title: Synthesis, photophysical studies and ¹O₂ generation of carboxylate-terminated zinc phthalocyanine dendrimers.
abstract: Highly water-soluble dendrimers have been prepared consisting of a central zinc phthalocyanine moiety and dendritic wedges with terminal carboxylate groups. The biggest polyelectrolyte comprises 32 negative charges at the dendrimer surface. The photophysical studies reveal a strong correlation between the degree of dendritic environment, the extent of aggregation, and the ability to generate singlet oxygen in aqueous media. Compared to dendrimers having an axial derivatization the functionalization on the outer rim also significantly improves the phthalocyanine's ability to photosensitize singlet oxygen.
authors.affiliation: Departamento de Química Orgánica (Modulo 01), Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.
authors.forename: Francesca
authors.initials: F
authors.lastname: Setaro
authors.affiliation: Grup d'Enginyeria Molecular, Institut Químic de Sarriá, Universitat Ramon Llull, Barcelona, Spain.
authors.forename: Rubén
authors.initials: R
authors.lastname: Ruiz-González
authors.affiliation: Grup d'Enginyeria Molecular, Institut Químic de Sarriá, Universitat Ramon Llull, Barcelona, Spain.
authors.forename: Santi
authors.initials: S
authors.lastname: Nonell
authors.affiliation: Departamento de Química Orgánica (Modulo 01), Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain; Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 rue Becquerel, 67087 Strasbourg Cedex 2, France.
authors.forename: Uwe
authors.initials: U
authors.lastname: Hahn
authors.affiliation: Departamento de Química Orgánica (Modulo 01), Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain; IMDEA-Nanociencia, c/Faraday, 9, Cantoblanco, 28049 Madrid, Spain. Electronic address: tomas.torres@uam.es.
authors.forename: Tomás
authors.initials: T
authors.lastname: Torres
mesh_terms: D050091:Dendrimers / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry*; D054833:Isoindoles; D009942:Organometallic Compounds / Q000737:chemistry*; D010083:Oxidants, Photochemical / Q000737:chemistry; D010084:Oxidation-Reduction; D017319:Photosensitizing Agents / Q000737:chemistry; D026082:Singlet Oxygen / Q000737:chemistry*; D017967:Zinc Compounds
chemical_list: D050091:Dendrimers; D007211:Indoles; D054833:Isoindoles; D009942:Organometallic Compounds; D010083:Oxidants, Photochemical; D017319:Photosensitizing Agents; D017967:Zinc Compounds; C052159:Zn(II)-phthalocyanine; D026082:Singlet Oxygen
keywords: Dendrimers; Phthalocyanines; Singlet oxygen generation