J. Heldt

1.2k total citations
56 papers, 720 citations indexed

About

J. Heldt is a scholar working on Physical and Theoretical Chemistry, Atomic and Molecular Physics, and Optics and Materials Chemistry. According to data from OpenAlex, J. Heldt has authored 56 papers receiving a total of 720 indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Physical and Theoretical Chemistry, 30 papers in Atomic and Molecular Physics, and Optics and 20 papers in Materials Chemistry. Recurrent topics in J. Heldt's work include Photochemistry and Electron Transfer Studies (32 papers), Spectroscopy and Quantum Chemical Studies (15 papers) and Porphyrin and Phthalocyanine Chemistry (9 papers). J. Heldt is often cited by papers focused on Photochemistry and Electron Transfer Studies (32 papers), Spectroscopy and Quantum Chemical Studies (15 papers) and Porphyrin and Phthalocyanine Chemistry (9 papers). J. Heldt collaborates with scholars based in Poland, Germany and United States. J. Heldt's co-authors include Marek Józefowicz, H. Diehl, J. Kwela, Harold E. Van Wart, Woei‐Jer Chuang, В. И. Томин, J. Z. Kamiński, Michael Kasha, Jerzy Pączkowski and H. Walther and has published in prestigious journals such as Journal of Biological Chemistry, Chemical Physics Letters and The Journal of Physical Chemistry A.

In The Last Decade

J. Heldt

55 papers receiving 695 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
J. Heldt Poland 17 333 280 182 164 152 56 720
Jean M. MacInnis United States 11 487 1.5× 571 2.0× 249 1.4× 184 1.1× 89 0.6× 13 1.0k
Leonid Belau United States 13 370 1.1× 124 0.4× 128 0.7× 100 0.6× 230 1.5× 21 693
A. Bernas France 18 516 1.5× 485 1.7× 231 1.3× 194 1.2× 112 0.7× 51 1.0k
Ko Saito Japan 21 610 1.8× 339 1.2× 241 1.3× 309 1.9× 426 2.8× 71 1.3k
Linda Feketeová Austria 19 502 1.5× 145 0.5× 133 0.7× 119 0.7× 476 3.1× 67 979
David H. Magers United States 17 522 1.6× 144 0.5× 235 1.3× 370 2.3× 213 1.4× 37 990
Shan Xi Tian China 17 756 2.3× 253 0.9× 210 1.2× 161 1.0× 443 2.9× 105 1.2k
J.M.L. Poyato Spain 16 240 0.7× 165 0.6× 201 1.1× 180 1.1× 215 1.4× 53 873
Paul B. Comita United States 16 266 0.8× 125 0.4× 149 0.8× 261 1.6× 177 1.2× 36 1.0k
Daniel Peláez France 19 701 2.1× 296 1.1× 251 1.4× 151 0.9× 254 1.7× 54 1.2k

Countries citing papers authored by J. Heldt

Since Specialization
Citations

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

Fields of papers citing papers by J. Heldt

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. Heldt. 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 J. Heldt. The network helps show where J. Heldt may publish in the future.

Co-authorship network of co-authors of J. Heldt

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

All Works

20 of 20 papers shown
1.
Józefowicz, Marek, et al.. (2013). Quantum-chemical calculations of the electronic structure of 2-amino-1,3-dicyano-5,6,7,8-tetrahydronaphthalene derivatives. Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy. 113. 137–144. 2 indexed citations
2.
3.
Heldt, J., et al.. (2007). Luminescence studies of o-hydroxy p-amino and p-dimethylamino methyl benzoate. Journal of Luminescence. 128(8). 1307–1316. 17 indexed citations
4.
Heldt, J., et al.. (2006). Influence of spectral heterogeneity of prodan and laurdan solutions on the transfer of electronic energy to octadecyl rhodamine B. Biophysical Chemistry. 121(1). 57–64. 2 indexed citations
5.
Józefowicz, Marek, et al.. (2005). Effect of hydrogen bonding on the intramolecular charge transfer fluorescence of 6-dodecanoyl-2-dimethylaminonaphtalene. Chemical Physics. 320(1). 45–53. 43 indexed citations
6.
Józefowicz, Marek & J. Heldt. (2005). Solvent effects on electronic transitions of fluorenone and 4-hydroxyfluorenone. Chemical Physics. 323(2-3). 617–621. 35 indexed citations
7.
Heldt, J., et al.. (2004). Phase transition affects energy transfer efficiency in phospholipid vesicles. Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy. 61(6). 1153–1161. 17 indexed citations
8.
Heldt, J., et al.. (2004). Influence of Conformational Effects on Spectroscopic Properties of 2-Dimethylamino-9(4′-dimethylamino) phenyl-9-fluorenol. Journal of Fluorescence. 14(6). 723–731. 1 indexed citations
9.
Heldt, J., et al.. (2004). Spectral and photophysical properties of the bi-chromophoric fluorene derivatives. Journal of Molecular Structure. 734(1-3). 197–204. 2 indexed citations
10.
Heldt, J., et al.. (2003). Concentration and Temperature Dependence of Laurdan Fluorescence in Glycerol. Zeitschrift für Naturforschung A. 58(9-10). 581–588. 17 indexed citations
11.
Józefowicz, Marek, et al.. (2003). Fluorescence Quenching and Solvation Processes of Fluorenone and 4-hydroxyfluorenone in Binary Solvents. Zeitschrift für Naturforschung A. 58(2-3). 144–156. 15 indexed citations
12.
Józefowicz, Marek & J. Heldt. (2002). The red-edge effect in the spectra of fluorenone and 4-hydroxyfluorenone alcohol solutions. 57. 787–796. 2 indexed citations
13.
Heldt, J., et al.. (2001). Experimental and Theoretical Determination of Electronic State Energies of Naphthanilides. Zeitschrift für Naturforschung A. 56(12). 841–848. 4 indexed citations
14.
Heldt, J., et al.. (2001). Spectroscopic and Laser Studies of Mixed Rhodamine 6G and 10-Phenyl-9-acetoxyanthracene Solutions. Journal of Fluorescence. 11(4). 335–342. 4 indexed citations
15.
Heldt, J., et al.. (2000). Density functional study of the S0 (X1Ag) and T1 (ã3Au) states of the glyoxal molecule. Computers & Chemistry. 24(3-4). 263–274. 7 indexed citations
16.
Heldt, J., et al.. (2000). Spectroscopic Studies of Dimethylamino Derivatives of Fluorene. Zeitschrift für Naturforschung A. 55(11-12). 902–908. 4 indexed citations
17.
Kwela, J., et al.. (1997). Radiative lifetimes of the lowest 3P1 metastable states of Ca and Sr. Zeitschrift für Physik D Atoms Molecules and Clusters. 41(2). 125–131. 33 indexed citations
18.
El‐Daly, Samy A., et al.. (1996). Energy transfer and photodecomposition of antharacene laser dyes. Journal of the Chemical Society Faraday Transactions. 92(15). 2685–2685. 17 indexed citations
19.
Heldt, J., Ch. Ottinger, & A. F. Vilesov. (1994). Suppression of the collisional quenching of N2(A′5∑g+) by 15N2 isotopic substitution. Chemical Physics Letters. 227(1-2). 61–64. 2 indexed citations
20.
Dembiński, S.T., J. Heldt, & L. Wolniewicz. (1972). Zeeman Effect in the Multipole Line 4615 Å of Bi i. Journal of the Optical Society of America. 62(4). 555–555. 16 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Jean M. MacInnis Breakdown of academic impact, for papers by Leonid Belau Breakdown of academic impact, for papers by A. Bernas Breakdown of academic impact, for papers by Ko Saito Breakdown of academic impact, for papers by Linda Feketeová Breakdown of academic impact, for papers by David H. Magers Breakdown of academic impact, for papers by Shan Xi Tian Breakdown of academic impact, for papers by J.M.L. Poyato Breakdown of academic impact, for papers by Paul B. Comita Breakdown of academic impact, for papers by Daniel Peláez
Rankless by CCL
2026