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  1. Article ; Online: Photophysics of a nucleic acid-protein crosslinking model strongly depends on solvation dynamics: an experimental and theoretical study.

    Iuzzolino, Gabriele / Perrella, Fulvio / Valadan, Mohammadhassan / Petrone, Alessio / Altucci, Carlo / Rega, Nadia

    Physical chemistry chemical physics : PCCP

    2024  Volume 26, Issue 15, Page(s) 11755–11769

    Abstract: We present a combined experimental and theoretical study of the photophysics of 5-benzyluracil (5BU) in methanol, which is a model system for interactions between nucleic acids and proteins. A molecular dynamics study of 5BU in solution through efficient ...

    Abstract We present a combined experimental and theoretical study of the photophysics of 5-benzyluracil (5BU) in methanol, which is a model system for interactions between nucleic acids and proteins. A molecular dynamics study of 5BU in solution through efficient DFT-based hybrid
    MeSH term(s) Nucleic Acids ; Molecular Dynamics Simulation ; Molecular Conformation ; Solvents ; Solutions
    Chemical Substances Nucleic Acids ; Solvents ; Solutions
    Language English
    Publishing date 2024-04-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d3cp06254f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Editorial: Nanobiophotonics and Related Novel Materials Aimed at Biosciences and Biomedicine.

    Altucci, Carlo / Kurapati, Rajendra / Morales-Narváez, Eden

    Frontiers in bioengineering and biotechnology

    2022  Volume 10, Page(s) 898752

    Language English
    Publishing date 2022-04-20
    Publishing country Switzerland
    Document type Editorial
    ZDB-ID 2719493-0
    ISSN 2296-4185
    ISSN 2296-4185
    DOI 10.3389/fbioe.2022.898752
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Periodic Surface Structuring of Copper with Spherical and Cylindrical Lenses.

    Hu, Meilin / Nivas, Jijil Jj / D'Andrea, Martina / Valadan, Mohammadhassan / Fittipaldi, Rosalba / Lettieri, Mariateresa / Vecchione, Antonio / Altucci, Carlo / Amoruso, Salvatore

    Nanomaterials (Basel, Switzerland)

    2023  Volume 13, Issue 6

    Abstract: The use of a cylindrical lens in femtosecond laser surface structuring is receiving attention to improve the processing efficiency. Here, we investigate the structures produced on a copper target, in air, by exploiting both spherical and cylindrical ... ...

    Abstract The use of a cylindrical lens in femtosecond laser surface structuring is receiving attention to improve the processing efficiency. Here, we investigate the structures produced on a copper target, in air, by exploiting both spherical and cylindrical lenses for beam focusing, aiming at elucidating similarities and differences of the two approaches. The morphological features of the surface structures generated by ≈180 fs laser pulses at 1030 nm over areas of 8 × 8 mm
    Language English
    Publishing date 2023-03-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano13061005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Book ; Conference proceedings: Special issue: Ultra-fast dynamic imaging of matter

    Altucci, Carlo

    selected papers from the 2nd international conference, 30 April - 3 May 2009 ; [UDIM09, Ischia Island, Naples, Italy]

    (Journal of modern optics ; 57.2010,11)

    2010  

    Title variant Ultra-fast dynamic imaging of matter
    Event/congress International Conference on Ultra-Fast Dynamic Imaging of Matter (2, 2009.04.30-05.03, IschiaIsland) ; UDIM (2, 2009.04.30-05.03, IschiaIsland)
    Author's details ed. by Carlo Altucci
    Series title Journal of modern optics ; 57.2010,11
    Language English
    Size S. 915 - 1013
    Publisher Taylor & Francis
    Publishing place Abingdon
    Document type Book ; Conference proceedings
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  5. Article: Single-Cell Photothermal Analysis Induced by MoS

    Rusciano, Giulia / Capaccio, Angela / Sasso, Antonio / Singh, Manjot / Valadan, Mohammadhassan / Dell'Aversana, Carmela / Altucci, Lucia / Altucci, Carlo

    Frontiers in bioengineering and biotechnology

    2022  Volume 10, Page(s) 844011

    Abstract: Two-dimensional nanomaterials, such as ... ...

    Abstract Two-dimensional nanomaterials, such as MoS
    Language English
    Publishing date 2022-03-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2719493-0
    ISSN 2296-4185
    ISSN 2296-4185
    DOI 10.3389/fbioe.2022.844011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: The Effectiveness of Cyrene as a Solvent in Exfoliating 2D TMDs Nanosheets.

    Adam, Jaber / Singh, Manjot / Abduvakhidov, Avazbek / Del Sorbo, Maria Rosaria / Feoli, Chiara / Hussain, Fida / Kaur, Jasneet / Mirabella, Antonia / Rossi, Manuela / Sasso, Antonio / Valadan, Mohammadhassan / Varra, Michela / Rusciano, Giulia / Altucci, Carlo

    International journal of molecular sciences

    2023  Volume 24, Issue 13

    Abstract: The pursuit of environmentally friendly solvents has become an essential research topic in sustainable chemistry and nanomaterial science. With the need to substitute toxic solvents in nanofabrication processes becoming more pressing, the search for ... ...

    Abstract The pursuit of environmentally friendly solvents has become an essential research topic in sustainable chemistry and nanomaterial science. With the need to substitute toxic solvents in nanofabrication processes becoming more pressing, the search for alternative solvents has taken on a crucial role in this field. Additionally, the use of toxic, non-economical organic solvents, such as N-methyl-2 pyrrolidone and dimethylformamide, is not suitable for all biomedical applications, even though these solvents are often considered as the best exfoliating agents for nanomaterial fabrication. In this context, the success of producing two-dimensional transition metal dichalcogenides (2D TMDs), such as MoS
    MeSH term(s) Solvents ; Molybdenum/chemistry ; Transition Elements/chemistry ; Nanostructures/chemistry
    Chemical Substances Solvents ; Molybdenum (81AH48963U) ; Transition Elements
    Language English
    Publishing date 2023-06-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms241310450
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: DNA Mutations via Chern-Simons Currents.

    Bajardi, Francesco / Altucci, Lucia / Benedetti, Rosaria / Capozziello, Salvatore / Sorbo, Maria Rosaria Del / Franci, Gianluigi / Altucci, Carlo

    European physical journal plus

    2021  Volume 136, Issue 10, Page(s) 1080

    Abstract: We test the validity of a possible schematization of DNA structure and dynamics based on the Chern-Simons theory, that is a topological field theory mostly considered in the context of effective gravity theories. By means of the expectation value of the ... ...

    Abstract We test the validity of a possible schematization of DNA structure and dynamics based on the Chern-Simons theory, that is a topological field theory mostly considered in the context of effective gravity theories. By means of the expectation value of the Wilson Loop, derived from this analogue gravity approach, we find the point-like curvature of genomic strings in KRAS human gene and COVID-19 sequences, correlating this curvature with the genetic mutations. The point-like curvature profile, obtained by means of the Chern-Simons currents, can be used to infer the position of the given mutations within the genetic string. Generally, mutations take place in the highest Chern-Simons current gradient locations and subsequent mutated sequences appear to have a smoother curvature than the initial ones, in agreement with a free energy minimization argument.
    Language English
    Publishing date 2021-10-28
    Publishing country Germany
    Document type Journal Article
    ISSN 2190-5444
    ISSN (online) 2190-5444
    DOI 10.1140/epjp/s13360-021-01960-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Green synthesis of luminescent and defect-free bio-nanosheets of MoS2: interfacing two-dimensional crystals with hydrophobins

    Kaur, Jasneet / Gravagnuolo, Alfredo Maria / Maddalena, Pasqualino / Altucci, Carlo / Giardina, Paola / Gesuele, Felice

    RSC advances. 2017 Apr. 25, v. 7, no. 36

    2017  

    Abstract: Solution processing and biofunctionalization of two-dimensional crystals are pivotal for their (biomedical) applications. Here we interface ultrathin layers of MoS2 with the surface active and self-assembling fungal proteins named Vmh2, which belong to ... ...

    Abstract Solution processing and biofunctionalization of two-dimensional crystals are pivotal for their (biomedical) applications. Here we interface ultrathin layers of MoS2 with the surface active and self-assembling fungal proteins named Vmh2, which belong to the hydrophobin family. We produce few-layered biofunctionalized MoS2 (bio-MoS2) nanosheets via liquid phase exfoliation in a green solvent, and controlled centrifugation; a low-cost and eco-friendly process. The dispersions are investigated by electrophoretic mobility, atomic force microscopy (AFM), UV-Vis, Raman and photoluminescence (PL) spectroscopy. The nanosheets present a defect-free vibrational spectrum, tunable zeta-potential and their photoluminescence is preserved after non-covalent biofunctionalization making them well suited for various biomedical applications.
    Keywords Raman spectroscopy ; atomic force microscopy ; centrifugation ; crystals ; dispersions ; electrophoresis ; hydrophobins ; liquids ; molybdenum disulfide ; nanosheets ; photoluminescence ; solvents ; ultraviolet-visible spectroscopy ; zeta potential
    Language English
    Dates of publication 2017-0425
    Size p. 22400-22408.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ISSN 2046-2069
    DOI 10.1039/c7ra01680h
    Database NAL-Catalogue (AGRICOLA)

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  9. Article ; Online: A systematic study of the valence electronic structure of cyclo(Gly-Phe), cyclo(Trp-Tyr) and cyclo(Trp-Trp) dipeptides in the gas phase.

    Molteni, Elena / Mattioli, Giuseppe / Alippi, Paola / Avaldi, Lorenzo / Bolognesi, Paola / Carlini, Laura / Vismarra, Federico / Wu, Yingxuan / Varillas, Rocio Borrego / Nisoli, Mauro / Singh, Manjot / Valadan, Mohammadhassan / Altucci, Carlo / Richter, Robert / Sangalli, Davide

    Physical chemistry chemical physics : PCCP

    2021  Volume 23, Issue 47, Page(s) 26793–26805

    Abstract: The electronic energy levels of cyclo(glycine-phenylalanine), cyclo(tryptophan-tyrosine) and cyclo(tryptophan-tryptophan) dipeptides are investigated with a joint experimental and theoretical approach. Experimentally, valence photoelectron spectra in the ...

    Abstract The electronic energy levels of cyclo(glycine-phenylalanine), cyclo(tryptophan-tyrosine) and cyclo(tryptophan-tryptophan) dipeptides are investigated with a joint experimental and theoretical approach. Experimentally, valence photoelectron spectra in the gas phase are measured using VUV radiation. Theoretically, we first obtain low-energy conformers through an automated conformer-rotamer ensemble sampling scheme based on tight-binding simulations. Then, different first principles computational schemes are considered to simulate the spectra: Hartree-Fock (HF), density functional theory (DFT) within the B3LYP approximation, the quasi-particle GW correction, and the quantum-chemistry CCSD method. Theory allows assignment of the main features of the spectra. A discussion on the role of electronic correlation is provided, by comparing computationally cheaper DFT scheme (and GW) results with the accurate CCSD method.
    MeSH term(s) Density Functional Theory ; Dipeptides/chemistry ; Electrons ; Gases/chemistry ; Oligopeptides/chemistry ; Peptides, Cyclic/chemistry ; Phenylalanine/chemistry ; Tryptophan/chemistry
    Chemical Substances Dipeptides ; Gases ; Oligopeptides ; Peptides, Cyclic ; cyclo(tryptophyl-tryptophyl) ; Phenylalanine (47E5O17Y3R) ; glycylphenylalanine (721-66-4) ; Tryptophan (8DUH1N11BX)
    Language English
    Publishing date 2021-12-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d1cp04050b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Analysis of simulated fluorescence intensities decays by a new maximum entropy method algorithm.

    Esposito, Rosario / Altucci, Carlo / Velotta, Raffaele

    Journal of fluorescence

    2012  Volume 23, Issue 1, Page(s) 203–211

    Abstract: A new algorithm for the Maximum Entropy Method (MEM) is proposed for recovering the lifetime distribution in time-resolved fluorescence decays. The procedure is based on seeking the distribution that maximizes the Skilling entropy function subjected to ... ...

    Abstract A new algorithm for the Maximum Entropy Method (MEM) is proposed for recovering the lifetime distribution in time-resolved fluorescence decays. The procedure is based on seeking the distribution that maximizes the Skilling entropy function subjected to the chi-squared constraint χ(2) ~ 1 through iterative linear approximations, LU decomposition of the Hessian matrix of the lagrangian problem and the Golden Section Search for backtracking. The accuracy of this algorithm has been investigated through comparisons with simulated fluorescence decays both of narrow and broad lifetime distributions. The proposed approach is capable to analyse datasets of up to 4,096 points with a discretization ranging from 100 to 1,000 lifetimes. A good agreement with non linear fitting estimates has been observed when the method has been applied to multi-exponential decays. Remarkable results have been also obtained for the broad lifetime distributions where the position is recovered with high accuracy and the distribution width is estimated within 3%. These results indicate that the procedure proposed generates MEM lifetime distributions that can be used to quantify the real heterogeneity of lifetimes in a sample.
    MeSH term(s) Algorithms ; Entropy ; Normal Distribution ; Spectrometry, Fluorescence/methods ; Statistics as Topic/methods ; Time Factors
    Language English
    Publishing date 2012-10-19
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2016892-5
    ISSN 1573-4994 ; 1053-0509
    ISSN (online) 1573-4994
    ISSN 1053-0509
    DOI 10.1007/s10895-012-1135-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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