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  1. Article ; Online: Understanding the Raman enhancement of carbon nanohorns labelled with organic dyes.

    Iglesias, Daniel / Martín, Raúl / Álvarez-Sánchez, Miguel Á / Badía-Domínguez, Irene / Vázquez, Ester / Carmen Ruiz Delgado, M / Prieto, Pilar / Antonia Herrero, M

    Nanoscale

    2023  Volume 15, Issue 29, Page(s) 12280–12286

    Abstract: Carbon nanohorns have been non-covalently functionalized with two different benzothiadiazoloquinoxalines ... ...

    Abstract Carbon nanohorns have been non-covalently functionalized with two different benzothiadiazoloquinoxalines prepared
    Language English
    Publishing date 2023-07-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d3nr01357j
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Preparation of Cellulose Nanocrystals: Controlling the Crystalline Type by One-Pot Acid Hydrolysis.

    Calvo, Víctor / Álvarez Sánchez, Miguel Á / Güemes, Lucas / Martínez-Barón, Carlos / Baúlde, Sandra / Criado, Alejandro / González-Domínguez, Jose M / Maser, Wolfgang K / Benito, Ana M

    ACS macro letters

    2023  Volume 12, Issue 2, Page(s) 152–158

    Abstract: Cellulose nanocrystals (CNCs) have aroused increasing interest owing to their renewable origin and excellent properties derived from their size and morphology. Based on their chain orientation, CNCs can be prepared as two main allomorphs (I or II). ... ...

    Abstract Cellulose nanocrystals (CNCs) have aroused increasing interest owing to their renewable origin and excellent properties derived from their size and morphology. Based on their chain orientation, CNCs can be prepared as two main allomorphs (I or II). However, achieving pure CNC allomorphs still requires enhanced control on the CNCs synthesis process and improved understanding of the involved reaction parameters. In this work, we study in detail a set of parameters for CNC synthesis using one-pot acid hydrolysis and evaluate their influence on the outcome with respect to yield, purity, and repeatability. We also demonstrate that a fast, nondestructive, and accurate methodology based on dynamic light scattering is an efficient alternative to the usual structural analysis of the synthesis outcome. Finally, we provide an improved protocol to reliably obtain each allomorph with mass yields of 25% for type I and 40% for type II. Emphasis is put on the reduction of the environmental impact and the overall preparation time.
    Language English
    Publishing date 2023-01-13
    Publishing country United States
    Document type Journal Article
    ISSN 2161-1653
    ISSN (online) 2161-1653
    DOI 10.1021/acsmacrolett.2c00705
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Effect of nanocellulose polymorphism on electrochemical analytical performance in hybrid nanocomposites with non-oxidized single-walled carbon nanotubes.

    Dortez, Silvia / Sierra, Tania / Álvarez-Sánchez, Miguel Á / González-Domínguez, José M / Benito, Ana M / Maser, Wolfgang K / Crevillen, Agustín G / Escarpa, Alberto

    Mikrochimica acta

    2022  Volume 189, Issue 2, Page(s) 62

    Abstract: Two cellulose nanocrystals/single-walled carbon nanotube (CNC/SW) hybrids, using two cellulose polymorphs, were evaluated as electrochemical transducers: CNC type I (CNC-I/SW) and CNC type II (CNC-II/SW). They were synthesized and fully characterized, ... ...

    Abstract Two cellulose nanocrystals/single-walled carbon nanotube (CNC/SW) hybrids, using two cellulose polymorphs, were evaluated as electrochemical transducers: CNC type I (CNC-I/SW) and CNC type II (CNC-II/SW). They were synthesized and fully characterized, and their analytical performance as electrochemical sensors was carefully studied. In comparison with SWCNT-based and screen-printed carbon electrodes, CNC/SW sensors showed superior electroanalytical performance in terms of sensitivity and selectivity, not only in the detection of small metabolites (uric acid, dopamine, and tyrosine) but also in the detection of complex glycoproteins (alpha-1-acid glycoprotein (AGP)). More importantly, CNC-II/SW exhibited 20 times higher sensitivity than CNC-I/SW for AGP determination, yielding a LOD of 7 mg L
    MeSH term(s) Cellulose/chemistry ; Electrochemical Techniques/methods ; Molecular Structure ; Nanocomposites/chemistry ; Nanotubes, Carbon/chemistry
    Chemical Substances Nanotubes, Carbon ; Cellulose (9004-34-6)
    Language English
    Publishing date 2022-01-14
    Publishing country Austria
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 89-9
    ISSN 1436-5073 ; 0026-3672
    ISSN (online) 1436-5073
    ISSN 0026-3672
    DOI 10.1007/s00604-021-05161-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 56/171: Show issues
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  4. Article: Waterborne Graphene- and Nanocellulose-Based Inks for Functional Conductive Films and 3D Structures.

    González-Domínguez, Jose M / Baigorri, Alejandro / Álvarez-Sánchez, Miguel Á / Colom, Eduardo / Villacampa, Belén / Ansón-Casaos, Alejandro / García-Bordejé, Enrique / Benito, Ana M / Maser, Wolfgang K

    Nanomaterials (Basel, Switzerland)

    2021  Volume 11, Issue 6

    Abstract: In the vast field of conductive inks, graphene-based nanomaterials, including chemical derivatives such as graphene oxide as well as carbon nanotubes, offer important advantages as per their excellent physical properties. However, inks filled with carbon ...

    Abstract In the vast field of conductive inks, graphene-based nanomaterials, including chemical derivatives such as graphene oxide as well as carbon nanotubes, offer important advantages as per their excellent physical properties. However, inks filled with carbon nanostructures are usually based on toxic and contaminating organic solvents or surfactants, posing serious health and environmental risks. Water is the most desirable medium for any envisioned application, thus, in this context, nanocellulose, an emerging nanomaterial, enables the dispersion of carbon nanomaterials in aqueous media within a sustainable and environmentally friendly scenario. In this work, we present the development of water-based inks made of a ternary system (graphene oxide, carbon nanotubes and nanocellulose) employing an autoclave method. Upon controlling the experimental variables, low-viscosity inks, high-viscosity pastes or self-standing hydrogels can be obtained in a tailored way. The resulting inks and pastes are further processed by spray- or rod-coating technologies into conductive films, and the hydrogels can be turned into aerogels by freeze-drying. The film properties, with respect to electrical surface resistance, surface morphology and robustness, present favorable opportunities as metal-free conductive layers in liquid-phase processed electronic device structures.
    Language English
    Publishing date 2021-05-29
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano11061435
    Database MEDical Literature Analysis and Retrieval System OnLINE

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