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Precise patterning of small-molecule semiconductive crystals without external chemical additives remains a significant challenge. Herein, we design and synthesize intrinsic photo-crosslinkable semiconductive small-molecule crystals (i-PSSCs) by associating [1]benzothieno[3,2-b]benzothiophene core with diacetylene-ended groups. The i-PSSCs undergo self-crosslinking directly upon ultraviolet light irradiation to yield micron-scale patterned crystalline films through a combination of photo-crosslinking and solvent rinsing. The molecular packing remains intact before and after patterning. Therefore, the electrical performance of the organic thin-film transistors fabricated from both pristine and patterned i-PSSCs films show minimal difference, with maximum field-effect mobilities of 0.46 and 0.25 cm² V-¹ s-¹, respectively. Moreover, the i-PSSCs in a transistor array exhibit high sensitivity and selective response to ultraviolet patterns, enabling bio-inspired vision systems that mimic human retinal extraction of image descriptors. This work offers a valuable strategy for developing i-PSSCs for UV-selective artificial vision applications.

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• Creative Commons BY Attribution 4.0 International
  

Keyword: printed electronics, organic electronics, organic thin-film transistors

Date published: 2025-08-30

Publisher: Wiley

Journal:

• Advanced Science (ISSN: 21983844) vol. 12 issue. 44 e04711

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Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1002/advs.202504711

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Updated at: 2026-06-30 16:01:06 +0900

Published on MDR: 2026-06-30 18:29:07 +0900