New Anthracene Derivatives as Triplet Acceptors for Efficient Green-to-Blue Low-Power Upconversion

被引：21

作者：

Liang, Zuo-Qin ^{[1
]}

Sun, Bin ^{[1
]}

Ye, Chang-Qing ^{[1
]}

Wang, Xiao-Mei ^{[1
]}

Tao, Xu-Tang ^{[2
]}

Wang, Qin-Hua ^{[3
,4
]}

Ding, Ping ^{[1
]}

Wang, Bao ^{[1
]}

Wang, Jing-Jing ^{[1
]}

机构：

[1] Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, Jiangsu Key Lab Environm Funct Mat, Suzhou 215009, Peoples R China

[2] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

[3] Soochow Univ, Inst Modern Optic Technol, Key Lab Adv Optic Mfg Technol Jiangsu Prov, Suzhou 215006, Peoples R China

[4] Soochow Univ, Inst Modern Optic Technol, Key Lab Modern Optic Technol Educ, Minist China, Suzhou 215006, Peoples R China

来源：

CHEMPHYSCHEM | 2013年 / 14卷 / 15期

基金：

中国国家自然科学基金;

关键词：

anthracene; fluorescence; Stern-Volmer quenching constants; triplet acceptors; upconversion; EXCITED-STATE; ANNIHILATION; TEMPERATURE; COMPLEXES;

D O I：

10.1002/cphc.201300571

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three new anthracene derivatives [2-chloro-9,10-dip-tolylanthracene (DTACl), 9,10-dip-tolylanthracene-2-carbonitrile (DTACN), and 9,10-di(naphthalen-1-yl) anthracene-2-carbonitrile (DNACN)] were synthesized as triplet acceptors for low-power upconversion. Their linear absorption, single-photon-excited fluorescence, and upconversion fluorescence properties were studied. The acceptors exhibit high fluorescence yields in DMF. Selective excitation of the sensitizer PdIIoctaethylporphyrin (PdOEP) in solution containing DTACl, DTACN, or DNA-CN at 532 nm with an ultralow excitation power density of 0.5 Wcm(-2) results in anti-Stokes blue emission. The maximum upconversion quantum yield (Phi(UC) = 17.4%) was obtained for the couple PdOEP/DTACl. In addition, the efficiency of the triplet-triplet energy transfer process was quantitatively studied by quenching experiments. Experimental results revealed that a highly effective acceptor for upconversion should combine high fluorescence quantum yields with efficient quenching of the sensitizer triplet.

引用

页码：3517 / 3522

页数：6

共 36 条

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