@article{10587,
  abstract     = {Access to a blossoming library of colloidal nanomaterials provides building blocks for complex assembled materials. The journey to bring these prospects to fruition stands to benefit from the application of advanced processing methods. Epitaxially connected nanocrystal (or quantum dot) superlattices present a captivating model system for mesocrystals with intriguing emergent properties. The conventional processing approach to creating these materials involves assembling and attaching the constituent nanocrystals at the interface between two immiscible fluids. Processing small liquid volumes of the colloidal nanocrystal solution involves several complexities arising from the concurrent spreading, evaporation, assembly, and attachment. The ability of inkjet printers to deliver small (typically picoliter) liquid volumes with precise positioning is attractive to advance fundamental insights into the processing science, and thereby potentially enable new routes to incorporate the epitaxially connected superlattices into technology platforms. In this study, we identified the processing window of opportunity, including nanocrystal ink formulation and printing approach to enable delivery of colloidal nanocrystals from an inkjet nozzle onto the surface of a sessile droplet of the immiscible subphase. We demonstrate how inkjet printing can be scaled-down to enable the fabrication of epitaxially connected superlattices on patterned sub-millimeter droplets. We anticipate that insights from this work will spur on future advances to enable more mechanistic insights into the assembly processes and new avenues to create high-fidelity superlattices.},
  author       = {Balazs, Daniel and Erkan, N. Deniz and Quien, Michelle and Hanrath, Tobias},
  issn         = {1998-0000},
  journal      = {Nano Research},
  keywords     = {interfacial assembly, colloidal nanocrystal, superlattice, inkjet printing},
  number       = {5},
  pages        = {4536–4543},
  publisher    = {Springer Nature},
  title        = {{Inkjet printing of epitaxially connected nanocrystal superlattices}},
  doi          = {10.1007/s12274-021-4022-7},
  volume       = {15},
  year         = {2022},
}

@article{6566,
  abstract     = {Methodologies that involve the use of nanoparticles as “artificial atoms” to rationally build materials in a bottom-up fashion are particularly well-suited to control the matter at the nanoscale. Colloidal synthetic routes allow for an exquisite control over such “artificial atoms” in terms of size, shape, and crystal phase as well as core and surface compositions. We present here a bottom-up approach to produce Pb–Ag–K–S–Te nanocomposites, which is a highly promising system for thermoelectric energy conversion. First, we developed a high-yield and scalable colloidal synthesis route to uniform lead sulfide (PbS) nanorods, whose tips are made of silver sulfide (Ag2S). We then took advantage of the large surface-to-volume ratio to introduce a p-type dopant (K) by replacing native organic ligands with K2Te. Upon thermal consolidation, K2Te-surface modified PbS–Ag2S nanorods yield p-type doped nanocomposites with PbTe and PbS as major phases and Ag2S and Ag2Te as embedded nanoinclusions. Thermoelectric characterization of such consolidated nanosolids showed a high thermoelectric figure-of-merit of 1 at 620 K.},
  author       = {Ibáñez, Maria and Genç, Aziz and Hasler, Roger and Liu, Yu and Dobrozhan, Oleksandr and Nazarenko, Olga and Mata, María de la and Arbiol, Jordi and Cabot, Andreu and Kovalenko, Maksym V.},
  issn         = {1936-086X},
  journal      = {ACS Nano},
  keywords     = {colloidal nanoparticles, asymmetric nanoparticles, inorganic ligands, heterostructures, catalyst assisted growth, nanocomposites, thermoelectrics},
  number       = {6},
  pages        = {6572--6580},
  publisher    = {American Chemical Society},
  title        = {{Tuning transport properties in thermoelectric nanocomposites through inorganic ligands and heterostructured building blocks}},
  doi          = {10.1021/acsnano.9b00346},
  volume       = {13},
  year         = {2019},
}

@article{367,
  abstract     = {The functional properties of quaternary I2–II–IV–VI4 nanomaterials, with potential interest in various technological fields, are highly sensitive to compositional variations, which is a challenging parameter to adjust. Here we demonstrate the presence of phosphonic acids to aid controlling the reactivity of the II element monomer to be incorporated in quaternary Cu2ZnSnSe4 nanoparticles and thus to provide a more reliable way to adjust the final nanoparticle metal ratios. Furthermore, we demonstrate the composition control in such multivalence nanoparticles to allow modifying charge carrier concentrations in nanomaterials produced from the assembly of these building blocks. },
  author       = {Ibáñez, Maria and Berestok, Taisiia and Dobrozhan, Oleksandr and Lalonde, Aaron and Izquierdo Roca, Victor and Shavel, Alexey and Pérez Rodríguez, Alejandro and Snyder, G Jeffrey and Cabot, Andreu},
  issn         = {1572-896X},
  journal      = {Journal of Nanoparticle Research},
  keywords     = {CZTSe, Nanostructured materials, Colloidal synthesis, Composition control, Electrical transport:  Thermoelectric},
  publisher    = {Springer Nature},
  title        = {{Phosphonic acids aid composition adjustment in the synthesis of Cu2+xZn1−xSnSe4−y nanoparticles}},
  doi          = {10.1007/s11051-016-3545-4},
  volume       = {18},
  year         = {2016},
}

@article{382,
  abstract     = {Mn3O4@CoMn2O4 nanoparticles (NPs) were produced at low temperature and ambient atmosphere using a one-pot two-step synthesis protocol involving the cation exchange of Mn by Co in preformed Mn3O4 NPs. Selecting the proper cobalt precursor, the nucleation of CoxOy crystallites at the Mn3O4@CoMn2O4 surface could be simultaneously promoted to form Mn3O4@CoMn2O4–CoxOy NPs. Such heterostructured NPs were investigated for oxygen reduction and evolution reactions (ORR, OER) in alkaline solution. Mn3O4@CoMn2O4–CoxOy NPs with [Co]/[Mn] = 1 showed low overpotentials of 0.31 V at −3 mA·cm–2 and a small Tafel slope of 52 mV·dec–1 for ORR, and overpotentials of 0.31 V at 10 mA·cm–2 and a Tafel slope of 81 mV·dec–1 for OER, thus outperforming commercial Pt-, IrO2-based and previously reported transition metal oxides. This cation-exchange-based synthesis protocol opens up a new approach to design novel heterostructured NPs as efficient nonprecious metal bifunctional oxygen catalysts.},
  author       = {Luo, Zhishan and Irtem, Erdem and Ibanez, Maria and Nafria, Raquel and Márti Sánchez, Sara and Genç, Aziz and De La Mata, Maria and Liu, Yu and Cadavid, Doris and Llorca, Jordi and Arbiol, Jordi and Andreu, Teresa and Morante, Joan and Cabot, Andreu},
  issn         = {1944-8252},
  journal      = {Applied Materials and Interfaces},
  keywords     = {nanoparticle, ORR, OER, manganese oxide, cobalt oxide, colloidal, electrocatalysis, cation exchange},
  number       = {27},
  pages        = {17435 -- 17444},
  publisher    = {American Chemical Society},
  title        = {{Mn3O4@CoMn2O4–CoxOy nanoparticles: Partial cation exchange synthesis and electrocatalytic properties toward the oxygen reduction and evolution reactions}},
  doi          = {10.1021/acsami.6b02786},
  volume       = {8},
  year         = {2016},
}

@article{21518,
  abstract     = {The present investigation confirms that initially implemented procedure to produce poly(methylidene malonate 2.1.2) (PMM 2.1.2) nanoparticles (Lescure et al. Pharm Res 1994;11:1270–77) lead to products mostly containing plasticizing oligomers which strongly lowered glass-transition temperature (Tg), dramatically reduced nanoparticle consistency and rendered them too sensitive to solubilization when diluted in an aqueous medium. From MALDI-TOF spectroscopy analysis, performed on intact colloids, emerged some structural information about these oligomeric species which could result from an intramolecular cyclization mechanism occurring soon in the course of the polymerization process. Thus, with the objective of overcoming these drawbacks, this contribution deals with the variations of manufacturing specifications such as pH and magnetic stirring speed to try and modulate molecular weight (Mw) of nanoparticle constituents and reduce oligomer concentration. Although the analyses performed on these new nanoparticles were rather encouraging, the colloid formation yield became so low that it required the developement of other methodologies, excluding a previous emulsion step, and allowing a controlled production of PMM 2.1.2-made nanoparticles having better physico-chemical characteristics while keeping good pharmaceutical capabilities.},
  author       = {Breton, P and Guillon, X and Roy, D and Lescure, F and Riess, G and Bru, N and Roques-Carmes, Charles},
  issn         = {0142-9612},
  journal      = {Biomaterials},
  keywords     = {Colloid physico-chemical analysis, Colloidal drug carriers, MALDI-TOF spectroscopy, Nanoparticles, Poly(methylidene malonate), Scanning electron microscopy},
  number       = {1-3},
  pages        = {271--281},
  publisher    = {Elsevier},
  title        = {{Physico-chemical characterization, preparation and performance of poly (methylidene malonate 2.1.2) nanoparticles}},
  doi          = {10.1016/s0142-9612(97)00243-3},
  volume       = {19},
  year         = {1998},
}