{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T03:44:11Z","timestamp":1790480651678,"version":"4.1.0"},"reference-count":33,"publisher":"AIP Publishing","issue":"2","funder":[{"name":"National Natural Science Foundation of China Youth Foundation","award":["22208236"],"award-info":[{"award-number":["22208236"]}]},{"name":"National Science Foundation of Tianjin Youth Foundation","award":["23JCQNJC01880"],"award-info":[{"award-number":["23JCQNJC01880"]}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2025,7,14]]},"abstract":"<jats:p>The riddle of \u03b1-resorcinol was initially studied extensively as an abnormal growth phenomenon, which significantly contributed to our understanding of asymmetric growth mechanisms in organic polar crystals, yet the crystalline surface structure and solvent behavior have not received adequate attention. To address this and meet the demand for advanced organic nonlinear optical (NLO) materials, 2,7-dihydroxynaphthalene (2,7-DHN) was studied as a model substance to revisit the riddle of \u03b1-resorcinol. Surprisingly, 2,7-DHN crystals expose naphthalene-rich and hydroxyl-rich surfaces along polar c-axis, similar to the packing of \u03b1-resorcinol. Single-crystal growth experiments and simulations show that solvent type significantly influences the asymmetric growth and morphology of 2,7-DHN. Compared to \u03b1-resorcinol, the \u201cpocket-like\u201d structure of 2,7-DHN plays a more decisive role, thanks to the strong hydrogen bonding and deeper matching between the rougher crystalline surface and solvent molecules. This work aims to provide a new perspective for revealing the riddle of \u03b1-resorcinol and investigates the defect control and morphology prediction in organic NLO crystals.<\/jats:p>","DOI":"10.1063\/5.0257446","type":"journal-article","created":{"date-parts":[[2025,7,8]],"date-time":"2025-07-08T06:10:17Z","timestamp":1751955017000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":1,"title":["The riddle of \u03b1-resorcinol revisited\u2014New perspectives on \u201cpocket-like\u201d structure"],"prefix":"10.1063","volume":"163","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4227-5101","authenticated-orcid":false,"given":"Zhenkai","family":"Cen","sequence":"first","affiliation":[{"name":"State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, and , Tianjin 300072,","place":["People\u2019s Republic of China People\u2019s Republic of China"]},{"name":"The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin , Tianjin 300072, and , Tianjin 300072,","place":["People\u2019s Republic of China People\u2019s Republic of China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6529-6939","authenticated-orcid":false,"given":"Lingyu","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, and , Tianjin 300072,","place":["People\u2019s Republic of China People\u2019s Republic of China"]},{"name":"The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin , Tianjin 300072, and , Tianjin 300072,","place":["People\u2019s Republic of China People\u2019s Republic of China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dongbo","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, and , Tianjin 300072,","place":["People\u2019s Republic of China People\u2019s Republic of China"]},{"name":"The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin , Tianjin 300072, and , Tianjin 300072,","place":["People\u2019s Republic of China People\u2019s Republic of China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8481-4244","authenticated-orcid":false,"given":"Dandan","family":"Han","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, and , Tianjin 300072,","place":["People\u2019s Republic of China People\u2019s Republic of China"]},{"name":"The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin , Tianjin 300072, and , Tianjin 300072,","place":["People\u2019s Republic of China People\u2019s Republic of China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3376-3296","authenticated-orcid":false,"given":"Junbo","family":"Gong","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, and , Tianjin 300072,","place":["People\u2019s Republic of China People\u2019s Republic of China"]},{"name":"The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin , Tianjin 300072, and , Tianjin 300072,","place":["People\u2019s Republic of China People\u2019s Republic of China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2025,7,8]]},"reference":[{"key":"2025070806101270600_c1","doi-asserted-by":"publisher","first-page":"197","DOI":"10.1039\/df9490500197","article-title":"Abnormal and modified crystal growth. 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