CSIR Technology Portal
CSIR Technology Portal

 New Invention Profile

Publication No: IN202411040868 [India] Application No: IN202411040868
Title: Green synthesis of green fluorescent silver nanodots capped with naringenin
Publication Date: 05-12-2025 File Date: 24-05-2024
Inventor(s): Nakul Chandra Maiti; Anupam Maity; Uttam Pal; Kaushik Bera; Shubham Kundu; Rajdip Misra; Krishnendu Khamaru; Mrinmay Bhunia
IPC Classification: G01N21/64, B82Y40/00, B22F9/24, B82Y30/00, C01G5/00
Abstract:
Present invention is a green fluorescence silver nanodots prepared with naringenin, a flavanone, by a near green synthesis without adding harsh reducing agent such as  sodium borohydride and others. Both the product and the method of preparation are new. In the method silver atoms clumped and produce quantum dot like  nanostructure of average size 3.5 nm. We call it as silver nanodot. A simple flavanone, aromatic organic molecule that contains three OH groups is used both as a mild  reducing and stabilizing agent for the preparation of the particles. The preparation method was a green synthesis method; unique used no common and strong reagent  like sodium borohydride, ascorbic acid surfactant, thiol containing reagent or protein solutions. Simply the alkaline solution of silver nitrate was treated with naringenin  and it produced the material. The methods used are very simple single pot synthesis and can be prepared at room temperature (25oC). The aqueous suspension of the  invented nanodots product is quite stable in room temperature. It produces strong green fluorescence with average fluorescence lifetime ~2.37 ns and produces a large  stocks shift.
CSIR-Indian Institute of Chemical Biology
CSIR-Indian Institute of Chemical Biology[CSIR-IICB]
:  director[at]iicb[dot]res[dot]in
:91-33-24730492
:https://iicb.res.in/