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  1. Article ; Online: A Dimeric Thiourea CSA for the Enantiodiscrimination of Amino Acid Derivatives by NMR Spectroscopy.

    Recchimurzo, Alessandra / Micheletti, Cosimo / Uccello-Barretta, Gloria / Balzano, Federica

    The Journal of organic chemistry

    2021  Volume 86, Issue 11, Page(s) 7381–7389

    Abstract: The reaction of benzoyl isothiocyanate with ( ... ...

    Abstract The reaction of benzoyl isothiocyanate with (1
    MeSH term(s) Amino Acids ; Magnetic Resonance Spectroscopy ; Molecular Conformation ; Stereoisomerism ; Thiourea
    Chemical Substances Amino Acids ; Thiourea (GYV9AM2QAG)
    Language English
    Publishing date 2021-05-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.1c00340
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4473: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  2. Article ; Online: Remarkable near-infrared chiroptical properties of chiral Yb, Tm and Er complexes.

    Willis, Oliver G / Zinna, Francesco / Pescitelli, Gennaro / Micheletti, Cosimo / Di Bari, Lorenzo

    Dalton transactions (Cambridge, England : 2003)

    2022  Volume 51, Issue 2, Page(s) 518–523

    Abstract: We carried out a study of absorption (CD) and emission (CPL) chiroptical properties in the NIR region of two sets of Yb, Tm and Er complexes. The two complexes include ... ...

    Abstract We carried out a study of absorption (CD) and emission (CPL) chiroptical properties in the NIR region of two sets of Yb, Tm and Er complexes. The two complexes include a
    Language English
    Publishing date 2022-01-04
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/d1dt03843e
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Effect of Polymer Composition on the Optical Properties of a New Aggregation-Induced Emission Fluorophore: A Combined Experimental and Computational Approach.

    Picchi, Alberto / Wang, Qinfan / Ventura, Francesco / Micheletti, Cosimo / Heijkoop, Jesse / Picchioni, Francesco / Ciofini, Ilaria / Adamo, Carlo / Pucci, Andrea

    Polymers

    2023  Volume 15, Issue 17

    Abstract: Nowadays, fluorophores with a tetraphenylethylene (TPE) core are considered interesting due to the aggregation-induced emission (AIE) behavior that enables their effective use in polymer films. We propose a novel TPE fluorophore ( ...

    Abstract Nowadays, fluorophores with a tetraphenylethylene (TPE) core are considered interesting due to the aggregation-induced emission (AIE) behavior that enables their effective use in polymer films. We propose a novel TPE fluorophore (
    Language English
    Publishing date 2023-08-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym15173530
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: A Dimeric Thiourea CSA for the Enantiodiscrimination of Amino Acid Derivatives by NMR Spectroscopy

    Recchimurzo, Alessandra / Micheletti, Cosimo / Uccello-Barretta, Gloria / Balzano, Federica

    Journal of organic chemistry. 2021 May 21, v. 86, no. 11

    2021  

    Abstract: The reaction of benzoyl isothiocyanate with (1R,2R)-1,2-bis(2-hydroxyphenyl)ethylenediamine afforded a new thiourea chiral solvating agent (CSA) with a very high ability to differentiate ¹H and ¹³C NMR signals of simple amino acid derivatives, even at ... ...

    Abstract The reaction of benzoyl isothiocyanate with (1R,2R)-1,2-bis(2-hydroxyphenyl)ethylenediamine afforded a new thiourea chiral solvating agent (CSA) with a very high ability to differentiate ¹H and ¹³C NMR signals of simple amino acid derivatives, even at low concentrations. The enantiodiscrimination efficiency was higher with respect to that of the parent monomer, a thiourea derivative of 2-((1R)-1-aminoethyl)phenol, thus putting into light the relevance of the cooperativity between the two molecular portions of the dimer in a cleft conformation stabilized by interchain hydrogen bond interactions. An achiral base additive (DABCO or DMAP) played an active role in the chiral discrimination processes, mediating the interaction between the CSA and the enantiomeric mixtures. The chiral discrimination mechanism was investigated by NMR spectroscopy through the determination of complexation stoichiometries, association constants, and the stereochemistry of the diastereomeric solvates.
    Keywords amino acids ; ethylenediamines ; hydrogen bonding ; isothiocyanates ; nuclear magnetic resonance spectroscopy ; organic chemistry ; stereochemistry ; thiourea
    Language English
    Dates of publication 2021-0521
    Size p. 7381-7389.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.1c00340
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 4' 49/42: Show issues
    Z 7.1: Show issues

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  5. Article ; Online: Thiourea Derivative of 2-[(1

    Recchimurzo, Alessandra / Micheletti, Cosimo / Uccello-Barretta, Gloria / Balzano, Federica

    The Journal of organic chemistry

    2020  Volume 85, Issue 8, Page(s) 5342–5350

    Abstract: Thiourea derivatives of 2-[( ... ...

    Abstract Thiourea derivatives of 2-[(1
    Language English
    Publishing date 2020-03-30
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.0c00027
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4473: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  6. Article ; Online: Orange/Red Benzo[1,2-

    Bartolini, Matteo / Micheletti, Cosimo / Picchi, Alberto / Coppola, Carmen / Sinicropi, Adalgisa / Di Donato, Mariangela / Foggi, Paolo / Mordini, Alessandro / Reginato, Gianna / Pucci, Andrea / Zani, Lorenzo / Calamante, Massimo

    ACS applied energy materials

    2023  Volume 6, Issue 9, Page(s) 4862–4880

    Abstract: Luminescent solar concentrators (LSCs) are a class of optical devices able to harvest, downshift, and concentrate sunlight, thanks to the presence of emitting materials embedded in a polymer matrix. Use of LSCs in combination with silicon-based ... ...

    Abstract Luminescent solar concentrators (LSCs) are a class of optical devices able to harvest, downshift, and concentrate sunlight, thanks to the presence of emitting materials embedded in a polymer matrix. Use of LSCs in combination with silicon-based photovoltaic (PV) devices has been proposed as a viable strategy to enhance their ability to harvest diffuse light and facilitate their integration in the built environment. LSC performances can be improved by employing organic fluorophores with strong light absorption in the center of the solar spectrum and intense, red-shifted emission. In this work, we present the design, synthesis, characterization, and application in LSCs of a series of orange/red organic emitters featuring a benzo[1,2-
    Language English
    Publishing date 2023-04-20
    Publishing country United States
    Document type Journal Article
    ISSN 2574-0962
    ISSN (online) 2574-0962
    DOI 10.1021/acsaem.3c00362
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Mechanochromic LLDPE Films Doped with NIR Reflective Paliogen Black.

    Micheletti, Cosimo / Minei, Pierpaolo / Carlotti, Marco / Mattoli, Virgilio / Muniz-Miranda, Francesco / Perfetto, Anna / Ciofini, Ilaria / Adamo, Carlo / Ruggeri, Giacomo / Pucci, Andrea

    Macromolecular rapid communications

    2020  Volume 42, Issue 1, Page(s) e2000426

    Abstract: The perylene bisimide derivative Paliogen Black (P-black) is proposed as a new chromogenic probe that shows visible (vis) and near-infrared (NIR) responses after mechanical solicitations of host linear low-density polyethylene (LLDPE) films. P-black is ... ...

    Abstract The perylene bisimide derivative Paliogen Black (P-black) is proposed as a new chromogenic probe that shows visible (vis) and near-infrared (NIR) responses after mechanical solicitations of host linear low-density polyethylene (LLDPE) films. P-black is reported to display strong absorption in the vis spectrum and unusual reflective and cooling features in the NIR region. Uniaxial deformation of the 2.5, 5, and 10 wt% P-black/LLDPE films yields a dichroic absorption under polarized light with color variations attributed by the computational analysis to the distinct anisotropic behavior of the transition dipole moments of P-black chromophores. When LLDPE films are deformed, P-black aggregates reduce their size from ≈30-40 µm to ≈5-10 µm that, in turn, causes reflectivity losses of about 30-40% at the maximum elongation. This gives rise to warming of 5-6 °C of the locally oriented film placed in contact with a black substrate under the illumination with an IR lamp for 5 s. These features combined with the high sensitivity of the vis-NIR response toward mechanical solicitations render P-black as a new solution to detect uniaxial deformations of plastic films through both optical and thermal outputs.
    MeSH term(s) Plastics ; Polyethylene
    Chemical Substances Plastics ; Polyethylene (9002-88-4)
    Language English
    Publishing date 2020-10-21
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1475027-2
    ISSN 1521-3927 ; 1022-1336
    ISSN (online) 1521-3927
    ISSN 1022-1336
    DOI 10.1002/marc.202000426
    Database MEDical Literature Analysis and Retrieval System OnLINE

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