About: Effect of intramolecular charge transfer on fluorescence and singlet oxygen production of phthalocyanine analogues

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About: Effect of intramolecular charge transfer on fluorescence and singlet oxygen production of phthalocyanine analogues Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://pubs.rsc.org/en/content/articlehtml/2012/dt/c2dt31403g
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. (en)
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 (en)
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 (en)
skos:notation	RIV/00216208:11160/12:10124690!RIV13-MSM-11160___
http://linked.open...avai/predkladatel	Farmaceutická fakulta v Hradci Králové
http://linked.open...avai/riv/aktivita	I S
http://linked.open...avai/riv/aktivity	I, S
http://linked.open...iv/cisloPeriodika	38
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Nováková, Veronika Kopecký, Kamil Miletín, Miroslav Zimčík, Petr Váchová, Lenka
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Farmaceutická fakulta v Hradci Králové
http://linked.open...dnocenehoVysledku	133103
http://linked.open...ai/riv/idVysledku	RIV/00216208:11160/12:10124690
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	intramolecular charge transfer; quantum yield; singlet oxygen; fluorescence; azaphthalocyanine (en)
http://linked.open.../riv/klicoveSlovo	singlet oxygen quantum yield fluorescence intramolecular charge transfer azaphthalocyanine
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[B15EE3AA9265]
http://linked.open...i/riv/nazevZdroje	Dalton Transactions
http://linked.open...in/vavai/riv/obor	CC
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	41
http://linked.open...iv/tvurceVysledku	Kopecký, Kamil Miletín, Miroslav Nováková, Veronika Zimčík, Petr Váchová, Lenka
http://linked.open...ain/vavai/riv/wos	000308655800018
issn	1477-9226
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1039/c2dt31403g
http://localhost/t...ganizacniJednotka	11160
is http://linked.open...avai/riv/vysledek of	Effect of intramolecular charge transfer on fluorescence and singlet oxygen production of phthalocyanine analogues

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