pH-Responsive Low-Power Upconversion Based on Sandwichlike Palladiumphthalocyanine and Rhodamine B

被引：5

作者：

Hao, Rongkang ^{[1
]}

Ye, Changqing ^{[1
]}

Wang, Xiaomei ^{[1
,2
]}

Zhu, Lin ^{[1
]}

Chen, Shuoran ^{[1
]}

Yang, Jiawei ^{[1
]}

Tao, Xutang ^{[2
]}

机构：

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

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

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2017年 / 121卷 / 25期

关键词：

TRIPLET-TRIPLET ANNIHILATION; PHASE;

D O I：

10.1021/acs.jpcc.7b02785

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：

Sandwhichlike palladiumphthalocyanine was found to possess highly efficient NIR triplet sensibilization with an increasing of ligand number, due to the triplet energy level (ET) enhancing and the triplet lifetime (320) prolonging and resulting in efficient triplet-triplet energy transfer (TTT). Also, rhodamine B (RhB) was found to act as reactive triplet acceptor that emits red-to-yellow upconversion when doped with sandwhichlike complex. By tuning pH value, the three-layered phthalocyanine/RhB system presents so far the highest red-to-yellow upconversion efficiency (Phi(UC)) as large as 10.5% (lambda(ex) = 655 nm, 1W.cm(-2)), which has provided a simple approach to develop not only the new-type highly efficient NIR sensitizers but also the TTA-UC supported pH response applied in biomedicine.

引用

收藏

页码：13524 / 13531

页数：8

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