Surface modification of anatase nanoparticles with substituted catecholate type ligands
Конференцијски прилог (Објављена верзија)
,
Society of Physical Chemists of Serbia
Метаподаци
Приказ свих података о документуАпстракт
The surface modification of nanocrystalline TiO2 particles (45 Å) with
catecholate-type ligands having electron donating (4-methylcatechol,
4MetCat) and electron withdrawing (4-nitrocatechol, 4NitCat) substituent
groups, was found to alter the optical properties of nanoparticles in a similar
way to catechol (Cat). The formation of the inner-sphere charge-transfer
(CT) complexes results in a red shift of the semiconductor absorption onset
compared to unmodified nanocrystallites, being slightly less pronounced in
the case of electron withdrawing substituent. The investigated ligands have
the optimal geometry for binding to surface Ti atoms, resulting in ring
coordination complexes of catecholate type (binuclear bidentate binding -
bridging) thus restoring six-coordinated octahedral geometry of surface Ti
atoms. The binding structures were investigated by using FTIR
spectroscopy.
Извор:
Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 2014, H-08-PИздавач:
- Society of Physical Chemists of Serbia
Финансирање / пројекти:
- Утицај величине, облика и структуре наночестица на њихова својства и својства нанокомпозита (RS-MESTD-Basic Research (BR or ON)-172056)
- Материјали редуковане димензионалности за ефикасну апсорпцију светлости и конверзију енергије (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
Колекције
Институција/група
VinčaTY - CONF AU - Savić, Tatjana D. AU - Čomor, Mirjana AU - Tešević, Vele V. AU - Janković, Ivana A. PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/9230 AB - The surface modification of nanocrystalline TiO2 particles (45 Å) with catecholate-type ligands having electron donating (4-methylcatechol, 4MetCat) and electron withdrawing (4-nitrocatechol, 4NitCat) substituent groups, was found to alter the optical properties of nanoparticles in a similar way to catechol (Cat). The formation of the inner-sphere charge-transfer (CT) complexes results in a red shift of the semiconductor absorption onset compared to unmodified nanocrystallites, being slightly less pronounced in the case of electron withdrawing substituent. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of catecholate type (binuclear bidentate binding - bridging) thus restoring six-coordinated octahedral geometry of surface Ti atoms. The binding structures were investigated by using FTIR spectroscopy. PB - Society of Physical Chemists of Serbia C3 - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry T1 - Surface modification of anatase nanoparticles with substituted catecholate type ligands VL - H-08-P UR - https://hdl.handle.net/21.15107/rcub_vinar_9230 ER -
@conference{ author = "Savić, Tatjana D. and Čomor, Mirjana and Tešević, Vele V. and Janković, Ivana A.", year = "2014", abstract = "The surface modification of nanocrystalline TiO2 particles (45 Å) with catecholate-type ligands having electron donating (4-methylcatechol, 4MetCat) and electron withdrawing (4-nitrocatechol, 4NitCat) substituent groups, was found to alter the optical properties of nanoparticles in a similar way to catechol (Cat). The formation of the inner-sphere charge-transfer (CT) complexes results in a red shift of the semiconductor absorption onset compared to unmodified nanocrystallites, being slightly less pronounced in the case of electron withdrawing substituent. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of catecholate type (binuclear bidentate binding - bridging) thus restoring six-coordinated octahedral geometry of surface Ti atoms. The binding structures were investigated by using FTIR spectroscopy.", publisher = "Society of Physical Chemists of Serbia", journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry", title = "Surface modification of anatase nanoparticles with substituted catecholate type ligands", volume = "H-08-P", url = "https://hdl.handle.net/21.15107/rcub_vinar_9230" }
Savić, T. D., Čomor, M., Tešević, V. V.,& Janković, I. A.. (2014). Surface modification of anatase nanoparticles with substituted catecholate type ligands. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry Society of Physical Chemists of Serbia., H-08-P. https://hdl.handle.net/21.15107/rcub_vinar_9230
Savić TD, Čomor M, Tešević VV, Janković IA. Surface modification of anatase nanoparticles with substituted catecholate type ligands. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;H-08-P. https://hdl.handle.net/21.15107/rcub_vinar_9230 .
Savić, Tatjana D., Čomor, Mirjana, Tešević, Vele V., Janković, Ivana A., "Surface modification of anatase nanoparticles with substituted catecholate type ligands" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, H-08-P (2014), https://hdl.handle.net/21.15107/rcub_vinar_9230 .