Enhancement of fluorescence from one- and two-photon absorption of hemicyanine dyes by confinement in silicalite-1 nanochannels

被引：6
作者：
Kim, Dain [1 ]
Kim, Hyun Sung [1 ]
机构：
[1] Pukyong Natl Univ, Dept Chem, Busan 48513, South Korea
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2017年 / 243卷
基金：
新加坡国家研究基金会;
关键词：
Silicalite-1; Fluorescence; Two photon absorption; Two photon fluorescence; Hemicyanine; ASSISTED CRYSTALLIZATION INCLUSION; NONLINEAR-OPTICAL-MATERIALS; ENERGY-TRANSFER; GENERATION; NANOPARTICLES; DERIVATIVES;
D O I：
10.1016/j.micromeso.2017.02.005
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
We prepared unique organic inorganic composite possessing strong one- and two-photon florescence properties by encapsulating hemicyanine molecules in nanosized silicalite-1 zeolite. The free hemicyanine dye in solvent and confined hemicyanine dye in nanochannels of silicalite-1 showed identical optical one- and two-photon absorption coefficients. By contrast, the fluorescence quantum yields of confined hemicyanine molecules in silicalite-1 channels from one and two-photon absorption were 5 and 3.3-fold, respectively, higher than those of free hemicyanine solution. Such contrasting behaviors in fluorescence were attributed to the isolation and confinement of hemicyanine in nanochannels of silicalite-1. This study represents a promising new strategy in the development of one- and two-photon fluorescence materials and a novel direction for zeolite research and its application in the development of optical materials. (C) 2017 Elsevier Inc. All rights reserved.
引用
收藏
页码：69 / 75
页数：7
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