Winnik Scholarship Essays

1. Introduction

Stimuli-responsive polymers have been of great interest in the past decades due to their responsive abilities to a variety of factors, like pH [1], temperature [2], ultrasound [3], light [4], and electric/magnetic fields [5,6]. Among these polymers, thermo-responsive (or thermo-sensitive) ones are still the most widely studied subgroup since the earliest report on poly(N-isopropylacrylamide) (PNIPAM) [7]. According to the response of solubility to the change of temperature, generally, two different types of thermo-responsive polymer can be distinguished. One type is represented by polymers, like polyzwitterions and poly(ethylene oxide), which have an upper critical solution temperature (UCST). This means that their solubility in a given solvent increases with temperature above a given critical value, i.e., the UCST [8]. The other type comprises polymers like PNIPAM that display the opposite responsive behavior, i.e., the solubility decreases with temperature below a given critical value (LCST). Since the discovery of thermo-responsive polymers, application fields have been expanded to a variety of subjects: drug delivery [3,9], bioengineering [2,10], sensors [11,12], functional coatings [13,14], and enhanced oil recovery (EOR) [15,16].

In the above-mentioned applications, most of the polymers are supposed to perform their thermo-responsive functions in the range of 20 °C to 50 °C [2,3,4,14,17,18]. As the phase transition temperature possessed by linear PNIPAM is in the range of 31 °C to 33 °C (these values being irrespective of the polymer concentration, though slightly affected by the average molecular weight) [16,19], which falls within the described application windows’ (e.g., drug carrier and functional coating) temperature range [2,3,14], the synthesis of PNIPAM (co)polymers has been an attractive subject since the first report about its LCST phenomenon in 1968 [20]. From then on, many investigations have focused on manipulating the LCST window of PNIAPM. To achieve this, several factors should be considered including the molecular weight [19], properties of end groups [19,21], and chemical structure (molecular composition and architecture) [16,22]. Thanks to the development of controlled polymerization techniques (Atom-transfer radical-polymerization (ATRP), Reversible addition–fragmentation chain-transfer (RAFT), etc.), these kinds of studies can be carried out in a convenient and more accurate manner.

According to previous findings on PNIPAM homopolymers, the LCST can only be tuned by the structure of the end groups when the molecular weight is low enough (degree of polymerization (DP) below 200) [19,23] or the tacticity is well controlled [24]. Thus, most of the efforts have been spent on the synthesis of PNIPAM (block, random, graft) copolymers and polymers with differing architecture [22,25]. For these polymers, not only do the composition and architecture affect the LCST, but their solution rheological behavior can also be manipulated due to the inter-/intra-molecular thermo-reversible aggregation of the hydrophobic NIPAM moieties above the LCST. Although varieties of PNIPAM copolymers with different architecture have been synthesized, relatively few reports focus on their thermo-thickening properties. To the best of our knowledge, only block and graft PNIPAM copolymers have been studied so far [15,16,26,27].

In the case of grafted comb-like polymers, compared with side chains with a block structure, it has been reported that random PNIPAM copolymer side chains could endow the product with better thermo-thickening behavior (above 50 °C) and solubility in water for applications like EOR [16,28]. From this point of view, the synthesis of branched PNIPAM copolymers will be helpful to fully understanding the influence of the structure on polymers’ properties. In this case, waxy potato starch, which contains more than 95% amylopectin with a highly branched structure that is composed of 105–106 anhydroglucose units (AGU), will be an interesting candidate as the core due to its inherent high molecular weight and highly branched structure (see also Figure S1 illustration and Graphical abstract) [29,30,31,32].

Based on this, in the present work, random copolymers of acrylamide and N-isopropylacrylamide were grafted from a waxy potato starch backbone at the molecular level by Cu0-mediated LRP in aqueous solution. The obtained highly branched copolymer of starch-g-poly(acrylamide-co-N-isopropylacrylamide) (St-g-(PAM-co-PNIPAM) was characterized by 1H-NMR and FTIR. The influence of chain composition on the highly branched polymers’ rheological properties (at both room temperature and high temperature), LCST, and their response to salinity was studied and compared with the comb-like copolymer reported [16].

2. Materials and Methods

2.1. Materials

Waxy potato starch (>95% amylopectin, molecular weight in the range 107–109 Da and roughly 5% of α (1–6) branching points) was kindly donated by Avebe (Veendam, The Netherlands) and dried under vacuum at 60 °C for 48 h before use. Lithium chloride was purchased from Sigma-Aldrich and dried under vacuum at 80 °C for 24 h before use. Anhydrous N,N-dimethylacetamide (DMAc) was purchased from Sigma-Aldrich in Sure/Seal™ (Steinheim, Germany). 2-bromopropionyl bromide (BpB), formaldehyde solution (37%), and formic acid (>95%) were purchased from Sigma-Aldrich and used as received. Tris(2-aminoethyl)amine (Tren) was purchased from Tokyo Chemical Industry Co., Ltd. (TCI, Tokyo, Japan) and used as received. Tris[2-(dimethylamino)ethyl]amine (Me6Tren) was synthesized following the procedures reported [33]. N-Isopropylacrylamide (NIPAM, stabilized with 4-Methoxyphenol (MEHQ)) was purchased from TCI and recrystallized from acetone to remove the inhibitor. Acrylamide (AM) was purchased from Sigma-Aldrich and used as received. Copper powder (<75 μm) was purchased from Sigma-Aldrich and stored under an N2 atmosphere.

2.2. Characterization

NMR spectra were recorded on a Varian Mercury Plus 400 MHz spectrometer (Varian, Inc., Palo Alto, CA, USA) using deuterated solvents purchased from Sigma-Aldrich. Fourier Transform Infrared (FTIR) spectra were recorded with attenuated total reflection (ATR) accessories on an IRTracer-100 SHIMADZU Fourier Transform Infrared Spectrophotometer (Shimadzu Corp., Kyoto, Japan) and data were processed with LabSolutions IR software (Version 2.11, Shimadzu, Kyoto, Japan, 2014). Aqueous gel permeation chromatography (GPC) was conducted on an Agilent 1200 system (Agilent, Santa Clara, CA, USA) equipped with a differential refractive index (DRI) detector and column set (PSS SUPREMA 100 Å, 1000 Å, 3000 Å) from Polymer Standard Service GmbH (PSS, Mainz, Germany). The mobile phase used was 0.05 M NaNO3. Column oven and detector temperatures were regulated to 40 °C, with a flow rate of 1 mL/min. Polyacrylamide standards from PSS were used for calibration. Samples were filtered through a membrane with 0.22 μm pore size before injection. Experimental molar mass and polydispersity index (PDI) values of synthesized polymers were determined by conventional calibration using PSS WinGPC UniChrom GPC/SEC software (Version 8.20, Polymer Standards Service GmbH, Mainz, Germany, 1992–2014).

Rheological properties were measured using a HAAKE Mars III (Thermo Scientific, Waltham, MA, USA) rheometer equipped with a cone-and-plate geometry (diameter 60 mm, angle 2°). Solution viscosity was measured as a function of shear rate (0.1 to 1750 s−1, T = 20 °C), salt concentration (5000~100,000 ppm of NaCl, T = 20 °C, shear rate 10 s−1) and temperature (10 °C to 90 °C, shear rate 1 s−1, 3 s−1, 10 s−1 and 30 s−1), respectively.

The intrinsic viscosity was determined according to the Martin equation [34]: where is the reduced viscosity, is the specific viscosity, c is the polymer concentration, [η] is the intrinsic viscosity, and . is a constant dependent on the polymer–solvent system.
The relaxation time () was determined according to the “Carreau–Yasuda” model [35,36,37]: where η is the viscosity, is the zero shear rate viscosity, is the viscosity at the infinite shear rate, is the critical shear rate for the onset of shear thinning, n − 1 is the power law index, and represents the transition region between and the power law region.

The cloud point of the different polymers was determined by UV–vis analysis. A JASCO V-730 UV–vis spectrophotometer (JASCO, Easton, MD, USA) equipped with a temperature-controlled six-position sample holder was used. The transmittance of the polymer solutions (1.2 wt %) was recorded at 350 nm at temperature ranges from 20 °C to 95 °C against a reference sample containing demineralized water. Temperature was manually controlled with the software, and each measurement was taken after the temperature was stabilized within ±0.5 °C for 30 s.

2.3. Synthesis of Starch-Based Macroinitiator (StBr)

Waxy potato starch (2.59 g, 16 mmol) and lithium chloride (1.02 g, 24 mmol) were added to a 250 mL three-necked flask (dried overnight at 100 °C before use) connected with a mechanical stirrer. The system was vacuumed under heat and backfilled with N2 three times to remove residual water. Anhydrous DMAc (100 mL) was transferred to the flask and the mixture was stirred at 130 °C for about 1 h under an N2 atmosphere. A transparent solution formed when the mixture cooled down to room temperature naturally. The solution was cooled down with an ice bath and then 0.42 mL (4 mmol) BpB was added dropwise within 30 min under the protection of N2. The mixture was then warmed up naturally to room temperature and stirred for 3 h. The final products were precipitated out with tenfold acetone and then filtered, washed, and dried under vacuum at 45 °C for 24 h. The resulting white powder was then purified by Soxhlet extraction with ethanol as the solvent for 24 h (final yield: 87%). The obtained degree of substitution (DS) represents a convenient compromise as it allows a proper characterization (not possible for lower values where spectroscopic data are difficult to identify), while, at the same time, does not compromise the solubility in water (for too high DS values).

2.4. Synthesis of St-g-(PAM-co-PNIPAM) by Aqueous Cu0-Mediated LRP

Typical Polymerization Protocol: H2O (100 mL), StBr (48.6 mg, 0.04 mmol), a mixture of AM and NIPAM (240 mmol in total), and Me6TREN (23 μL, 0.08 mmol) were charged to a 250 mL three-neck round-bottom flask with a magnetic stirrer bar and rubber septum. The solution was deoxygenated by three freeze–pump–thaw cycles. Cu powder (5.2 mg, 0.08 mmol) was then added with rapid stirring under the protection of nitrogen. The mixture was allowed to react for 15 min at room temperature. The resulting solution was freeze-dried and followed by Soxhlet extraction with ethanol as the solvent for 48 h. The product was then vacuum-dried at 65 °C for 48 h. For the purposes of brevity and clarity, taking the grafted product with no NIPAM content as an example, the sample was named St-g-PNIPAM-P0; 0 here stands for the fact that the mole percentage of NIPAM in the feeding AM/NIPAM monomer mixture is 0%.

2.5. Cleaving of Graft Polymer Chains from the Starch Backbone

The starch-based copolymer (0.25 g) was dissolved in 25 mL Milli-Q water in a round-bottom flask, and 0.25 mL concentrated hydrochloric acid was then added. The mixture was stirred and refluxed at 100 °C for 3 h. The resulting free polyacrylamide (PAM) was precipitated out with methanol, then filtered and washed with methanol three times. The product was dried under vacuum at 60 °C for 24 h.

Positions

where I work(ed)

 

  • 2008-2011 - NSERC Postdoctoral Fellow - Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA
    supervisor: George M. Whitesides
    research topics: Experimental studies of i) electric and acoustic control of flames, ii) large scale molecular junctions, iii) germination and root development
    , iv) unconventional nanofabrication

  • February 2012 till present - Assistant Professor, Department of Materials Science and Engineering, Iowa State University, Ames, IA

  • November 2012 till present - Associate Scientist, US DoE Ames Laboratory, Ames, IA

Education

where I studied

 

  • 1997-2002 - Laurea Magistrale (Materials Science): Departments of Chemistry and Physics, University of Parma, Parma, Italy (cum laude)
    supervisor: Gianluca Calestani
    research topics: Evaporation-induced self-assembly of polystyrene colloids to form photonic crystals

  • 2003-2008 - Ph.D.(Interdisciplinary Chemistry): Department of Chemistry, University of Toronto, Toronto, Canada
    supervisor: Geoffrey A. Ozin
    research topics:i) Synthesis and characterization of colloidal nanostructures, ii) experimental studies of polymer-like behaviour in inorganic nanowires, iii) synthesis and characterization of C60-based self-assembled mesoporous materials, iv) photonic quasicrystals design and fabrication, v) experimental tuning of luminescence lifetime of quantum dots by photonic bandgaps.

Selected Awards and Fellowships

  • 2014 - Beckman Young Investigator Award
    "...to the most promising young faculty members in the early stages of academic careers in the chemical and life sciences particularly to foster the invention of methods, instruments and materials that will open up new avenues of research in science."
  • 2014 - Plant Science Institute Faculty Scholar
  • 2014 - Franco Strazzabosco Award for Young Engineers
    "...recognizes an Italian engineer under 40 for his entrepreneurial courage in applying scientific discoveries to public advantage. The award consists of $5,000 and the Presidential Medal of Representation, awarded from the Italian President Giorgio Napolitano"
  • 2009 - NSERC Postdoctoral Fellowship
    “...this two-year fellowship is given by the Natural Sciences and Engineering Research Council of Canada to graduates from Canadian universities who display exceptional promise”
  • 2009 - IUPAC Prize for Young Chemists - Honorable Mention
    “...this yearly prize from the International Union of Pure and Applied Chemistry awards the best Ph.D. theses in the chemical sciences as described in 1000-word essay...”
  • 2009 - CSC CCUCC Chemistry Doctoral Prize
    “...this yearly award is intended to recognize outstanding achievement and potential in research by a graduate student whose PhD thesis in Chemistry was formally accepted by a Canadian university...”
  • 2008 - Governor General Gold Medal
    “...granted yearly to the three grad student with highest academic standing in the whole University of Toronto...”
  • 2008 - American Chemical Society DIC Young Investigator Award
    “...this yearly award is granted to ~8 graduate students in their final year and selected by the Division of Inorganic Chemistry of ACS for their excellence in research...”
  • 2008 - Canadian Society of Chemistry DIC Award for Graduate Work in Inorganic Chemistry
    “...this yearly award is granted to one graduate student in his/her final year and selected by the Division of Inorganic Chemistry of CSC for their excellence in research...”
  • 2006 - Materials Research Society (MRS) Graduate Student Award - Silver Medal
    “...MRS seeks to recognize students of exceptional ability who show promise for significant future achievement in materials research....”
  • 2005 - Materials Research Society (MRS) Graduate Student Award - Silver Medal
    “...MRS seeks to recognize students of exceptional ability who show promise for significant future achievement in materials research....”

Textbooks

  • Nanochemistry - A Chemical Approach To Nanomaterials (II edition)
    Geoffrey A. Ozin, Andre C. Arsenault, and Ludovico Cademartiri - foreword by Chad A. Mirkin
    Royal Society of Chemistry - 2009 - link

  • Concepts of Nanochemistry
    Ludovico Cademartiri and Geoffrey A. Ozin - foreword by Jean Marie Lehn
    Wiley-VCH - 2009 - link
    read the review by Prof. Nikolaus Korber on Angewandte Chemie here

Peer Reviewed Scientific Publications

  • P. Mohapatra, D. Mendivelso-Perez, J. M. Bobbitt, S. Shaw, B. Yuan, X. C. Tian, E. A. Smith, L. Cademartiri*
    submitted

  • S. Shaw, X.C. Tian, T. F. Silva, J. M. Bobbitt, F. Naab, C. L. Rodrigues, U. Hamdeh, M. G. Panthani, E. A. Smith, L. Cademartiri*
    submitted

  • From Petri Dishes to Model Ecosystems
    O. Siemianowski†, K. R. Lind†, X. C. Tian, M. Cain, S. Xu, B. Ganapathysubramanian, L. Cademartiri*

    Trends in Plants Science, accepted

  • HOMEs for Plants and Microbes - A Phenotyping Approach With Quantitative Control Of Signaling Between Organisms And Their Individual Environments
    O. Siemianowski†, K. R. Lind†, X. C. Tian, M. Cain, S. Xu, B. Ganapathysubramanian, L. Cademartiri*
    Lab on a Chip, 2018, 18, 620-626 - abstract and pdf

  • Calcination Does Not Remove All Carbon From Colloidal Nanocrystal Assemblies
    P. Mohapatra, S. Shaw, D. Mendivelso-Perez, J. M. Bobbitt, T. F. Silva, F. Naab, B. Yuan, X.C. Tian, E.A. Smith, L. Cademartiri*
    Nature Communications, 2017, 8, 1, 2038 - abstract and pdf

  • Building Materials From Colloidal Nanocrystal Arrays: Molecular Control Of Solid/Solid Interfaces In Nanostructured Tetragonal ZrO2
    S. Shaw, T. F. Silva, J. M. Bobbitt, F. Naab, C. L. Rodrigues, B. Yuan, J. J. Chang, X.C. Tian, E.A. Smith, L. Cademartiri*
    Chemistry of Materials, 2017, 29, 18, 7888-7900 - abstract and pdf

  • Surface And Buried Interface Layer Studies On Challenging Structures As Studied By ARXPS
    R. N. S. Sodhi*, P. Brodersen, L. Cademartiri, M. M. Thuo, C. A. Nijhuis
    Surface & Interface Analysis, 2017, 49, 13, 1309-1315- abstract and pdf

  • Simplicity as a Route to Impact in Materials Research
    X.C. Tian, K.R. Lind, S. Shaw, O. Siemianowski, L. Cademartiri*
    Advanced Materials, 2017, 29, 1604681 - abstract and pdf

  • Sulfur In Oleylamine Is A Powerful And Versatile Etchant For Oxide, Sulfide, And Metal Colloidal Nanoparticles
    B. Yuan, X.C. Tian, S. Shaw, R. Petersen, L. Cademartiri*
    Physica Status Solidi A, 2017, 214, 5, 1600543 - abstract and pdf
  • Optics-Free, Plasma-Based Lithography in Inorganic Resists Made Up of Nanoparticles
    S. Shaw, K. J.Miller, J. L. Colaux, L. Cademartiri*
    Journal of Micro/Nanolithography, MEMS, and MOEMS, 2016, 15, 031607 - abstract and pdf

  • Towards Bulk Syntheses Of Nanomaterials: An Homeostatically Supersaturated Synthesis Of Polymer-Like Bi2S3 Nanowires With Nearly 100% Yield And No Injection
    B. Yuan, J. A. Brandt, S. Shaw, P. Mohapatra, L. Cademartiri*
    RSC Advances, 2016, 6, 113815-113819 - abstract and pdf

  • Building Materials from Colloidal Nanocrystal Arrays: Evolution of Structure, Composition, and Mechanical Properties Upon Removal of Ligands by O2 Plasma
    S. Shaw, J. L. Colaux, J. L. Hay, F. C. Peiris, L. Cademartiri*
    Advanced Materials 2016, 28, 40, 8900-8905 - abstract and pdf

  • Plant Growth Environments With Programmable Relative Humidity And Homogeneous Nutrient Availability
    K. R. Lind, N. Lee, T. Sizmur, O. Siemianowski, S. v. Bruggen, B. Ganapathysubramaniam, L. Cademartiri*
    PLOS ONE, 2016, 11(6), e0155960 - abstract and pdf

  • Building Materials from Colloidal Nanocrystal Arrays: Preventing Crack Formation During Ligand Removal by Controlling Structure and Solvation
    S.Shaw, B. Yuan, X.C. Tian, K.J. Miller, B.M. Cote, J.L. Colaux, A. Migliori, M.G. Panthani, L. Cademartiri*
    Advanced Materials 2016, 28, 40, 8892-8899 - abstract and pdf

  • Healable, Scalable, Green, Superhydrophobic/oleophobic Coatings Resistant to Foot Traffic
    X.C. Tian, S. Shaw, K. Lind, L. Cademartiri*
    Advanced Materials 2016, 19, 3677-3682- abstract and pdf

  • Programmable Self-Assembly
    L. Cademartiri*, K. J. M. Bishop
    Nature Materials 2015, 14, 2-9 - abstract and pdf

  • Flexible One-Dimensional Nanostructures (invited minireview)
    B. Yuan, L. Cademartiri*
    Journal of Materials Science & Technology, 2015, 31, 607-615 - abstract and pdf

  • LEGO® Bricks as Building Blocks for Centimeter Scale Biological Environments
    K. R. Lind, T. Sizmur, S. Benomar, A. I. Miller, L. Cademartiri*
    PLoS ONE 2014, 9 (6), e100867 - abstract and pdf

  • A Simple and Versatile 2-Dimensional Platform to Study Plant Germination and Growth under Controlled Humidity
    T. Sizmur, K. R. Lind, S. Benomar, H. VanEvery, L. Cademartiri*
    PLoS ONE 2014, 9 (5), e96730 - abstract and pdf

  • Electric Winds Driven by Time Oscillating Corona Discharges
    A. M. Drews, L. Cademartiri, G. M. Whitesides, K. J. M. Bishop*
    Journal of Applied Physics 2013, 114, 143302 - abstract and pdf

  • Nanowires and Nanostructures that Grow like Polymer Molecules
    S. Shaw, L. Cademartiri*
    Advanced Materials 2013, 25(35), 4829-4844 - frontispiece - abstract and pdf

  • Using Explosions to Power a Soft Robot
    R. F. Shepherd, A. A. Stokes, J. Freake, J. Barber, P. W. Snyder, A. D. Mazzeo, L. Cademartiri, S. A. Morin, G. M. Whitesides*
    Angewandte Chemie International Edition 2013, 52(10), 2892-2896 - abstract and pdf

  • Recent Advances in the Synthesis of Colloidal Nanowires (invited)
    A. Repko, L. Cademartiri*
    Canadian Journal of Chemistry 2012, 90, 1032- abstract and pdf

  • AC Electric Fields Drive Steady Flows in Flames
    A. Drews, L. Cademartiri, M. Chemama, M. Brenner, G. M. Whitesides, K. J. M. Bishop*
    Physical Review E 2012, 86 (3), 036314 - abstract and pdf

  • Polymer-like Conformation and Growth Kinetics of Bi2S3 Nanowires
    L. Cademartiri, G. Guerin, K. J. M. Bishop, M.A. Winnik*, G. A. Ozin*
    Journal of the American Chemical Society 2012, 134 (22), 9327-9334 - abstract and pdf

  • The Electrical Resistance of AgTS-S(CH2)n-1CH3//Ga2O3/EGaIn Tunneling Junctions
    L. Cademartiri, M. M. Thuo, C. A. Nijhuis, W. F. Reus, S. Tricard, J. R. Barber, R. N. S. Sodhi*, P. Brodersen*, C. G. Kim, R. C. Chiechi, G. M. Whitesides*
    Journal of Physical Chemistry C 2012, 116(20), 10848–10860 - abstract and pdf

  • Using Shape for Self-Assembly(invited review - Festschrift for Alan Mackay)
    L. Cademartiri*, K. J. M. Bishop, P. W. Snyder, G. A. Ozin

    Philosophical Transactions of the Royal Society A 2012, 370, 2824-2847 - abstract and pdf

  • On the Nature and Importance of the Transition between Molecules and Nanocrystals: Towards a Chemistry of “Nanoscale Perfection” (invited review)
    L. Cademartiri* and V. Kitaev*
    Nanoscale 2011, 3, 3435 - front cover - abstract and pdf

  • From Ideas to Innovation: Nanochemistry as a Case Study
    G. A. Ozin* and L. Cademartiri*
    Small 2011, 7(1), 49-54 - abstract and pdf

  • Survey of Materials for Nanoskiving and Influence of the Cutting Process on the Nanostructures Produced
    D. J. Lipomi, R. V. Martinez, R. M. Rioux, L. Cademartiri, W. F. Reus, G. M. Whitesides*
    ACS Applied Materials & Interfaces 2010, 2(9), 2503-2514 - front cover - abstract and pdf

  • Ultrathin Bi2S3 Nanowires: Surface and Core Structure at the Cluster-Nanocrystal Transition
    J. W. Thomson, L. Cademartiri, M. MacDonald, S. Petrov, G. Calestani, P. Zhang, G. A. Ozin*
    Journal of the American Chemical Society2010, 132(26), 9058-9068 - abstract and pdf

  • Emerging Strategies for the Synthesis of Highly Monodisperse Colloidal Nanostructures (invited review)
    L. Cademartiri and G. A. Ozin*
    Philosophical Transactions of the Royal Society A 2010, 368(1927), 4229-4248 - abstract and pdf

  • Nanofabrication by Self-Assembly (invited review)
    G. A. Ozin*, K. Hou, B. V. Lotsch, L. Cademartiri, D. P. Puzzo, F. Scotognella, A. Ghadimi, J. Thomson
    Materials Today 2009, 12(5), 12-23 - abstract and pdf

  • NanoChemistry: What's Next?
    G. A. Ozin* and L. Cademartiri*
    Small 2009, 5(11), 1240-1244 - abstract and pdf

  • Crosslinking Bi2S3 Ultrathin Nanowires: A Platform for Nanostructure Formation and Biomolecule Detection
    L. Cademartiri, F. Scotognella, P. G. O’Brien, B. V. Lotsch, J. Thomson, N. P. Kherani, G. A. Ozin*
    Nano Letters 2009, 9(4), 1482-1486 - abstract, pdf and supplementary information

  • *
    Accounts of Chemical Research
    2008, 41, 1820-1830 - abstract, pdf and supplementary information

  • Ultrathin Nanowires: A Materials Chemistry Perspective
    L. Cademartiri and G. A. Ozin*
    Advanced Materials 2009, 21(9), 1013-1020 - abstract, pdf and supplementary information

  • Large Scale Synthesis of Ultrathin Bi2S3 Necklace Nanowires
    L. Cademartiri, R. Malakooti, P. G. O’ Brien, A. Migliori, S. Petrov, N. P. Kherani, G. A. Ozin*
    Angewandte Chemie International Edition 2008, 20, 3814-3817 - front cover- abstract, pdf and supplementary information

  • Ultrathin Sb2S3 Nanowires and Nanoplatelets
    R. Malakooti, L. Cademartiri (co-first author), A. Migliori, G. A. Ozin*
    Journal of Materials Chemistry 2008, 18, 66-69 - front cover - abstract, pdf and supplementary information

  • C60-PMO: Periodic Mesoporous Buckyballsilica
    W. Whitnall, L. Cademartiri, G. A. Ozin*
    Journal of the American Chemical Society 2007, 129(50), 15644 - abstract and pdf

  • Plasma within Templates: Molding Flexible Nanocrystal Solids into Multifunctional Architectures
    A. Ghadimi, L. Cademartiri, U. Kamp, G. A. Ozin*
    Nano Letters 2007, 7(12), 3864 - abstract and pdf

  • Three-Dimensional Silicon Inverse Photonic Quasicrystals for Infrared Wavelengths
    A. Ledermann*, L. Cademartiri, M. Hermatschweiler, C. Toninelli, G. A. Ozin, D. S. Wiersma, M. Wegener, and G. von Freymann
    Nature Materials 2006, 5, 942-945 - abstract, pdf and supplementary informations

  • Size Dependent Extinction Coefficients of PbS Quantum Dots
    L. Cademartiri, E. Montanari, G. Calestani, A. Migliori, A. Guagliardi, G. A. Ozin*
    Journal of the American Chemical Society 2006, 128, 10337-10346 - abstract, pdf and supplementary informations

  • Shape-Controlled Bi2S3 Nanocrystals and their Plasma Polymerization into Flexible Films
    R. Malakooti, L. Cademartiri (co-first author), Y. Akcakir, S. Petrov, A. Migliori, G. A. Ozin*
    Advanced Materials 2006, 18, 2189-2194 - abstract, pdf and supplementary informations

  • From Color Fingerprinting to the Control Of Photoluminescence in Elastic Photonic Crystals
    A. C. Arsenault, T. J. Clark, G. von Freymann, L. Cademartiri, R. Sapienza, J. Bertolotti, E. Vekris, S. Wong, V. Kitaev, I. Manners, R. Z. Wang, S. John, D. S. Wiersma, G. A. Ozin*
    Nature Materials 2006, 5(3), 179-184 - front cover - abstract, pdf and supplementary informations

  • Multigram Scale, Solventless and Diffusion-Controlled Route to Highly Monodisperse PbS Nanocrystals
    L. Cademartiri, J. Bertolotti, R. Sapienza, D. S. Wiersma, G. von Freymann, G. A. Ozin*
    Journal of Physical Chemistry B 2006, 110(2), 671-673 - abstract, pdf and supplementary informations

  • Nanocrystals as Precursors for Flexible Functional Films
    L. Cademartiri*, G. von Freymann, A. C. Arsenault, J. Bertolotti, D. S. Wiersma, V. Kitaev, G. A. Ozin*
    Small 2005, 1 (12), 1184-1187 - abstract, pdf and supplementary informations

  • The Early Stages of the Self-Assembly Process of Polystyrene Beads for Photonic Application
    P. Nozar*, C. Dionigi, A. Migliori, G. Calestani, L. Cademartiri
    Synthetic Metals 2003, 139, 667-670 - pdf

  • Flux-Assisted Self-Assembly of Monodisperse Colloids
    L. Cademartiri*, A. Sutti, G. Calestani, P. Nozar, C. Dionigi, A. Migliori
    Langmuir 2003, 19, 7944-7947 - abstract and pdf
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updated December 17th, 2014

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