2026-10-12T06:34:26Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34018633 2026-09-28T23:03:21Z category_4 category_146 category_915 category_21 category_272 category_873 category_46 category_734 category_132 portal_63 item_type_6 month_year_09_2026

Supramolecularly Directed Area-Selective Photo-Cross-Linking of Block Copolymers for Robust Nanostructures Shabari Dutta (23796712) Shaghayegh Abtahi (18257462) Chizoba Livina Iheme (25133470) Nayanathara Hendeniya (18257453) Sharif Tasnim Mahmud (22215152) Colin R Porter (25133473) Alexandra Kuhlman Schneider (23796718) Boyce Chang (4025012) Biochemistry Space Science Physical Sciences not elsewhere classified Biotechnology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Immunology Biological Sciences not elsewhere classified Infectious Diseases swelling studies showed combined findings establish supramolecularly directed area cinnamic acid selective layer multilayer architectures bcp microphase separation directed self selective photo versatile platform versatile method study introduces robust nanostructures ps -< p4vp block multifunctional coatings morphological reconstruction layer nanofabrication induced photocycloaddition grayscale lithography fabricate layer block copolymers bcp film b </ This study introduces a versatile method for fabricating cross-linked, hierarchically ordered multilayer nanostructures from PS-<i>b</i>-P4VP block copolymer (BCP) films. The approach combines supramolecular hydrogen bonding of cinnamic acid selective to the P4VP block, followed by UV-induced photocycloaddition to form truxillic acid cross-links. Efficient cross-linking was achieved under low UV-irradiance that resulted in densified films with excellent film retention (∼99%). Swelling studies showed that the BCP film is solvent-stable and exhibits limited swelling despite domain-selective cross-linking. Interestingly, the non-cross-linked domains remain available for solvent uptake, leading to morphological reconstruction. These solvent-stable films were further used to fabricate layer-by-layer multilayer architectures while preserving the laterally ordered nanoscale morphologies generated by BCP microphase separation. The combined findings establish a versatile platform that integrates block copolymer self-assembly with layer-by-layer nanofabrication, providing tunable multilayer nanostructures for applications in grayscale lithography, membranes, directed self-assembly, and multifunctional coatings. 2026-09-28T00:00:00Z Text Journal contribution 10.1021/acsapm.6c03397.s001 https://figshare.com/articles/journal_contribution/Supramolecularly_Directed_Area-Selective_Photo-Cross-Linking_of_Block_Copolymers_for_Robust_Nanostructures/34018633 CC BY-NC 4.0