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Statements

Subject Item
n2:RIV%2F00216208%3A11160%2F12%3A10124690%21RIV13-MSM-11160___
rdf:type
skos:Concept n15:Vysledek
rdfs:seeAlso
http://pubs.rsc.org/en/content/articlehtml/2012/dt/c2dt31403g
dcterms:description
Intramolecular charge transfer (ICT) was studied on a series of magnesium, metal-free and zinc complexes of unsymmetrical tetrapyrazinoporphyrazines and tribenzopyrazinoporphyrazines bearing two dialkylamino substituents (donors) and six alkylsulfanyl or aryloxy substituents (non-donors). The dialkylamino substituents were responsible for ICT that deactivated excited states and led to considerable decrease of fluorescence and singlet oxygen quantum yields. Photophysical and photochemical properties were compared to corresponding macrocycles that do not bear any donor centers. The data showed high feasibility of ICT in the tetrapyrazinoporphyrazine macrocycle and significantly lower efficiency of this deactivation process in the tribenzopyrazinoporphyrazine type molecules. Considerable effect of non-donor peripheral substituents on ICT was also described. The results imply that tetrapyrazinoporphyrazines may be more suitable for development of new molecules investigated in applications based on ICT. Intramolecular charge transfer (ICT) was studied on a series of magnesium, metal-free and zinc complexes of unsymmetrical tetrapyrazinoporphyrazines and tribenzopyrazinoporphyrazines bearing two dialkylamino substituents (donors) and six alkylsulfanyl or aryloxy substituents (non-donors). The dialkylamino substituents were responsible for ICT that deactivated excited states and led to considerable decrease of fluorescence and singlet oxygen quantum yields. Photophysical and photochemical properties were compared to corresponding macrocycles that do not bear any donor centers. The data showed high feasibility of ICT in the tetrapyrazinoporphyrazine macrocycle and significantly lower efficiency of this deactivation process in the tribenzopyrazinoporphyrazine type molecules. Considerable effect of non-donor peripheral substituents on ICT was also described. The results imply that tetrapyrazinoporphyrazines may be more suitable for development of new molecules investigated in applications based on ICT.
dcterms:title
Effect of intramolecular charge transfer on fluorescence and singlet oxygen production of phthalocyanine analogues Effect of intramolecular charge transfer on fluorescence and singlet oxygen production of phthalocyanine analogues
skos:prefLabel
Effect of intramolecular charge transfer on fluorescence and singlet oxygen production of phthalocyanine analogues Effect of intramolecular charge transfer on fluorescence and singlet oxygen production of phthalocyanine analogues
skos:notation
RIV/00216208:11160/12:10124690!RIV13-MSM-11160___
n15:predkladatel
n19:orjk%3A11160
n3:aktivita
n9:S n9:I
n3:aktivity
I, S
n3:cisloPeriodika
38
n3:dodaniDat
n7:2013
n3:domaciTvurceVysledku
n10:8014019 n10:9566236 n10:4085159 n10:2424703 n10:5758068
n3:druhVysledku
n13:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
133103
n3:idVysledku
RIV/00216208:11160/12:10124690
n3:jazykVysledku
n18:eng
n3:klicovaSlova
intramolecular charge transfer; quantum yield; singlet oxygen; fluorescence; azaphthalocyanine
n3:klicoveSlovo
n8:intramolecular%20charge%20transfer n8:azaphthalocyanine n8:singlet%20oxygen n8:fluorescence n8:quantum%20yield
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[B15EE3AA9265]
n3:nazevZdroje
Dalton Transactions
n3:obor
n5:CC
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:rokUplatneniVysledku
n7:2012
n3:svazekPeriodika
41
n3:tvurceVysledku
Nováková, Veronika Kopecký, Kamil Zimčík, Petr Váchová, Lenka Miletín, Miroslav
n3:wos
000308655800018
s:issn
1477-9226
s:numberOfPages
6
n16:doi
10.1039/c2dt31403g
n11:organizacniJednotka
11160