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CAS: Photoinduced Interfacial Charge Transfers with Organic Sensitizers using Low Energy Photons and Fundamental Physical Organic Design Concepts

CAS：使用低能光子和基本物理有机设计概念通过有机敏化剂进行光诱导界面电荷转移

基本信息

批准号：
1954922
负责人：
Jared Delcamp
金额：
$ 55万
依托单位：
University of Mississippi
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-08-15 至 2024-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1954922&HistoricalAwards=false
关键词：
CAS Photoinduced Interfacial Charge Transfers

项目摘要

In this project, funded by the Chemical Structure, Dynamics & Mechanisms B Program of the Chemistry Division, Professors Jared Delcamp and Nathan Hammer of the Department of Chemistry and Biochemistry at the University of Mississippi are developing new classes of organic dye molecules that exhibit interesting light-matter interactions. The goal of this research is to design organic dyes that absorb low-energy light to enable the design of higher-performing electronic devices such as night vision technologies, infrared cameras, secure display technologies, solar cells including transparent ones integrable with buildings, solar batteries, and artificial photosynthetic systems. This project relies on interdisciplinary research utilizing organic, inorganic, materials, and physical chemistry. To encourage STEM involvement, outreach activities to the general public and student groups with large populations of underrepresented minorities are planned. A yearly summer research program brings STEM students onto campus to conduct independent research related to this award. Near-infrared absorbing organic dyes capable of undergoing interfacial charge separation at metal oxide interfaces are needed to advance a number of emerging technologies. Metal oxide bound organic dyes that absorb low energy photons (800 nm) and subsequently undergo charge separation in high quantum yields are rare. Systems in these regions are often limited in utility by excited-state and charge separated state lifetimes. The study of fundamental physical organic chemistry is needed to enable the rational design of systems using low energy photons. In this project, four types of systems are studied at interfaces: (1) dyes with delocalized charge states after electron transfer to metal oxides, (2) dyes with excited-state aromaticity for prolonging excited states to promote higher quantum yields of interfacial photoinduced charge separation, (3) double cross-conjugated dyes for lower energy photon absorptions, and (4) Near-infrared absorbing chromophores incorporating proaromatic functionality.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在这个项目中，由化学部的化学结构，动力学机制B计划资助，密西西比大学化学和生物化学系的Jared Delcamp和Nathan Hammer教授正在开发新的有机染料分子，这些分子表现出有趣的光-物质相互作用。这项研究的目标是设计吸收低能量光的有机染料，以设计更高性能的电子设备，如夜视技术，红外摄像机，安全显示技术，太阳能电池，包括与建筑物集成的透明太阳能电池，太阳能电池和人工光合系统。该项目依赖于利用有机，无机，材料和物理化学的跨学科研究。为了鼓励STEM参与，计划向广大公众和学生团体开展宣传活动，其中有大量代表性不足的少数群体。每年的夏季研究计划将STEM学生带到校园进行与该奖项相关的独立研究。需要能够在金属氧化物界面处经历界面电荷分离的近红外吸收有机染料来推进许多新兴技术。金属氧化物结合的有机染料，吸收低能量的光子（800 nm），并随后经历高量子产率的电荷分离是罕见的。在这些区域中的系统在实用性上常常受到激发态和电荷分离态寿命的限制。基础物理有机化学的研究是必要的，使系统的合理设计使用低能量光子。在本项目中，在接口处研究了四种类型的系统：（1）在电子转移到金属氧化物后具有离域电荷态的染料，（2）具有激发态芳香性的染料，用于延长激发态以促进界面光诱导电荷分离的更高量子产率，（3）用于较低能量光子吸收的双交叉共轭染料，和（4）近红外吸收生色团结合proaromatic功能。这个奖项反映了NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Preferential Direction of Electron Transfers at a Dye–Metal Oxide Interface with an Insulating Fluorinated Self-Assembled Monolayer and MgO

DOI：
10.1021/acs.jpcc.1c07981
发表时间：
2021-11
期刊：
The Journal of Physical Chemistry C
影响因子：
0
作者：
Leigh Anna Hunt;Roberta R. Rodrigues;Kayla Foell;Dinesh Nugegoda;Hammad Cheema;N. Hammer;J. Delcamp
通讯作者：
Leigh Anna Hunt;Roberta R. Rodrigues;Kayla Foell;Dinesh Nugegoda;Hammad Cheema;N. Hammer;J. Delcamp

Integrating GaAs, Si, and Dye-Sensitized Solar Cells in Multijunction Devices and Probing Harsh Condition Behavior

将 GaAs、Si 和染料敏化太阳能电池集成到多结器件中并探索恶劣条件下的行为

DOI：
10.1021/acsaelm.0c00870
发表时间：
2021
期刊：
ACS Applied Electronic Materials
影响因子：
4.7
作者：
Cheema, Hammad;Watson, Jonathon;Delcamp, Jared H.
通讯作者：
Delcamp, Jared H.

Panchromatic NIR-Absorbing Sensitizers with a Thienopyrazine Auxiliary Acceptor for Dye-Sensitized Solar Cells

DOI：
10.1021/acsaem.3c00519
发表时间：
2023-05
期刊：
ACS Applied Energy Materials
影响因子：
6.4
作者：
William E. Meador;Nalaka P. Liyanage;Jonathon Watson;K. Groenhout;J. Delcamp
通讯作者：
William E. Meador;Nalaka P. Liyanage;Jonathon Watson;K. Groenhout;J. Delcamp

Near-infrared unsymmetrical squaraine core-based sensitizers for co-sensitized high-photocurrent dye-sensitized solar cells