Anna M. Helms

507 total citations
8 papers, 437 citations indexed

About

Anna M. Helms is a scholar working on Organic Chemistry, Materials Chemistry and Physical and Theoretical Chemistry. According to data from OpenAlex, Anna M. Helms has authored 8 papers receiving a total of 437 indexed citations (citations by other indexed papers that have themselves been cited), including 4 papers in Organic Chemistry, 4 papers in Materials Chemistry and 3 papers in Physical and Theoretical Chemistry. Recurrent topics in Anna M. Helms's work include Porphyrin and Phthalocyanine Chemistry (4 papers), Surface Chemistry and Catalysis (3 papers) and Spectroscopy and Quantum Chemical Studies (2 papers). Anna M. Helms is often cited by papers focused on Porphyrin and Phthalocyanine Chemistry (4 papers), Surface Chemistry and Catalysis (3 papers) and Spectroscopy and Quantum Chemical Studies (2 papers). Anna M. Helms collaborates with scholars based in United States. Anna M. Helms's co-authors include George McLendon, David Heiler, Richard A. Caldwell, William D. Jones, Paul S. Engel, Kazuhiko Mizuno, Yoshio Otsuji, Nobuyuki Ichinose, Susan Bane and Klaus M. Hahn and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Physical Chemistry and The Journal of Organic Chemistry.

In The Last Decade

Anna M. Helms

7 papers receiving 413 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Anna M. Helms United States	6	257	194	146	137	75	8	437
David Heiler United States	3	306 1.2×	208 1.1×	156 1.1×	115 0.8×	114 1.5×	5	455
David K. Luttrull United States	9	349 1.4×	200 1.0×	107 0.7×	132 1.0×	170 2.3×	12	535
Michael A. Bergkamp United States	10	223 0.9×	152 0.8×	80 0.5×	62 0.5×	71 0.9×	16	343
Ralf Matschiner Germany	11	284 1.1×	151 0.8×	126 0.9×	192 1.4×	28 0.4×	14	622
David Hanss Switzerland	11	278 1.1×	198 1.0×	198 1.4×	231 1.7×	52 0.7×	14	569
G. B. Maiya India	10	333 1.3×	118 0.6×	86 0.6×	79 0.6×	103 1.4×	12	472
Yeung-gyo K. Shin United States	7	128 0.5×	156 0.8×	141 1.0×	82 0.6×	87 1.2×	8	424
Kobi Hasharoni United States	10	303 1.2×	286 1.5×	134 0.9×	115 0.8×	114 1.5×	12	489
Hitoshi Tatemitsu Japan	16	227 0.9×	150 0.8×	105 0.7×	286 2.1×	74 1.0×	44	570
Rajdeep S. Kalgutkar United States	10	151 0.6×	160 0.8×	66 0.5×	230 1.7×	123 1.6×	15	481

Countries citing papers authored by Anna M. Helms

Since Specialization

Citations

This map shows the geographic impact of Anna M. Helms's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Anna M. Helms with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Anna M. Helms more than expected).

Fields of papers citing papers by Anna M. Helms

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Anna M. Helms. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Anna M. Helms. The network helps show where Anna M. Helms may publish in the future.

Co-authorship network of co-authors of Anna M. Helms

This figure shows the co-authorship network connecting the top 25 collaborators of Anna M. Helms. A scholar is included among the top collaborators of Anna M. Helms based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Anna M. Helms. Anna M. Helms is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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8 of 8 papers shown

Ichinose, Nobuyuki, Kazuhiko Mizuno, Yoshio Otsuji, Richard A. Caldwell, & Anna M. Helms. (1998). Photochemical C−C Bond Cleavage of 1,2-Diarylcyclopropanes Bearing an Acetylphenyl Group. Generation and Observation of Triplet 1,3-Biradicals. The Journal of Organic Chemistry. 63(10). 3176–3184. 15 indexed citations

Caldwell, Richard A., et al.. (1996). Triplet Energy and Lifetime of 2,3-Diazabicyclo[2.2.2]oct-1-ene. The Journal of Physical Chemistry. 100(45). 17716–17717. 10 indexed citations

Helms, Anna M. & Richard A. Caldwell. (1995). Triplet Species from Norbornadiene. Time-Resolved Photoacoustic Calorimetry and ab Initio Studies of Energy, Geometry, and Spin-Orbit Coupling. Journal of the American Chemical Society. 117(1). 358–361. 35 indexed citations

Helms, Anna M., David Heiler, & George McLendon. (1992). ChemInform Abstract: Electron Transfer in Bis‐Porphyrin Donor‐Acceptor Compounds with Polyphenylene Spacers Shows a Weak Distance Dependence.. ChemInform. 23(46). 1 indexed citations

Helms, Anna M., David Heiler, & George McLendon. (1992). Electron transfer in bis-porphyrin donor-acceptor compounds with polyphenylene spacers shows a weak distance dependence. Journal of the American Chemical Society. 114(15). 6227–6238. 232 indexed citations

Helms, Anna M., David Heiler, & George McLendon. (1991). Dependence of electron transfer rates on donor-acceptor angle in bis-porphyrin adducts. Journal of the American Chemical Society. 113(11). 4325–4327. 123 indexed citations

Helms, Anna M., William D. Jones, & George McLendon. (1991). Crystal Structure and Chemical Reactivity of Heme Phenoxide Adducts. Journal of Coordination Chemistry. 23(1-4). 351–359. 17 indexed citations

Hahn, Klaus M., et al.. (1991). Structural requirements for the binding of colchicine analogs to tubulin: the role of the C-10 substituent. Bioorganic & Medicinal Chemistry Letters. 1(9). 471–476. 4 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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