Results 11 to 20 of about 589 (163)

Substrate-Selective Temperature-Controlled Synthesis of Thiophene Derivatives at Interfaces. [PDF]

Angew Chem Int Ed Engl
The deposition of a dithiophene derivative on Ag(111) at room temperature followed by annealing gives rise to molecular wires, whereas the adsorption of the same precursor on a hot substrate affords the formation of benzotrithiophene species. Abstract The temperature‐controlled transformation of organic molecules at interfaces is an incipient yet ...
Pérez-Elvira E, Barragán A, Vicent DJ, Jóver Ó, Gallardo A, García-Frutos A, Černa L, Lauwaet K, Santos J, Perles J, Gallego JM, Miranda R, Urgel JI, Björk J, Di Giovannantonio M, Martín N, Écija D.   +16 more
europepmc   +3 more sources

Self-assembly and Lateral Cobalt Coordination of a Fivefold Symmetric Cyanostar Macrocycle on an Au(111) Surface. [PDF]

Chemistry
Herein, we report the first example of the formation of a close‐packed, regular 2D monolayer of a fivefold symmetric cyanostar macrocycle on an Au(111) surface under ultra‐high vacuum and the structural modification of such self‐assembled architecture upon cobalt atom deposition.
Černá L, Martínez García M, Mathialagan SK, Parreiras SO, Lauwaet K, Urgel JI, Gallardo A, Flood AH, Torres T, Gallego JM, Bottari G, Écija D.   +11 more
europepmc   +2 more sources

On-Surface Synthesis and Characterization of Cumulene-Linked Stone-Wales Polymers. [PDF]

Angew Chem Int Ed Engl
On‐surface synthesis of one‐dimensional polymers featuring Stone‐Wales defects and cumulene linkages is demonstrated via thermally and light‐induced reactions on Au(111). STM, nc‐AFM, and Raman spectroscopy, complemented by theory calculations, reveal their chemical structure with a non‐planar geometry, and a distinct electronic bandgap of 1.8 eV ...
Pérez-Elvira E, Wu F, Hwang JH, Ma J, Palomino-Ruiz L, Canola S, Barragán A, Lauwaet K, Gallego JM, Miranda R, Perrin ML, Écija D, Gallardo A, Borin Barin G, Feng X, Urgel JI.   +15 more
europepmc   +3 more sources

Toxicidad de los nanomateriales de interés biomédico en los sistemas biológicos

Mundo Nano, 2018
La nanotecnología ha pasado exitosamente del laboratorio a la vida cotidiana, particularmente en el campo de la medicina. Debido a sus propiedades únicas de los nanomateriales, es fundamental evaluar su toxicidad potencial, tanto en el ambiente como en ...
Roberto Vazquez Muñoz, Alejandro Huerta Saquero   +1 more
doaj   +1 more source

Presentación

Mundo Nano, 2023
Los trabajos presentados en este número permiten visualizar que la ciencia de nanomateriales en nuestro país tiene algunos retos como el desarrollo de nuevas alternativas sintéticas que no requieran agentes directores de estructura ni tiempos ...
Karla Oyuki Juárez Moreno, Gonzalo Ramírez García   +1 more
doaj   +1 more source

Biomoléculas en nanotecnología

La Granja: Revista de Ciencias de la Vida, 2011
Las propiedades de reconocimiento molecular y autoensamble intrínseco de las biomoléculas han fascinado a la nanotecnología. Su incursión está revolucionando la forma de fabricar nanomateriales.
José A. D. L. C. Rodríguez Galván
doaj   +1 more source

Del adn a los nanomateriales

Mundo Nano. Revista Interdisciplinaria en Nanociencias y Nanotecnología, 2015
IntroducciónLa tecnología moderna cambia a gran velocidad, pero en particular elritmo del progreso en electrónica basada en estado sólido es frenéticoy vertiginoso. Desde la invención del transistor y el posterior desarrollo decircuitos integrados, se ha vuelto necesario, y compulsivo, fabricar objetosde uso diario más pequeЦos, más portátiles, fáciles
M. J. Oviedo-Bandera, A. B. Castro-Ceseña, Enrique C. Samano   +2 more
openaire   +3 more sources

Tunable Oxygen Connectivity in Carbaporphyrinoid Polymers on Metal Surfaces

Angewandte Chemie, EarlyView.
Hydroxyl‐functionalized dicarbaporphyrinoid polymers synthesized on Au(111) enable tunable oxygen‐mediated connectivity under UHV conditions. Thermal activation yields one‐dimensional hydroxyl‐terminated polymers that can selectively evolve into either covalently‐linked dibenzo‐p‐dioxane architectures through intermolecular C–O–C coupling or two‐fold ...
Alberto Martínez‐Bajo, Maxence Urbani, Ana Barragán, Óscar Jover, Elena Pérez‐Elvira, Ilaria Tomei, Claudio Goletti, Alejandro Jiménez‐Martín, Aurelio Gallardo, Koen Lauwaet, David Écija, Diego Soler‐Polo, Marco Di Giovannantonio, Tomás Torres, José I. Urgel   +14 more
wiley   +2 more sources

π‐Enlargement in Porphyrin Macrocycles at Interfaces

Angewandte Chemie, Volume 138, Issue 30, 20 July 2026.
On‐surface synthesis of a 20‐π free‐base expanded porphyrin, by depositing onto a hot Ag(111) substrate an 18‐π free‐base precursor equipped with ‐CF3 functional groups ABSTRACT Porphyrins are essential heteroatomic macrocycles, fundamental to both biological systems and advanced technology.
Ana Barragán, Elena Pérez‐Elvira, Alba García‐Frutos, Diego J. Vicent, Pingo Mutombo, Koen Lauwaet, José M. Gallego, Rodolfo Miranda, José I. Urgel, Aurelio Gallardo, Nazario Martín, David Écija   +11 more
wiley   +2 more sources

Nanographene‐Based van der Waals Organic Framework With Permanent Porosity

Angewandte Chemie, Volume 138, Issue 27, 1 July 2026.
Unlocking record‐breaking porosity in a supramolecular organic framework (SOF). Through the strategic design of a C3‐symmetric nanographene, a robust supramolecular framework is achieved via exclusively weak van der Waals forces. This metal‐free scaffold reaches a benchmark BET surface area of 1108 m2 g−1 –the highest to date for this class–combining ...
Arturo Oró, Rubén Turo‐Cortés, Josefina Perles, José Sánchez Costa, Jesús M. Fernández‐García, Nazario Martín   +5 more
wiley   +2 more sources