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Prof. Stefan Hecht, Ph.D.
Prof. Stefan Hecht, Ph.D.

Phone: +49 (0)30 2093-7365
Fax: +49 (0)30 2093-6940
sh@chemie.hu-berlin.de
Contact Us
Laboratory of Organic Chemistry and Functional Materials
Department of Chemistry
Humboldt-Universität zu Berlin
Brook-Taylor-Str. 2
12489 Berlin
Germany

Administrative Assistant:
Daniela Voigtländer
Phone: +49 (0)30 2093-7308
Fax: +49 (0)30 2093-6940
Email

Journals (peer review only)

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[61]
M. Ostermeier, M.-A. Berlin, R. Meudtner, S. Demeshko, F. Meyer, C. Limberg,* S. Hecht*: "Complexes of Click-Derived Bistriazolylpyridines: Remarkable Electronic Influence of Remote Substituents on Thermodynamic Stability as well as Electronic and Magnetic Properties" Chem. Eur. J. in press.

[60]
R. S. Stoll, S. Hecht*: "Artificial Light-Gated Catalyst Systems" Angew. Chem. 2010, 122, 5176-5200; Angew. Chem. Int. Ed. 2010, 49, 5054-5075.

[59]
M.-M. Russew, S. Hecht*: "Photoswitches: From Molecules to Materials"  Adv. Mater. 2010, 22, published online DOI: 10.1002/adma.200904102.

[58]
R. Schmidt, S. Hagen, D. Brete, R. Carley, C. Gahl, J. Dokic, P. Saalfrank, S. Hecht, P. Tegeder,* M. Weinelt*: "On the electronic and geometrical structure of the trans- and cis-isomer of tetra-tert-butyl-azobenzene on Au(111)" Phys. Chem. Chem. Phys. 2010, 12, 4488-4497.

[57]
F. Leyssner, S. Hagen, L. Óvári, J. Dokic, P. Saalfrank, M. V. Peters, S. Hecht, T. Klamroth, P. Tegeder*: "Photoisomerization Ability of Molecular Switches Adsorbed on Au(111): Comparison Between Azobenzene and Stilbene Derivatives"  J. Phys. Chem. C 2010, 114, 1231-1239.

[56]
S. Hartwig, J. Schwarz, S. Hecht*: "From Peptides to their Alternating Ester-Urea Analogues: Synthesis and Influence of Hydrogen-Bonding Motif and Stereochemistry on Aggregation"  J. Org. Chem. 2010, 75, 772-782.

[55]
S. Hartwig, S. Hecht*: "Polypseudopeptides with Variable Stereochemistry: Synthesis via Click-Chemistry, Postfunctionalization, and Conformational Behavior in Solution" Macromolecules 2010, 43, 242–248.

[54]
S. Hartwig, M. M. Nguyen, S. Hecht*: "Exponential growth of functional poly(glutamic acid) dendrimers with variable stereochemistry" Polym. Chem. 2010, 1, 69-71 (inside front cover).

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[53]
C. Bombis, F. Ample, L. Lafferentz, H. Yu, S. Hecht, C. Joachim, L. Grill*: "Single molecular wires connecting metallic and insulating surface areas" Angew. Chem. 2009, 121, 10151-10155; Angew. Chem. Int. Ed. 2009, 48, 9966-9970.

[52]
R. S. Stoll, S.Hecht*: "Immobilization of a Photoswitchable Piperidine Base" Org. Lett. 2009, 11, 4790-4793.

[51]
J. Dokić, M. Gothe, J. Wirth, M. V. Peters, J. Schwarz, S. Hecht*, P. Saalfrank*: "Quantum Chemical Investigation of Thermal Cis-to-Trans Isomerization of Azobenzene Derivatives: Substituent Effects, Solvent Effects and Comparison to Experimental Data"  J. Phys. Chem. A 2009, 113, 6763-6773.

[50]
L. Piot, R. M. Meudtner, T. El Malah, S. Hecht*, P. Samori*: "Modulating Large Area Self-Assembly at the Liquid-Solid Interface via pH-mediated Conformational Switching" Chem., Eur. J. 2009, 15, 4788-4792.

[49]
L. Lafferentz, F. Ample, H. Yu, S. Hecht*, C. Joachim, L. Grill*: "Conductance of a Single Conjugated Polymer as a Continuous Function of Its Length" Science 2009, 323, 1193-1197.

[48]
R. S. Stoll, M. V. Peters, A. Kühn, S. Heiles, R. Goddard, M. Bühl,* C. M. Thiele,* S. Hecht*: "Photoswitchable Catalysts: Correlating Structure and Conformational Dynamics with Reactivity by a Combined Experimental and Computational Approach"  J. Am. Chem. Soc. 2009, 131, 357-367.

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[47]
C. Dri, M. V. Peters, J. Schwarz, S. Hecht*, L. Grill*: "Spatial periodicity in molecular switching"  Nature Nanotechnology 2008, 3, 649-653.

[46]
L. Óvári, J. Schwarz, M. V. Peters, S. Hecht, M. Wolf, P. Tegeder*: "Reversible Isomerization of an Azobenzene Derivative Adsorbed on Au(111): Analysis Using Vibrational Spectroscopy"  Int. J. Mass Spectrom. 2008, 277, 223-228.

[45]
S. Hagen, P. Kate, M. V. Peters, S. Hecht, M. Wolf, P. Tegeder*: "Kinetic analysis of the photochemically and thermally induced of an azobenzene derivative on Au(111) probed by two-photon photoemission"  Appl. Phys. A 2008, 93, 253-260.

[44]
S. Solvanathan, M. V. Peters, J. Schwarz, S. Hecht*, L. Grill*: "Formation and manipulation of discrete supramolecular azobenzene assemblies"  Appl. Phys. A 2008, 93, 247-252.

[43]
M. V. Peters, R. S. Stoll, A. Kühn, S. Hecht*: "Photoswitching of Basicity"  Angew. Chem. 2008, 120, 6056-6060; Angew. Chem. Int. Ed. 2008, 47, 5968-5972.

[42]
M. Alemani, S. Solvanathan, F. Ample, M. V. Peters, K.-H. Rieder, F. Moresco, C. Joachim, S. Hecht, L. Grill*: "Adsorption and switching properties of azobenzene derivatives on different noble metal surfaces: Au(111), Cu(111), and Au(100)"  J. Phys. Chem. C 2008, 112, 10509-10514.

[41]
R. M. Meudtner, S. Hecht*: "Helicity Inversion in Novel Responsive Foldamers Induced by Achiral Halide Anions"  Angew. Chem. 2008, 120, 5004-5008; Angew. Chem. Int. Ed. 2008, 47, 4926-4930.

[40]
M. A. Balbo Block, S. Hecht*: "Poly(propylene oxide)-Poly(phenylene ethynylene) Block and Graft Copolymers"  Macromolecules 2008, 41, 3219-3227.

[39]
R. M. Meudtner, S. Hecht*: "Responsive Backbones Based on Poly[(1,2,3-triazol-4-yl-1,3-pyridine)-alt-(1,2,3-triazol-1-yl-1,3-phenylene)]s: From Helically Folding Polymers to Metallosupramolecularly Crosslinked Gels"  Macromol. Rapid Commun. 2008, 29, 347-351.

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[38]
L. Grill*, M. Alemani, K.-H. Rieder, F. Moresco, G. Rapenne, C. Joachim, M. V. Peters, S. Hecht: "Study and Manipulation of Single Functionalized Molecules by Low Temperature STM"  J. Scann. Probe Microsc. 2007, 2, 19-23.

[37]
R. M. Meudtner, M. Ostermeier, R. Goddard, C. Limberg,* S. Hecht*: "Multifunctional “Clickates” as Versatile Extended Heteroaromatic Building Blocks: Efficient Synthesis via Click Chemistry, Conformational Preferences, and Metal Coordination"  Chem., Eur. J. 2007, 13, 9834-9840.

[36]
L. Grill*, M. Dyer, L. Lafferentz, M. Persson, M. V. Peters, S. Hecht*: "Construction of covalently bound molecular nano-architectures"  Nature Nanotechnology 2007, 2, 687-691. Cover

[35]
P. Tegeder*, S. Hagen, F. Leyßner, M. V. Peters, S. Hecht, T. Klamroth, P. Saalfrank, M. Wolf: "Electronic structure of the molecular switch tetra-tert-butyl-azobenzene adsorbed on Ag(111)"  Appl. Phys. A 2007, 88, 465-472.

[34]
J. van Esch*, H. Valkenier, S. Hartwig, S. Hecht*: "Foldamers at Interfaces" in "Foldamers: Structure, Properties, and Applications" (Eds.: S. Hecht, I. Huc), Wiley-VCH, Weinheim, 2007, pp. 403-426.

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[33]
M. Alemani, M. V. Peters, S. Hecht,* K.-H. Rieder, F. Moresco, L. Grill*: "Electric Field-Induced Isomerization of Azobenzene by STM"  J. Am. Chem. Soc. 2006, 128, 14446-14447.

[32]
M. V. Peters, R. Goddard, S. Hecht*: "Synthesis and Characterization of Azobenzene-Confined Porphyrins"  J. Org. Chem. 2006, 71, 7846-7849.

[31]
M. V. Peters, R. S. Stoll, R. Goddard, G. Buth, S. Hecht*: "On the Illusive Nature of ortho-Formylazobenzenes: Exploiting the Nucleophilicity of the Azo Group for Cyclization to Indazole Derivatives"  J. Org. Chem. 2006, 71, 7840-7845.

[30]
A. Khan, S. Hecht*: "Towards Photocontrolling the Helix-Coil Transition in Foldamers: Synthesis and Photoresponsive Behavior of Azobenzene-Core Amphiphilic Oligo(meta-phenylene ethynylene)s"  Chem., Eur. J. 2006, 12, 4764-4774.

[29]
R. S. Stoll, N. Severin, J. P. Rabe,* S. Hecht*: "Synthesis of a Novel Chiral Squaraine Dye and its Unique Aggregation Behavior in Solution and in Self-Assembled Monolayers"  Adv. Mater. 2006, 18, 1271-1275.

[28]
A. Khan, C. Kaiser, S. Hecht*: "Prototype of a Photoswitchable Foldamer"  Angew. Chem. 2006, 118, 1912-1915; Angew. Chem., Int. Ed. 2006, 45, 1878-1881.

[27]
A. Khan, S. Hecht*: "Poly(ortho-phenylene ethynylene)s: Synthetic Accessibility and Optical Properties"  J. Polym. Sci., Part A: Polym. Chem. 2006, 44, 1619-1627.

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[26]
M. A. Balbo Block, S. Hecht*: "Wrapping Peptide Tubes – Merging Biological Self-Assembly and Polymer Synthesis"  Angew. Chem. 2005, 117, 7146-7149; Angew. Chem., Int. Ed. 2005, 44, 6986-6989.

[25]
P. Milosevic, S. Hecht*: "Design of Branched and Chiral Solvatochromic Probes: Towards Quantifying Polarity Gradients in Dendritic Macromolecules"  Org. Lett. 2005, 7, 5023-5026.

[24]
W. R. Dichtel, S. Hecht, J. M. J. Fréchet*: "Functionally Layered Dendrimers: A New Building Block and its Application to the Synthesis of Multichromophoric Light-Harvesting Systems"  Org. Lett. 2005, 7, 4451-4454.

[23]
S. Hecht*: "Construction with Macromolecules"  Materials Today 2005, 8(3), 48-55.

[22]
A. Khan, S. Müller, S. Hecht*: "Practical synthesis of an amphiphilic, non-ionic poly(para-phenyleneethynylene) derivative with a remarkable quantum yield in water"  Chem. Commun. 2005, 584-586.

[21]
S. Hecht*: "Optical Switching of Hierarchical Self-Assembly – Towards "Enlightened" Materials"  Small 2005, 1, 26-29.

[20]
M. A. Balbo Block, C. Kaiser, A. Khan, S. Hecht*: "Discrete Organic Nanotubes Based on a Combination of Covalent and Non-Covalent Approaches"  Top. Curr. Chem. 2005, 245, 89-150.

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[19]
A. Khan, S. Hecht*: "Functional Organic Nanotubes from Hollow Helical Scaffolds"  Synth. Met. 2004, 147, 37-42.

[18]
M. A. Balbo Block, S. Hecht*: "Alternating (Squaraine-Receptor) Sensory Polymers: Modular One-Pot Synthesis and Signal Transduction via Conformationally Controlled Exciton Interaction"  Macromolecules 2004, 37, 4761-4769.

[17]
A. Khan, S. Hecht*: "Microwave-assisted synthesis of lengthy and defect-free poly(m-phenyleneethynylene)s via AB’ and A2+BB’ polycondensation routes"  Chem. Commun. 2004, 300-301.

[16]
M. A. Balbo Block, A. Khan, S. Hecht*: "Avenues into the Synthesis of Illusive Poly(m-phenylene-alt-squaraine)s: Polycondensation of m-Phenylenediamines with Squaric Acid Intercepted by Intermediate Semisquaraines of Exceptionally Low Reactivity"  J. Org. Chem. 2004, 69, 184-187.

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[15]
S. Hecht*, A. Khan: "Intramolecular Crosslinking of Helical Folds: A Novel Approach to Organic Nanotubes"  Angew. Chem. 2003, 115, 6203-6206; Angew. Chem. Int. Ed. 2003, 42, 6021-6024.

[14]
S. Hecht*: "Functionalizing the Interior of Dendrimers – Synthetic Challenges and Applications"  J. Polym. Sci., Part A: Polym. Chem. 2003, 41, 1047-1058. Cover

[13]
S. Hecht*: "Welding, Organizing, and Planting Molecules on Substrate Surfaces – Promising New Approaches towards Nanoarchitectonics from the Bottom up"  Angew. Chem. 2003, 115, 24-26; Angew. Chem. Int. Ed. 2003, 42, 24-26.

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[12]
E. M. Harth, S. Hecht, B. Helms, E. E. Malmstrom, J. M. J. Fréchet*, C. J. Hawker*: "The Effect of Macromolecular Architecture in Nanomaterials: A Comparison of Site Isolation in Porphyrin Core Dendrimers and their Isomeric Linear Analogs"  J. Am. Chem. Soc. 2002, 124, 3926-3938.

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[11]
S. Hecht, J. M. J. Fréchet*: "Light-driven Catalysis within Dendrimers: Designing Amphiphilic Singlet Oxygen Sensitizers"  J. Am. Chem. Soc. 2001, 123, 6959-6960.

[10]
S. Hecht, J. M. J. Fréchet*: "Dendritic Encapsulation of Function: Applying Nature’s Site Isolation Principle from Biomimetics to Materials Science"  Angew. Chem. 2001, 113, 76-94; Angew. Chem., Int. Ed. 2001, 40, 74-91.

[9]
S. Hecht, N. Vladimirov, J. M. J. Fréchet*: "Encapsulation of Functional Moieties within Branched Star Polymers: Effect of Chain Length and Solvent on Site Isolation"  J. Am. Chem. Soc. 2001, 123, 18-25.

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[8]
M. S. Matos, J. Hofkens, W. Verheijen, F. C. De Schryver*, S. Hecht, K. W. Pollak, J. M. J. Fréchet*, B. Forier, W. Dehaen: "Effect of Core Structure on Photophysical and Hydrodynamic Properties of Porphyrin Dendrimers"  Macromolecules 2000, 33, 2967-2973.

[7]
S. Hecht, T. Emrick, J. M. J. Fréchet*: "Hyperbranched Porphyrins – a Rapid Synthetic Approach to Multiporphyrin Macromolecules"  Chem. Commun. 2000, 313-314.

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[6]
S. Hecht, H. Ihre, J. M. J. Fréchet*: "Porphyrin Core Star Polymers: Synthesis, Modification, and Implication for Site Isolation"  J. Am. Chem. Soc. 1999, 121, 9239-9240.

[5]
S. Hecht, J. M. J. Fréchet*: "An Alternative Synthetic Approach toward Dendritic Macromolecules: Novel Benzene-Core Dendrimers via Alkyne Cyclotrimerization"  J. Am. Chem. Soc. 1999, 121, 4084-4085.

[4]
H. Braatz, S. Hecht, H. Seifert, S. Helm, J. Bendig*, W. Rettig*: "Photochemistry and Photophysics of Donor-Acceptor-Polyenes. I: All-trans-4-dimethylamino-4'-cyano-1,4-diphenylbutadiene (DCB)"  J. Photochem. Photobiol. A: Chemistry 1999, 123, 99-108.

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[3]
W. G. Dauben, S. Hecht*: "Wavelength-Dependent Photochemistry of 4-Methoxy-bicyclo[3.1.0]hexenones"  J. Org. Chem. 1998, 63, 6102-6107.

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[2]
M. Nickoleit, S. Hecht, A. Uhl, J. Bendig*: "Simultaneous Two-Photon Excitation Energy Transfer (SEET) and Non-Linear Photochemistry"  J. Inf. Rec. Mater. 1996, 23, 63-66.

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[1]
H. Ross, J. Bendig*, S. Hecht: "Sensitized Photocatalytical Oxidation of Terbutylazine"  Solar Energy Mater. & Solar Cells 1994, 33, 475-481.
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