Author
R. J. D. Smith
Bio: R. J. D. Smith is an academic researcher from National Research Council. The author has contributed to research in topics: Infrared spectroscopy & Infrared. The author has an hindex of 2, co-authored 2 publications receiving 197 citations.
Papers
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TL;DR: In this paper, the authors observed that unsaturated lactones exhibit two bands in the region of the spectrum associated with the C=O stretching vibrational mode, which is observed both in the infrared and Raman spectra.
Abstract: Certain types of unsaturated lactones exhibit two bands in the region of the spectrum associated with the C=O stretching vibrational mode. This is observed both in the infrared and Raman spectra.Th...
158 citations
TL;DR: In this article, a comparison of the infrared and Raman spectra of yclopentanone and cyclopentansone was performed, and it was shown that the doublet carbonyl stretching band in the spectra is caused by an intramolecular vibrational effect, and does not involve conformational isomerism or dimolecular association.
44 citations
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TL;DR: A crystalline germination stimulant for the rootparasite, witchweed (Striga lutea Lour.), has been isolated from cotton rootexudates and characterized as a C19H22O6 compound, although apparently different from known plant hormones.
Abstract: A crystalline germination stimulant (trivial name strigol) for the rootparasite, witchweed (Striga lutea Lour.), has been isolated from cotton rootexudates and characterized as a C(19)H(22)O(6) compound. Although apparently different from known plant hormones, the stimulant is active at hormonal levels, causing germination at concentrations less than 1O(-5) part per million.
818 citations
TL;DR: An overview of the natural presence and development of the chemistry of the 2 H -pyran-2-one ring system is delineated in this article, where 363 references are provided.
221 citations
TL;DR: In this paper, the infrared spectrum between 33 and 400 cm−1 has been examined in the vapor and liquid phases for the following 26 compounds: o-, m-, and p-F, Cl, Br, and CH3 benzaldehydes; pyridine-2-, -3-, and 4-aldeydes; acetophenone and its o-,m-, andp- F derivatives; furan-2-aldehyde; and several monofluorostyrenes and -nitrobenzenes.
149 citations
TL;DR: The extensive connectivity of the BANFs allows them to form hydro- and aerogel monoliths with an order of magnitude less solid content than rod-like nanocomponents, and branching of nanofibers also leads to improved mechanics of gels and nanocomposites.
Abstract: Interconnectivity of components in three-dimensional networks (3DNs) is essential for stress transfer in hydrogels, aerogels, and composites. Entanglement of nanoscale components in the network relies on weak short-range intermolecular interactions. The intrinsic stiffness and rod-like geometry of nanoscale components limit the cohesive energy of the physical crosslinks in 3DN materials. Nature realizes networked gels differently using components with extensive branching. Branched aramid nanofibers (BANFs) mimicking polymeric components of biological gels were synthesized to produce 3DNs with high efficiency stress transfer. Individual BANFs are flexible, with the number of branches controlled by base strength in the hydrolysis process. The extensive connectivity of the BANFs allows them to form hydro- and aerogel monoliths with an order of magnitude less solid content than rod-like nanocomponents. Branching of nanofibers also leads to improved mechanics of gels and nanocomposites.
137 citations
TL;DR: In this paper, the Integrated Intensities of Absorption Bands in Infrared Spectroscopy (IIBB) was used for IR spectroscopy, and it was shown that the bands can be used to measure the intensity of IR spectra.
Abstract: (1967). Integrated Intensities of Absorption Bands in Infrared Spectroscopy. Applied Spectroscopy Reviews: Vol. 1, No. 1, pp. 29-98.
132 citations