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兰州大学机构库  > 化学化工学院  > 期刊论文
题名: Benzoindolic squaraine dyes with a large two-photon absorption cross-section
作者: Sun, CL; Lv, SK; Liu, YP; Liao, Q; Zhang, HL(张浩力); Fu, HB; Yao, JN
收录类别: SCIE
出版日期: 2017
刊名: JOURNAL OF MATERIALS CHEMISTRY C
卷号: 5, 期号:1-5, 页码:1224-1230
出版者: ROYAL SOC CHEMISTRY
出版地: CAMBRIDGE
英文摘要: Near-infrared (NIR) emission and two-photon excited fluorescence (TPEF) are both desirable features for bioimaging because they offer several advantages, such as deep tissue penetration, high spatial resolution and low background noise. However, incorporation of NIR emission and TPEF into the same labeling dye molecule remains a formidable challenge as it requires three features simultaneously: large two-photon absorption cross-section (delta), high fluorescence quantum yield (Phi) and an appropriate NIR absorption/emission wavelength. Herein, we report a theory-assisted design of novel benzoindolic squaraine (BIS) dye molecules that exhibit a high-performance NIR emission and TPEF properties simultaneously. First, the planarity of the BIS core extended the p-framework, which leads to NIR emission at 682 nm with a quantum yield greater than 40%. Second, we utilized the local electric field effect by the addition of non-conjugated D/A moieties to the BIS core to modulate the two-photon absorption (TPA) cross-section (delta) values. Natural transition orbital calculations suggest that non-conjugated D or A groups do not affect the one-photon photophysical properties of BIS dyes, but can alter the molecular orbitals involved in the S-n <- S-0 (n >= 2) TPA process. With this new strategy, we successfully obtained a methoxyl-modified molecule (BIS-1), which presents a TPA window between 780 and 950 nm, with the largest d value above 12 000 GM.
作者部门: [Sun, Chun-Lin ; Liu, Yan-Ping ; Fu, Hongbing ; Yao, Jiannian] Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China ; [Sun, Chun-Lin ; Zhang, Hao-Li] Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Special Funct Mat & Struct Design MOE, State Key Lab Appl Organ Chem, Lanzhou 73000, Peoples R China ; [Lv, Shao-Kai ; Liao, Qing ; Fu, Hongbing ; Yao, Jiannian] Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
通讯作者: Fu, HB ; Yao, JN (reprint author), Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China. ; Zhang, HL (reprint author), Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Special Funct Mat & Struct Design MOE, State Key Lab Appl Organ Chem, Lanzhou 73000, Peoples R China. ; Fu, HB ; Yao, JN (reprint author), Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China.
学科分类: Materials Science; Physics
文章类型: Article
所属项目编号: National Natural Science Foundation of China [21573251, 21521062, 21190034, 21221002] ; project of the State Key Laboratory on Integrated Optoelectronics of the Jilin University [IOSKL2014KF16] ; project of Construction of Innovative Teams and the Teacher Career Development for Universities and Colleges Under Beijing Municipality [IDHT20140512] ; National Basic Research Program of China (973) [2011CB808402, 2013CB933500] ; Chinese Academy of Science ; National Basic Research Program of China (973 Program) [2012CB933102] ; 111 Project and the National Basic Research Program of Beijing [2162011]
所属项目名称: 国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划(973计划) ; 高等学校学科创新引智计划(111计划)
项目资助者: NSFC ; MOST ; MOE ; SAFEA
语种: 英语
DOI: 10.1039/c6tc04129a
ISSN号: 2050-7526
WOS记录号: WOS:000395887300026
IR记录号: WOS:000395887300026
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/188937
Appears in Collections:化学化工学院_期刊论文

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Recommended Citation:
Sun, CL,Lv, SK,Liu, YP,et al. Benzoindolic squaraine dyes with a large two-photon absorption cross-section[J]. JOURNAL OF MATERIALS CHEMISTRY C,2017,5(1-5):1224-1230.
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