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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ion-Pair Complexes of Pyrylium and Tetraarylborate as New Host-Guest Dyes: Photoinduced Electron Transfer Promoting Radical Polymerization

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Author(s):
Santos, Willy G. [1, 2] ; Budkina, Darya S. [3] ; Santagneli, Silvia H. [1] ; Tarnovsky, Alexander N. [3] ; Zukerman-Schpector, Julio [2] ; Ribeiro, Sidney J. L. [1]
Total Authors: 6
Affiliation:
[1] Sao Paulo State Univ, Inst Chem, UNESP, CP 355, BR-14801970 Araraquara, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Chem, UFSCar, CP 676, BR-13565905 Sao Carlos, SP - Brazil
[3] Bowling Green State Univ, Ctr Photochem Sci, Dept Chem, Bowling Green, OH 43403 - USA
Total Affiliations: 3
Document type: Journal article
Source: Journal of Physical Chemistry A; v. 123, n. 34, p. 7374-7383, AUG 29 2019.
Web of Science Citations: 2
Abstract

Ultrafast transient absorption spectroscopy, NOESY-NMR, and EPR spectroscopy shed light on how pi-pi stacking interactions combined with electrostatic interactions can be used to form stable ion-pair complexes between pyrylium and tetraarylborate ions in which the interaction of the pi-delocalized clouds promotes the observation of new radiative processes and also electron transfer processes excitation using visible light. The results exhibit a striking combination of properties, chemical stability and photophysical and photochemical events, that make these ion-pair complexes as a step toward the realization of chromophore/luminescent materials and also their use as a new monophotoinitiator system in radical polymerization reactions. (AU)

FAPESP's process: 11/51555-7 - Bread and meat for the future
Grantee:Daniel Rodrigues Cardoso
Support type: Regular Research Grants
FAPESP's process: 17/01189-0 - Novel aging: technologies and solutions to manufacture novel dairy products for healthy aging
Grantee:Daniel Rodrigues Cardoso
Support type: Research Projects - Thematic Grants