Interaction of porphyrins with PAMAM dendrimers in aqueous solution

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F07%3A00081118" target="_blank" >RIV/61388955:_____/07:00081118 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Interaction of porphyrins with PAMAM dendrimers in aqueous solution

Original language description

Anionic 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS) and 5,10,15,20-tetrakis(4-phosphonatophenyl)porphyrin (TPPP) are bound to PAMAM dendrimer, generation 5 (G5, 128 amine terminal groups), and cationic 5,10,15,20-tetrakis(N-methylpyridynium-4-yl)porphyrin (TMPyP) and 5,10,15,20-tetrakis(a-triphenylphosphonio-p-tolyl)porphyrin (TPPTP) to PAMAM dendrimer, generation 4.5 (G4.5, 128 carboxyl terminal groups). A positive charge of G5 induces preferably the formation of H-dimers with the face-to-face arrangement of the anionic porphyrin units. Protonation of the porphyrin rings within H-dimers occurs at pH below 2.5 and is followed by changing the aggregate structure. TPPS forms edge-to-edge aligned J-aggregates with a highly ordered structure. The structure of J-aggregates formed from TPPP is more random. Whereas TMPyP is bound to G4.5 as monomer, TPPTP aggregates on the G4.5 surface. TPPTP aggregates dissociate at pH below 3 due to protonation of the porphyrin ring.

Czech name

Interakce porfyrinů s PAMAM dendrimery ve vodném roztoku

Czech description

V práci je popsána interakce mezi porfyriny (kationickými a anionickými) a PAMAM dendrimery generalce 5.0 a 4.5 v závislosti ma pH roztoku.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

<a href="/en/project/GA203%2F04%2F0426" target="_blank" >GA203/04/0426: Design and characterization of new photosensitizers and investigation of their interaction with target biological molecules</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2007

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Molecular Liquids

ISSN

0167-7322

e-ISSN

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Volume of the periodical

131

Issue of the periodical within the volume

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Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

6

Pages from-to

200-205

UT code for WoS article

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EID of the result in the Scopus database

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