Stoddart Mechanostereochemistry Group

 

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Stoddart Mechanostereochemistry Group
 

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Ali Coskun

coskun@northwestern.edu

Postdoctoral Fellow

Hometown: Turkey

Joined group: 2007

Left group: 2012


Education:

B.S. Middle East Technical University Ankara, Turkey (2001)
M.Sc. Middle East Technical University, Ankara, Turkey (2003) Advisor: Prof. Engin U. Akkaya
Ph.D. Middle East Technical University, Ankara, Turkey (2007) Advisor: Prof. Engin U. Akkaya
Visiting Scholar University of California, Los Angeles (2006) Advisor: Prof. Fraser Stoddart
Postdoctoral Scholar Northwestern University, Chicago, Sep,2007 - present:Prof. Fraser Stoddart

Publications:

[1] Coskun, A.; Baytekin, B. T.; Akkaya, E. U., Novel fluorescent chemosensor for anions via modulation of oxidative PET: a remarkable 25-fold enhancement of emission. Tetrahedron Lett. 2003, 44 (30), 5649-5651.

[2] Coskun, A.; Akkaya, E. U., Difluorobora-s-diazaindacene dyes as highly selective dosimetric reagents for fluoride anions. Tetrahedron Let. 2004, 45 (25), 4947-4949.

[3] Coskun, A.; Akkaya, E. U., Three-point recognition and selective fluorescence sensing of L-DOPA. Org. Lett. 2004, 6 (18), 3107-3109.

[4] Coskun, A.; Deniz, E.; Akkaya, E. U., Cation modulation of carbonyldipyrrinone (CDP) fluorescence: emission-ratiometric sensing of calcium. J. Mater. Chem. 2005, 15 (27-28), 2908-2912.

[5] Coskun, A.; Deniz, E.; Akkaya, E. U., Effective PET and ICT switching of boradiazaindacene emission: A unimolecular, emission-mode, molecular half-subtractor with reconfigurable logic gates. Org. Lett. 2005, 7 (23), 5187-5189.

[6] Coskun, A.; Akkaya, E. U., Ion sensing coupled to resonance energy transfer: A highly selective and sensitive ratiometric fluorescent chemosensor for Ag(I) by a modular approach. J. Am. Chem. Soc. 2005, 127 (30), 10464-10465.

[7] Coskun, A.; Akkaya, E. U., Signal ratio amplification via modulation of resonance energy transfer: Proof of principle in an emission ratiometric Hg(II) sensor. J. Am. Chem. Soc. 2006, 128 (45), 14474-14475.

[8] Coskun, A.; Yilmaz, M. D.; Akkaya, E. U., An acenaphthopyrrolone-dipicolylamine derivative as a selective and sensitive chemosensor for group IIB cations. Tetrahedron Lett. 2006, 47 (22), 3689-3691.

[9] Coskun, A.; Deniz, E.; Akkaya, E. U., A sensitive fluorescent chemosensor for anions based on a styryl-boradiazaindacene framework. Tetrahedron Lett. 2007, 48, 5359-5361.

[10] Coskun, A.; Yilmaz, M. D.; Akkaya, E. U., Bis(2-pyridyl)-substituted boratriazaindacene as an NIR-emitting chemosensor for Hg(II). Org. Lett. 2007, 9 (4), 607-609. (Highlighted as one of the most cited Organic Letters article in 2007)

[11] Coskun, A.; Saha, S.; Aprahamian, I.; Stoddart, J. F., A reverse donor-acceptor bistable [2]Catenane. Org. Lett. 2008, 10 (15), 3187-3190.

[12] Patel, K.; Angelos, S.; Dichtel, W. R.; Coskun, A.; Yang, Y. W.; Zink, J. I.; Stoddart, J. F., Enzyme-responsive snap-top covered silica nanocontainers. J. Am. Chem. Soc. 2008, 130 (8), 2382-2383.

[13] Coskun, A.; Friedman, D. C.; Li, H.; Patel, K.; Khatib, H. A.; Stoddart, J. F., A Light-Gated STOP-GO Molecular Shuttle, J. Am. Chem. Soc., 2009, 131, 2493–2495.

[14] Klajn, R.; Fang, L.; Coskun, A.; Olson, M. A.; Wesson, P. J.; Stoddart, J. F.; Grzybowski, B. A. Metal Nanoparticles Functionalized with Molecular and Supramolecular Switches, J. Am. Chem. Soc., 2009, 131, 4233-4235.

[15]Guliyev, R.; Coskun, A. ;Akkaya, E. U.,Design Strategies for Ratiometric Chemosensors: Modulation of Excitation Energy Transfer at the Energy Donor Site, J. Am. Chem. Soc., 2009, 131, 9007–9013.

[16] Olson, M. A.; Coskun, A.; Klajn, R.; Fang, L.; Dey, S. K.; Browne, K.; Gryzbowski, B. A.; Stoddart, J. F., Assembly of Polygonal Nanoparticle Cluster Directed by Reversible Noncovalent Bonding Interactions, Nano Lett., 2009, 9, 3185–3190.

[17] Klajn, R.; Olson, M. A.; Wesson, P. J.; Fang, L.; Coskun, A; Trabolsi, A.; Stoddart, J. F.; Grzybowski, B. A., Dynamic hook-and-eye nanoparticle sponges, Nature Chem., 2009, 1, 733-738.

[18] Coskun, A.; Klajn, R.; Trabolsi, A.; Fang, L.; Olson, M. A.; Wesson, P. J.; Dey, S. K.; Grzybowski, B. A.; Stoddart, J. F., Molecular-Mechanical Switching at the Metal Nanoparticle-Solvent Interface, J. Am. Chem. Soc., 2010, 132, 4310-4320.Link

[19] Olson, M. A.; Coskun, A.; Fang, L.; Basuray, A. N.; Stoddart, J. F., Polycatenation Under Thermodynamic Control, Angew. Chem. Int. Ed., 2010, 49, 3151-3156.Link

[20] Spruell, J. M.; Coskun, A.; Friedman, D. C.; Forgan, R. S.; Sarjeant, A. A.; Trabolsi, A.; Fahrenbach, A. C.; Barin, G.; Paxton, W. F.; Dey, S. K.; Olson, M. A.; Benítez, D.; Tkatchouk, E.; Colvin, M. T.; Carmielli, R.; Caldwell, S. T.; Rosair, G. M.; Hewage, S. G.; Duclairoir, F.; Seymour, J. L.; Slawin, A. M. Z.; Goddard III, W. A.; Wasielewski, M. R.; Cooke, G; Stoddart, J. F. “Highly Stable TTF Radical Dimers in [3]Catenanes,” Nature Chem., 2010, 2, 870-879.

[21] Basu, S.; Coskun, A.; Friedman, D. C.; Olson, M. A.; etc. ; Stoddart, J. F. “Donor Acceptor Oligorotaxanes Made to Order,” Chem. Eur. J., 2010, DOI: 10.1002/chem.201002152.

[22] Stephenson, R. M.;Wang, X.; Coskun, A.; Stoddart, J. F.; Zink, J. I. “Excited State Distortions Caused by Photochemical Electron Transfer in a Donor-Acceptor [2]Rotaxane,” Phys. Chem. Chem. Phys., 2010, In Press.

[23] Han, S.; Wei, Y.; Valente, C.; Forgan, R. S.; Gassenmith, J. J.; Smaldone, R. A.; Nakanishi, H.; Coskun, A.; Stoddart, J. F.; Grzybowski, B. A. “Imprinting Chemical and Responsive Micropatterns into Metal-Organic Frameworks,” Angew. Chem. Int. Ed., 2010, In Press.

[24] Barin, G; Coskun, A.; Friedman, D. C.; Olson, M. A.; Colvin, M. T.; Carmielli, R.; Dey, S. K.; Bozdemir, O. A.; Wasielewski, M. R.; Stoddart, J. F. “A Multistate Switchable [3]Rotaxane,” Chem. Eur. J., 2010, DOI: 10.1002/chem.201001822.

[25] Han, S.; Wei, Y.; Valente, C.; Lagzi, I.; Gassenmith, J. J.; Coskun, A.; Stoddart, J. F.; Grzybowski, B. A. “Chromatography in a Single Metal-Organic Framework (MOF) Crystal,” J. Am. Chem. Soc., 2010, In Press.

Message:

I was born in Isparta, which is located in the southern part of Turkey, and is known for its hand-made carpets and beautiful rose gardens. My interest in chemistry started during my high school years, and afterwards I joined to the Middle East Technical University as an undergraduate student in 1996. After graduation, I got both my M.Sc. and Ph.D. degrees from the same university under the supervision of Prof. Dr. Engin U. Akkaya. During my graduate studies, I mainly focused on the development of fluorescent chemosensors, molecular logic gates and energy transfer cassettes, as well as on the design of new fluorophores. During my Ph.D., I received a scholarship from the Scientific Research Council of Turkey (TUBITAK) to work in the Stoddart group at UCLA. Shortly after joining the group as a postdoc, we moved to Northwestern University. Nowadays, I am really excited about being here and working on chemistry of the mechanical bond. My main research interests are (i)molecular electronics, (ii) metal nanoparticle assemblies, (iii) Donor-Acceptor oligorotaxanes and polycatenanes, (iv) metal-organic frameworks. Outside the lab, I am trying to learn about this beautiful part of the U.S., watching NBA games, playing soccer, and enjoying my time in Chicago (except winter).

 

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