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SCIESCOPUS

Deuterated dicondensed indolinobenzospiropyran formed from the reaction of Fischer base-d(2) and salicylaldehyde: Mechanism involving a carbinol intermediate

Keum, Sam-Rok; Ku, Byung-Soo; Lee, Min-Hyung; Chi, Gyeong-Yup; Lim, Soon-Sung

ArticleIssue Date2009CitationDYES AND PIGMENTS, v.80, no.1, pp 26 - 29PublisherELSEVIER SCI LTD

SCISCIESCOPUS

Diastereomeric isomerization of Fischer's base analogs of LTAM molecules in organic solvents: mechanistic investigation

Keum, Sam-Rok; Ma, So-Young

ArticleIssue Date2014CitationTETRAHEDRON, v.70, no.6, pp 1187 - 1192PublisherPERGAMON-ELSEVIER SCIENCE LTD

SCISCIESCOPUS

Diastereomeric isomerization of hetaryl leuco-TAM dyes, (2Z, 2 ' E)-2,2 '-(2-phenyl propane-1,3-diylidene)bis(1,3,3-trimethylindoline) derivatives in various organic solvents

Keum, Sam-Rok; Roh, Se-Jung; Ma, So-Young; Kim, Do-Kyung; Cho, Art E.

ArticleIssue Date2010CitationTETRAHEDRON, v.66, no.40, pp 8101 - 8107PublisherPERGAMON-ELSEVIER SCIENCE LTD

SCISCIESCOPUSKCI

Facile Evaluation of Thermodynamic Parameters for Reverse Thermochromism of Indolinobenzospiropyran-6-carboxylates in Aqueous Binary Solvents

Keum, Sam-Rok; Ma, So-Young; Lim, Hyun-Woo; Han, Tae-Hwi; Choi, Kyu-Hyun

ArticleIssue Date2012CitationBULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.33, no.8, pp 2683 - 2688PublisherWILEY-V C H VERLAG GMBH

SCIESCOPUS

H-1 and C-13 NMR assignments for new heterocyclic TAM leuco dyes, (2Z,2 ' E)-2,2 '-(2-phenyl propane-1,3-diylidene) bis(1,3,3-trimethylindoline) derivatives. Part II

Keum, Sam-Rok; Roh, Se-Jung; Lee, Min-Hyung; Sauriol, Francoise; Buncel, Erwin

ArticleIssue Date2008CitationMAGNETIC RESONANCE IN CHEMISTRY, v.46, no.9, pp 872 - 877PublisherWILEY

SCISCIESCOPUS

Novel dimeric leuco-TAM dyes, 1,4-bis{(1E,3Z)-1,3-bis (1,3,3-trimethylindolin-2-ylidene)propan-2-yl}benzene derivatives: Structure and spectroscopic characterization

Keum, Sam-Rok; Ma, So-Young; Kim, Do-Kyung; Lim, Hyun-Woo; Roh, Se-Jung

ArticleIssue Date2012CitationJOURNAL OF MOLECULAR STRUCTURE, v.1014, pp 126 - 133PublisherELSEVIER

SCISCIE

Novel stilbene-based Fischer base analog of leuco-TAM - (2E,2 ' Z)-{2-(4-(E)-styrylphenyl) propane-1,3-diylidene}bis(1,3,3-trimethylin doline) - derivatives: synthesis and structural consideration by 1D NMR and 2D NMR spectroscopy

Keum, Sam-Rok; Lim, Hyun-Woo

ArticleIssue Date2016CitationMAGNETIC RESONANCE IN CHEMISTRY, v.54, no.2, pp 143 - 150PublisherWILEY-BLACKWELL

SCISCIESCOPUS

Novel unsymmetrical leuco-TAM, (2E, 2 ' E)-2,2 '-{(E)-4-phenylpent-2-ene-1,5-diylidene}bis(1,3,3-trimethylindoline) derivatives: Synthesis and structure elucidation

Keum, Sam-Rok; Lee, Min-Hyung; Ma, So-Young; Kim, Do-Kyung; Roh, Se-Jung

ArticleIssue Date2011CitationDYES AND PIGMENTS, v.90, no.3, pp 233 - 238PublisherELSEVIER SCI LTD

SCISCIESCOPUS

Synthesis and X-ray crystal structure of isomeric pyridine-based leuco-TAM dyes, 2,2-(2-(pyridinyl)propane-1,3-diylidene)bis(5-chloro-1,3,3-trimethyl indoline) derivatives and unusual stability of 4-pyridinyl compound

Ma, So-Young; Keum, Sam-Rok

ArticleIssue Date2013CitationSPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, v.113, pp 261 - 267PublisherPERGAMON-ELSEVIER SCIENCE LTD

SCISCIESCOPUS

The synthesis and spectroscopic properties of novel, photochromic indolinobenzospiropyran-based homopolymers prepared via ring-opening metathesis polymerization

Keum, Sam-Rok; Ahn, Su-Mi; Roh, Se-Jung; Ma, So-Young

ArticleIssue Date2010CitationDYES AND PIGMENTS, v.86, no.1, pp 74 - 80PublisherELSEVIER SCI LTD

SCISCIESCOPUS

Unsymmetric leuco-TAM dyes, (2E, 2 ' E)-2,2 '-{(E)-4-phenylpent-2-ene-1,5-diylidene}bis(1,3,3-trimethylindoline) derivatives. Part II: X-ray crystal structure

Keum, Sam-Rok; Ma, So-Young; Kim, Do-Kyung; Lim, Hyun-Woo; Roh, Se-Jung

ArticleIssue Date2012CitationDYES AND PIGMENTS, v.94, no.3, pp 490 - 495PublisherELSEVIER SCI LTD

SCISCIESCOPUSKCI

Unsymmetrically Substituted Leuco-Triarylmethane Molecules Formed from the Reaction of a Fischer's Base and alpha,beta-Unsaturated Iminium Salts via a Michael-Type Reaction

Keum, Sam-Rok; Kim, Hyun-Soo; Kim, Do-Kyung

ArticleIssue Date2013CitationBULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.34, no.5, pp 1563 - 1566PublisherWILEY-V C H VERLAG GMBH

SCISCIESCOPUSKCI

Unusual Stability of Diastereomers of the Isomeric Pyridine-based Leuco-TAM Dyes 2,2 '-(2-(Pyridin-4 or 3-yl)propane-1,3-diylidene)bis(5-chloro-1,3,3-trimethylindoline)

Ma, So-Young; Kim, Do-Kyung; Lim, Hyun-Woo; Roh, Se-Jung; Keum, Sam-Rok

ArticleIssue Date2012CitationBULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.33, no.2, pp 681 - 684PublisherKOREAN CHEMICAL SOC

SCIESCOPUSKCI

X-ray Crystal Structure of Hetaryl Leuco-TAM Dyes, (2Z,2 ' E)-2,2 '-(2-Phenyl Propane-1,3-diylidene)Bis(1,3,3-trimethyl indoline) Derivatives

Keum, Sam-Rok; Roh, Se-Jung; Kim, Young-Nan; Im, Do-Hyuck; Ma, So-Young

ArticleIssue Date2009CitationBULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.30, no.11, pp 2608 - 2612PublisherWILEY-V C H VERLAG GMBH

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Browsing by Keum, Sam-RokAuthor

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