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  1. Article ; Online: In memoriam: Prof Christopher J Froelich (1951-2015).

    Metkar, S S / Pardo, J / Anderluh, G / Salvesen, G / Trapani, J A / Simon, M M

    Cell death and differentiation

    2016  Volume 23, Issue 1, Page(s) 3–4

    MeSH term(s) Biochemistry/history ; History, 20th Century ; History, 21st Century ; Humans
    Language English
    Publishing date 2016-01
    Publishing country England
    Document type Biography ; Historical Article ; Journal Article
    ZDB-ID 1225672-9
    ISSN 1476-5403 ; 1350-9047
    ISSN (online) 1476-5403
    ISSN 1350-9047
    DOI 10.1038/cdd.2015.141
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4230: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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    Jg. 1995 - 2021: Lesesall (2.OG)
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    Zs.MG 80: Show issues

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  2. Article: Influence of Magnetic Micelles on Assembly and Deposition of Porphyrin J-Aggregates.

    Castriciano, Maria Angela / Trapani, Mariachiara / Romeo, Andrea / Depalo, Nicoletta / Rizzi, Federica / Fanizza, Elisabetta / Patanè, Salvatore / Monsù Scolaro, Luigi

    Nanomaterials (Basel, Switzerland)

    2020  Volume 10, Issue 2

    Abstract: Clusters of superparamagnetic iron oxide nanoparticles (SPIONs) have been incorporated into the hydrophobic core of polyethylene glycol (PEG)-modified phospholipid micelles. Two different PEG-phospholipids have been selected to guarantee water solubility ...

    Abstract Clusters of superparamagnetic iron oxide nanoparticles (SPIONs) have been incorporated into the hydrophobic core of polyethylene glycol (PEG)-modified phospholipid micelles. Two different PEG-phospholipids have been selected to guarantee water solubility and provide an external corona, bearing neutral (SPIONs@PEG-micelles) or positively charged amino groups (SPIONs@NH
    Language English
    Publishing date 2020-01-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano10020187
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  3. Article ; Online: Kinetic Investigation on Tetrakis(4-Sulfonatophenyl)Porphyrin J-Aggregates Formation Catalyzed by Cationic Metallo-Porphyrins.

    Occhiuto, Ilaria Giuseppina / Zagami, Roberto / Trapani, Mariachiara / Castriciano, Maria Angela / Romeo, Andrea / Scolaro, Luigi Monsù

    Molecules (Basel, Switzerland)

    2020  Volume 25, Issue 23

    Abstract: Under mild acidic conditions, various metal derivatives of tetrakis(4- ...

    Abstract Under mild acidic conditions, various metal derivatives of tetrakis(4-
    MeSH term(s) Catalysis/drug effects ; Cations/chemistry ; Circular Dichroism/methods ; Kinetics ; Light ; Metalloporphyrins/chemistry ; Porphyrins/chemistry ; Spectrophotometry, Ultraviolet/methods ; Water/chemistry
    Chemical Substances Cations ; Metalloporphyrins ; Porphyrins ; Water (059QF0KO0R) ; tetraphenylporphine sulfonate (35218-75-8)
    Language English
    Publishing date 2020-12-05
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules25235742
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    In stock of ZB MED Cologne/Königswinter

    Zs.MO 81: Show issues

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  4. Article ; Online: Mechanism for Copper(II)-Mediated Disaggregation of a Porphyrin J-Aggregate.

    Trapani, Mariachiara / Occhiuto, Ilaria G / Zagami, Roberto / De Luca, Giovanna / Castriciano, Maria A / Romeo, Andrea / Scolaro, Luigi Monsù / Pasternack, Robert F

    ACS omega

    2018  Volume 3, Issue 12, Page(s) 18843–18848

    Abstract: J-aggregates of anionic ...

    Abstract J-aggregates of anionic
    Language English
    Publishing date 2018-12-31
    Publishing country United States
    Document type Journal Article
    ISSN 2470-1343
    ISSN (online) 2470-1343
    DOI 10.1021/acsomega.8b02913
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  5. Article ; Online: Controlling J-Aggregates Formation and Chirality Induction through Demetallation of a Zinc(II) Water Soluble Porphyrin.

    Occhiuto, Ilaria Giuseppina / Castriciano, Maria Angela / Trapani, Mariachiara / Zagami, Roberto / Romeo, Andrea / Pasternack, Robert F / Monsù Scolaro, Luigi

    International journal of molecular sciences

    2020  Volume 21, Issue 11

    Abstract: Under acidic conditions and at high ionic strength, the zinc cation is removed from its metal complex with 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin ( ... ...

    Abstract Under acidic conditions and at high ionic strength, the zinc cation is removed from its metal complex with 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS
    MeSH term(s) Cations ; Circular Dichroism ; Electrons ; Hydrogen-Ion Concentration ; Ions ; Kinetics ; Light ; Porphyrins/chemistry ; Salts ; Scattering, Radiation ; Solubility ; Spectrophotometry, Ultraviolet ; Stereoisomerism ; Temperature ; Zinc/chemistry
    Chemical Substances Cations ; Ions ; Porphyrins ; Salts ; tetraphenylporphine sulfonate (35218-75-8) ; Zinc (J41CSQ7QDS)
    Language English
    Publishing date 2020-06-03
    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/ijms21114001
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  6. Article ; Online: Influence of Magnetic Micelles on Assembly and Deposition of Porphyrin J-Aggregates

    Maria Angela Castriciano / Mariachiara Trapani / Andrea Romeo / Nicoletta Depalo / Federica Rizzi / Elisabetta Fanizza / Salvatore Patanè / Luigi Monsù Scolaro

    Nanomaterials, Vol 10, Iss 2, p

    2020  Volume 187

    Abstract: ... 5,10,15,20-tetrakis-(4-sulfonatophenyl)-porphyrin (TPPS) forms chiral J-aggregates, and ... whereas PF protocol is effective with the charged SPIONs@NH 2 -PEG-micelles. In both cases, chiral J ...

    Abstract Clusters of superparamagnetic iron oxide nanoparticles (SPIONs) have been incorporated into the hydrophobic core of polyethylene glycol (PEG)-modified phospholipid micelles. Two different PEG-phospholipids have been selected to guarantee water solubility and provide an external corona, bearing neutral (SPIONs@PEG-micelles) or positively charged amino groups (SPIONs@NH 2 -PEG-micelles). Under acidic conditions and with specific mixing protocols (porphyrin first, PF, or porphyrin last, PL), the water-soluble 5,10,15,20-tetrakis-(4-sulfonatophenyl)-porphyrin (TPPS) forms chiral J-aggregates, and in the presence of the two different types of magnetic micelles, an increase of the aggregation rates has been generally observed. In the case of the neutral SPIONs@PEG-micelles, PL protocol affords a stable nanosystem, whereas PF protocol is effective with the charged SPIONs@NH 2 -PEG-micelles. In both cases, chiral J-aggregates embedded into the magnetic micelles (TPPS@SPIONs@micelles) have been characterized in solution through UV/vis absorption and circular/linear dichroism. An external magnetic field allows depositing films of the TPPS@SPIONs@micelles that retain their chiroptical properties and exhibit a high degree of alignment, which is also confirmed by atomic force microscopy.
    Keywords spion ; porphyrin ; chirality ; self-assembly ; hybrid nanosystems ; Chemistry ; QD1-999
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Corrigendum to "Fourier-space TEM reconstructions with symmetry adapted functions for all rotational point groups" [J. Struct. Biol. 182 (2013) 87-92].

    Trapani, Stefano / Navaza, Jorge

    Journal of structural biology

    2019  Volume 209, Issue 2, Page(s) 107410

    Language English
    Publishing date 2019-11-08
    Publishing country United States
    Document type Published Erratum
    ZDB-ID 1032718-6
    ISSN 1095-8657 ; 1047-8477
    ISSN (online) 1095-8657
    ISSN 1047-8477
    DOI 10.1016/j.jsb.2019.107410
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1428: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
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  8. Article: Novel Nanohybrids Based on Supramolecular Assemblies of Meso-tetrakis-(4-sulfonatophenyl) Porphyrin J-aggregates and Amine-Functionalized Carbon Nanotubes.

    Trapani, Mariachiara / Mazzaglia, Antonino / Piperno, Anna / Cordaro, Annalaura / Zagami, Roberto / Castriciano, Maria Angela / Romeo, Andrea / Monsù Scolaro, Luigi

    Nanomaterials (Basel, Switzerland)

    2020  Volume 10, Issue 4

    Abstract: ... chains of different length (ethylenediamine, EDA and tetraethylenepentamine, EPA) to induce the J ... for chain) is effective in inducing J-aggregation using different mixing protocols. These nanohybrids have ... or bundles of MWCNTs in contact with TPPS J-aggregates nanotubes. The nanohybrids are quite stable ...

    Abstract The ability of multiwalled carbon nanotubes (MWCNTs) covalently functionalized with polyamine chains of different length (ethylenediamine, EDA and tetraethylenepentamine, EPA) to induce the J-aggregation of meso-tetrakis(4-sulfonatophenyl)porphyrin (TPPS) was investigated in different experimental conditions. Under mild acidic conditions, protonated amino groups allow for the assembly by electrostatic interaction with the diacid form of TPPS, leading to hybrid nanomaterials. The presence of only one pendant amino group for a chain in EDA does not lead to any aggregation, whereas EPA (with four amine groups for chain) is effective in inducing J-aggregation using different mixing protocols. These nanohybrids have been characterized through UV/Vis extinction, fluorescence emission, resonance light scattering, and circular dichroism spectroscopy. Their morphology and chemical composition have been elucidated through transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM). TEM and STEM analysis evidence single or bundles of MWCNTs in contact with TPPS J-aggregates nanotubes. The nanohybrids are quite stable for days, even in aqueous solutions mimicking physiological medium (NaCl 0.15 M). This property, together with their peculiar optical features in the therapeutic window of visible spectrum, make them potentially useful for biomedical applications.
    Language English
    Publishing date 2020-04-02
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano10040669
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  9. Article ; Online: The role of counter-anions in the kinetics and chirality of porphyrin J-aggregates.

    Occhiuto, I G / Zagami, R / Trapani, M / Bolzonello, L / Romeo, A / Castriciano, M A / Collini, E / Monsù Scolaro, L

    Chemical communications (Cambridge, England)

    2016  Volume 52, Issue 77, Page(s) 11520–11523

    Abstract: Kinetics of the growth of ... ...

    Abstract Kinetics of the growth of TPPS
    Language English
    Publishing date 2016-09-20
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/c6cc05768c
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  10. Article ; Online: Kinetic Investigation on Tetrakis(4-Sulfonatophenyl)Porphyrin J-Aggregates Formation Catalyzed by Cationic Metallo-Porphyrins

    Ilaria Giuseppina Occhiuto / Roberto Zagami / Mariachiara Trapani / Maria Angela Castriciano / Andrea Romeo / Luigi Monsù Scolaro

    Molecules, Vol 25, Iss 5742, p

    2020  Volume 5742

    Abstract: ... porphyrin (H 2 TPPS 4 ) into J-aggregates. The aggregation kinetics have been treated according to a well ... aggregated samples obtained at the highest catalyst concentration exhibit a negative Cotton effect in the J ...

    Abstract Under mild acidic conditions, various metal derivatives of tetrakis(4- N -methylpyridinium)porphyrin (gold(III), AuT 4

    cobalt(III), CoT 4

    manganese(III), MnT 4 and zinc(II), ZnT 4 ) catalytically promote the supramolecular assembling process of the diacid 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (H 2 TPPS 4 ) into J-aggregates. The aggregation kinetics have been treated according to a well-established model that involves the initial formation of a critical nucleus containing m porphyrin units, followed by autocatalytic growth, in which the rate evolves as a power of time. An analysis of the extinction time traces allows to obtain the rate constants for the auto-catalyzed pathway, k c , and the number of porphyrins involved in the initial seeding. The aggregation kinetics have been investigated at fixed H 2 TPPS 4 concentration as a function of the added metal derivatives MT 4 . The derived rate constants, k c , obey a rate law that is first order in [MT 4 ] and depend on the specific nature of the catalyst in the order AuT 4 > CoT 4 > MnT 4 > ZnT 4 . Both resonance light scattering (RLS) intensity and extinction in the aggregated samples increase on increasing [MT 4 ]. With the exception of AuT 4 , the final aggregated samples obtained at the highest catalyst concentration exhibit a negative Cotton effect in the J-band region, evidencing the occurrence of spontaneous symmetry breaking. The role of the nature of the metal derivative in terms of overall charge and presence of axial groups will be discussed.
    Keywords J-aggregates ; aggregation kinetics ; chiral supramolecular assemblies ; symmetry breaking ; Organic chemistry ; QD241-441
    Subject code 290
    Language English
    Publishing date 2020-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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