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Visible‐Light‐Degradable 3D Microstructures in Aqueous Environments

Gernhardt, Marvin; Truong, Vinh X. ; Barner-Kowollik, Christopher 1
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)

Abstract:

The additive manufacturing technique direct laser writing (DLW), also known as two-photon laser lithography, is becoming increasingly established as a technique capable of fabricating functional 3D microstructures. Recently, there has been an increasing effort to impart microstructures fabricated using DLW with advanced functionalities by introducing responsive chemical entities into the underpinning photoresists. Herein, a novel photoresist based on the photochemistry of the bimane group is introduced that can be degraded upon exposure to very mild conditions, requiring only water and visible light (λmax = 415–435 nm) irradiation. The degradation of the microstructures is tracked and quantified using AFM measurements of their height. The influence of the writing parameters as well as the degradation conditions is investigated, unambiguously evidencing effective visible light degradation in aqueous environments. Finally, the utility of the photodegradable resist system is demonstrated by incorporating it into multimaterial 3D microstructures, serving as a model for future applications.


Verlagsausgabe §
DOI: 10.5445/IR/1000155122
Veröffentlicht am 25.01.2023
Originalveröffentlichung
DOI: 10.1002/adma.202203474
Scopus
Zitationen: 10
Web of Science
Zitationen: 8
Dimensions
Zitationen: 10
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 28.09.2022
Sprache Englisch
Identifikator ISSN: 0935-9648, 1521-4095
KITopen-ID: 1000155122
HGF-Programm 43.32.01 (POF IV, LK 01) Molecular Materials Basis for Optics & Photonics
Erschienen in Advanced Materials
Verlag John Wiley and Sons
Band 34
Heft 39
Seiten Art.-Nr. 2203474
Vorab online veröffentlicht am 02.08.2022
Nachgewiesen in Web of Science
Scopus
Dimensions
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