Members

IMG_2224Prof. Dorthe M. Eisele

Principal Investigator

Email: Eisele(at)ccny.cuny.edu | CCNY Faculty Page

Office: Center for Discovery and Innovation (CDI), Room 4-370

Phone:212-650-8361

Division of Science

Dr. Eisele was born and educated in Germany and grew up in Berlin. She studied physics at the Technical University of Berlin, Germany, and finished an external Diploma Thesis (comparable with a US Master Thesis) from the Physikalisch Technische Bundesanstalt (German Institute of Standards), Germany, at the Berlin Electron Storage Ring Society for Synchrotron Radiation II (known as BESSY II), in collaboration with the Lawrence Livermore National Laboratory (LLNL), USA.

In Dec. 2009 she received her doctoral degree, Dr. rer. nat. (PhD equivalent), in experimental physics from the Physics Department (group of Prof. Juergen P. Rabe) of the Humboldt University Berlin, Germany, in close collaboration with Prof. David A. Vanden Bout from the Chemistry Department of University of Texas at Austin, USA. From March 2011 till August 2014, she was a Postdoctoral Associate at the Center for Excitonics   of the Massachusetts Institute of Technology (MIT), where she conducted her research projects in the groups of Prof. Moungi G. Bawendi and Prof. Keith A. Nelson. Throughout her career she initiated fruitful and long-term collaborations such as with research groups of Klaus Muellen (Max Planck Institute for Polymer Research, Germany), Jasper Knoester (Physics Department, University of Groningen, The Netherlands), Daniela Nicastro (Biology Department, University of Brandeis, USA), Robert Silbey† (Chemistry Department, MIT, USA), Andrei Tokmakoff (Chemistry Department, University of Chicago, USA).

In 2011 Dr. Eisele received the prestigious Feodor-Lynen-Fellowship award and became a member of the Alexander-von-Humboldt-Foundation.

In September 2014, she joined The City College of New York (CCNY) of The City University of New York (CUNY) as an Assistant Professor
of Chemistry.


Postdoctoral Researchers

Christopher W. Leishman, PhD

Email: cleishman(at)ccny.cuny.edu

Dr. Leishman grew up in Albuquerque, New Mexico. He studied physics and applied math at the University of New Mexico, where he became fascinated with quantum dynamics in biological energy transport processes. After graduating, he moved to Oregon, earning an additional bachelor’s degree (Chemistry) at Portland State University while performing computational modeling of sensitizing dyes and photoactive polymers for solar cells in the research group of Prof. Carl Wamser. In July 2016, he earned his Ph.D. in physical chemistry from the Department of Chemistry of Washington State University in Pullman, Washington, under the mentorship of Prof. Jeanne L. McHale. In his doctoral research, he coordinated resonance Raman spectroscopy with nanoscale imaging to distill insights into relationships between structure and optical properties of supramolecular porphyrin aggregates. He published the findings from these investigations in an interlinked series of three first author papers.

Dr. Leishman joined Prof. Eisele’s research group as a postdoctoral researcher in September 2016 at the City College of New York, where he is working on structural and optical studies of energy and charge transfer dynamics in composite nanoscale systems including hybrid excitonic and plasmonic materials. He is driven by a vision to engage cutting-edge optical spectroscopy, microscopy and theoretical investigations to enable future advances in sustainable energy.

 

Three Selected Publications:

1. Leishman, C. W.; McHale, J. L. Light-Harvesting Properties and Morphology of Porphyrin Nanostructures Depend on Ionic Species Inducing Aggregation. The Journal of Physical Chemistry C 2015, 119, 28167–28181.DOI: 10.1021/acs.jpcc.5b08849

2. Leishman, C. W.; McHale, J. L. Illuminating Excitonic Structure in Ion-Dependent Porphyrin Aggregates with Solution Phase and Single-Particle Resonance Raman Spectroscopy. The Journal of Physical Chemistry C 2016, 120, 12783–12795. DOI: 10.1021/acs.jpcc.6b00867

3. Leishman, C. W.; McHale, J. L. Morphologically-Determined Excitonic Properties of Porphyrin Aggregates in Alcohols with Variable Acidity. The Journal of Physical Chemistry C 2016. DOI: 10.1021/acs.jpcc.6b04998

graphic1-p1b3ofoab81cp092vag1q06li8Nikunjkumar Visaveliya, PhD

Email: nvisaveliya(at)ccny.cuny.edu

Dr. Nikunjkumar Visaveliya was born in Devkigalol, India. He earned his B.Sc. in Chemistry and M.Sc. in Organic Chemistry both at the Sardar Patel University, Gujarat, India. After completing his M.Sc., he moved to National Chemical Laboratory, Pune, India where he worked as a research project assistant under Dr. BLV Prasad on the synthesis of different bio-surfactants and their applications. He then joined Prof. J. Michael Koehler’s group at the Technical University of Ilmenau, Germany in order to obtain his PhD. In Prof. Koehler’s group, Nikunjkumar gained extensive expertise in state of the art microfluidic nanosynthesis. He applied these microfluidic techniques to synthesize different types of multi-functional nanoparticles (organic as well as inorganic) with a wide variation of parameters such as size, shape, assembly, and composition for different functional applications. During his PhD career, Nikunjkumar published 17 manuscripts in peer reviewed journals, of which he is first author of 11 publications.

In November 2016, Dr. Visaveliya joined Prof. Eisele’s research group at the City College of New York as a postdoctoral researcher. His research interests concern nanomaterials for light-matter interactions. Specifically, he is interested in utilizing microfluidics for supramolecular self-assembly as well as for polymeric nanomaterials and novel nanocomposites for optical and biomedical applications. Nikunjkumar is passionate about pushing microfluidics forward to new frontiers.

Three Selected Publications:

1. N. Visaveliya and J. M. Köhler;Microfluidic Assisted Synthesis of Multipurpose Polymer Nanoassembly Particles for Fluorescence, LSPR, and SERS Activities”, Small, 11, 6435–6443 (2015) (Inside Cover Article).

2. N. Visaveliya, S. Lenke and J. M. Köhler; “Composite Sensor Particles for Tuned SERS Sensing: Microfluidic Synthesis, Properties and Applications”, ACS Appl. Mater. Interfaces, 7 (20), 10742-10754 (2015).

3. N. Visaveliya and J. M. Köhler; “Single-Step Microfluidic Synthesis of Various Non-Spherical Polymer Nanoparticles via in-Situ Assembling: Dominating Role of Polyelectrolytes Molecules”, ACS Appl. Mater. Interfaces, 6 (14), 11254-11264 (2014).


Graduate Students

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Sarah Belh

Email: sarahjbelh(at)gmail.com

Sarah grew up in Franklinville, NJ. In May of 2014, Sarah got her bachelor’s degree from Rutgers University at Camden with a major in chemistry and minors in mathematics and religion. While there she worked, under the supervision of Prof. George Kumi Ph.D. in the chemistry department, to develop procedure to solve problems with the use and reuse of microfluidics devices for the study of environmental conditions’ effect on calcium oxalate morphology. During the summer of 2013, while working with Dr. Kumi, she participated in the NASA funded New Jersey Space Grant Consortium, a fellowship for undergraduate researchers in New Jersey.

In September 2014, she entered the Ph.D. program in chemistry in the analytical sub-discipline at the City University of New York (CUNY). Since January 2015, she is working at CUNY, campus The City College of New York under the supervision of Prof. Dӧrthe Eisele, Dr. rer.nat. Sarah is excited about self-assembling processes. For her dissertation she is interested in understanding the complex self-assembling process of supramolecular aggregates. Sarah is our Group Seminar Chair and wet-lab Safety Officer.

Selected Publications and Presentations:

Belh, S., Manandhar A., Huffman G., Ng K., Chowdhury A., Yehya N., Patel M., Des Georges A., Loverde S., and Eisele D.M., Counterion interactions in supramolecular self-assembly. Poster session presented at: 252nd American Chemical Society National Meeting & Exposition, August 21-25, 2016, Philadelphia, PA.

Belh, S., Manandhar A., Huffman G., Ng K., Chowdhury A., Yehya N., Patel M., Des Georges A., Loverde S., and Eisele D.M., The Counterion’s Role in Supramolecular Self-Assembly. Poster session presented at: 44th ACS Middle Atlantic Regional Meeting (MARM), June 9–12, 2016, College of Mount Saint Vincent, Riverdale, NY.

Belh, S., Manandhar A., Huffman G., Ng K., Chowdhury A., Yehya N., Patel M., Des Georges A., Loverde S., and Eisele D.M., The Counterion’s Role in Supramolecular Self-assembly. Oral Presentation given at: 251st American Chemical Society National Meeting & Exposition, August 21-25, 2016, Philadelphia, PA.

Kara Ng

Email: kng.kara(at)gmail.com

Kara grew up in Brooklyn, NY. In February of 2015, she received her bachelor’s degree from The City College of New York with a major in environmental chemistry. While there, she worked under the supervision of Prof. Urs Jans Ph.D. in the chemistry department. Her undergraduate research was on investigating the anaerobic degradation of flame retardants. In the summer of 2014, Kara received a fellowship from The Division of Science to work with the U.S. Geological Survey at The New Jersey Water Science Center. During her fellowship, Kara researched the occurrence and distribution of mercury along New Jersey coastal sediments.

Kara’s interest in interdisciplinary fields of chemistry and environmental science led her to pursue graduate research. In September 2015, Kara entered the Ph.D. program in chemistry at the City University of New York (CUNY) under the supervision of Prof. Dӧrthe Eisele, Dr. rer.nat. Kara investigates the fundamental science of energy transfer in novel nanomaterials with the goal of guiding rational design of innovative next-generation solar cells. Her dissertation is focused on understanding the subtle characteristics of energy transfer mechanisms in novel nanomaterials such as supramolecular aggregates and hybrid systems of supramolecular aggregates and inorganic materials.

Selected Publications and Presentations:

Meuhlethaler, C., Ng, K., Gueissaz, L., Leona, M., Lombardi, J.R., Raman and SERS characterization of solvent dyes: An example of shoe polish analysis. Dyes and Pigments 137: 539-552 (2017).

Ng, K., Belh, S., Chowdury, A., Yehya, N., Patel, M., Huffman, G., Eisele, D.M. Near-field scanning optical microscopy investigations of individual supramolecular light-harvesting nanotubes. Poster session presented at: 252nd American Chemical Society National Meeting & Exposition, August 21-25, 2016, Philadelphia, PA.

Ng, K., Szabo, Z., Reilly, P.A., Barringer, J.L., and Smalling, K.L., An assessment of mercury in estuarine sediment and tissue in Southern New Jersey using public domain data. Marine Pollution Bulletin 107: 22-35 (2016).


Research Assistants

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Arafat Chowdhury

Email: arafat3635(at)gmail.com

Arafat grew up in Queens, NYC. In September 2011, Arafat began his career as an undergraduate at the City College of New York. Arafat found his passion lies in biochemistry but also loved psychology, thus deciding to double major in biochemistry and psychology and a minor in mathematics. In Spring 2012, Arafat became a semi-finalist with his group, Sensing Water, for the Zahn Competition. An engineering project where he and his group developed a prototype device that could measure the amount of water being used at a faucet and then transfer the data to an online system where it would be analyzed for various purposes. In December 2014, he became a member of Dr. Eisele’s research group where he is working on the study of the self-assembly process. Arafat has been awarded the prestigious CCNY STEM Career Development Institute Fellowship for his Summer 2015 research. In February 2016, he was also awarded a stipend from CUNY’s Research Foundation to support his undergraduate research project. In September 2016, he began working as a research assistant for the Eisele group, continuing work on the research projects and supporting the graduate students with preparing manuscripts. Arafat is also our group secretary and social organizer.


Undergraduates

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Nicolás (Nico) Yehya

Email: nicoyehya(at)gmail.com

Nico grew up in Brooklyn, NYC. In September 2014, Nico began his career as an undergraduate with a major in physics with a concentration in applied physical and material science at the Macaulay Honors College at the City College of New York. In April 2015, he joined Dr. Eisele’s research group where his first project involved working on the stabilization of supramolecular aggregate samples. Nico won the NYC Louis Stokes Alliance Summer 2015 Research Program Fellowship. Nico is our website manager.

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Grayson (Gray) Huffman

Email: gray.huffman(at)gmail.com

Grayson was born in Roanoke, Va. He graduated from the University of Virginia, where he held the distinction of being an Echols Scholar, with a double major in English and foreign affairs.

Beginning of 2015, after working in both the design and education industries, Grayson enrolled in CCNY’s biomedical engineering and physics programs.

In March 2015, he joined the Eisele Group, where he is working on stabilizing supramolecular aggregate samples at low temperatures. Grayson won a 2015/2016 City College Fellowship, which are awarded to talented students who aspire to enter Ph.D. programs in preparation for careers in research and education. In August 2015, Gray was also awarded a stipend from CUNY’s Research Foundation to support his undergraduate research project.
Grayson is our supply manager.

Nelson Tobar

Email: fernandotobarq(at)outlook.com

Nelson was born in Guayaquil, Ecuador and moved to Queens, NYC at the age of 15. In December 2015 Nelson received his associate’s degree in science from CUNY Queensborough Community College where he did research involving carbon nanotubes for two years. Nelson enrolled at CUNY City College in as a chemistry major in january 2016. He joined Dr. Eisele’s research group in spring 2016. Nelson is currently working on the synthesis of a dye- single walled carbon nanotube and won the 2016 Opportunities in Research and Creative Arts (ORCA) program award. Nelson is our Supply Officer.

Saad Ahmed

Email: saahmed101997(at)gmail.com

Saad grew up in Queens, NYC. Saad began his undergraduate career at the City College of New York in September 2015 pursuing a major in Biochemistry. Saad joined the Eisele group in April 2016. In Fall of 2015, Saad joined the CCNY chapter of Engineers without Borders and contributed to the adoption of their new project in Nicaragua. In Spring 2016, Saad was elected Event Coordinator of the CCNY chapter of Engineers without Borders.

Michael H. Ross

Email: mikehross(at)gmail.com

Michael was raised in Billerica, MA.  He received a B.S. in psychology with minors in sociology and anthropology from UMass Amherst in 2010. He worked in the field with mental health organizations in the greater Boston area and Brooklyn.  As an Eagle Scout, he is interested in how things work and found his questions were more fundamental than even those found in psychology.  He is currently working toward a B.S in physics with a focus on material science at the City College of New York.  Michael joined Dr. Eisele’s research group in October of 2016 where he assists in lab work.

Dean Lahana

Email: deanlahana(at)gmail.com

Dean was born and raised in Queens, New York. His first undergraduate degree was in economics from CUNY Queens College, and he is now working on a second undergraduate degree in chemistry at CUNY City College. He plans to study CRISPR technologies in graduate school. Dean joined the Eisele group in September, 2016, where he assists researchers in the lab.

Abe Whitmeyer

Email: abewhitmeyer(at)gmail.com

Abe was born and raised in New York City. In fall 2015, Abe started his undergraduate studies at the Macaulay Honors College at the City College of New York as a physics major with a minor in computer science. In November 2016, he joined the Eisele research group, where he assists the researchers with lab work.

 


“Enjoy the ride!