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Study on Triplet‐Triplet Annihilated Upconversion and the Photodegradation Application
Author(s) -
Liang ZuoQin,
Ding Ping,
Zhang JianFei,
Wang XiaoMei,
Dai GuoLiang,
Ye ChangQing,
Tao XuTang
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600966
Subject(s) - photodegradation , photon upconversion , photochemistry , triplet state , materials science , optoelectronics , chemistry , photocatalysis , doping , organic chemistry , molecule , catalysis
The relationship between structure and upconversion performance of four anthracene‐based acceptors, named as anthracene (An), 9,10‐diphenylanthracene (DPA), 9,10‐di(naphthalen‐1‐yl)anthracene (DNACl) and 9,10‐di(naphthalen‐1‐yl)anthracene‐2‐carbonitrile (DNACN), doped with Pd(II)tetraphenylporphyrin (PdTPP) was studied. Experimental measurements associated with theoretical calculations reveal that the influences of fluorescence quantum yield, Sterm‐Volmer constant and energy level on the upconverted quantum yields. The upconverted fluorescence of PdTPP/DPA and PdTPP/DNACl in oil‐in‐water (o/w) microemulsion was investigated by temperature tuning. The efficiency of upconverted microemulsion increases with the increasing temperature. Furthermore, the upconverted o/w microemulsion has a good shielding ability to oxygen, which is critically important for application. It has been demonstrated to apply the upconverted microemulsion in photodegradation. Under the irradiation of green‐to‐blue upconverted microemulsion in air, the photodegradation efficiency of Rhodamine B (RhB) catalyzed by Zn 0.3 Cd 0.7 S is up to 80 %. The significance in this study suggests that the upconverted microemusion has a good stability against molecular oxygen and can drive the photodegradation for water purification and environmental remediation by sun energy in air.