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	Controlled Assembly of Conjugated Ladder Molecules with Different Bridging Structures toward Optoelectronic Application
	BSRF用户
	2021
Source Publication	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
EISSN	1944-8252
Volume	13Issue:42Pages:50197--50205
Subtype	Article
Abstract	Structural 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.
DOI	10.1021/acsami.1c18673
Indexed By	SCI
Language	英语
WOS Research Area	Science & Technology - Other Topics ; Materials Science
WOS Subject	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS ID	WOS:000713052700057
ItemNo	BSRF00752
beamline	1W1A
Citation statistics
Document Type	期刊论文
Identifier	http://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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