{"created":"2025-08-15T06:00:10.718866+00:00","id":2001664,"links":{},"metadata":{"_buckets":{"deposit":"1fc07ed4-92de-4d0b-8b77-5a278c3ad863"},"_deposit":{"created_by":9,"id":"2001664","owners":[9],"pid":{"revision_id":0,"type":"depid","value":"2001664"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:02001664","sets":["1"]},"author_link":[],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2025-05","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"2411142","bibliographic_titles":[{"bibliographic_title":"Small"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Quantum dots (QDs) composed of a group I?IV?VI semiconductor, Ag8GeS6, have been intensively investigated for constructing efficient energy conversion systems. However, their potential for photoluminescence (PL)-based applications has remained unexplored. Herein, the first successful preparation of Ag8GeS6 QDs exhibiting near-infrared (NIR) PL is reported. These Ag8GeS6 QDs with an average diameter of 4.2?4.6 nm has an almost constant energy gap at 1.48?1.45 eV, even when the Ge/(Ag+Ge) precursor ratio is varied from 0.05 to 0.90. A significant PL peak is observed at 920 nm, the intensity being enlarged with an increase in the Ge/(Ag+Ge) ratio. The use of Ag8GeS6 QDs prepared with Ge/(Ag+Ge) = 0.82 in the precursors result in a PL quantum yield (QY) of 11%, which is further enhanced to 40% through surface coating with a ZnS shell of 1.0 nm in thickness, with the PL peak wavelength being slightly blue-shifted to 900 nm. Following surface modification with 3-mercaptopropionic acid for homogeneous dispersion in aqueous solutions, the Ag8GeS6@ZnS QDs are utilized as an NIR PL probe for in vivo bioimaging. PL signals are clearly detected from depths of at least 15 mm beneath the back skin of a mouse, demonstrating their deep-tissue imaging capability.","subitem_description_type":"Abstract"}]},"item_8_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Wiley"}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1002/smll.202411142","subitem_relation_type_select":"DOI"}}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1613-6829","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Nurmanita Rismaningsih"}]},{"creatorNames":[{"creatorName":"Junya Kubo"}]},{"creatorNames":[{"creatorName":"Masayuki Soto"}]},{"creatorNames":[{"creatorName":"Kazutaka Akiyoshi"}]},{"creatorNames":[{"creatorName":"Tatsuya Kameyama"}]},{"creatorNames":[{"creatorName":"Takahisa Yamamoto"}]},{"creatorNames":[{"creatorName":"Yukawa Hiroshi"}]},{"creatorNames":[{"creatorName":"Baba Yoshinobu"}]},{"creatorNames":[{"creatorName":"Tsukasa Torimoto"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Enhancing Near-Infrared Photoluminescence of Ag8GeS6 Quantum Dots Through Compositional Fine-Tuning and ZnS Coating for In Vivo Bioimaging","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Enhancing Near-Infrared Photoluminescence of Ag8GeS6 Quantum Dots Through Compositional Fine-Tuning and ZnS Coating for In Vivo Bioimaging","subitem_title_language":"en"}]},"item_type_id":"8","owner":"9","path":["1"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2025-06-20"},"publish_date":"2025-06-20","publish_status":"0","recid":"2001664","relation_version_is_last":true,"title":["Enhancing Near-Infrared Photoluminescence of Ag8GeS6 Quantum Dots Through Compositional Fine-Tuning and ZnS Coating for In Vivo Bioimaging"],"weko_creator_id":"9","weko_shared_id":-1},"updated":"2025-10-16T08:44:18.954801+00:00"}