{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T20:39:26Z","timestamp":1792701566115,"version":"4.5.0"},"reference-count":36,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T00:00:00Z","timestamp":1792627200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T00:00:00Z","timestamp":1792627200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["RS\u20102024\u201000458249"],"award-info":[{"award-number":["RS\u20102024\u201000458249"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Semiconductor core\/shell nanorods (NRs) exhibit highly diameter\u2010dependent optical properties. However, post\u2010synthetic strategies for broad and controllable diameter modulation remain limited. Here, we present an amine\u2010mediated approach that enables wide\u2010range diameter modulation of CdSe\/CdS NRs through two distinct, temperature\u2010dependent pathways: intraparticle ripening and etching. These opposing processes allow continuous expansion or reduction of NR diameter, leading to systematic red\u2010 and blue\u2010shifts in photoluminescence along with corresponding changes in band alignment and exciton dynamics. Notably, diameter reduction via etching induces a pronounced enhancement of fluorescence anisotropy. Continued etching beyond shell thinning leads to anisotropic reshaping of the CdSe core into a more elongated geometry, which enhances light\u2010hole\u2013heavy\u2010hole subband splitting and results in strongly linearly polarized emission. These results suggest that, although smaller cores are typically associated with reduced fluorescence anisotropy, diameter reduction coupled with anisotropic core reshaping provides a viable strategy to enhance anisotropy. At the ensemble level, this enhancement leads to high polarization contrast after macroscopic alignment. This work establishes amine\u2010mediated diameter engineering as a versatile post\u2010synthetic approach for simultaneously tuning excitonic structure and fluorescence anisotropy of semiconductor NRs, providing a practical design guideline for polarized light\u2010emitting and optoelectronic applications.<\/jats:p>","DOI":"10.1002\/smll.76410","type":"journal-article","created":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T19:49:38Z","timestamp":1792698578000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Amine\u2010Mediated Diameter Control of Core\/Shell Nanorods for Tunable Band Structure and Enhanced Optical Anisotropy"],"prefix":"10.1002","author":[{"given":"Jaeyoon","family":"Moon","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering Center for Innovative Chemical Processes Institute of Engineering University of Seoul  Seoul Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Young Jun","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering Center for Innovative Chemical Processes Institute of Engineering University of Seoul  Seoul Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3552-7438","authenticated-orcid":false,"given":"Dahin","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering Center for Innovative Chemical Processes Institute of Engineering University of Seoul  Seoul Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,22]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"crossref","first-page":"2060","DOI":"10.1126\/science.1060810","article-title":"Linearly Polarized Emission From Colloidal Semiconductor Quantum Rods","volume":"292","author":"Hu J.","year":"2001","journal-title":"Science"},{"key":"e_1_2_9_3_1","doi-asserted-by":"crossref","first-page":"7992","DOI":"10.1021\/acsnano.5b01354","article-title":"Exciton Fine Structure of CdSe\/CdS Nanocrystals Determined by Polarization Microscopy at Room Temperature","volume":"9","author":"Vezzoli S.","year":"2015","journal-title":"ACS Nano"},{"key":"e_1_2_9_4_1","doi-asserted-by":"crossref","first-page":"5769","DOI":"10.1021\/acsnano.5b07949","article-title":"Assessment of Anisotropic Semiconductor Nanorod and Nanoplatelet Heterostructures With Polarized Emission for Liquid Crystal Display Technology","volume":"10","author":"Cunningham P. 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D.","year":"2019","journal-title":"Chemistry of Materials"},{"key":"e_1_2_9_7_1","doi-asserted-by":"crossref","DOI":"10.1002\/adma.202504559","article-title":"Inverted Device Engineering for Efficient and Bright Quantum Rod LEDs","volume":"37","author":"Liao Z.","year":"2025","journal-title":"Advanced Materials"},{"key":"e_1_2_9_8_1","doi-asserted-by":"crossref","first-page":"3761","DOI":"10.1021\/acs.chemrev.2c00410","article-title":"Design Principles of Colloidal Nanorod Heterostructures","volume":"123","author":"Drake G. A.","year":"2023","journal-title":"Chemical Reviews"},{"key":"e_1_2_9_9_1","doi-asserted-by":"crossref","first-page":"1512","DOI":"10.1039\/C0CS00055H","article-title":"Synthesis and Properties of Colloidal Heteronanocrystals","volume":"40","author":"Mello Doneg\u00e1 C.","year":"2011","journal-title":"Chemical Society Reviews"},{"key":"e_1_2_9_10_1","doi-asserted-by":"crossref","first-page":"3413","DOI":"10.1007\/s11814-024-00321-z","article-title":"Colloidal Semiconductor Cadmium Chalcogenide Nanorods and Nanoplatelets: Growth, Optical Anisotropy and Directed Assembly","volume":"41","author":"Moon J.","year":"2024","journal-title":"Korean Journal of Chemical Engineering"},{"key":"e_1_2_9_11_1","doi-asserted-by":"crossref","first-page":"3690","DOI":"10.1021\/acsaenm.5c00702","article-title":"Heterostructured Semiconductor Nanorods for Display Technologies: From Structural Design to Device Integration","volume":"3","author":"Kim Y. J.","year":"2025","journal-title":"ACS Applied Engineering Materials"},{"key":"e_1_2_9_12_1","doi-asserted-by":"crossref","first-page":"5880","DOI":"10.1021\/nl402722n","article-title":"The Electronic Structure of CdSe\/CdS Core\/Shell Seeded Nanorods: Type\u2010I or Quasi\u2010Type\u2010II?","volume":"13","author":"Eshet H.","year":"2013","journal-title":"Nano Letters"},{"key":"e_1_2_9_13_1","doi-asserted-by":"crossref","first-page":"7173","DOI":"10.1021\/nn402597p","article-title":"Beyond Band Alignment: Hole Localization Driven Formation of Three Spatially Separated Long\u2010Lived Exciton States in CdSe\/CdS Nanorods","volume":"7","author":"Wu K.","year":"2013","journal-title":"ACS Nano"},{"key":"e_1_2_9_14_1","doi-asserted-by":"crossref","first-page":"4884","DOI":"10.1021\/nl4027567","article-title":"Reduced Auger Recombination in Single CdSe\/CdS Nanorods by One\u2010Dimensional Electron Delocalization","volume":"13","author":"Rabouw F. T.","year":"2013","journal-title":"Nano Letters"},{"key":"e_1_2_9_15_1","doi-asserted-by":"crossref","DOI":"10.1002\/adma.202513097","article-title":"Giant Shell Nanorods for High\u2010Efficiency and Low\u2010Roll\u2010Off Light\u2010Emitting Diodes","volume":"38","author":"Liu X.","year":"2026","journal-title":"Advanced Materials"},{"key":"e_1_2_9_16_1","doi-asserted-by":"crossref","DOI":"10.1002\/adma.202310705","article-title":"22% Record Efficiency in Nanorod Light\u2010Emitting Diodes Achieved by Gradient Shells","volume":"36","author":"Zeng Y.","year":"2024","journal-title":"Advanced Materials"},{"key":"e_1_2_9_17_1","doi-asserted-by":"crossref","first-page":"5647","DOI":"10.1021\/acs.nanolett.4c01166","article-title":"High\u2010Efficiency and Stable Colloidal One\u2010Dimensional Core\/Shell Nanorod Light\u2010Emitting Diodes","volume":"24","author":"Zeng Y.","year":"2024","journal-title":"Nano Letters"},{"key":"e_1_2_9_18_1","doi-asserted-by":"crossref","first-page":"1469","DOI":"10.1021\/jz200510f","article-title":"Using Shape to Control Photoluminescence From CdSe\/CdS Core\/Shell Nanorods","volume":"2","author":"She C.","year":"2011","journal-title":"The Journal of Physical Chemistry Letters"},{"key":"e_1_2_9_19_1","doi-asserted-by":"crossref","first-page":"2524","DOI":"10.1021\/acs.nanolett.7b00254","article-title":"Semiconductor Seeded Nanorods With Graded Composition Exhibiting High Quantum\u2010Yield, High Polarization, and Minimal Blinking","volume":"17","author":"Hadar I.","year":"2017","journal-title":"Nano Letters"},{"key":"e_1_2_9_20_1","doi-asserted-by":"crossref","first-page":"502","DOI":"10.1021\/jz3021167","article-title":"Polarization Properties of Semiconductor Nanorod Heterostructures: From Single Particles to the Ensemble","volume":"4","author":"Hadar I.","year":"2013","journal-title":"The Journal of Physical Chemistry Letters"},{"key":"e_1_2_9_21_1","doi-asserted-by":"crossref","first-page":"14713","DOI":"10.1021\/acsnano.2c05427","article-title":"Uniaxial Strain Engineering via Core Position Control in CdSe\/CdS Core\/Shell Nanorods and Their Optical Response","volume":"16","author":"Kim D.","year":"2022","journal-title":"ACS Nano"},{"key":"e_1_2_9_22_1","doi-asserted-by":"crossref","first-page":"4591","DOI":"10.1021\/acsnano.5b01245","article-title":"Universal Length Dependence of Rod\u2010to\u2010Seed Exciton Localization Efficiency in Type I and Quasi\u2010Type II CdSe@CdS Nanorods","volume":"9","author":"Wu K.","year":"2015","journal-title":"ACS Nano"},{"key":"e_1_2_9_23_1","doi-asserted-by":"crossref","first-page":"3470","DOI":"10.1021\/nl901679q","article-title":"Multiexciton Engineering in Seeded Core\/Shell Nanorods: Transfer From Type\u2010I to Quasi\u2010Type\u2010II Regimes","volume":"9","author":"Sitt A.","year":"2009","journal-title":"Nano Letters"},{"key":"e_1_2_9_24_1","doi-asserted-by":"crossref","first-page":"1979","DOI":"10.1021\/nn204447e","article-title":"Controlling the Exciton Fine Structure Splitting in CdSe\/CdS Dot\u2010in\u2010Rod Nanojunctions","volume":"6","author":"Rain\u00f2 G.","year":"2012","journal-title":"ACS Nano"},{"key":"e_1_2_9_25_1","doi-asserted-by":"crossref","first-page":"27724","DOI":"10.1021\/acs.jpcc.6b11240","article-title":"Electronic Origin of Linearly Polarized Emission in CdSe\/CdS Dot\u2010in\u2010Rod Heterostructures","volume":"120","author":"Planelles J.","year":"2016","journal-title":"The Journal of Physical Chemistry C"},{"key":"e_1_2_9_26_1","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1021\/jz402426f","article-title":"Tunable Optical Anisotropy of Seeded CdSe\/CdS Nanorods","volume":"5","author":"Diroll B. 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A.","year":"2001","journal-title":"Journal of the American Chemical Society"},{"key":"e_1_2_9_34_1","doi-asserted-by":"crossref","first-page":"2524","DOI":"10.1021\/ja0465404","article-title":"Amine\u2010Assisted Facetted Etching of CdSe Nanocrystals","volume":"127","author":"Li R.","year":"2005","journal-title":"Journal of the American Chemical Society"},{"key":"e_1_2_9_35_1","doi-asserted-by":"crossref","first-page":"6280","DOI":"10.1021\/ja058102i","article-title":"Redox\u2010Assisted Asymmetric Ostwald Ripening of CdSe Dots to Rods","volume":"128","author":"Li R.","year":"2006","journal-title":"Journal of the American Chemical Society"},{"key":"e_1_2_9_36_1","doi-asserted-by":"crossref","DOI":"10.1103\/PhysRevB.87.155427","article-title":"Controlling the Spatial Location of Photoexcited Electrons in Semiconductor CdSe\/CdS Core\/Shell Nanorods","volume":"87","author":"She C.","year":"2013","journal-title":"Physical Review B"},{"key":"e_1_2_9_37_1","doi-asserted-by":"crossref","first-page":"23928","DOI":"10.1021\/jp407151f","article-title":"Interpreting the Energy\u2010Dependent Anisotropy of Colloidal Nanorods Using Ensemble and Single\u2010Particle Spectroscopy","volume":"117","author":"Diroll B. T.","year":"2013","journal-title":"The Journal of Physical Chemistry C"}],"container-title":["Small"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/smll.76410","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/smll.76410","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/smll.76410","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T19:49:43Z","timestamp":1792698583000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/smll.76410"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,10,22]]},"references-count":36,"alternative-id":["10.1002\/smll.76410"],"URL":"https:\/\/doi.org\/10.1002\/smll.76410","archive":["Portico"],"relation":{},"ISSN":["1613-6810","1613-6829"],"issn-type":[{"value":"1613-6810","type":"print"},{"value":"1613-6829","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,10,22]]},"assertion":[{"value":"2026-06-04","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-10-15","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-10-22","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e76410"}}