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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 64 7911 7171 2293 1899 215 21824

James N. Demas publications per year

The chart shows the history of publications by James N. Demas between 1968 and 2018, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. James N. Demas published across 51 years, from 1968 to 2018, averaging 4.5 papers a year. Output peaked at 29 publications in 1983. 2 of the 232 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1968 to 2018. Vertical axis: number of publications, 0 to 29. Peak 29 publications in 1983. 1968: 1 publication 1969: 1 publication 1970: 2 publications 1971: 5 publications 1972: 1 publication 1973: 6 publications 1974: 2 publications 1975: 3 publications 1976: 8 publications 1977: 3 publications 1978: 2 publications 1979: 8 publications 1980: 7 publications 1981: 6 publications 1982: 3 publications 1983: 29 publications 1984: 9 publications 1985: 5 publications 1986: 7 publications 1987: 5 publications 1988: 6 publications 1989: 8 publications 1990: 9 publications 1991: 9 publications 1992: 2 publications 1993: 7 publications 1994: 3 publications 1995: 3 publications 1996: 3 publications 1997: 5 publications 1998: 3 publications 1999: 3 publications 2000: 4 publications 2001: 7 publications 2002: 4 publications 2003: 3 publications 2004: 3 publications 2005: 2 publications 2006: 2 publications 2007: 8 publications 2008: 4 publications 2009: 5 publications 2010: 1 publication 2011: 4 publications 2012: 2 publications 2013: 2 publications 2014: 0 publications 2015: 2 publications 2016: 3 publications 2017: 0 publications 2018: 2 publications
1968 2018

232 publications in total across all disciplines

View publications per year as a table
James N. Demas: publications per year, 1968 to 2018
Year Publications
1968 1
1969 1
1970 2
1971 5
1972 1
1973 6
1974 2
1975 3
1976 8
1977 3
1978 2
1979 8
1980 7
1981 6
1982 3
1983 29
1984 9
1985 5
1986 7
1987 5
1988 6
1989 8
1990 9
1991 9
1992 2
1993 7
1994 3
1995 3
1996 3
1997 5
1998 3
1999 3
2000 4
2001 7
2002 4
2003 3
2004 3
2005 2
2006 2
2007 8
2008 4
2009 5
2010 1
2011 4
2012 2
2013 2
2014 0
2015 2
2016 3
2017 0
2018 2
Total 232
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James N. Demas 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 James N. Demas sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 201–220 publications, is where this scientist sits. 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
61–80 publications 1,295+

This scientist: 215 publications — 38th percentile

38% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281 215
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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James N. Demas 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 James N. Demas sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 64–65 D-Index, is where this scientist sits. 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
40–41 D-Index 159+

This scientist: 64 D-Index — 56th percentile

56% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731 64
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

James N. Demas is affiliated with the University of Virginia in the United States. The academic profile of this researcher shows engagement mainly through their institutional association. No recent papers, co-authors, or specific publication venues have been listed in the available data.

The absence of detailed records on papers or book publications limits specific insights into the research contributions or scholarly output of James N. Demas. Similarly, there are no listed main fields or subfields of study, nor precise topics covered in their work, which restricts the ability to outline areas of scientific focus or expertise.

There are no documented awards associated with this scientist, which means there is no available information on recognitions or honors received during their career.

Since the scientist is currently living, the description remains in present tense. The provided information outlines a basic professional association without elaboration on research themes, impact, or collaboration patterns.

Best Publications

  • Measurement of photoluminescence quantum yields. Review

    Glenn A. Crosby;James N. Demas

  • Photophysics and photochemistry of oxygen sensors based on luminescent transition-metal complexes

    Elizabeth R. Carraway;J. N. Demas;B. A. DeGraff;J. R. Bacon

  • Excited State Lifetime Measurements

    J. N. Demas

  • Multi-emissive difluoroboron dibenzoylmethane polylactide exhibiting intense fluorescence and oxygen-sensitive room-temperature phosphorescence.

    Guoqing Zhang;Jianbin Chen;Sarah J. Payne;Steven E. Kooi

  • Determination of oxygen concentrations by luminescence quenching of a polymer-immobilized transition-metal complex

    J. R. Bacon;J. N. Demas

  • Versatile Room-Temperature-Phosphorescent Materials Prepared from N-Substituted Naphthalimides: Emission Enhancement and Chemical Conjugation.

    Xiaofeng Chen;Cheng Xu;Tao Wang;Cao Zhou

  • Applications of luminescent transition platinum group metal complexes to sensor technology and molecular probes

    J.N. Demas;B.A. DeGraff

  • Modeling of Luminescence Quenching-Based Sensors: Comparison of Multisite and Nonlinear Gas Solubility Models

    J. N. Demas;B. A. DeGraff;Wenying. Xu

  • Luminescence studies of pyridine .alpha.-diimine rhenium(I) tricarbonyl complexes

    LouAnn Sacksteder;Arden P. Zipp;Elizabeth A. Brown;Julie Streich

  • Luminescence quenching mechanism for microheterogeneous systems

    E. R. Carraway;J. N. Demas;B. A. DeGraff

  • An error analysis of the rapid lifetime determination method for the evaluation of single exponential decays

    Richard M. Ballew;J. N. Demas

  • Peer Reviewed: Oxygen Sensors Based on Luminescence Quenching.

    James N. Demas;B. A. DeGraff;Patricia B. Coleman

  • Long-lived, highly luminescent rhenium(I) complexes as molecular probes: intra- and intermolecular excited-state interactions

    LouAnn Sacksteder;Maria Lee;J. N. Demas;B. A. DeGraff

  • Oxygen Sensors Based on Luminescence Quenching: Interactions of Metal Complexes with the Polymer Supports

    Wenying. Xu;Robert Clayton. McDonough;Brandi. Langsdorf;J. N. Demas

  • Quantum efficiencies on transition metal complexes. II. Charge-transfer luminescence

    Unknown

  • Quenching of the electrochemiluminescence of tris(2,2'-bipyridine)ruthenium(II) by ferrocene and its potential application to quantitative DNA detection.

    Weidong Cao;Jerome P. Ferrance;James Demas;James P. Landers

  • Error analysis of the rapid lifetime determination method for double-exponential decays and new windowing schemes.

    Kristin K. Sharman;Ammasi Periasamy;Harry Ashworth;J. N. Demas

  • Energy transfer from luminescent transition metal complexes to oxygen

    Unknown

  • New photosensitizer. Tris(2,2'-bipyridine)ruthenium(II) chloride

    Arthur W. Adamson;James N. Demas

  • Aromatic difluoroboron β-diketonate complexes: effects of π-conjugation and media on optical properties.

    Songpan Xu;Ruffin E. Evans;Tiandong Liu;Guoqing Zhang

  • Design of oxygen sensors based on quenching of luminescent metal complexes : effect of ligand size on heterogeneity

    LouAnn. Sacksteder;J. N. Demas;B. A. DeGraff

  • Quantum efficiencies of transition-metal complexes. I. d-d Luminescence

    Glenn A. Crosby;James N. Demas

Frequent Co-Authors

Cassandra L. Fraser
Cassandra L. Fraser University of Virginia
Richard A. Keller
Richard A. Keller Los Alamos National Laboratory
Ming C. Wu
Ming C. Wu University of California, Berkeley
Frank V. Bright
Frank V. Bright University at Buffalo, State University of New York
Michal Sabat
Michal Sabat University of Virginia
James P. Landers
James P. Landers University of Virginia
David L. Brautigan
David L. Brautigan University of Virginia
Hangxun Xu
Hangxun Xu University of Science and Technology of China
Yi Luo
Yi Luo University of Science and Technology of China
Jun Jiang
Jun Jiang University of Science and Technology of China

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