A comparative study of the infrared and Raman spectra of aniline and o-, m-, p-phenylenediamine isomers

Badawi, Hassan M.; Förner, Wolfgang; Ali, Shaikh A.

doi:10.1016/j.saa.2013.04.075

Cited by 53 publications

(47 citation statements)

References 23 publications

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“…The spectrum obtained for aniline is in a good agreement with the one provided by Badawi [24]; most of their band assignments Structures of amine and diazonium salt with the indexation of protons.…”

Section: Resultssupporting

confidence: 86%

“…The wavenumbers of important peaks are reported in Table 1 and their assignments were provided from the literature [24,29,30]. The spectrum obtained for aniline is in a good agreement with the one provided by Badawi [24]; most of their band assignments Structures of amine and diazonium salt with the indexation of protons.…”

Section: Resultssupporting

confidence: 76%

“…According to Badawi [24] and Wojciechowski [30], the peak at 386 cm -1 for the aniline molecule (Figure 1), corresponds to planar bending of an aromatic ring-N. However, this vibrational mode is less obvious for para-substituted amines.…”

Section: Ring-n Vibrational Modesmentioning

confidence: 94%

“…The same conclusion is valid for the range of 1250-1290 cm -1 , another range where a band corresponding to C-N vibration can be located. Raman bands for the amines observed between 1265 and 1279 cm -1 (Table 1) and assigned to ring-N stretching coupled to ring breathing and to ortho-CH in plane bending [24], is no longer seen in the diazonium salt spectra.…”

Section: Ring-n Vibrational Modesmentioning

confidence: 98%

“…Each spectrum was normalized to its maximum intensity. For calculations, spectra were normalized regarding the C=C stretching mode [24] observed between 1570 and 1611 cm …”

Section: Raman Measurementsmentioning

confidence: 99%

See 4 more Smart Citations

Raman Characterization of Phenyl-Derivatives: From Primary Amine to Diazonium Salts

Betelu¹,

Tijunelyte²,

Boubekeur-Lecaque³

et al. 2017

J Org Inorg Chem

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Section: Resultssupporting

confidence: 86%

Section: Resultssupporting

confidence: 76%

Section: Ring-n Vibrational Modesmentioning

confidence: 94%

Section: Ring-n Vibrational Modesmentioning

confidence: 98%

“…Each spectrum was normalized to its maximum intensity. For calculations, spectra were normalized regarding the C=C stretching mode [24] observed between 1570 and 1611 cm …”

Section: Raman Measurementsmentioning

confidence: 99%

See 3 more Smart Citations

Raman Characterization of Phenyl-Derivatives: From Primary Amine to Diazonium Salts

Betelu¹,

Tijunelyte²,

Boubekeur-Lecaque³

et al. 2017

J Org Inorg Chem

View full text Add to dashboard Cite

Carbon Dots as Ligand Operons to Expand Cluster Size Distribution for High Load‐bearing Liquid Superlubricity

Liang,

Liu,

Yin

et al. 2024

Adv Funct Materials

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Adding additives (e.g., carbon dots, CDs) to liquid lubricants is an effective method for enhancing their load‐bearing capacity and friction reduction. However, it is challenging to simultaneously impart high load‐bearing capacity and superlubricity for them (e.g., ionic liquid analogs, ILAs) through this strategy due to strong Coulombic interactions. With CDs as a competing ligand operon, the cluster size distribution can be expanded, conferring superlubricity with ultrahigh load‐bearing capacity (>705 MPa, the highest value of CDs‐based superlubricious materials thus far) for CDs/ILAs. In particular, methodologies such as Raman, 1H‐NMR, fourier transform infrared spectroscopy, and laser particle size analysis are employed to characterize the evolution of their H‐bonding interactions and particle size distribution. CDs can act as competing ligands and enable CDs/ILAs to form systems with ultra‐low coefficient of friction and wear consisting of a mixture of large and small clusters. The mixed and expanded size clusters facilitate the reduction of the viscosity for CDs/ILAs under shear, thereby reducing the interfacial shear resistance during superlubricity, while the CDs within them efficiently transfer the normal bearing loads. The progress is made from the perspective of cluster particle size distribution rather than individual additive properties, providing a new avenue for designing ILAs‐based superlubricious materials.

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An Interesting Nanoparticle‐Ligand Interaction Between Porphyrins and Gold Nanorods Leads to Luminescent Mesostructures

Candreva,

Damiano,

La Deda

et al. 2024

ChemNanoMat

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In this study, we aim to investigate the family of porphyrins from a novel perspective. In particular, we focus on their role in controlling the assembly of gold nanorods (AuNRs) through a synthetic approach. Using a seed‐mediated growth method, AuNRs were first synthesized. Then, the surfaces of the AuNRs were functionalized with four different types of porphyrins to explore their unique influence on the assembly process. Two pairs of porphyrins were synthesized: the metal‐free porphyrins 1 and 2 and the two corresponding zinc complexes Zn(1) and Zn(2). Compounds 1 and Zn(1) bind to the nanoparticle surface via an amine group, 2 and Zn(2) via a carbon‐carbon triple bond. A careful photophysical and morphological characterization has been carried out on the different samples, and interestingly, we observed that metal‐free porphyrins 1 and 2 promote nanoparticle assembly, forming luminescent mesostructures. Porphyrin 2 preferentially organizes nanorods by end‐to‐end assembly, whereas porphyrin 1 does not confer a preferential organization.

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A comparative study of the infrared and Raman spectra of aniline and o-, m-, p-phenylenediamine isomers

Cited by 53 publications

References 23 publications

Raman Characterization of Phenyl-Derivatives: From Primary Amine to Diazonium Salts

Raman Characterization of Phenyl-Derivatives: From Primary Amine to Diazonium Salts

Carbon Dots as Ligand Operons to Expand Cluster Size Distribution for High Load‐bearing Liquid Superlubricity

An Interesting Nanoparticle‐Ligand Interaction Between Porphyrins and Gold Nanorods Leads to Luminescent Mesostructures

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