Light Modulation of Charge Transfer Processes in Inorganic-Organic Materials
无机-有机材料中电荷转移过程的光调制
基本信息
- 批准号:RGPIN-2017-06587
- 负责人:
- 金额:$ 1.6万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2017
- 资助国家:加拿大
- 起止时间:2017-01-01 至 2018-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Functional materials that undergo changes in magnetic, optical, and conducting properties upon application of external stimuli (light, electric field, or magnetic field) are central to the development of non-volatile memory technologies, spintronics devices, and sensors. Current challenges involve developing materials that switch between two functional states with light for scalable memory and sensor development. We have developed a novel strategy for light-driven functional materials through functionalization with optically bistable photochromes. Photochromes undergo light-induced isomerization between two states that differ in the electronic structures of their ground and metastable states. We have developed photochromic spirooxazine ligands that can be bound to metal centers or incorporated into organic multichromophoric arrays. Once bound, light-induced changes in spirooxazine structure lead to changes in the redox potential, ground state energies, and excited state energies at the functional target component (metal center or chromophore). Such structural changes can then trigger energy-transfer, and charge-transfer processes between two organic chromophores, organic ligands, and metal centers, or between two metal centers in a mixed valence state. Previous work in our lab has demonstrated proof-of-principle for photochrome-induced charge transfer or energy transfer processes in an electronically bistable cobalt complex, fluorescent conjugated polymer nanoparticles, and fluorescent organic dyads. In this proposal, we describe experiments designed to understand the fundamental structural and electronic factors that govern these phenomena, the limits of photochrome-gated processes, and the kinetic and thermodynamic factors that regulate signal-to-noise ratios for optimizing light-induced gating for sensors and memory applications.
在施加外部刺激(光、电场或磁场)时经历磁性、光学和导电性质变化的功能材料是非易失性存储器技术、自旋电子器件和传感器的发展的核心。目前的挑战涉及开发在两种功能状态之间切换的材料,用于可扩展的存储器和传感器开发。我们已经开发了一种新的策略,光驱动功能材料,通过功能化与光学双折射光致变色。光致变色剂在基态和亚稳态的电子结构不同的两种状态之间进行光诱导异构化。我们已经开发了光致变色螺恶嗪配体,可以绑定到金属中心或纳入有机多发色团阵列。一旦结合,光诱导的螺恶嗪结构的变化导致功能性目标组分(金属中心或发色团)的氧化还原电位、基态能量和激发态能量的变化。然后,这种结构变化可以触发两个有机发色团、有机配体和金属中心之间或混合价态的两个金属中心之间的能量转移和电荷转移过程。我们实验室以前的工作已经证明了光致变色诱导的电荷转移或能量转移过程的原理证明,在电子可吸收的钴络合物,荧光共轭聚合物纳米粒子和荧光有机二联体。在本提案中,我们描述了旨在了解控制这些现象的基本结构和电子因素、光致变色门控过程的限制以及调节信噪比以优化光致门控的动力学和热力学因素的实验传感器和存储器应用。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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{{ truncateString('Frank, Natia', 18)}}的其他基金
Light Modulation of Charge Transfer Processes in Inorganic-Organic Materials
无机-有机材料中电荷转移过程的光调制
- 批准号:
RGPIN-2017-06587 - 财政年份:2019
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Light Modulation of Charge Transfer Processes in Inorganic-Organic Materials
无机-有机材料中电荷转移过程的光调制
- 批准号:
RGPIN-2017-06587 - 财政年份:2018
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Photochromic and Spin-Active pi-Functional Materials
光致变色和自旋活性 pi 功能材料
- 批准号:
311740-2012 - 财政年份:2016
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Light switchable magnetic materials for nonvolatile memory applications: LI-RAM
用于非易失性存储器应用的光可切换磁性材料:LI-RAM
- 批准号:
500189-2016 - 财政年份:2016
- 资助金额:
$ 1.6万 - 项目类别:
Idea to Innovation
Photochromic and Spin-Active pi-Functional Materials
光致变色和自旋活性 pi 功能材料
- 批准号:
311740-2012 - 财政年份:2015
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Photochromic and Spin-Active pi-Functional Materials
光致变色和自旋活性 pi 功能材料
- 批准号:
311740-2012 - 财政年份:2014
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Photochromic and Spin-Active pi-Functional Materials
光致变色和自旋活性 pi 功能材料
- 批准号:
311740-2012 - 财政年份:2013
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Photochromic and Spin-Active pi-Functional Materials
光致变色和自旋活性 pi 功能材料
- 批准号:
311740-2012 - 财政年份:2012
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Design of molecular magnetoelectronic materials
分子磁电材料设计
- 批准号:
311740-2008 - 财政年份:2010
- 资助金额:
$ 1.6万 - 项目类别:
Discovery Grants Program - Individual
Multifunctional Materials Design
多功能材料设计
- 批准号:
1000202373-2004 - 财政年份:2009
- 资助金额:
$ 1.6万 - 项目类别:
Canada Research Chairs
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Discovery Grants Program - Individual
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