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Narrowband Blue Fluorescent Polymers Employing Boron-, Sulfur-, Nitrogen-doped Polycyclic Aromatic Hydrocarbon Emitters
- Acta Polymerica Sinica Vol. 56, Issue 4, Pages: 564-574(2025)
- 作者机构：
1.中国科学院长春应用化学研究所 高分子物理与化学国家重点实验室 长春 130022
2.中国科学技术大学 应用化学与工程学院 合肥 230026
3.海南大学 材料科学与工程学院 海口 570228
- 作者简介：
Shi-yang Shao, E-mail: ssyang@ciac.ac.cn
Li-xiang Wang, E-mail: lixiang@ciac.ac.cn
- 基金信息：
DOI：10.11777/j.issn1000-3304.2024.24286
CLC：- CSTR：32057.14.GFZXB.2024.7336
Received：20 December 2024，
Accepted：2024-11-20，
Published Online：08 February 2025，
Published：20 April 2025
- 稿件说明：
移动端阅览
常宇飞, 张凯源, 韩博, 邵世洋, 王利祥. 硼/硫/氮杂多环芳烃为发光单元的窄谱带蓝光高分子荧光材料. 高分子学报, 2025, 56(4), 564-574
Chang, Y. F.; Zhang, K. Y.; Han, B.; Shao, S. Y.; Wang, L. X. Narrowband blue fluorescent polymers employing boron-, sulfur-, nitrogen-doped polycyclic aromatic hydrocarbon emitters. Acta Polymerica Sinica, 2025, 56(4), 564-574
常宇飞, 张凯源, 韩博, 邵世洋, 王利祥. 硼/硫/氮杂多环芳烃为发光单元的窄谱带蓝光高分子荧光材料. 高分子学报, 2025, 56(4), 564-574 DOI： 10.11777/j.issn1000-3304.2024.24286. CSTR： 32057.14.GFZXB.2024.7336.
Chang, Y. F.; Zhang, K. Y.; Han, B.; Shao, S. Y.; Wang, L. X. Narrowband blue fluorescent polymers employing boron-, sulfur-, nitrogen-doped polycyclic aromatic hydrocarbon emitters. Acta Polymerica Sinica, 2025, 56(4), 564-574 DOI： 10.11777/j.issn1000-3304.2024.24286. CSTR： 32057.14.GFZXB.2024.7336.
摘要
采用非共轭聚乙烯为高分子骨架，硼/硫/氮杂多环芳烃(5-硫-8
b
-氮-15
b
-硼杂苯并[
a
]
萘并[1
2
3-
hi
]
亚蒽，Ph-BSTBCz)作为发光单元，具有空穴传输能力的咔唑和
N
-苯基-3
6-二叔丁基咔唑作为主体功能单元，设计合成了两类具有窄谱带发射特征的蓝光高分子荧光材料P1-01~P1-05和P2-01~P2-05. 硼/硫/氮杂多环芳烃的多重共振效应使得高分子具有窄的蓝光发射(发光波长473~483 nm，半峰宽31~39 nm)，同时其硫原子的重原子效应能够增强旋轨耦合，提高三线态到单线态的反向系间窜越速率. 相比于含有咔唑主体功能单元的高分子P1-01~P1-05，含有
N
-苯基-3
6-二叔丁基咔唑单元的高分子P2-01~P2-05具有更高的HOMO能级，因而能够降低空穴注入势垒. 采用溶液加工工艺组装的OLED器件评价结果表明，含有
N
-苯基-3
6-二叔丁基咔唑主体单元、硼/硫/氮杂多环芳烃含量为3 mol%的高分子P2-03表现出最佳的电致发光性能，其发光峰位于481 nm，半峰宽为31 nm，外量子效率为8.0%，功率效率为8.1 lm/W.
Abstract
Two kinds of blue narrowband emissive polymers (P1-01-P1-05 and P2-01-P2-05) are designed and synthesized using non-conjugated polyethylene as backbone
boron
sulfur
nitrogen-doped polycyclic aromatic hydrocarbons (5-sulfur-8
b
-borobenzo[
a
]
naphthano[1
2
3-
hi
]
anthracene
Ph-BSCz) as emitter
and carbazole and
N
-phenyl-3
6-di-
t
-butylcarbazole with hole-transporting ability as host units. The multi-resonance effect of boron
sulfur
nitrogen-doped polycyclic aromatic hydrocarbon enables the polymers to exhibit blue narrowband emission (
λ
em
of 473-483 nm and FWHM of 31-39 nm)
and enhances spin-orbit coupling by heave-atom effect of sulfur to improve reverse intersystem crossing rate from triplet to singlet state. On the other hand
compared to polymers (P1-01~P1-05) bearing carbazole units
polymers (P2-01-P2-05) containing
N
-phenyl-3
6-di-
t
-butylcarbazole units have higher HOMO energy levels and lower hole injection barriers. Solution-processed OLEDs based on P2-03 bearing
N
-phenyl-3
6-di-
t
-butylcarbazole units and 3 mol% emitters exhibit the best electroluminescence performance
with emission peak at 481 nm
FWHM of 31 nm
maximum external quantum efficiency of 8.0%
and power efficiency of 8.1 lm/W.
关键词
Keywords
references
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