{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T13:35:44Z","timestamp":1792071344968,"version":"4.4.0"},"reference-count":35,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2020,12,22]],"date-time":"2020-12-22T00:00:00Z","timestamp":1608595200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["SA1657\/8-2"],"award-info":[{"award-number":["SA1657\/8-2"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Ionic complexation of azobenzene-containing surfactants with any type of oppositely charged soft objects allows for making them photo-responsive in terms of their size, shape and surface energy. Investigation of the photo-isomerization kinetic and isomer composition at a photo-stationary state of the photo-sensitive surfactant conjugated with charged objects is a necessary prerequisite for understanding the structural response of photo-sensitive complexes. Here, we report on photo-isomerization kinetics of a photo-sensitive surfactant in the presence of poly(acrylic acid, sodium salt). We show that the photo-isomerization of the azobenzene-containing cationic surfactant is slower in a polymer complex compared to being purely dissolved in aqueous solution. In a photo-stationary state, the ratio between the trans and cis isomers is shifted to a higher trans-isomer concentration for all irradiation wavelengths. This is explained by the formation of surfactant aggregates near the polyelectrolyte chains at concentrations much lower than the bulk critical micelle concentration and inhibition of the photo-isomerization kinetics due to steric hindrance within the densely packed aggregates.<\/jats:p>","DOI":"10.3390\/molecules26010019","type":"journal-article","created":{"date-parts":[[2020,12,22]],"date-time":"2020-12-22T20:39:29Z","timestamp":1608669569000},"page":"19","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":32,"title":["Photo-Isomerization Kinetics of Azobenzene Containing Surfactant Conjugated with Polyelectrolyte"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9916-7289","authenticated-orcid":false,"given":"Anjali","family":"Sharma","sequence":"first","affiliation":[{"name":"Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6989-9996","authenticated-orcid":false,"given":"Marek","family":"Bekir","sequence":"additional","affiliation":[{"name":"Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nino","family":"Lomadze","sequence":"additional","affiliation":[{"name":"Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5041-3650","authenticated-orcid":false,"given":"Svetlana","family":"Santer","sequence":"additional","affiliation":[{"name":"Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,12,22]]},"reference":[{"key":"ref_1","first-page":"1361","article-title":"Remote control of soft nano-objects by light using azobenzene containing surfactants","volume":"51","author":"Santer","year":"2017","journal-title":"J. Phys. D Appl. Phys."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2365","DOI":"10.1039\/c3sm27716j","article-title":"Stimuli-responsive surfactants","volume":"9","author":"Brown","year":"2013","journal-title":"Soft Matter"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"105","DOI":"10.1002\/cbic.201100492","article-title":"Photochemical Modulation of DNA Conformation by Organic Dications","volume":"13","author":"Zinchenko","year":"2012","journal-title":"ChemBioChem"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"5854","DOI":"10.1039\/c1sm05314k","article-title":"Enhancement of DNA compaction by negatively charged nanoparticles. Application to reversible photocontrol of DNA higher-order structure","volume":"7","author":"Rudiuk","year":"2011","journal-title":"Soft Matter"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"311","DOI":"10.1021\/acs.langmuir.7b03638","article-title":"Photosensitive Cationic Azobenzene Surfactants: Thermodynamics of Hydration and the Complex Formation with Poly(methacrylic acid)","volume":"34","author":"Montagna","year":"2018","journal-title":"Langmuir"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"6913","DOI":"10.1021\/acs.jpcb.0c02848","article-title":"Photo-Switchable Surfactants for Responsive Air-Water Interfaces: Azo versus Arylazopyrazole Amphiphiles","volume":"124","author":"Schnurbus","year":"2020","journal-title":"J. Phys. Chem."},{"key":"ref_7","unstructured":"Rebek, J. (1989). Photoisomerization of Azobenzenes. Photochemistry and Photophysics, CRC Press."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"60138","DOI":"10.1039\/C6RA06459K","article-title":"Synthesis of photo-responsive azobenzene molecules with different hydrophobic chain length for controlling foam stability","volume":"6","author":"Chen","year":"2016","journal-title":"RSC Adv."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1299","DOI":"10.1039\/C6SM01846G","article-title":"Optical control of surface forces and instabilities in foam films using photosurfactants","volume":"13","author":"Mamane","year":"2017","journal-title":"Soft Matter"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1611","DOI":"10.1007\/BF00664729","article-title":"Effect of structural variation within cationic azo-surfactant upon photoresponsive function in aqueous solution","volume":"272","author":"Hayashita","year":"1994","journal-title":"Colloid Polym. Sci."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"6400","DOI":"10.1021\/ja0576738","article-title":"Photoreversible DNA Condensation Using Light-Responsive Surfactants","volume":"128","author":"Ny","year":"2006","journal-title":"J. Am. Chem. Soc."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1201","DOI":"10.1002\/cbic.200800072","article-title":"Photocontrol of Single-Chain DNA Conformation in Cell-Mimicking Microcompartments","volume":"9","author":"Sollogoub","year":"2008","journal-title":"ChemBioChem"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"84263","DOI":"10.1039\/C5RA15256A","article-title":"Photocontrollable volume phase transition of an azobenzene functionalized microgel and its supramolecular complex","volume":"5","author":"Zhu","year":"2015","journal-title":"RSC Adv."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"11890","DOI":"10.1002\/chem.201001579","article-title":"Photosensitive surfactants with various hydrophobic tail lengths for the photocontrol of genomic DNA conformation with improved efficiency","volume":"16","author":"Diguet","year":"2010","journal-title":"Chem. A Eur. J."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"19175","DOI":"10.1021\/acsami.6b06881","article-title":"Light-Induced Reversible Change of Roughness and Thickness of Photosensitive Polymer Brushes","volume":"8","author":"Kopyshev","year":"2016","journal-title":"ACS Appl. Mater. Interf."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"421","DOI":"10.1016\/j.polymer.2016.03.050","article-title":"Polymer brushes modified by photosensitive azobenzene containing polyamines","volume":"98","author":"Kopyshev","year":"2016","journal-title":"Polymer"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"8506","DOI":"10.1038\/s41598-017-08153-0","article-title":"Mass production of polymer nano-wires filled with metal nano-particles","volume":"7","author":"Lomadze","year":"2017","journal-title":"Sci. Rep."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"10764","DOI":"10.1021\/la0350958","article-title":"Photoresponsive Surfactants Exhibiting Unusually Large, Reversible Surface Tension Changes under Varying Illumination Conditions","volume":"19","author":"Shang","year":"2003","journal-title":"Langmuir"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"7866","DOI":"10.1039\/c1sm05378g","article-title":"Pumping-out photo-surfactants from an air-water interface using light","volume":"7","author":"Chevallier","year":"2011","journal-title":"Soft Matter"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"3218","DOI":"10.1021\/ja311837r","article-title":"Microfluidic Mixing Triggered by an External LED Illumination","volume":"135","author":"Barbaud","year":"2013","journal-title":"J. Am. Chem. Soc."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"2308","DOI":"10.1021\/la204200z","article-title":"Photofoams: Remote Control of Foam Destabilization by Exposure to Light Using an Azobenzene Surfactant","volume":"28","author":"Chevallier","year":"2012","journal-title":"Langmuir"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"7908","DOI":"10.1021\/acs.langmuir.7b00934","article-title":"Photoresponsive Foams Generated by a Rigid Surfactant Derived from Dehydroabietic Acid","volume":"33","author":"Lei","year":"2017","journal-title":"Langmuir"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"14944","DOI":"10.1021\/la302998k","article-title":"Lateral Dynamics of Surfactants at the Free Water Surface: A Computer Simulation Study","volume":"28","author":"Rideg","year":"2012","journal-title":"Langmuir"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"5000","DOI":"10.1002\/adfm.201200617","article-title":"Light Controlled Reversible Manipulation of Microgel Particle Size Using Azobenzene Containing Surfactant","volume":"22","author":"Zakrevskyy","year":"2012","journal-title":"Adv. Funct. Mater."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"108","DOI":"10.1039\/C6CP04555C","article-title":"Photosensitive microgels containing azobenzene surfactants of different charge","volume":"19","author":"Schimka","year":"2017","journal-title":"Phys. Chem. Chem. Phys."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Arya, P., Jelken, J., Lomadze, N., Santer, S., and Bekir, M. (2020). Kinetics of photo-isomerization of azobenzene containing surfactants. J. Chem. Phys., 152.","DOI":"10.1063\/1.5135913"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"044906","DOI":"10.1063\/1.4862678","article-title":"Photosensitive surfactants: Micellization and interaction with DNA","volume":"140","author":"Zakrevskyy","year":"2014","journal-title":"J. Chem. Phys."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Arya, P., Jelken, J., Feldmann, D., Lomadze, N., and Santer, S. (2020). Light driven diffusioosmotic repulsion and attraction of colloidal particles. J. Chem. Phys., 152.","DOI":"10.1063\/5.0007556"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"6994","DOI":"10.1021\/acs.langmuir.9b03270","article-title":"Extremely Long-Range Light-Driven Repulsion of Porous Microparticles","volume":"36","author":"Feldmann","year":"2020","journal-title":"Langmuir"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1148","DOI":"10.1039\/C9SM02068C","article-title":"Light driven guided and self-organized motion of mesoporous colloidal particles","volume":"16","author":"Arya","year":"2020","journal-title":"Soft Matter"},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Feldmann, D., Arya, P., Lomadze, N., Kopyshev, A., and Santer, S. (2019). Light-driven motion of self-propelled porous Janus particles. Appl. Phys. Lett., 115.","DOI":"10.1063\/1.5129238"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"044907","DOI":"10.1063\/1.4862679","article-title":"Interaction of photosensitive surfactant with DNA and poly acrylic acid","volume":"140","author":"Zakrevskyy","year":"2014","journal-title":"J. Chem. Phys."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"341","DOI":"10.1080\/10587250210555","article-title":"Liquid Crystal Photoalignment using New Photoisomerisable Langmuir-Blodgett Films","volume":"375","author":"Dumont","year":"2002","journal-title":"Mol. Cryst. Liq. Cryst."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"14065","DOI":"10.1021\/la202897q","article-title":"Ionic Strength Effects on the Critical Micellar Concentration of Ionic and Nonionic Surfactants: The Binding Model","volume":"27","author":"Palladino","year":"2011","journal-title":"Langmuir"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"105","DOI":"10.1002\/mats.1992.040010301","article-title":"Collapse of polyelectrolyte networks induced by their interaction with an oppositely charged surfactant","volume":"1","author":"Khokhlov","year":"1992","journal-title":"Makromol. Chem. Theory Simul."}],"container-title":["Molecules"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1420-3049\/26\/1\/19\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T10:48:33Z","timestamp":1760179713000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1420-3049\/26\/1\/19"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,12,22]]},"references-count":35,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2021,1]]}},"alternative-id":["molecules26010019"],"URL":"https:\/\/doi.org\/10.3390\/molecules26010019","relation":{},"ISSN":["1420-3049"],"issn-type":[{"value":"1420-3049","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,12,22]]}}}