O–H bending vibration of adsorbed water and hydroxyl groups in β -CD molecule. The absorption peak around 1033 cm −1 is stretching vibration of C–O–C and C–O bonds in the hole 28 43 44 45 . Moreover, new weak distinct peaks appeared around 1255 cm −1 and 3700 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

Cyclodextrin-Based Metal-Organic Nanotube as Fluorescent Probe for Selective Turn-On Detection of Hydrogen Sulfide in Living Cells Based on H2S-Involved Coordination Mechanism

Xin

Wang

Gong

et al. 2016

Sci Rep

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Hydrogen sulfide (H2S) has been considered as the third biologically gaseous messenger (gasotransmitter) after nitric oxide (NO) and carbon monoxide (CO). Fluorescent detection of H2S in living cells is very important to human health because it has been found that the abnormal levels of H2S in human body can cause Alzheimer’s disease, cancers and diabetes. Herein, we develop a cyclodextrin-based metal-organic nanotube, CD-MONT-2, possessing a {Pb14} metallamacrocycle for efficient detection of H2S. CD-MONT-2′ (the guest-free form of CD-MONT-2) exhibits turn-on detection of H2S with high selectivity and moderate sensitivity when the material was dissolved in DMSO solution. Significantly, CD-MONT-2′ can act as a fluorescent turn-on probe for highly selective detection of H2S in living cells. The sensing mechanism in the present work is based on the coordination of H2S as the auxochromic group to the central Pb(II) ion to enhance the fluorescence intensity, which is studied for the first time.

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FT-IR and raman spectra of a series of metallo-?-cyclodextrin complexes

Cited by 36 publications

References 12 publications

Interfacial supramolecular cyclodextrin-fullerene assemblies: host reorientation and guest stabilization

Interfacial supramolecular cyclodextrin-fullerene assemblies: host reorientation and guest stabilization

Cu (II)-β-CD as Water-Loving Catalyst for One-Pot Synthesis of Triazoles and Biofuels Intermediate at Room Temperature without Any Other Additive

Cyclodextrin-Based Metal-Organic Nanotube as Fluorescent Probe for Selective Turn-On Detection of Hydrogen Sulfide in Living Cells Based on H2S-Involved Coordination Mechanism

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