Harold S. Freeman

5.2k total citations · 1 hit paper
165 papers, 4.0k citations indexed

About

Harold S. Freeman is a scholar working on Building and Construction, Organic Chemistry and Materials Chemistry. According to data from OpenAlex, Harold S. Freeman has authored 165 papers receiving a total of 4.0k indexed citations (citations by other indexed papers that have themselves been cited), including 69 papers in Building and Construction, 31 papers in Organic Chemistry and 30 papers in Materials Chemistry. Recurrent topics in Harold S. Freeman's work include Dyeing and Modifying Textile Fibers (69 papers), Dye analysis and toxicity (22 papers) and Carcinogens and Genotoxicity Assessment (19 papers). Harold S. Freeman is often cited by papers focused on Dyeing and Modifying Textile Fibers (69 papers), Dye analysis and toxicity (22 papers) and Carcinogens and Genotoxicity Assessment (19 papers). Harold S. Freeman collaborates with scholars based in United States, Brazil and China. Harold S. Freeman's co-authors include Jin-Seok Bae, Jolanta Sokołowska, Larry D. Claxton, Gisela de Aragão Umbuzeiro, Arnold T. Peters, Sarah H. Warren, Ahmed El‐Shafei, D. G. Hinks, Tetsushi Watanabe and Danielle Palma de Oliveira and has published in prestigious journals such as Chemical Reviews, Journal of the American Chemical Society and SHILAP Revista de lepidopterología.

In The Last Decade

Harold S. Freeman

159 papers receiving 3.9k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Dye Sensitizers for Photodynamic Therapy

2013 682 citations Harold S. Freeman et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Harold S. Freeman United States	29	1.2k	857	844	828	647	165	4.0k
Daniele Dondi Italy	38	1.7k 1.4×	675 0.8×	2.5k 2.9×	82 0.1×	191 0.3×	158	6.1k
Guido Viscardi Italy	43	3.8k 3.1×	612 0.7×	1.6k 1.9×	204 0.2×	119 0.2×	192	7.8k
Muhammad Rauf China	44	2.8k 2.2×	709 0.8×	941 1.1×	117 0.1×	41 0.1×	130	7.9k
Antônio E.H. Machado Brazil	30	979 0.8×	665 0.8×	585 0.7×	49 0.1×	231 0.4×	173	3.2k
Suna Wang China	46	2.6k 2.1×	386 0.5×	632 0.7×	88 0.1×	149 0.2×	224	6.4k
Guangfei Liu China	36	656 0.5×	645 0.8×	452 0.5×	90 0.1×	31 0.0×	135	3.6k
Thuan Van Tran Vietnam	44	2.2k 1.7×	982 1.1×	997 1.2×	48 0.1×	61 0.1×	157	5.6k
Yue Teng China	26	746 0.6×	284 0.3×	551 0.7×	81 0.1×	58 0.1×	93	2.8k
Danielle Palma de Oliveira Brazil	32	614 0.5×	333 0.4×	503 0.6×	178 0.2×	18 0.0×	99	3.6k
Xuwei Chen China	48	3.8k 3.1×	2.0k 2.4×	452 0.5×	66 0.1×	56 0.1×	241	7.5k

Countries citing papers authored by Harold S. Freeman

Since Specialization

Citations

This map shows the geographic impact of Harold S. Freeman'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 Harold S. Freeman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Harold S. Freeman more than expected).

Fields of papers citing papers by Harold S. Freeman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Harold S. Freeman. 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 Harold S. Freeman. The network helps show where Harold S. Freeman may publish in the future.

Co-authorship network of co-authors of Harold S. Freeman

This figure shows the co-authorship network connecting the top 25 collaborators of Harold S. Freeman. A scholar is included among the top collaborators of Harold S. Freeman 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 Harold S. Freeman. Harold S. Freeman is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Räisänen, Riikka, et al.. (2024). The natural anthraquinone dye emodin: Eco/genotoxicological characterization for aquatic organisms. Food and Chemical Toxicology. 189. 114749–114749. 2 indexed citations

Freeman, Harold S., et al.. (2024). Natural indigo toxicity for aquatic and terrestrial organisms. Ecotoxicology and Environmental Safety. 290. 117606–117606. 1 indexed citations

Albuquerque, Anjaína Fernandes de, et al.. (2023). Acryloyl esters of emodin for waterless dyeing and toxicological studies. Coloration Technology. 140(4). 620–628. 3 indexed citations

Albuquerque, Anjaína Fernandes de, et al.. (2023). Is natural better? An ecotoxicity study of anthraquinone dyes. Chemosphere. 343. 140174–140174. 8 indexed citations

Sannomiya, Míriam, Annie A. Cerón, Harold S. Freeman, et al.. (2023). Natural Dye Extracted from Pomegranate Peel: Physicochemical Characterization, Dyeing of Cotton Fabric, Color Fastness, and Photoprotective Properties. Fibers and Polymers. 24(4). 1321–1332. 14 indexed citations

Sannomiya, Míriam, Marcelo Marucci Pereira Tangerina, Marcelo J. P. Ferreira, et al.. (2022). Pomegranate peel extract and zinc oxide as a source of natural dye and functional material for textile fibers aiming for photoprotective properties. Materials Chemistry and Physics. 293. 126766–126766. 15 indexed citations

Freeman, Harold S., et al.. (2021). Copaifera langsdorffii Desf. bark extract: optimisation of dyeing conditions to wool and colour fastness properties. Natural Product Research. 36(14). 3744–3749. 5 indexed citations

Silva, Luciano da, Mario Sánchez, & Harold S. Freeman. (2020). New tetrazole based dyes as efficient co-sensitizers for dsscs: Structure-properties relationship. Organic Electronics. 87. 105964–105964. 17 indexed citations

Silva, Luciano da & Harold S. Freeman. (2019). Variation in hydrophobic chain length of co-adsorbents to improve dye-sensitized solar cell performance. Physical Chemistry Chemical Physics. 21(30). 16771–16778. 11 indexed citations

10.

El‐Shafei, Ahmed, et al.. (2018). Data from X-ray crystallographic analysis and DFT calculations on isomeric azo disperse dyes. Data in Brief. 21. 675–683. 4 indexed citations

11.

Kuenemann, Mélaine A., Nadia Sultana, D. G. Hinks, et al.. (2017). Weaver's historic accessible collection of synthetic dyes: a cheminformatics analysis. Chemical Science. 8(6). 4334–4339. 35 indexed citations

12.

Freeman, Harold S.. (2012). Aromatic amines: use in azo dye chemistry. Frontiers in bioscience. 18(1). 145–145. 42 indexed citations

13.

Vacchi, Francine Inforçato, Anjaína Fernandes de Albuquerque, Josiane Aparecida de Souza Vendemiatti, et al.. (2012). Chlorine disinfection of dye wastewater: Implications for a commercial azo dye mixture. The Science of The Total Environment. 442. 302–309. 63 indexed citations

14.

Fadda, Ahmed A., et al.. (2012). Synthesis and Pharmacological Screening of Novel meso‐Substituted Porphyrin Analogs. Archiv der Pharmazie. 346(1). 53–61. 40 indexed citations

15.

Freeman, Harold S., et al.. (2012). Effects of bis-carbazole based D—π-A sensitizers on solar energy capture in DSSCs. Photochemical & Photobiological Sciences. 12(3). 421–431. 3 indexed citations

16.

Bae, Jin-Seok, Harold S. Freeman, Sarah H. Warren, & Larry D. Claxton. (2006). Evaluation of new 2,2′-dimethyl-5,5′-dipropoxybenzidine- and 3,3′-dipropoxybenzidine-based direct dye analogs for mutagenic activity by use of the Salmonella/mammalian mutagenicity assay. Mutation Research/Genetic Toxicology and Environmental Mutagenesis. 603(2). 173–185. 4 indexed citations

17.

Umbuzeiro, Gisela de Aragão, Harold S. Freeman, Sarah H. Warren, et al.. (2005). The contribution of azo dyes to the mutagenic activity of the Cristais River. Chemosphere. 60(1). 55–64. 293 indexed citations

18.

Umbuzeiro, Gisela de Aragão, Harold S. Freeman, Sarah H. Warren, Fábio Kummrow, & Larry D. Claxton. (2004). Mutagenicity evaluation of the commercial product CI Disperse Blue 291 using different protocols of the Salmonella assay. Food and Chemical Toxicology. 43(1). 49–56. 68 indexed citations

19.

Freeman, Harold S., et al.. (2003). Developing azo and formazan dyes based on environmental considerations: Salmonella mutagenicity. Mutation research. Fundamental and molecular mechanisms of mutagenesis. 546(1-2). 17–28. 19 indexed citations

20.

Freeman, Harold S., et al.. (1990). The effect of alkoxy substituents on the mutagenicity of some aminoazobenzene dyes and their reductive-cleavage products. Mutation Research/Reviews in Genetic Toxicology. 238(1). 1–22. 20 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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