Sameh H. Abdelwahed

Dr. Sameh H. Abdelwahed

Prairie View A&M University, Prairie View, Texas, USA
orcid

Research Focus & Metrics

Academic Career Length

27Years (2000-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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22 December 2000 in Molecules
Verified
Journal Article
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AEAfaf H. El-Masry
Afaf H. El-Masry
HFH. H. Fahmy
H. H. Fahmy
SASameh H. Abdelwahed
Sameh H. Abdelwahed
Reaction of 3-(2-methylbenzimidazol-1-yl)propanoic acid hydrazide (1) with CS2/KOH gave oxadiazole 2 which underwent Mannich reaction to give 3. Compound 2 was treated with hydrazine hydrate to give triazole 4 which was treated with both aldehydes and acetic anhydride to give 5 and 6, respectively. Carbohydrazide 1 was reacted with ethyl acetoacetate, acetylacetone and aldehydes to give 7, 8 and 9, respectively. Cyclocondensation of 9 with thioglycolic and thiolactic acids gave 10 and 11, respectively. Some of these compounds showed potential antimicrobial activities.

28 June 2003 in Journal of the American Chemical Society
Verified
Journal Article
Closed access
RRRajendra Rathore
Rajendra Rathore
SASameh H. Abdelwahed
Sameh H. Abdelwahed
IGIlia A. Guzei
Ilia A. Guzei

18 June 2010 in Science
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Journal Article
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JVJosh Vura-Weis
Josh Vura-Weis
SASameh H. Abdelwahed
Sameh H. Abdelwahed
RSRuchi Shukla
Ruchi Shukla
RRRajendra Rathore
Rajendra Rathore
MRMark A. Ratner
Mark A. Ratner
MWMichael R. Wasielewski
Michael R. Wasielewski
Tracking Triplet-State Transfers: In devices such as organic transistors and photovoltaic cells, energy flow from donor to acceptor sites can occur via electrons that have been excited into higher electronic levels, which create a triplet state with two unpaired spins. At short distances between donor and acceptor, the transfer occurs through direct tunneling, but at longer distances, the electron “hops” in a multistep process. Vura-Weis et al. (p. 1547 ) used femtosecond transient absorption spectroscopy to observe this crossover in transfer mechanism directly in a series of molecules with varying bridge lengths between the donor and acceptor.

1 February 2015 in Journal of Biological Chemistry
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Journal Article
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AMAngad P. Mehta
Angad P. Mehta
SASameh H. Abdelwahed
Sameh H. Abdelwahed
NMNilkamal Mahanta
Nilkamal Mahanta
DFDmytro Fedoseyenko
Dmytro Fedoseyenko
BPBenjamin Philmus
Benjamin Philmus
TBTadhg P. Begley
Tadhg P. Begley
In this minireview, we describe the radical S-adenosylmethionine enzymes involved in the biosynthesis of thiamin, menaquinone, molybdopterin, coenzyme F420, and heme. Our focus is on the remarkably complex organic rearrangements involved, many of which have no precedent in organic or biological chemistry.

23 April 2004 in Organic Letters
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Journal Article
Closed access
RRRajendra Rathore
Rajendra Rathore
CBCarrie L. Burns
Carrie L. Burns
SASameh H. Abdelwahed
Sameh H. Abdelwahed

11 May 2005 in Journal of the American Chemical Society
Verified
Journal Article
Closed access
RRRajendra Rathore
Rajendra Rathore
VCVincent J. Chebny
Vincent J. Chebny
SASameh H. Abdelwahed
Sameh H. Abdelwahed