PMID- 37261931 OWN - NLM STAT- MEDLINE DCOM- 20230626 LR - 20231121 IS - 2379-3694 (Electronic) IS - 2379-3694 (Linking) VI - 8 IP - 6 DP - 2023 Jun 23 TI - Molecularly Imprinted Chalcone-Branched Polyimide-Based Chemosensors with Stripe Nanopatterns for the Detection of Melittin. PG - 2298-2308 LID - 10.1021/acssensors.3c00341 [doi] AB - In this study, a chalcone-branched polyimide (CB-PI) was synthesized by the Steglich esterification reaction for selective recognition of the toxic peptide melittin (MEL). MEL was immobilized on a nanopatterned poly(dimethylsiloxane) (PDMS) mold using a conventional surface modification technique to increase binding sites. A stripe-nanopatterned thin CB-PI film was formed on a quartz crystal (QC) substrate by simultaneously performing microcontact printing and ultraviolet (UV) light dimerization using a MEL-immobilized mold. The surface morphology changes and dimensions of the molecularly imprinted polymer (MIP) films with stripe nanopatterns (S-MIP) were analyzed using scanning electron microscopy (SEM) and atomic force microscopy (AFM). The sensing signals (Deltaf and Q(e)) of the S-MIP sensor were investigated upon adsorption in a 100-muL dilute plasma solution containing 30 mug/mL MEL, and its reproducibility, reuse, stability, and durability were investigated. The S-MIP sensor showed high sensitivity (5.49 mL/mg) and coefficient of determination (R(2) = 0.999), and the detection limit (LOD) and the quantification limit (LOQ) were determined as 0.3 and 1.1 mug/mL, respectively. In addition, the selectivity coefficients (k*) calculated from the selectivity tests were 2.7-5.7, 2.1-4.3, and 2.8-4.6 for bovine serum albumin (BSA), immunoglobulin G (IgG), and apamin (APA), respectively. Our results indicate that the nanopatterned MIP sensors based on CB-PI demonstrate great potential as a sensing tool for the quantitative analysis of biomolecules. FAU - Yang, Jin Chul AU - Yang JC AD - Department of Polymer Science & Engineering, Kyungpook National University, 80 Daehak-ro, Daegu 41566, Republic of Korea. FAU - Lee, Jineun AU - Lee J AUID- ORCID: 0000-0003-3216-0861 AD - Department of Polymer Science & Engineering, Kyungpook National University, 80 Daehak-ro, Daegu 41566, Republic of Korea. FAU - Lim, Seok Jin AU - Lim SJ AD - Department of Polymer Science & Engineering, Kyungpook National University, 80 Daehak-ro, Daegu 41566, Republic of Korea. FAU - Kwak, Giseop AU - Kwak G AUID- ORCID: 0000-0003-3111-0918 AD - Department of Polymer Science & Engineering, Kyungpook National University, 80 Daehak-ro, Daegu 41566, Republic of Korea. FAU - Park, Jinyoung AU - Park J AUID- ORCID: 0000-0003-0261-7605 AD - Department of Polymer Science & Engineering, Kyungpook National University, 80 Daehak-ro, Daegu 41566, Republic of Korea. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230601 PL - United States TA - ACS Sens JT - ACS sensors JID - 101669031 RN - 0 (Chalcones) RN - 20449-79-0 (Melitten) RN - 0 (Polymers) SB - IM MH - *Molecular Imprinting/methods MH - *Chalcones MH - Melitten MH - Quartz Crystal Microbalance Techniques/methods MH - Reproducibility of Results MH - Polymers/chemistry OTO - NOTNLM OT - chalcone-branched polyimide OT - imprinting factor OT - melittin OT - molecular imprinting OT - photocrosslinking OT - quartz crystal microbalance EDAT- 2023/06/01 23:42 MHDA- 2023/06/26 06:41 CRDT- 2023/06/01 12:13 PHST- 2023/06/26 06:41 [medline] PHST- 2023/06/01 23:42 [pubmed] PHST- 2023/06/01 12:13 [entrez] AID - 10.1021/acssensors.3c00341 [doi] PST - ppublish SO - ACS Sens. 2023 Jun 23;8(6):2298-2308. doi: 10.1021/acssensors.3c00341. Epub 2023 Jun 1.