Getting to the (square) root of the problem
We present experimental data illustrating that photochemical upconversion based on sensitized triplet–triplet annihilation can exhibit anti-Stokes emissions whose intensities with respect to the excitation power can vary between quadratic and linear using a noncoherent polychromatic light source. Th...
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| مؤلفون آخرون: | , , |
| التنسيق: | article |
| منشور في: |
2012
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| الوصول للمادة أونلاين: | http://hdl.handle.net/10725/6487 http://dx.doi.org/10.1021/jz300012u http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://pubs.acs.org/doi/abs/10.1021/jz300012u |
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| _version_ | 1864513479880212480 |
|---|---|
| author | Haefele, Alexandre |
| author2 | Blumhoff, Jorg Khnayzer, Rony S. Castellano, Felix N. |
| author2_role | author author author |
| author_facet | Haefele, Alexandre Blumhoff, Jorg Khnayzer, Rony S. Castellano, Felix N. |
| author_role | author |
| dc.creator.none.fl_str_mv | Haefele, Alexandre Blumhoff, Jorg Khnayzer, Rony S. Castellano, Felix N. |
| dc.date.none.fl_str_mv | 2012 2017-11-03T06:51:47Z 2017-11-03T06:51:47Z 2017-11-03 |
| dc.identifier.none.fl_str_mv | 1948-7185 http://hdl.handle.net/10725/6487 http://dx.doi.org/10.1021/jz300012u Haefele, A., Blumhoff, J., Khnayzer, R. S., & Castellano, F. N. (2012). Getting to the (square) root of the problem: how to make noncoherent pumped upconversion linear. The Journal of Physical Chemistry Letters, 3(3), 299-303. http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://pubs.acs.org/doi/abs/10.1021/jz300012u |
| dc.language.none.fl_str_mv | en |
| dc.relation.none.fl_str_mv | Journal of Physical Chemistry Letters |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | Getting to the (square) root of the problem how to make noncoherent pumped upconversion linear |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | We present experimental data illustrating that photochemical upconversion based on sensitized triplet–triplet annihilation can exhibit anti-Stokes emissions whose intensities with respect to the excitation power can vary between quadratic and linear using a noncoherent polychromatic light source. The benchmark upconverting composition consisting of Pd(II) octaethylporphyrin (PdOEP) sensitizers and 9,10-diphenylanthracene (DPA) acceptors/annihilators in toluene was selected to generate quadratic, intermediate, and linear behavior under both coherent and noncoherent excitation conditions. Each of these power laws was traversed in a single sample in one contiguous experiment through selective pumping of the sensitizer using an Ar+ laser. Wavelength-dependent responses ranging from quadratic to pseudolinear were also recorded from the identical sample composition when excited by Xe lamp/monochromator output in a conventional fluorimeter, where the optical density at λex dictates the observed incident power dependence. Finally, pure linear behavior was derived from noncoherent excitation for the first time at higher sensitizer concentrations. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | LAURepo_b7860f2c5a52ff2f9d6b863dcdc31af3 |
| identifier_str_mv | 1948-7185 Haefele, A., Blumhoff, J., Khnayzer, R. S., & Castellano, F. N. (2012). Getting to the (square) root of the problem: how to make noncoherent pumped upconversion linear. The Journal of Physical Chemistry Letters, 3(3), 299-303. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/6487 |
| publishDate | 2012 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Getting to the (square) root of the problemhow to make noncoherent pumped upconversion linearHaefele, AlexandreBlumhoff, JorgKhnayzer, Rony S.Castellano, Felix N.We present experimental data illustrating that photochemical upconversion based on sensitized triplet–triplet annihilation can exhibit anti-Stokes emissions whose intensities with respect to the excitation power can vary between quadratic and linear using a noncoherent polychromatic light source. The benchmark upconverting composition consisting of Pd(II) octaethylporphyrin (PdOEP) sensitizers and 9,10-diphenylanthracene (DPA) acceptors/annihilators in toluene was selected to generate quadratic, intermediate, and linear behavior under both coherent and noncoherent excitation conditions. Each of these power laws was traversed in a single sample in one contiguous experiment through selective pumping of the sensitizer using an Ar+ laser. Wavelength-dependent responses ranging from quadratic to pseudolinear were also recorded from the identical sample composition when excited by Xe lamp/monochromator output in a conventional fluorimeter, where the optical density at λex dictates the observed incident power dependence. Finally, pure linear behavior was derived from noncoherent excitation for the first time at higher sensitizer concentrations.PublishedN/A2017-11-03T06:51:47Z2017-11-03T06:51:47Z20122017-11-03Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1948-7185http://hdl.handle.net/10725/6487http://dx.doi.org/10.1021/jz300012uHaefele, A., Blumhoff, J., Khnayzer, R. S., & Castellano, F. N. (2012). Getting to the (square) root of the problem: how to make noncoherent pumped upconversion linear. The Journal of Physical Chemistry Letters, 3(3), 299-303.http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.phphttp://pubs.acs.org/doi/abs/10.1021/jz300012uenJournal of Physical Chemistry Lettersinfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/64872021-03-19T10:03:26Z |
| spellingShingle | Getting to the (square) root of the problem Haefele, Alexandre |
| status_str | publishedVersion |
| title | Getting to the (square) root of the problem |
| title_full | Getting to the (square) root of the problem |
| title_fullStr | Getting to the (square) root of the problem |
| title_full_unstemmed | Getting to the (square) root of the problem |
| title_short | Getting to the (square) root of the problem |
| title_sort | Getting to the (square) root of the problem |
| url | http://hdl.handle.net/10725/6487 http://dx.doi.org/10.1021/jz300012u http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://pubs.acs.org/doi/abs/10.1021/jz300012u |