PMID- 33676716 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20210317 LR - 20210317 IS - 1873-3573 (Electronic) IS - 0039-9140 (Linking) VI - 226 DP - 2021 May 1 TI - A fully automated system with an optical immersion probe (OIP) for high-precision spectrophotometric measurements. PG - 122185 LID - S0039-9140(21)00106-5 [pii] LID - 10.1016/j.talanta.2021.122185 [doi] AB - A new and fully automated system with the interconnection of an Optical Immersion Probe (OIP) - pH meter - peristaltic pump was used to study the spectral and protolytic properties of carbocyanine the dyes 1,1',3,3,3',3'-hexamethylindocarbocyanine chloride (HIC); 1,1',3,3,3',3'-hexamethylindodicarbocyanine iodide (HIDC); and 3,3'-diethyloxadicarbocyanine iodide (DODC). This system can measure a large number of experimental points in a short time period. The effect of 32 various organic solvents on the UV-ViS spectra of the dyes was studied. The solvatochromic behaviour of studied dyes was characterized by positive solvatochromism for HIDC and negative solvatochromism for HIC and DODC. Through the application of a large number of experimental points, the protonation and hydrolysis constants of dyes were determined with high precision, where the confidence interval of the small er, CyrillicK values is +/-(0.001-0.005), compared with a confidence interval of +/-(0.04-0.10) for standard procedures. The fully automated system presented is accurate, fast, environmentally friendly and promising for multiple analytical applications. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Toth, J AU - Toth J AD - Department of Analytical Chemistry, Institute of Chemistry, Faculty of Science, University of Pavol Jozef Safarik in Kosice, Moyzesova 11, 040 01, Kosice, Slovak Republic. Electronic address: jan.toth@student.upjs.sk. FAU - Bazel, Y AU - Bazel Y AD - Department of Analytical Chemistry, Institute of Chemistry, Faculty of Science, University of Pavol Jozef Safarik in Kosice, Moyzesova 11, 040 01, Kosice, Slovak Republic. FAU - Balogh, I AU - Balogh I AD - Department of Chemistry, College of Nyiregyhaza, HU-4400, Nyiregyhaza, Hungary. LA - eng PT - Journal Article DEP - 20210205 PL - Netherlands TA - Talanta JT - Talanta JID - 2984816R SB - IM OTO - NOTNLM OT - Carbocyanine dyes OT - Measurement automation OT - Optical immersion probe OT - Spectral properties EDAT- 2021/03/08 06:00 MHDA- 2021/03/08 06:01 CRDT- 2021/03/07 20:27 PHST- 2020/12/10 00:00 [received] PHST- 2021/01/28 00:00 [revised] PHST- 2021/01/31 00:00 [accepted] PHST- 2021/03/07 20:27 [entrez] PHST- 2021/03/08 06:00 [pubmed] PHST- 2021/03/08 06:01 [medline] AID - S0039-9140(21)00106-5 [pii] AID - 10.1016/j.talanta.2021.122185 [doi] PST - ppublish SO - Talanta. 2021 May 1;226:122185. doi: 10.1016/j.talanta.2021.122185. Epub 2021 Feb 5.