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      Smart Hydrogels Meet Carbon Nanomaterials for New Frontiers in Medicine

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          Abstract

          Carbon nanomaterials include diverse structures and morphologies, such as fullerenes, nano-onions, nanodots, nanodiamonds, nanohorns, nanotubes, and graphene-based materials. They have attracted great interest in medicine for their high innovative potential, owing to their unique electronic and mechanical properties. In this review, we describe the most recent advancements in their inclusion in hydrogels to yield smart systems that can respond to a variety of stimuli. In particular, we focus on graphene and carbon nanotubes, for applications that span from sensing and wearable electronics to drug delivery and tissue engineering.

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          Broad family of carbon nanoallotropes: classification, chemistry, and applications of fullerenes, carbon dots, nanotubes, graphene, nanodiamonds, and combined superstructures.

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            Carbon Dots: A New Type of Carbon-Based Nanomaterial with Wide Applications

            Carbon dots (CDs), as a new type of carbon-based nanomaterial, have attracted broad research interest for years, because of their diverse physicochemical properties and favorable attributes like good biocompatibility, unique optical properties, low cost, ecofriendliness, abundant functional groups (e.g., amino, hydroxyl, carboxyl), high stability, and electron mobility. In this Outlook, we comprehensively summarize the classification of CDs based on the analysis of their formation mechanism, micro-/nanostructure and property features, and describe their synthetic methods and optical properties including strong absorption, photoluminescence, and phosphorescence. Furthermore, the recent significant advances in diverse applications, including optical (sensor, anticounterfeiting), energy (light-emitting diodes, catalysis, photovoltaics, supercapacitors), and promising biomedicine, are systematically highlighted. Finally, we envisage the key issues to be challenged, future research directions, and perspectives to show a full picture of CDs-based materials.
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              Conductive Polymers: Opportunities and Challenges in Biomedical Applications

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                Author and article information

                Contributors
                Role: Academic Editor
                Role: Academic Editor
                Journal
                Biomedicines
                Biomedicines
                biomedicines
                Biomedicines
                MDPI
                2227-9059
                18 May 2021
                May 2021
                : 9
                : 5
                : 570
                Affiliations
                [1 ]Chemical and Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy; simone.adorinni@ 123456phd.units.it (S.A.); petr.rozhin@ 123456phd.units.it (P.R.)
                [2 ]National Interuniversity Consortium of Materials Science and Technology (INSTM), University of Trieste, 34127 Trieste, Italy
                Author notes
                [* ]Correspondence: smarchesan@ 123456units.it
                Author information
                https://orcid.org/0000-0002-6888-7635
                https://orcid.org/0000-0001-6089-3873
                Article
                biomedicines-09-00570
                10.3390/biomedicines9050570
                8158376
                34070138
                1976563a-1d97-4359-a9dc-4369f4e60ddf
                © 2021 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( https://creativecommons.org/licenses/by/4.0/).

                History
                : 27 April 2021
                : 15 May 2021
                Categories
                Review

                hydrogels,carbon nanotubes,graphene,carbon nanomaterials,nanostructures,wearable electronics,drug delivery,tissue engineering,regenerative medicine

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