Associate Professor, Chemistry Department
Phone: 814-871-7647
Office: Z 412

  • Courses Taught
  • Educational History
  • Professional Societies
  • Publications
  • Scholarship/Research
  • Service

Courses Taught

  • Introduction to Organic and Biochemistry (CHEM 102)
  • Physiological Chemistry (CHEM 105)
  • General Chemistry I and II (CHEM 111 and 112)
  • General Chemistry I and II Laboratories (CHEM 114 and 115)
  • Physical Chemistry I and II (CHEM 331 and 334)
  • Physical Chemistry I and II Laboratories (CHEM 332 and 335)
  • Undergraduate Research (CHEM 380 and 381)

Educational History

  • Ph.D. in Physical Chemistry 2009, University of Rochester
  • M.S. in Chemistry 2006, University of Rochester
  • B.S. in Chemistry 2004, SUNY College at Fredonia

Professional Societies

  • American Chemical Society (ACS), Member Since 2004
  • ACS National Younger Chemists Committee, Associate
  • ACS Erie Local Section, Secretary
  • ACS Erie Local Section, Webmaster (
  • ACS Erie Local Section, Newsletter Editor


Cogan, N. M. B.; Bowerman, C. J.; Nogaj, L. J.; Nilsson, B. L.; Krauss, T. D. Selective Suspension of Single-Walled Carbon Nanotubes using beta-Sheet Polypeptides. J. Phys. Chem. C 2014, 118(11), 5935–5944.

Nogaj, L. J.; Huang, L.; Krauss, T. D. Semiconductor Carbon Nanotube Optics. In Handbook of  Carbon Nano Materials; D'Souza, F., Kadish, K. M., Eds.; World Scientific Series on Carbon Nanoscience; World Scientific Publishing Co.: Hackensack, NJ, 2012; pp 245-286.

Lee, A. J.; Wang, X.; Carlson (Nogaj), L. J.; Smyder, J. A.; Loesch, B.; Tu, X.; Zheng, M.; Krauss, T. D. Bright Fluorescence from Individual Single-Walled Carbon Nanotubes. Nano Lett. 2011, 11(4), 1636–1640.

Leach, K. E.; Pedrosa, H. N.; Carlson (Nogaj), L. J.; Krauss, T. D. Fluorescent Carbon Nanotubes in Cross-Linked Micelles. Chem. Mater. 2009, 21, 436–438.

Haggenmueller, R.; Rahatekar, S. S.; Fagan, J. A.; Chun, J.; Becker, M. L.; Naik, R. R.; Krauss, T.; Carlson (Nogaj), L.; Kadla, J. F.; Trulove, P. C.; Fox, D. F.; DeLong, H. C.; Fang, Z.; Kelley, S. O.; Gilman, J. W. Comparison of the Quality of Aqueous Dispersions of Single Wall Carbon Nanotubes Using Surfactants and Biomolecules. Langmuir 2008, 24(9), 5070–5078.

Carlson (Nogaj), L. J.; Krauss, T. D. Photophysics of Individual Single-Walled Carbon Nanotubes. Acc. Chem. Res. 2008, 41(2), 235–243.

Carlson (Nogaj), L. J.; Maccagnano, S. E.; Zheng, M.; Silcox, J.; Krauss, T. D. Fluorescence Efficiency of Individual Carbon Nanotubes, Nano Lett. 2007, 7(12), 3698–3703.


My research interests involve studying the fundamental optical properties of nanoscale materials, with the goal of working toward their integration into devices and applications.  Specifically, we focus on understanding the fluorescent properties of single-walled carbon nanotubes (SWNTs).  SWNTs are hollow cylinders of graphene (Figure 1) that display incredible strength, fascinating electronic properties, and unique optical features.  Interestingly, the majority of SWNTs display size-tunable and highly stable fluorescence in the near infrared, which makes them especially relevant for biological imaging and sensing applications.

Figure 1.  Depiction of an SWNT as it is
hypothetically rolled up from a graphene sheet.

SWNTs are synthesized as mixtures of particles having different structures, and therefore, optical properties.  The study of carbon nanotube fluorescence is complicated by this heterogeneity and the development of straightforward separation techniques is an area of active research.  Further, the integration of SWNTs into devices has been hindered because they suffer from defect sites that result during sample processing.  Because defect sites can strongly alter the intrinsic behavior of carbon nanotubes, additional research is needed to clarify their exact role on SWNT fluorescence.  Research in my laboratory addresses both of these challenges using a combination of chromatographic techniques and optical spectroscopy.


Service on GU Committees
  • GU Pre-Professional Applicant Review Committee, Chair (2013-present)
  • GU Faculty Senate (2012-present)
  • GU MCHPS Safety Committee (2011-present)
  • GU University Risk Management Committee (2011-2014)
  • GU University Comprehensive Compliance Committee (2011-2012)

Community Outreach

  • National Science Foundation National NanoDays Co-Cordinator (2012, 2014-present)
  • Upward Bound Summer Program Chemistry and Science Writing Instructor (2011-present)
  • GU Annual GIVE Day (2010-present)
  • Girls' World Expo Science Presenter (2012)
  • ACS National Chemistry Week Volunteer (2011)
  • Ongoing Chemistry Demonstrations and Presentations at Area K-12 Schools