Alessandra Operamolla

ORCID: 0000-0001-8527-0920
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About
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Research Areas
  • Advanced Cellulose Research Studies
  • Organic Electronics and Photovoltaics
  • Conducting polymers and applications
  • Molecular Junctions and Nanostructures
  • Photosynthetic Processes and Mechanisms
  • Photoreceptor and optogenetics research
  • Luminescence and Fluorescent Materials
  • Porphyrin and Phthalocyanine Chemistry
  • Advanced Sensor and Energy Harvesting Materials
  • Lignin and Wood Chemistry
  • Quantum Dots Synthesis And Properties
  • Catalytic Cross-Coupling Reactions
  • Perovskite Materials and Applications
  • Analytical Chemistry and Sensors
  • Microbial Fuel Cells and Bioremediation
  • Nanomaterials for catalytic reactions
  • Synthesis and Properties of Aromatic Compounds
  • Nanocomposite Films for Food Packaging
  • Advanced Memory and Neural Computing
  • Polysaccharides and Plant Cell Walls
  • Biofuel production and bioconversion
  • Electrohydrodynamics and Fluid Dynamics
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Photochromic and Fluorescence Chemistry
  • Lipid Membrane Structure and Behavior

University of Pisa
2020-2025

Consorzio Interuniversitario Reattività Chimica e Catalisi
2022-2024

Industriale Chimica (Italy)
2021

Ospedale San Giuseppe
2021

University of Bari Aldo Moro
2011-2020

Institute for the Chemistry of OrganoMetallic Compounds
2007-2016

Institute of Inorganic Methodologies and Plasmas
2011

Abstract Paper is a flexible material, commonly used for information storage, writing, packaging, or specialized purposes. It also has strong appeal as substrate in the field of printed electronics. Many applications, including safety, merchandising, smart labels/packing, and chemical/biomedical sensors, require an energy source to power operation. Here, progress regarding development photovoltaic storage devices on cellulosic substrates, where one more main material layers are deposited via...

10.1002/adfm.201806798 article EN Advanced Functional Materials 2019-01-30

While piezoelectric sensing and energy-harvesting devices still largely rely on inorganic components, biocompatible biodegradable materials, such as cellulose nanocrystals, might constitute optimal sustainable building blocks for a variety of applications in electronics transient implants. To this aim, however, effective methods are needed to position nanocrystals large high-performance architectures. Here, we report scalable assemblies multilayered systems with exceptional response, various...

10.1126/sciadv.ads0778 article EN cc-by-nc Science Advances 2025-01-15

Abstract Organic field‐effect transistors (OFETs) are key devices in organic electronics, and their performances largely depend on molecular structure solid‐state organization of the π‐conjugated compounds used as semiconductors. This microreview reports several examples materials for OFET sensors, which have been selected to highlight basic criteria design together with synthetic logic driving development Versatile methodologies enable optimize properties by tailoring structures...

10.1002/ejoc.201001103 article EN European Journal of Organic Chemistry 2010-12-28

Direct arylation of 5-octylthieno[3,4-c]pyrrole-4,6-dione with a series functionalized aryl iodides via C–H bond activation is demonstrated in deep eutectic solvent made choline chloride and urea non-anhydrous conditions without exclusion air. This the first demonstration thiophene–aryl coupling direct solvents.

10.1021/acs.orglett.7b02114 article EN Organic Letters 2017-09-06

Abstract Cellulose nanocrystals are an important class of bio‐based crystalline nanostructures, finding application in several technological fields, including paper and textile coating, biocomposite engineering, biocatalysts immobilization, etc. This study explores enzymatic hydrolysis Avicel, using endoglucanase from Aspergillus niger , to find environmentally friendly method extract cellulose sources. Enzymatic has the advantage reduced energy consumption higher environmental friendliness...

10.1002/slct.202401511 article EN cc-by-nc-nd ChemistrySelect 2024-08-06

Infrared thermal activation (IRTA) is considered an efficient approach to accelerate reaction rates. We report the first example of application IRTA achieve surface functionalization cellulose nanocrystals (CNCs) in solvent-less conditions with epoxidized linoleic acid (ELA), synthesized by enzymatic using CaLB (lipase B from Candida antarctica) and H2O2. The final goal enhance hydrophobicity cellulosic surfaces bio-based materials, potential coating industry. extended delignified rice husk...

10.1002/cssc.202500164 article EN other-oa ChemSusChem 2025-03-07

Chemical manipulations of the photosynthetic bacterial reaction center for implementation this photoenzyme into bioelectronic devices are overviewed.

10.1039/c5tc00775e article EN Journal of Materials Chemistry C 2015-01-01

Light machine: The simplest photosynthetic protein able to convert sunlight into other energy forms is covalently functionalized with a tailored organic dye obtain fully functional hybrid complex that outperforms the natural system in light harvesting and conversion ability. Detailed facts of importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by authors. Please note: publisher...

10.1002/anie.201203404 article EN Angewandte Chemie International Edition 2012-09-26

We report on bioconjugation strategies to functionalize hydrogen-bonded pigment semiconductors with proteins, and demonstrate hybrid bioelectronics devices operating under aqueous conditions.

10.1039/c5tc00556f article EN cc-by Journal of Materials Chemistry C 2015-01-01

The photosynthetic reaction center (RC) from the Rhodobacter sphaeroides bacterium has been covalently bioconjugated with a NIR-emitting fluorophore (AE800) whose synthesis was specifically tailored to act as artificial antenna harvesting light in entire visible region. AE800 broad absorption spectrum peaks centered gaps of RC and its emission overlaps most intense bands, ensuring consistent increase protein optical cross section. covalent hybrid AE800-RC is stable fully functional. energy...

10.1021/acs.bioconjchem.6b00175 article EN Bioconjugate Chemistry 2016-06-01

An innovative consolidation strategy for degraded paper is presented based on the reversible application of cellulose nanocrystals as sustainable fillers to reinforce mechanical properties and resistance further degradation. The compatibility efficacy proposed treatment are assessed first pure paper, used a model, by reliable techniques such field emission scanning electron microscopy, atomic force tensile tests, X-ray powder diffraction, Fourier transform infrared spectroscopy, evidencing...

10.1021/acsami.1c15330 article EN ACS Applied Materials & Interfaces 2021-09-14

Single-walled carbon nanotubes (SWCNTs) were suspended in 1,2-dichloroethane by noncovalent functionalization with a low-band-gap conjugated polymer 1 alternating dialkoxyphenylene-bisthiophene units benzo[c][2,1,3]thiadiazole monomeric units. The 1/SWCNT blend was transferred onto different solid substrates the Langmuir-Schaefer deposition method, resulting films high percentage of aligned nanotubes. Photoelectrochemical characterization thin on indium-tin oxide showed benefits SWCNT...

10.1021/am403656k article EN ACS Applied Materials & Interfaces 2013-12-11

Cellulose nanopaper (CNP) features appealing properties, including transparency, flatness, a low thermal expansion coefficient and stability, often outperforming conventional paper. However, free-standing crystalline cellulose films usually swell in water or upon moisture sorption, compromising part of their outstanding properties. This remains major problem whenever working environment is required. Freestanding prepared by solution casting suspensions nanocrystals with an average width 10...

10.1039/c8sm00433a article EN Soft Matter 2018-01-01

Abstract Lignin is an abundant biopolymer deriving from industrial pulping processes of lignocellulosic biomass. Despite the huge amount yearly produced lignin waste, it finds scarce application as a fine material and usually destined to be combusted in thermochemical plants feed, with low efficiency, other processes. So far, use materials science limited by knowledge its molecular structure properties, depending also on isolation method. However, represents intriguing feedstock organic...

10.1002/adsu.202200285 article EN cc-by Advanced Sustainable Systems 2022-10-31

Abstract The surface functionalization of cellulose nanocrystals is presently considered a useful and straightforward tool for accessing very reliable biocompatible biodegradable nanostructures with tailored physical chemical properties. However, to date the fine characterization appendages introduced onto remains challenge, due low sensitivity displayed by most common techniques towards functionalization. In this paper, we demonstrate easy aliphatic aromatic amines, demonstrating tunability...

10.1002/ejoc.202201457 article EN cc-by-nc-nd European Journal of Organic Chemistry 2023-02-02

Self-assembled monolayers (SAMs) derived of 4-methoxy-terphenyl-3′′,5′′-dimethanethiol (TPDMT) and 4-methoxyterphenyl-4′′-methanethiol (TPMT) have been prepared by chemisorption from solution onto gold thin films nanoparticles. The SAMs characterized spectroscopic ellipsometry, Raman spectroscopy atomic force microscopy to determine their optical properties, namely the refractive index extinction coefficient, in an extended spectral range 0.75−6.5 eV. From analysis data, information on...

10.1021/la101082t article EN Langmuir 2010-04-30

In this work, a three-step approach to isolate the main components of lignocellulosic cardoon, lignin and cellulose, was investigated. The raw defatted biomass, Cynara cardunculus, after steam explosion subjected mild organosolv treatment extract soluble (L1). Then, enzymatic hydrolysis performed achieve decomposition saccharidic portion into monosaccharides residual (L2). fractionation conditions were optimized obtain as less degraded possible maximize yield hydrolysis. Furthermore, effect...

10.1021/acssuschemeng.2c06356 article EN cc-by ACS Sustainable Chemistry & Engineering 2023-01-25

Abstract Four pinaceae pine resins analyzed in this study: black pine, shore Baltic amber, and rosin demonstrate excellent dielectric properties, outstanding film forming, ease of processability from ethyl alcohol solutions. Their trap‐free nature allows fabrication virtually hysteresis‐free organic field effect transistors operating a low voltage window with stability under bias stress. Such green constituents represent an choice materials for applications targeting biocompatibility...

10.1002/gch2.202300062 article EN cc-by Global Challenges 2023-09-01

Cellulose nanopaper (CNP) has attracted much interest during the last decade as a new fascinating renewable and biodegradable substrate for printed electronics solar cells. Its outstanding optical mechanical properties make CNP ideal preparation of photovoltaic devices, since its high transparency haze favour absorption light from active layer cell. However, some advances need to be done in direction increasing stability humid environment without compromising remarkable advantages. This...

10.1155/2019/3057929 article EN cc-by International Journal of Photoenergy 2019-06-10

Organic materials are currently at the forefront of research within field nanoelectronics, aiming to offer a sustainable alternative existing technologies across variety applications, including memory storage.

10.1039/d4tc02229g article EN cc-by-nc Journal of Materials Chemistry C 2024-01-01

Abstract The interaction of circularly polarized (CP) light with chiral matter at different scales opens several possibilities manipulation in photonic and electronic devices. Here it is shown that a multilayer architecture, possible to take advantage the polarization‐selective reflection nematic arrangement cellulose nanocrystals strong intrinsic CP luminescence (CPL) various bands Eu complexes. In this way, both CPL total emission complex are modified depending on enantiomer applied...

10.1002/adom.202401714 article EN cc-by Advanced Optical Materials 2024-09-17
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