Dey, Sunita ; Das, Barun ; Voggu, Rakesh ; Nag, Angshuman ; Sarma, D.D. ; Rao, C.N.R. (2013) Interaction of CdSe and ZnO nanocrystals with electron-donor and -acceptor molecules Chemical Physics Letters, 556 . pp. 200-206. ISSN 0009-2614
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Official URL: https://doi.org/10.1016/j.cplett.2012.11.046
Related URL: http://dx.doi.org/10.1016/j.cplett.2012.11.046
Abstract
Interaction of CdSe and ZnO nanocrystals with electron-donating tetrathiafulvalene (TTF) and electron-withdrawing tetracyanoethylene (TCNE) has been investigated. Isothermal calorimetry shows CdSe nanocrystals interact more strongly with TCNE than TTF. Interaction of larger CdSe nanocrystals with TCNE causes a red-shift in the band-edge emission because of agglomeration, while the smaller CdSe nanocrystals, exhibiting stronger interaction with TCNE modify the optical gap of the nanocrystal. Luminescence of CdSe gets quenched sharply after addition of both TTF and TCNE. ZnO nanocrystals also exhibit luminescence quenching to lesser extent. Defect-emission of ZnO nanocrystals gets red or blue-shifted after interaction with TTF or TCNE respectively.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 142197 |
| Deposited On: | 05 Jan 2026 07:42 |
| Last Modified: | 05 Jan 2026 07:42 |
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