1:1 and 2:1 Charge-Transfer Complexes between Aromatic Hydrocarbons and Dry Titanium Dioxide

2005 ◽  
Vol 117 (6) ◽  
pp. 932-935 ◽  
Author(s):  
You Seok Seo ◽  
Changhoon Lee ◽  
Kee Hag Lee ◽  
Kyung Byung Yoon
Keyword(s):  
Titanium Dioxide ◽  
Charge Transfer ◽  
Aromatic Hydrocarbons ◽  
Charge Transfer Complexes

1:1 and 2:1 Charge-Transfer Complexes between Aromatic Hydrocarbons and Dry Titanium Dioxide

2005 ◽  
Vol 44 (6) ◽  
pp. 910-913 ◽  
Author(s):  
You Seok Seo ◽  
Changhoon Lee ◽  
Kee Hag Lee ◽  
Kyung Byung Yoon
Keyword(s):  
Titanium Dioxide ◽  
Charge Transfer ◽  
Aromatic Hydrocarbons ◽  
Charge Transfer Complexes

Photooxidation of m-Phenoxytoluene at Colloidal Titanium Dioxide/Non-Aqueous Solution Interfaces

1989 ◽  
Vol 42 (8) ◽  
pp. 1351 ◽  
Author(s):  
E Blatt ◽  
DN Furlong ◽  
AWH Mau ◽  
WHF Sasse ◽  
D Wells
Keyword(s):  
Aqueous Solution ◽  
Titanium Dioxide ◽  
Charge Transfer ◽  
Intermediate Product ◽  
Charge Transfer Complexes ◽  
Analysis Technique ◽  
Aqueous Solvent

The selective photooxidation of m- phenoxytoluene to m-phenoxybenzaldehyde has been investigated in the system m-phenoxytoluene/O2/titanium dioxide/non-aqueous solvent/light. In acetonitrile the conversion was found to be c. 20% with starting concentrations of m-phenoxytoluene in the range 0.05-0.5 mol dm-3. Adsorption of m-phenoxytoluene, m-phenoxybenzaldehyde or the intermediate product m-phenoxybenzyl alcohol from acetonitrile on titanium dioxide was not detectable by an equilibration/centrifugation/supernatant analysis technique. Photoemission and photoexcitation measurements, however, showed that m- phenoxytoluene and m-phenoxybenzyl alcohol, but not m-phenoxybenzaldehyde , formed charge-transfer complexes with titanium dioxide surfaces. The selectivity of the photooxidation is explained in terms of pathways involving these charge-transfer complexes.

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