【研究發展處訊】

發表期刊論文名單如下：

Ø   理學院數學系 簡茂丁名譽教授

Ø   理學院數學系 簡茂丁名譽教授

Ø   理學院數學系 簡茂丁名譽教授

Ø   理學院化學系江建緯副教授

Ø   理學院數學系 簡茂丁名譽教授

論文名稱：Davis-Wielandt shells of 4 by 4 matrices

作    者：Chien, Mao-Ting、Nakazato, Hiroshi

期刊名稱：LINEAR ALGEBRA AND ITS APPLICATIONS（SCI）

卷期數：723

頁碼(文獻號碼) ：182-200

出版時間：2025.10.15

摘要：

In this paper, we study possible degrees of the boundary generating surfaces of the Davis-Wielandt shells of 4-by-4 upper triangular unitarily irreducible matrices. The degree can be any even number between 6 and 36 except 14,26 and 30.

Ø   理學院數學系 簡茂丁名譽教授

論文名稱：A Note on the Joint Numerical Range of a Triple of 4-by-4 Hermitian Matrices

作    者：Chien, Mao-Ting、Nakazato, Hiroshi

期刊名稱：MATHEMATICS（SCI）

卷期數：13(24)

頁碼(文獻號碼)：3977

出版時間：2025.12.13

摘要：

We present the degrees 14, 26 and 30 of the  boundary generating surfaces of the joint numerical ranges for triples of 4-by-4  Hermitian matrices. This result completes the missing degrees from a previous study.

Ø   理學院數學系 簡茂丁名譽教授

論文名稱：Comparing the operator norms of symmetric matrices sharing the same numerical range.

作    者：Chien, Mao-Ting、Nakazato, Hiroshi

期刊名稱：LINEAR ALGEBRA AND ITS APPLICATIONS（SCI）

卷期數：732

頁碼(文獻號碼) ：207-228

出版時間：2026.03.01

摘要：

The ternary form of an n times n matrix A is defined by  F_A(t,x,y)=det(tI_n +x Re(A) +y Im(A)), where Re(A)=(A +A*)/2 and Im(A)=(A-A*)/(2i).  If the algebraic curve F_A(t,x,y)=0 has no singular points, the Helton-vinnikov theorem asserts that there are 2^g non-unitarily similar symmetric matrices S satisfying F_A(t,x,y)=F_S(t,x,y), where g=(n-1)(n-2)/2.  We compare  the operator norms of the 2^g symmetric matrices that share the same numerical range of A.

Ø   理學院化學系 江建緯副教授

論文名稱：Photoelectrochemical Catalyzed Site-Selective Tryptophan β-Position Functionalization

作    者：Sun, Ci-Yang ; Chen, Yu-Yu ; Chen, Hung-Chi ; Li, Hung-Li ; Chiang, Chien-Wei

期刊名稱：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY（SCI）

卷期數：147(42)

頁碼(文獻號碼) ：38827-38837

出版時間：2025.10.22

摘要：

Site-specific bioconjugation methods offer exceptional uniformity in producing protein/peptide conjugates, thereby improving pharmacological properties. However, developing site-selective chemical modifications directly on natural amino acids, especially at the β-position, remains challenging. Here, we present a novel photoelectrochemical strategy for site-selective tryptophan β-position functionalization. Employing a 2,3-Dichloro-5,6-dicyano-p-benzoquinone (DDQ)/tert-Butyl nitrite (TBN) catalyst system under blue LED irradiation and electrochemical conditions, we achieved C(sp3)-H functionalization for activating the tryptophan β-position with nucleophiles. This resulted in a variety of conjugated peptides and proteins with outstanding selectivity. The in-situ generation of the C-centered Trp-skatolyl cation by this protocol allows its reaction with nucleophiles to produce diverse functionalized products. Offering mild, eco-friendly conditions and enhanced selectivity, this method emerges as a promising tool for peptide and protein modification in pharmaceutical applications.

研究事務組提醒：教師如有最新發表於AHCI、SSCI、SCI、TSSCI、THCI、「東吳大學外語學門獎勵名單」之期刊論文，歡迎隨時至GOOGLE表單填寫(網址為https://forms.gle/e6U4dL7pRNfgXnsHA)相關資訊，研究發展處將會公告於校園頭條及研究發展處首頁，以廣交流。

【文圖/研究事務組林洺瀠組員】