World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
69
Citations
23178
World Ranking
6086
National Ranking
17

Reşat Apak publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Reşat Apak sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 318 publications — 67th percentile

67% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Reşat Apak D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Reşat Apak sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 69 D-Index — 66th percentile

66% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Reşat Apak is affiliated with Istanbul University in Turkey and has an extensive research portfolio primarily within the fields of Chemistry and Engineering. Their work spans various subfields including Electrical and Electronic Engineering, Materials Chemistry, Biochemistry, Spectroscopy, and Organic Chemistry.

Their main research topics cover a range of subjects with significant output in:

  • Electrochemical sensors and biosensors
  • Advanced Nanomaterials in Catalysis
  • Advanced Chemical Sensor Technologies
  • Free Radicals and Antioxidants
  • Molecular Sensors and Ion Detection
  • Electrochemical Analysis and Applications
  • Phytochemicals and Antioxidant Activities

Reşat Apak has contributed to several recent papers such as:

  • "Methods to evaluate the scavenging activity of antioxidants toward reactive oxygen and nitrogen species (IUPAC Technical Report)", 2021, published in Pure and Applied Chemistry
  • "Biomarkers of Oxidative Stress and Antioxidant Defense", 2021, Journal of Pharmaceutical and Biomedical Analysis
  • "Optimization and modeling of microwave-assisted extraction of curcumin and antioxidant compounds from turmeric by using natural deep eutectic solvents", 2021, Food Chemistry
  • "Microwave-assisted extraction of antioxidant compounds from by-products of Turkish hazelnut (Corylus avellana L.) using natural deep eutectic solvents: Modeling, optimization and phenolic characterization", 2022, Food Chemistry
  • "High Quantum Yield Nitrogen-Doped Carbon Quantum Dot-Based Fluorescent Probes for Selective Sensing of 2,4,6-Trinitrotoluene", 2022, ACS Applied Nano Materials

The researcher frequently collaborates with colleagues who have coauthored many publications, including:

  • Ayşem Üzer (41 collaborations)
  • Mustafa Bener (29 collaborations)
  • Sema Demirci Çekiç (15 collaborations)
  • Esra Çapanoğlu (15 collaborations)
  • Saliha Esin Çelik (15 collaborations)

Reşat Apak's works are often published in journals such as:

  • Talanta (9 publications)
  • ACS Omega (9 publications)
  • Microchemical Journal (9 publications)
  • Microchimica Acta (7 publications)
  • Food Chemistry (6 publications)

Best Publications

  • Novel total antioxidant capacity index for dietary polyphenols and vitamins C and E, using their cupric ion reducing capability in the presence of neocuproine: CUPRAC method.

    Resat Apak;Kubilay Güçlü;Mustafa Ozyürek;Saliha Esin Karademir

  • Comparative Evaluation of Various Total Antioxidant Capacity Assays Applied to Phenolic Compounds with the CUPRAC Assay

    Reşat Apak;Kubilay Güçlü;Birsen Demirata;Mustafa Özyürek

  • Antioxidant Activity/Capacity Measurement. 1. Classification, Physicochemical Principles, Mechanisms, and Electron Transfer (ET)-Based Assays.

    Reşat Apak;Mustafa Özyürek;Kubilay Güçlü;Esra Çapanoğlu

  • Mechanism of antioxidant capacity assays and the CUPRAC (cupric ion reducing antioxidant capacity) assay

    Reşat Apak;Kubilay Güçlü;Mustafa Özyürek;Saliha Esin Çelik

  • Methods of measurement and evaluation of natural antioxidant capacity/activity (IUPAC Technical Report)

    Reşat Apak;Shela Gorinstein;Volker Böhm;Karen M. Schaich

  • The cupric ion reducing antioxidant capacity and polyphenolic content of some herbal teas

    Reşat Apak;Kubilay Güçlü;Mustafa Ozyürek;Saliha Esin Karademir

  • Biomarkers of Oxidative Stress and Antioxidant Defense

    Sema Demirci-Çekiç;Gülay Özkan;Aslı Neslihan Avan;Seda Uzunboy

  • Heavy metal cation retention by unconventional sorbents (red muds and fly ashes)

    Reşat Apak;Esma Tütem;Mehmet Hügül;Jülide Hizal

  • Adsorptive removal of chlorophenols from water by bituminous shale

    Esma Tütem;Reşat Apak;Çaǧatay F. Ünal

  • Total antioxidant capacity assay of human serum using copper(II)-neocuproine as chromogenic oxidant: the CUPRAC method.

    Reşat Apak;Kubilay Güçlü;Mustafa Ozyürek;Saliha Esin Karademir

  • Comparative evaluation of Fe(III) reducing power-based antioxidant capacity assays in the presence of phenanthroline, batho-phenanthroline, tripyridyltriazine (FRAP), and ferricyanide reagents

    Kadriye Işıl Berker;Kubilay Güçlü;İzzet Tor;Reşat Apak

  • Antioxidant Activity/Capacity Measurement. 2. Hydrogen Atom Transfer (HAT)-Based, Mixed-Mode (Electron Transfer (ET)/HAT), and Lipid Peroxidation Assays

    Reşat Apak;Mustafa Özyürek;Kubilay Güçlü;Esra Çapanoğlu

  • The main and modified CUPRAC methods of antioxidant measurement

    Mustafa Özyürek;Kubilay Güçlü;Reşat Apak

  • Modeling of copper(II) and lead(II) adsorption on kaolinite-based clay minerals individually and in the presence of humic acid.

    Jülide Hizal;Resat Apak

  • A comprehensive review of CUPRAC methodology

    Mustafa Özyürek;Kubilay Güçlü;Esma Tütem;Kevser Sözgen Başkan

  • Selective optical sensing of biothiols with Ellman's reagent: 5,5'-Dithio-bis(2-nitrobenzoic acid)-modified gold nanoparticles.

    Kubilay Güçlü;Mustafa Özyürek;Nilay Güngör;Sefa Baki

  • Spectrophotometric determination of ascorbic acid using copper(II)-neocuproine reagent in beverages and pharmaceuticals.

    Kubilay Güçlü;Kevser Sözgen;Esma Tütem;Mustafa Ozyürek

  • Development of a silver nanoparticle-based method for the antioxidant capacity measurement of polyphenols.

    Mustafa Özyürek;Nilay Güngör;Sefa Baki;Kubilay Güçlü

  • Solvent effects on the antioxidant capacity of lipophilic and hydrophilic antioxidants measured by CUPRAC, ABTS/persulphate and FRAP methods.

    Saliha Esin Çelik;Mustafa Özyürek;Kubilay Güçlü;Reşat Apak

  • Comparison of total antioxidant capacity and phenolic composition of some apple juices with combined HPLC–CUPRAC assay

    Şeyda Karaman;Esma Tütem;Kevser Sözgen Başkan;Reşat Apak

  • Modeling of Copper(II), Cadmium(II), and Lead(II) Adsorption on Red Mud

    Reşat Apak;Kubilay Güçlü;Mehmet Hulusi Turgut

Frequent Co-Authors

Kubilay Güçlü
Kubilay Güçlü Adnan Menderes University
Esra Capanoglu
Esra Capanoglu Istanbul Technical University
Shela Gorinstein
Shela Gorinstein Hebrew University of Jerusalem
John W. Finley
John W. Finley United States Department of Agriculture
Simon Trakhtenberg
Simon Trakhtenberg Kaplan Medical Center
Arzum Erdem
Arzum Erdem Ege University
Ugur Tamer
Ugur Tamer Gazi University
Volker Böhm
Volker Böhm Friedrich Schiller University Jena

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