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Titanium(IV) complexes as direct $TiO_2$ photosensitizers
pl
dc.type
JournalArticle
pl
dc.description.physical
2687-2701
pl
dc.abstract.en
Titanium dioxide photosensitization may be achieved in various ways, involving surface modification with appropriate species. The photosensitization process requires a visible light-induced electron or hole injection into conduction or valence band, respectively. Efficiency of this process depends on electronic interaction between the photosensitizer moiety (surface complex) and $TiO_2$ particle. At least two types of the charge injection mechanisms may be distinguished-in the first, charge is transferred from the excited state of the sensitizer molecule to the conduction or valence band while the second mechanism involves a direct molecule-to-band charge transfer (MBCT). The MBCT process can be realized by surface titanium(IV) complexes with various organic and sometimes inorganic ligands. Catechol, phthalic acid or salicylic acid derivatives, as well as cyanometallate anions, upon chemisorption at $TiO_2$ surface constitute an especially interesting group of ligands to yield various titanium(IV) surface complexes. Geometry of these complexes, electronic structures and possibility of their use as photosensitizers of $TiO_2$ are discussed on the basis of experimental data and quantum-chemical modeling. Also prospective applications of photoinduced electron transfer and photocatalytic activity of such systems are presented.
pl
dc.description.volume
254
pl
dc.description.number
21-22
pl
dc.identifier.doi
10.1016/j.ccr.2009.12.037
pl
dc.identifier.eissn
1873-3840
pl
dc.title.journal
Coordination Chemistry Reviews
pl
dc.language.container
eng
pl
dc.affiliation
Wydział Chemii : Zakład Chemii Nieorganicznej
pl
dc.subtype
ReviewArticle
pl
dc.rights.original
bez licencji
pl
.pointsMNiSW
[2010 A]: 32
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