IHEP OpenIR  > 北京同步辐射装置
Controlled Assembly of Conjugated Ladder Molecules with Different Bridging Structures toward Optoelectronic Application
BSRF用户
2021
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
EISSN1944-8252
Volume13Issue:42Pages:50197--50205
SubtypeArticle
AbstractStructural design of organic it-conjugated small molecules allows the energy band structure and electronic properties of the molecules to be tuned as needed, which provides a feasible strategy for enhancing the performance of optoelectronic devices. The introduction of bridging structures is a common structural modification method to adjust the rigidity and coplanarity of the molecular backbone, thus affecting the molecular packing. However, patterning of organic single-crystalline microstructures based on conjugated ladder molecules with different bridging structures still remains challenging for large-area integration of optoelectronic devices. In this paper, a controlled dewetting process is applied to obtain organic single-crystalline arrays with precise positioning and a regular morphology based on two isomers with silicon-oxygen bridging and their two carbon-oxygen-bridged analogues. Molecules with different bridging structures show disparate packing models due to the difference of dihedral angles and ring tensions. A microwire-array ultraviolet photodetector based on the oxygen-silicon-bridging ladder molecule exhibits a high light on/off ratio of 24 and a responsivity of 0.63 mA W-1 owing to the effective pi-pi stacking governed by the molecular planarity. This work not only provides a universal method for the integration of organic optoelectronic devices but also explains the effect of bridging structure engineering on molecular assembly and optoelectronic performance.
DOI10.1021/acsami.1c18673
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000713052700057
ItemNoBSRF00752
beamline1W1A
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/293520
Collection北京同步辐射装置
Recommended Citation
GB/T 7714
BSRF用户. Controlled Assembly of Conjugated Ladder Molecules with Different Bridging Structures toward Optoelectronic Application[J]. ACS APPLIED MATERIALS & INTERFACES,2021,13(42):50197--50205.
APA BSRF用户.(2021).Controlled Assembly of Conjugated Ladder Molecules with Different Bridging Structures toward Optoelectronic Application.ACS APPLIED MATERIALS & INTERFACES,13(42),50197--50205.
MLA BSRF用户."Controlled Assembly of Conjugated Ladder Molecules with Different Bridging Structures toward Optoelectronic Application".ACS APPLIED MATERIALS & INTERFACES 13.42(2021):50197--50205.
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